2018 Mercedes-Benz Gla 250
Safety record from NHTSA: recalls, owner complaints, investigations and service bulletins.
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Vehicles › Mercedes-Benz › Gla 250 › 2018
These records cover every 2018 Mercedes-Benz Gla 250. To see whether one car still needs a recall repair, decode its VIN or check it with NHTSA.
Recalls
12 recalls name the 2018 Mercedes-Benz Gla 250. Newest first.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2014-2020 C-Class, CLA, GLA, S-Class, GLC, and GLE vehicles. Please refer to MBUSA's recall report for specific vehicle details. The front roof panel located between the windshield and the panoramic sunroof may not have been bonded correctly to the vehicle during a prior repair, allowing the front panel…
Risk and remedy
Risk
A detached roof panel can become a road hazard, increasing the risk of a crash.
Remedy
Dealers will replace the front panel, free of charge. Owner notification letters were mailed on August 2, 2024. Owner notification letters will be mailed in phases, on, March 22,2024, and August 2, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. This recall is an expansion of NHTSA recall number 21V-197.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2022 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, AMG GT-Class, C-Class, E-Class, S-Class, SL-Class, GLC-Class, CLS-Class, GLB-Class, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. An error in the communication module's SIM card…
Risk and remedy
Risk
A disabled eCall system would prevent a vehicle occupant from contacting the emergency services call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.
Remedy
The communication module software will be updated through an Over-the-Air (OTA) update or by a dealer, free of charge. Owner notification letters were mailed July 8, 2022. Owner notification letters will be mailed in phases, on July 8, 2022, May 17, 2024, July 29, 2024, and September 27, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's numbers are for this recall is 2022060005 and 2023110006.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017 B250e, CLA250, 2017-2018 AMG CLA45, GLA250, and AMG GLA45 vehicles. The steering shaft bore hole for the universal joint bearing may allow excessive movement that, over time, could result in the separation of the bearing and universal joint.
Risk and remedy
Risk
A separated universal joint bearing can cause a loss of steering control and increase the risk of a crash.
Remedy
MBUSA will notify owners, and dealers will inspect, and as necessary, replace the steering shaft, free of charge. Owner notification letters were mailed July 23, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2021060001.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2020 C300 Coupe, C43 Coupe AMG, C43 AMG, 2015-2020 C300, GLA250, 2016-2018 C350e, CLA45 Coupe AMG, 2015 C400, S65 AMG, 2015-2019 C63 AMG, 2016 C450, 2015-2016 GLA45 AMG, S600, 2016-2020 GLC300, 2017-2019 GLC43 AMG, GLE43 Coupe AMG, 2014-2019 CLA250 Coupe, 2014-2015 CLA45 AMG, 2018 GLC63 AMG, 2014-2017…
Risk and remedy
Risk
The adhesive bonding of the front panel might deteriorate, possibly causing the front panel to detach from the vehicle and become a road hazard, increasing the risk of a crash.
Remedy
Mercedes-Benz dealer will remove the bonded panel and will install a new front panel by following the detailed repair instructions and using the approved primer, cleaner and adhesive, free of charge. Owner notification letters were mailed on September 3, 2021 and October 26, 2021. Owners may contact MBUSA customer service at 1-800-367-6372.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2019 C300, E300, 2018-2020 CLA250, 2020 CLS450, AMG E53, AMG GT53, GLE450, 2018 AMG E63, AMG GTA, 2017-2020 GLA250, GLC300, 2019 GLC350, AMG GLC43, 2017-2018 GLE350, 2019 AMG GLC 43, GLC350, GLE400, 2017 GLS450, S550, C300 Cabrio, and 2018-2019 S560 vehicles. On June 18, 2021, an additional 9…
Risk and remedy
Risk
A disabled eCall system would prevent a vehicle occupant from contacting emergency services through the call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.
Remedy
MBUSA will notify owners, and dealers will inspect the communication module and activate it, if necessary, free of charge. The recall began March 31, 2021. Letters for the owners of the 9 additional vehicles were mailed July 9, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2021030005.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 - 2021 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, GT-Class, C-Class, E-Class, S-Class, CLS-Class, SL-Class, B-Class, GLB-Class, GLC-Class, and G-Class vehicles. Please refer to the Part 573 report for specific vehicle model details. The software design of the communication…
Risk and remedy
Risk
Failure of the eCall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.
Remedy
MBUSA will notify owners, and the communication module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. The recall began March 12, 2021. Owners may contact MBUSA customer service at 1-877-762-8267. MBUSA's number for this recall is 2021020025.
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2018-2019 GLA250 and GLA250 4MATIC vehicles. The left anchor plate of the rear middle seatbelt may be loose.
Risk and remedy
Risk
The seatbelt for a passenger seated in the rear middle seating position might not be properly secured, which could increase the risk of an injury in the event of a crash.
Remedy
MBUSA will notify owners, and dealers will inspect the left anchor plate of the rear middle seatbelt, correcting its installation as necessary, free of charge. The recall began September 13, 2019. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2019080010.
Mercedes-Benz USA, LLC (Mercedes) is recalling certain 2018-2019 GLA-250 and GLA250 4MATIC vehicles. An incorrect rear seat back covering carpet could have been installed on the split-rear seat back. As a result, the child seat anchorage point (top tether) on the center positon of the rear seat may be covered and inaccessible for use. As such, these…
Risk and remedy
Risk
If the upper anchorage point is covered, the child seat will not be able to be secured as intended in the center position of the rear seat, increasing the risk of injury in the event of a crash.
Remedy
Mercedes will notify owners, and dealers will check the rear seat back covering carpet on the affected vehicles and replace it if necessary, free of charge. The recall began April 6, 2019. Owners may contact Mercedes-Benz's customer service at 1-800-367-6372. Mercedes' number for this recall is 2019030003.
Mercedes-Benz USA, LLC (Mercedes) is recalling certain 2018-2019 GLA250 and GLA250 4MATIC vehicles. The sunroof bonding may allow water to leak into the vehicle.
Risk and remedy
Risk
Water leaking into the vehicle from around the sunroof may affect the electrical contacts of the window air bag, potentially causing the window air bag to not deploy as intended, increasing the risk of injury in the event of a crash.
Remedy
Mercedes has notified owners, and dealers will inspect the bonding of the panorama sliding sunroof and the electrical contacts of the window air bag on the affected vehicles, replacing the components as necessary, free of charge. The recall began April 12, 2019. Owners may contact Mercedes customer service at 1-800-367-6372. MBUSA's number for this recall is 2019030006.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2018 Mercedes-Benz GLA250 and GLA250 4Matic vehicles. The child seat top tether anchorage point on the center position of the rear seat may not have been installed. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 225, "Child Restraint…
Risk and remedy
Risk
If the top tether anchorage point is missing, a child seat will not be able to be properly installed in the center rear seat position, increasing the risk of injury.
Remedy
MBUSA will notify owners, and dealers will replace the rear seat backrest, free of charge. The recall began August 15, 2018. Owners may contact MBUSA customer service at 1-800-367-6372.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2018 GLA250 4Matic vehicles. The low beam headlight settings on these vehicles may deviate from the required specification, reducing the range of light. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices…
Risk and remedy
Risk
Reduced headlight range can affect visibility and increase the risk of a crash.
Remedy
MBUSA owns the affected vehicles. Dealers will inspect the headlight adjustment, correcting it as necessary, free of charge. The recall began on October 27, 2017. Owners may contact MBUSA customer service at 1-877-496-3691. MBUSA's number for this recall is 2017100009.
Mercedes-Benz USA, LLC. (MBUSA) is recalling these vehicles: 2014-2018 CLA250, CLA250 4Matic, CLA45 AMG 4Matic, 2015-2018 GLA250, GLA250 4Matic, GLA45 AMG 4Matic, C300 4Matic, C63S AMG, 2012-2014 C250, C350, C300 4Matic, E550 4Matic, 2013-2014 C63 AMG, 2012-2015 C250 Coupe, C350 Coupe, C63 AMG Coupe, 2013-2015 C350 4Matic Coupe, GLK250 4Matic BlueTec…
Risk and remedy
Risk
If the driver air bag inadvertently deploys, it can increase the risk of injury and a crash.
Remedy
MBUSA will notify owners, and dealers will add sufficient grounding to the steering components, free of charge. The recall began in December 6, 2017. Owners may contact MBUSA customer service at 1-877-496-3691.
Owner complaints
50 complaints2 involved a crash1 involved a fire1 injuries
What owners report most
Latest complaints
- Fuel/propulsion system
When starting vehicle a strong fuel smell is noticed in the vehicle cabin.
- Unknown or other
My vehicle is a 2018 Mercedes-Benz GLA 250 4Matic with 79,779 miles. It is actively experiencing the severe, hazardous drivability issues detailed in your filings—specifically, unexpectedly rejecting gears and shifting into Neutral or Park when coming to a complete stop. This condition leaves the…
My vehicle is a 2018 Mercedes-Benz GLA 250 4Matic with 79,779 miles. It is actively experiencing the severe, hazardous drivability issues detailed in your filings—specifically, unexpectedly rejecting gears and shifting into Neutral or Park when coming to a complete stop. This condition leaves the vehicle completely stranded at intersections, creating an immediate and unreasonable risk of a rear-end collision. Objective Diagnostic Data (Documented September 16, 2026): A professional diagnostic scan of my powertrain system failed due to critical communication dropouts. The scanner pulled active Diagnostic Trouble Code (DTC) U1457, explicitly defined as: "The Signal 'Fuel Level' From The Rear Signal Acquisition And Actuation Module Was Not Received By The Instrument Cluster." Chronological Symptoms & Environmental Ingress Link: Erratic Gauge Indicators: Immediately preceding a complete system failure, the vehicle's fuel gauge fluctuates erratically up and down while driving. Instrument Cluster Blackout: Following the gauge erraticism, the entire instrument cluster drops off the digital high-speed network line (the CAN Bus) and displays a completely blank, unresponsive black screen. The CAN bus chain drops communication with individual modules—including the Transmission Control Module—forcing the vehicle to dangerously drop into Neutral or Park at low speeds.
- Air bags · Electrical system · Steering
After the vehicle's main battery fully discharged and the vehicle was jump-started, multiple SRS / driver airbag warnings appeared immediately, the horn and steering wheel controls stopped working, and a clicking noise developed in the steering column when turning the wheel. None of these symptoms…
After the vehicle's main battery fully discharged and the vehicle was jump-started, multiple SRS / driver airbag warnings appeared immediately, the horn and steering wheel controls stopped working, and a clicking noise developed in the steering column when turning the wheel. None of these symptoms existed before the battery discharge / jump-start event. Mercedes-Benz of Sarasota (Repair Order / Invoice 675113) performed XENTRY diagnostics and documented fault codes B000113 and B000213 (driver airbag squib stage 1 and stage 2 malfunction - open circuit), U100800 (LIN bus 1 malfunction in the steering column module), and B1F4500 (starter battery excessive resistance current; 12V battery failed test). The technician documented the root cause as "defective steering angle sensor and internal wiring of steering column module, thus no completed electrical circuit to driver airbag and steering wheel," and noted that the vehicle is unsafe to drive because the driver airbag will not deploy in a crash. Mileage approximately 73,447. No crash, fire, or injury occurred - the defect was discovered as a non-functioning driver airbag. I am reporting this because the failure mode appears related to the steering column module / clock spring / driver airbag circuit addressed in NHTSA recall 17V627 (MB campaign 2017110011), for which this VIN is not included; this vehicle was produced after the recall's stated production cutoff. Three dealership managers stated in writing that the failure was mechanical and unrelated to the electrical event, which is inconsistent with their own technician's documented electrical root cause. The dealership's Service Director stated he could not determine why the failure occurred. Mercedes-Benz USA (case 24257427) has not performed any engineering or product safety review of this failure. I request that NHTSA evaluate whether steering column module / driver airbag circuit failures are occurring in vehicles built after the 17V627 production cutoff.
- Structure › Body · Unknown or other
Sunroof glass exploded without warning while driving at highway speed. Glass shards poured throughout the vehicle including on the driver, potentially putting the vehicle and other vehicles in danger.
- Engine · Fuel/propulsion system
I am filing a complaint regarding my 2018 Mercedes-Benz GLA 250. My vehicle recently triggered a check engine light and was diagnosed by an independent mechanic with code P052E, related to the positive crankcase ventilation regulator valve / crankcase ventilation system. My mechanic advised that…
I am filing a complaint regarding my 2018 Mercedes-Benz GLA 250. My vehicle recently triggered a check engine light and was diagnosed by an independent mechanic with code P052E, related to the positive crankcase ventilation regulator valve / crankcase ventilation system. My mechanic advised that this issue appears to be similar to a known Mercedes-Benz issue affecting other model years and/or related Mercedes models. Mercedes-Benz has issued an emissions extended warranty/service coverage for a similar crankcase ventilation / intake line assembly issue on other vehicles, including fault code P052E71. However, my vehicle does not appear to be included despite having the same or very similar failure code and system issue. I am concerned that this may be a broader defect affecting additional Mercedes vehicles beyond the models currently covered. The issue involves the crankcase ventilation/PCV system and may require repair of related intake line, valve cover, oil separator, or ventilation valve components. I believe this should be reviewed because owners of vehicles with the same failure pattern may be responsible for costly repairs even though the issue appears similar to one Mercedes has already acknowledged on other models. I am requesting that NHTSA review whether 2018 Mercedes-Benz GLA 250 vehicles should be included in any related recall, defect investigation, emissions warranty extension, or service campaign related to code P052E / P052E71 and the crankcase ventilation regulator valve system.
- Electrical system · Forward collision avoidance › Warnings · Lane departure › Blind spot detection
The vehicle experienced a sudden, total communication network crash on [XXX] the vehicle simultaneously triggered cascading critical safety system faults including “ inoperable” messages for the SOS system, Supplemental Restraint System ( SRS) and antilock brake system(ABS) along with check engine…
The vehicle experienced a sudden, total communication network crash on [XXX] the vehicle simultaneously triggered cascading critical safety system faults including “ inoperable” messages for the SOS system, Supplemental Restraint System ( SRS) and antilock brake system(ABS) along with check engine light on dashboard. The car locked itself in park and completely refuses to engage any drive gears. I took it to the dealer in Henderson, NV and they reported to me on Dec 24, 2025 that it will be a $1200 diagnostic and the repairs can be thousands of dollars. Since then I have taken it to 5 European and independent shops and have spent thousands of dollars for guess work. This happens sporadically I have been broken down where tow trucks have to retrieve my car and take to a shop where they have no clue of the issue. I am scared to drive it if it stalls on the streets and have a major accident. No problem has been resolved INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
- Engine
Why is the Crankcase Ventilation System P052E Code (PCV) covered in most Mercedes models, but not the GLA? This is an expensive repair that seems to cover other cars but penalizes GLA owners just to have a safe car to drive like the other models. I strongly believe GLA should be on the recall list…
Why is the Crankcase Ventilation System P052E Code (PCV) covered in most Mercedes models, but not the GLA? This is an expensive repair that seems to cover other cars but penalizes GLA owners just to have a safe car to drive like the other models. I strongly believe GLA should be on the recall list for the matter, as it is dangerous to drive on the road, especially for those who cannot afford to fix it for upwards of $1,500 to $2000.
- Electrical system · Exterior lighting · Unknown or other
My vehicle has been taken to the Mercedes dealership multiple times from 2/24/25 -12/14/25 (10 Mths) for the following issues and still no resolution to the problem. Each time they say they've fixed the issues we get the car home and end up bringing it back a couple days later for the exact same…
My vehicle has been taken to the Mercedes dealership multiple times from 2/24/25 -12/14/25 (10 Mths) for the following issues and still no resolution to the problem. Each time they say they've fixed the issues we get the car home and end up bringing it back a couple days later for the exact same issue. The issues being the Instrument Cluster/Panel failure (check engine light, multiple warning lights on display while driving, dash display is blacking out and unresponsive). The speedometer, fuel amount and mileage is also blacked out and unresponsive. The headlights, and tail lights also go off and are unresponsive while driving. We've also experienced the vehicle not going in reverse or drive and had to return it multiple times for this as well. These incidents are very serious safety hazards to the driver of the vehicle, other drivers and pedestrians. On several occasions we've addressed these problems with the dealership and still no resolve. However, we are paying very expensive labor fees only to return it with the same problems repeatedly and no explanation as to why the problem keeps recurring. We have receipts, photos and videos of this problem because the dealership kept stating they weren't seeing the issues we were seeing. However, after we presented the evidence and confirmation we have, they stated that they would conduct a diagnostic test and take a look, but the issues still have not been resolved after several times picking it up after they stated that they had changed the instrumental cluster. The last time after we returned it they discovered they had put the wrong part in the vehicle, however the same issues occurred with that part as well which is the reason we returned it to be looked at again. They changed it and still the same issue has repeated again. This is concerning and alarming that we were trusting them to work on the vehicle and driving the vehicle home thinking it is fixed and then discovering that they had put a wrong part in the car.
- Structure › Body · Unknown or other
Dear NHTSA Office of Defects Investigation, I am submitting a safety complaint regarding my 2018 Mercedes-Benz GLA 250 (VIN: [XXX] ). On October 28, 2025, while driving southbound on Interstate 5 near the Zamora Exit in California at approximately 8:15 a.m., the fully closed moonroof of my vehicle…
Dear NHTSA Office of Defects Investigation, I am submitting a safety complaint regarding my 2018 Mercedes-Benz GLA 250 (VIN: [XXX] ). On October 28, 2025, while driving southbound on Interstate 5 near the Zamora Exit in California at approximately 8:15 a.m., the fully closed moonroof of my vehicle spontaneously shattered. There was no impact, debris, or external cause, and the vehicle was operated under normal conditions. The incident was extremely frightening and created a serious safety hazard while driving at freeway speed. I began shaking uncontrollably and immediately called my manager to report that I could not come into work due to shock. I also contacted my mother to help calm me down. Vehicle Details: VIN: [XXX] Mileage: 90,XXX miles Purchase: Approximately 5 years ago at Fairfield Mercedes-Benz dealership Condition: No prior repairs to the moonroof, no aftermarket modifications I have documented the incident with photos and video. I have reported this to Mercedes-Benz Customer Care and my insurance provider (USAA). Additionally, I have reached out to Washington Law Offices, who are currently handling a class action lawsuit regarding this issue. I am submitting this complaint to formally notify NHTSA of the dangerous defect and to request that the agency investigate this potential safety issue affecting Mercedes-Benz vehicles with panoramic or sunroof systems. Thank you for your attention to this matter. Please confirm receipt of this complaint and advise on any additional steps I should take. Sincerely, [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
- Air bags · Electrical system · Visibility › Sun/moon roof assembly
The contact owns a 2018 Mercedes-Benz GLA 250. The contact stated that while driving at various speeds, various warning lights, including the check engine, TPMS (Tire Pressure Monitoring System), oil, and other warning lights, were intermittently illuminated. The vehicle was taken to a dealer for a…
The contact owns a 2018 Mercedes-Benz GLA 250. The contact stated that while driving at various speeds, various warning lights, including the check engine, TPMS (Tire Pressure Monitoring System), oil, and other warning lights, were intermittently illuminated. The vehicle was taken to a dealer for a diagnostic test; however, no faults were found with the vehicle. The contact stated that the sunroof failed to completely close; because of the failure, water was leaking inside the vehicle during inclement weather. In addition, the air bag warning light had also become illuminated. The vehicle was not yet repaired. The manufacturer was notified of the failure, and the contact was promised a call back. The failure mileage was 45,695.
- Engine · Unknown or other
This vehicle has a transmission control module defect. While driving, the car cuts off unexpectedly and prevents shifting gears, creating a serious safety risk that could easily cause an accident. A certified Mercedes-Benz dealer diagnosed the problem and confirmed it is an internal defect—one that…
This vehicle has a transmission control module defect. While driving, the car cuts off unexpectedly and prevents shifting gears, creating a serious safety risk that could easily cause an accident. A certified Mercedes-Benz dealer diagnosed the problem and confirmed it is an internal defect—one that cannot be prevented by regular maintenance or proper care of the vehicle. Because this is an internal issue, Mercedes-Benz should take immediate responsibility to repair it, rather than delaying or shifting accountability.
- Electrical system
My vehicle electrical panel is messed up can not read the driver panel the sunroof electrical also is not working the driver seat chair electrical stopped working and ever since the sunroof n chair started giving me issues my front panels started to go haywire went to dealer ship cost n repair are…
My vehicle electrical panel is messed up can not read the driver panel the sunroof electrical also is not working the driver seat chair electrical stopped working and ever since the sunroof n chair started giving me issues my front panels started to go haywire went to dealer ship cost n repair are over 4K for the panel sunroof 4-8k chair another 1-3k I regularly maintain my vehicle and should not be having these issues with the gentle care I give my car I can no longer drive it as it has major issues electrical and no one will buy it from me.
- Power train
Rear differential is faulty. This is the second time it has failed. The first time was in October 2021 the mileage was 44,812 and it was repaired. More recently it was making a noise and I took it back to Mercedes Benz dealership for repair. It was not properly diagnosed over an 8 week period and…
Rear differential is faulty. This is the second time it has failed. The first time was in October 2021 the mileage was 44,812 and it was repaired. More recently it was making a noise and I took it back to Mercedes Benz dealership for repair. It was not properly diagnosed over an 8 week period and now it has completely failed. After the fact, I discovered many more Mercedes Benz owners have had the same problem with this happening but there is no recall. I am reporting it so it can be noted that this is an on going issue with these vehicles and hopefully a recall of faulty equipment will be issued
- Visibility › Sun/moon roof assembly
to a sunroof bonding issue that could cause water leakage
- Fuel/propulsion system · Unknown or other
Crankcase Vent Valve needs replaced. Causes jumps in acceleration and pressure build up. Was a recall in other models. Took to a dealer today to confirm the check engine light and this was the cause.
- Engine and engine cooling › Exhaust system › Emission control › Crankcase (pcv)
The contact owns a 2018 Mercedes-Benz GLA250. The contact stated that while the vehicle was parked, the check engine warning light illuminated. The contact used an OBD2 scanner and retrieved diagnostic trouble codes that indicated that the PCV valve had failed. The dealer was notified of the…
The contact owns a 2018 Mercedes-Benz GLA250. The contact stated that while the vehicle was parked, the check engine warning light illuminated. The contact used an OBD2 scanner and retrieved diagnostic trouble codes that indicated that the PCV valve had failed. The dealer was notified of the failure and advised the contact that the vehicle needed to be diagnosed to determine if the repair would be covered. The vehicle was not repaired. The contact related the failure to the Manufacturer Communication Number: 10241531. The manufacturer was not notified of the failure. The failure mileage was approximately 110,000.
- Fuel/propulsion system
There was a gas smell that would seep into the driving cabin from the engine. It was intermittent however when it did occur, the smell was strong enough to cause light headedness to the occupants of the vehicle. I took the car to my personal mechanic who told me that this was a common issue with…
There was a gas smell that would seep into the driving cabin from the engine. It was intermittent however when it did occur, the smell was strong enough to cause light headedness to the occupants of the vehicle. I took the car to my personal mechanic who told me that this was a common issue with these cars; however, Mercedes had not issued a recall. I my mechanic fix the issue since they had already diagnosed the problem. I did some research and discovered that there is class action law suit regarding this same issue. (Please see link below:). I am respectfully requesting NHTSA conduct an investigation into this matter as this is definitely a safety hazard as the gas smell could impair the driver to the point of not being able to drive the vehicle safely. [XXX] . INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
- Engine
The contact owns a 2018 Mercedes-Benz GLA250. The contact stated that while driving at an undisclosed speed, the vehicle stalled. There were no warning lights illuminated. The contact stated that there was a fuel odor coming from the vehicle. The vehicle was towed to the dealer where it was…
The contact owns a 2018 Mercedes-Benz GLA250. The contact stated that while driving at an undisclosed speed, the vehicle stalled. There were no warning lights illuminated. The contact stated that there was a fuel odor coming from the vehicle. The vehicle was towed to the dealer where it was diagnosed that the fuel injectors had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure by the dealer. The approximate failure mileage was 196,077.
- Back over prevention › Sensing system › Camera
Hello, Our car’s rear camera stopped working after about 31,000 miles. It has created a lot of safety problems. Apparently, the rear cameras stop functioning early on.
- Fuel system, gasoline
The contact owns a 2018 Mercedes Benz GLA 250. The contact stated while the vehicle was parked, it was discovered that there was a fuel leakage. The hazard warning light was illuminated. The contact did research and discovered NHTSA Campaign Number: 21V961000 (Fuel System, Gasoline) however, the…
The contact owns a 2018 Mercedes Benz GLA 250. The contact stated while the vehicle was parked, it was discovered that there was a fuel leakage. The hazard warning light was illuminated. The contact did research and discovered NHTSA Campaign Number: 21V961000 (Fuel System, Gasoline) however, the VIN was not included. The vehicle was taken back to the residence. A dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 20,000.
- Engine and engine cooling
The contact owns a 2018 Mercedes-Benz GLA250. The contact stated while driving at various speeds and attempting to accelerate, the vehicle hesitated and jerked abnormally before accelerating. The contact stated that the failure also occurred while accelerating from the vehicle idling. The check…
The contact owns a 2018 Mercedes-Benz GLA250. The contact stated while driving at various speeds and attempting to accelerate, the vehicle hesitated and jerked abnormally before accelerating. The contact stated that the failure also occurred while accelerating from the vehicle idling. The check engine warning light was illuminated. The vehicle was taken to the dealer who diagnosed that the crankcase vent valve had malfunctioned and caused the failure. The contact was informed that the crankcase vent valve needed to be replaced. The vehicle had not been repaired. The dealer confirmed that the VIN was not covered under warranty. The manufacturer was not made aware of the failure. The failure mileage was approximately 30,000.
- Engine
Positive Crankcase valve malfunction
- Power train
The contact owns a 2018 Mercedes-Benz GLA250. The contact stated while his mother was driving 45 MPH, the message that reverse was not available was displayed. The contact stated that the vehicle shifted into neutral independently and the ABS inadvertently engaged. The contact diagnosed the vehicle…
The contact owns a 2018 Mercedes-Benz GLA250. The contact stated while his mother was driving 45 MPH, the message that reverse was not available was displayed. The contact stated that the vehicle shifted into neutral independently and the ABS inadvertently engaged. The contact diagnosed the vehicle and determined that the wheel center and transmission needed to be replaced. The wheel center was replaced; however, the transmission was not repaired or replaced. The manufacturer was notified of the failure but offered no assistance. The contact related the failure to NHTSA Campaign Number: 21V033000 (POWER TRAIN); however, the VIN was not included in the recall. The failure mileage was 59,762.
- Power train
I was driving on the freeway and the transmission shifted into neutral and the car lost power. The Red malfunction lights came on and said transmission malfunction, DO NOT SHIFT, STOP driving immediately, contact dealer. There is a class action lawsuit and a RECALL on the 2019 GLA 250…
I was driving on the freeway and the transmission shifted into neutral and the car lost power. The Red malfunction lights came on and said transmission malfunction, DO NOT SHIFT, STOP driving immediately, contact dealer. There is a class action lawsuit and a RECALL on the 2019 GLA 250 transmission of this car (mine is 2018 GLA 250) Mercedes customer service is telling me that my VIN is not included and I would like it to be included The NHTSA recall number for the 2019 cars is #21V033000 I was told by Mercedes that for this to be considered as part of the recall i would need an NHTSA inspector to see the car BEFORE i have any repair work done
- Power train
The contact owns a 2018 Mercedes-Benz GLA250. The contact stated while driving 25 MPH, the transmission unintendedly shifted to neutral. No warning light was illuminated; however, the message "Transmission Error" was displayed on the instrument panel. The vehicle was taken back to the residence. A…
The contact owns a 2018 Mercedes-Benz GLA250. The contact stated while driving 25 MPH, the transmission unintendedly shifted to neutral. No warning light was illuminated; however, the message "Transmission Error" was displayed on the instrument panel. The vehicle was taken back to the residence. A dealer was not contacted, and the vehicle was not diagnosed. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 40,000.
Defect investigations
NHTSA’s Office of Defects Investigation opened these reviews into vehicles including this one.
- Desiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant…
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf.Consequently, all frontal inflators using propellant 2004 that do not contain a "desiccant" (a substance that traps and holds moisture) in US vehicles are under recall. These "non-desiccated" inflators either have been or are required to be replaced.In some cases, the remedy part for these recalled inflators was, or will be, an inflator using either propellant 2004 or 2004L that does contain a desiccant. None of these "desiccated" remedy parts (which were installed in older model year vehicles) are currently under recall for a degradation concern. Certain subsets of desiccated PSAN inflators using propellant 2004 for use as original equipment, however, have been recalled for a degradation concern. All Takata inflators produced with propellant 2004L contain desiccant, and none of these desiccated inflators using propellant 2004L are under recall for a degradation concern. There have been no reported field ruptures in any non-recalled desiccated PSAN inflators.It is understood that desiccants fully saturate at some threshold, at which point any additional moisture will not be captured. This means the degradation process observed in non-desiccated inflators using propellant 2004 may also occur in non-recalled desiccated inflators using propellant 2004, assuming additional moisture enters the inflator and high temperature cycling occurs. Based on available information, desiccant saturation can occur within the first five years in the worst environments, and the time required for full saturation is affected by multiple factors. While no present safety risk has been identified, further work is needed to evaluate the future risk of non-recalled desiccated inflators using propellant 2004.Three entities -- Takata (now known as TK Global), the Independent Testing Coalition, and Exponent -- have been studying the long-term behavior of Takata desiccated PSAN inflators using propellant 2004L (as well as 2004) in the presence of moisture and temperature cycling. The research efforts, which include development of predictive modeling techniques and field sample analysis, are ongoing. To date, none of the researchers have identified field evidence showing that propellant 2004L is undergoing a degradation process that leads to aggressive deployment and potential rupture. However, the time in service of such inflators remains short compared to that of the inflators using propellant 2004. Further study is needed to assess the long-term safety of desiccated inflators using propellant 2004L.The Office of Defects Investigation is opening this investigation to examine whether a safety defect related to propellant degradation exists in non-recalled desiccated PSAN frontal inflators manufactured by Takata. This investigation will require extensive information on Takata production processes and surveys of inflators in the field. Lists of recall actions that may have used desiccated PSAN inflators as remedy parts, as well as the makes and models originally manufactured with them, is available with the downloadable version of this document (see nhtsa.gov/recalls?nhtsaId=EA21002 -- note this information is subject to change/revision as the investigation proceeds). This investigation does not supersede EA15-001, which remains open.
- Front Roof Panel Detachment
On January 8, 2021, after ongoing review with Mercedes Benz, the National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation (ODI) opened PE21-001 to assess allegations of front roof panel detachments while driving at highway speeds in certain 2015 Mercedes-Benz (Mercedes) C-Class…
On January 8, 2021, after ongoing review with Mercedes Benz, the National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation (ODI) opened PE21-001 to assess allegations of front roof panel detachments while driving at highway speeds in certain 2015 Mercedes-Benz (Mercedes) C-Class vehicles.The subject front roof panel is a stationary panel composed of polycarbonate and is attached to the vehicle via adhesive at the time of manufacture. The panel is found on subject vehicles equipped with panoramic sunroofs. Over time, the subject panels may exhibit cosmetic degradation leading to replacement of the panel, a procedure which entails: removal of the old panel and adhesive, site preparation, and installation of a replacement panel with new adhesive.The consumer complaints that prompted the opening of PE21-001 all described detachments of front roof panels that had been replaced after the vehicle was put into service.Mercedes' internal investigation identified a broader scope of affected vehicles (2014-2020 CLA, GLA, C, S, GLC, and GLE class) and found the following potential service procedure- related causes of front roof panel detachments:- Improper surface pretreatments such as the use of the wrong primer or cleaner or scoring of the surface; or - Use of the incorrect adhesive.These conditions lead to a front roof panel bond that, even if sound at the time of repair, cannot maintain its strength over time and environmental exposure.Mercedes updated its service and parts ordering systems to reinforce the proper use of specified kits and procedures via webinars, shop foreman meetings, and explicit reference to the risks incurred by diverging from the repair procedures. Mercedes is also furnishing parts ordering assistance, and will hold dealerships accountable for improper repairs.ODI's analysis of the ten complaints it has received from the public (VOQ's) and MBUSA's complaint data submitted in response to the information request letter for PE21-001 identified a total of 57 non-duplicative reports alleging incidents in which the front roof panel detached from the vehicle while in motion. Included within the 57 reports are incidents where consumers state the panel detached ...and flew off into traffic.On March 19, 2021, Mercedes notified NHTSA that it would recall subject vehicles with front roof panels known to have been replaced after the original sale of the vehicle. In total, the recall (designated as Recall 21V197) covers 15,099 vehicles that were ever registered in the United States. Based on Recall 21V197 and the remedy implemented by Mercedes, further investigation does not appear to be warranted at this time.Accordingly, this investigation is closed.The ODI complaints cited above can be viewed at www.nhtsa.gov under the following ODI identification numbers: 11376425, 11352686, 11351629, 11349158, 11341541, 11337594, 11324100, 11311591, 11222127, 11404183
Service bulletins
Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.
- 11010907Complaint The flap of the reversing camera opens and closes by itself during forward travel. This happens several times during the trip. The customer notices the sound of opening and closing. No camera image is displayed in the head unit. The reversing camera or the 360 system functions normally when activated manually or by engaging drive range "R". This behavior occurs again during each driving cycle. Cause This is not a malfunction, but an intended system behavior: Calibration of the reversing camera is in progress. For this, the cover on the camera is opened for max. 5 cumulative minutes in forward travel. The calibration can be performed if the vehicle speed is < 35 km/h and the steering wheel angle is < 10 (for early vehicles from MFA2 facelift model series such as A-Class, CLA, etc., the 35 km/h (~22 MPH) opening limit may only be reached after the SCN coding is replaced). If the speed of 35 km/h (~22 MPH) is exceeded, the camera retracts and the calibration is therefore aborted. The sequence is started again once the speed returns to the range of 18 km/h (~11 MPH). Remedy Complete the calibration successfully. For this, the vehicle must be driven forwards for a certain time (usually significantly less than one minute) at a speed < 35 km/h (~22 MPH) and a steering wheel angle < 10. This should occur during daylight and without a vehicle following too closely (the camera must be able to see the asphalt). When calibration is successful, the camera flap closes automatically at an unchanged speed. For the rest of the driving cycle, the camera now only opens if the customer requests this, for example by applying the reverse gear. When starting a new driving cycle (ignition change), another calibration is required. The customer can generally perform calibration at the first attempt when a speed in the range between 15 km/h (~9 MPH) and 35 km/h (~22 MPH) is briefly maintained and can therefore play a significant role in reducing the actuation frequency and therefore also the noticeability of the noise to a minimum. In the case of early MFA2 facelift vehicles (A-Class, CLA, etc.), the parking control unit may have to be SCN-coded again to have the complete speed window available for the calibration.
- 11010818Complaint Transmission control unit Y3/8n4 (fully integrated transmission control unit (VGS)) not listed in quick test and/or no communication possible with VGS. Cause Transmission control unit Y3/8n4 Remedy It is important that LI54.15-P-057373 is processed before replacing any component parts (transmission 722.9). After processing and complying with the above documents, perform a reset on the transmission control unit Y3/8n4 (VGS) (ignition reset), check that the transmission connector is seated correctly and inspect the PINs for concerns. If communication with the VGS cannot be established afterwards, the component part 'electrohydraulic controller unit (EHS)' must be replaced, as it is not possible to transfer the valve characteristics under the above-mentioned conditions. Installation of a VGS repair kit is not permitted in this case.
- 11010755Complaint After a control unit replacement of "N112/9 - control unit for telematics services (HERMES)" or the "N112/2 - control unit for telematics services (RAMSES)", the Digital Extras (previously Mercedes me) cannot be activated. The DTC B15CE00 is active or active+saved. In vehicles with "N112/9 - control unit for telematics services (HERMES)": The message "SOS - service not activated" permanently lights up in the instrument cluster AND the actual value "Error when replacing certificate (CEP.36)" is displayed in the actual values for the activation status under "Registration status" (see picture 1). In the control unit log of the "N112/9 - control unit for telematics services (HERMES)", the registration error "CEP Invalid VIN/UniqueID combination" is displayed. In vehicles with "N112/2 - control unit for telematics services (RAMSES)": The actual value "Error when replacing certificate (CEP.36)" is displayed in the actual values for the activation status under "Registration status" (see picture 1). In the control unit log of the "N112/2 - control unit for telematics services (RAMSES)", the registration error "CEP_ VIN_UNIQUEID_INVALID" is displayed. The emergency call is not impaired. Cause In the event of a control unit replacement, sporadic problems in the back end could result in data from the new control unit not being updated in the back end system. Remedy Please create a TIPS case. In some cases, the problem rectifies itself on its own after a little while.
- 11010494Complaint Rear lamps fogged up/not leaktight. Cause Fogging of the rear lamps is a natural phenomenon, which can occur under certain climatic conditions. This does not lead to any technical impairment of the rear lamps. Remedy Rear lamp: Remedy 1: Clearing fogged/condensed rear lamps: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4 F) Note: Do not wash the vehicle or subject it to high-pressure cleaning before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the trunk. 4. Switch on the exterior lighting. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation -> a significant reduction in the formation of condensation must be clearly recognizable (defogging progress). Note: -If no reduction in the degree of fogging is visible, the rear lamp is defective and must be replaced. -It is not physically possible to defog the headlamps completely some residual fogging may remain. Fogging does not impair the functionality or the service life of the rear lamps. -Simultaneous fogging of multiple component parts indicates extreme climatic conditions and also does not impair the functionality or the service life of the rear lamps. Remedy 2: You can recognize a defective rear lamp as follows: 1. Check the rear lamps to ensure that no external damage is present, and that the differential aeration cells and the diaphragm are present and correctly seated. -> If there are signs of external damage on the rear lamp, the component parts must be replaced as per WIS instructions. 2. Check the electrical connectors of the plugs and pins. -> If moisture/corrosion/etc. is present, the component part must be replaced as per WIS instructions. 3. Check for leak tightness -> Close all openings with Terostat IX or similar and establish and stabilize via an overpressure (4050 mbar) via the plug. -> In the event of a sudden pressure drop, the component part must be replaced as per WIS instructions. Note: External damage to the rear lamps does not constitute a warranty or goodwill case.
- 11009122Complaint Washer fluid system leaks Cause Various possible causes: 1. Washer fluid reservoir itself. 2. Seal on washer fluid pump/washer fluid reservoir. 3. Washer fluid pump. 3.1. Distributor housing leaks. 3.2. Pump fitting leaks. 3.3. Washer fluid hose cannot be snapped into place on pump fitting. 3.4. Washer fluid hose will not stay on pump fitting, although connector OK. 4. Washer fluid line. 4.1 Connector will not stay on pump fitting because it is broken. 4.2 Sealing ring in connector missing. 4.3 Sealing ring in connector fitted, but deformed and therefore leaks. 4.4 Damage to washer line by animal. 5. Seal on heating washer fluid reservoir/washer fluid reservoir. Remedy Replace defective component parts only. Do not replace any adjacent component parts that are intact. Note: Repair kits for washer line hoses do exist to allow patches for line damage.
- 11008880Complaint After a control unit replacement of "N112/9 - control unit for telematics services (HERMES)" or the "N112/2 - control unit for telematics services (RAMSES)", the Digital Extras (previously Mercedes me) cannot be activated. The DTC B15CE00 is active or active+saved. In vehicles with "N112/9 - control unit for telematics services (HERMES)": The message "SOS - service not activated" permanently lights up in the instrument cluster AND the actual value "Error when replacing certificate (CEP.36)" is displayed in the actual values for the activation status under "Registration status" (see picture 1). In the control unit log of the "N112/9 - control unit for telematics services (HERMES)", the registration error "CEP Invalid VIN/UniqueID combination" is displayed. In vehicles with "N112/2 - control unit for telematics services (RAMSES)": The actual value "Error when replacing certificate (CEP.36)" is displayed in the actual values for the activation status under "Registration status" (see picture 1). In the control unit log of the "N112/2 - control unit for telematics services (RAMSES)", the registration error "CEP_ VIN_UNIQUEID_INVALID" is displayed. The emergency call is not impaired. Cause In the event of a control unit replacement, sporadic problems in the back end could result in data from the new control unit not being updated in the back end system. Remedy Please create a TIPS case. In some cases, the problem rectifies itself on its own after a little while.
- 11008712Complaint Check engine light on. One of the below fault codes is current in the engine control module (N3/10). P04DB29, P04DB31, P04DB79 Cause Open circuit or high resistance to crankcase vent line contact Remedy 1. Check the electrical connector for the relevant vent line contact switch noted below. Refer to attached photos of connection locations. 2. Ensure the bolted connection is secure and bolt can be torqued (9Nm). 3. Check continuity from vent line connection to ME control unit. Repair wire if damage is found. The circuit from ME provides 5V and is pulled to 0V when the ground connection is intact. M260 P04DB31- S88/15 P04DB79- S88/16 M264 P04DB31- S88/15 P04DB79- S88/16 P04DB29- S88/17 M270/M274 P04DB79- S88/5 Note: This repair is not warrantable if the connection was left loose during previous repair/maintenance.
- 11008091Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party during a call. It becomes increasingly difficult to understand as the speed rises. Cause A. Seating of the microphones in the headliner. Side edges are covered by the textile cover (see picture "1") B. Assembly of microphones (B25/20 or B25/21) in the headliner. C. Dirt inside the microphone housing Remedy 1. Press finger on rear of microphone (on adhesive tape) 2. Remove microphone cap from the front 3. Eliminate protruding material residues of the microphone cutout at the headliner, e.g. with a soldering iron. The microphone must be seated in the headliner as shown in picture "2". 4. Push microphone from behind until it is firmly pressed into the headliner 5. Maintain pressure and press/clip cap into microphone from the front. Note: The cover cap must be clearly heard and felt to engage. 6. This procedure must be carried out on both microphones (B25/20 and B25/21) Note: It is recommended to replace the cover caps. The non-woven cloth in the cover cap protects the microphone from soiling and must not be removed. NOTE: The information contained in this document is intended for use by trained, professional technicians with the knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes resulting in the same or similar symptoms or conditions described in this document, and trained professional service technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained in this document does not guarantee warranty coverage nor does it extend the vehicles warranty in any way.
- 11007974Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, physical fogging does not result in a technical impairment of the headlamp. A leak test must be performed to determine if physical fogging exists or if the headlamp is leaky. Remedy In advance, observe LI82.10-P-078301 "Headlamps or Front Fog Lamps Leaking or Fogged". 1. Prepare headlamp/check for external damage: For headlamps with a closed system 1. Check the headlamps for any external damage and check also for correct seating of the Gore-diaphragm/correct latching of the cover caps. 2. If the headlamp exhibits any external damage, replace the headlamp. For headlamps with an open system 1. Check the headlamps for any external damage and seal off the vent then make sure the cover caps are latched correctly into place. 2. If the headlamp exhibits any external damage, replace the headlamp. Note: A headlamp with external damage is not a warranty or goodwill case. 2. Leak test of headlamp with overpressure: Connect test adapter to pressure tester. (Figure 1) Check test adapter for leak tightness. To do so, connect plug and coupling (picture 2) and apply a maximum overpressure of 30 mbar. The pressure must remain constant. If the pressure does not remain constant, use a new adapter. Seal all the outlet openings using sealing compound and the given diaphragm with the plunger (picture 3). (Picture 4) Make allowance for the different headlamp variants here (there are different outlet openings). Check if the headlamp needs to be removed to gain access to the diagnostic socket on the headlamp housing. Plug the adapter onto the diagnostic socket on the headlamp housing. (Picture 5). Apply a maximum of 30 mbar overpressure to the headlamp housing. Note: If the maximum overpressure of 50 mbar is exceeded the headlamp seal will be damaged. If a pressure drop of less than 10 mbar is measured within 30 seconds, the headlamp is not leaky and the problem is down to natural physical fogging. If a pressure drop of more than 10 mbar is measured within 30 seconds, the headlamp is leaky. Note: The leaky position can be localized with the aid of soap suds. Replace any leaky headlamps. Note: Desiccant packs can be installed for headlamps that are not leaky. See: LI82.10-P-064766 Fogged headlamp, desiccant pack installed - open ventilation system LI82.10-P-078304 Fogged headlamp, desiccant pack installed - closed ventilation system
- 11007790Complaint Headlamps fogged or droplets forming. Cause Due to the housing cover with pressure compensation diaphragm, the headlamps are a "closed system". This means that the headlamps are protected against acid gases, dirt and exhaust gas. However, moisture can still enter from two sources. Through absorption and desorption (the commonest cause) or through permeation. Moisture is either absorbed by the plastic material and, when the light source is switched on, it is released from the plastic by desorption, or the moisture penetrates through the plastic materials of the headlamp from outside (permeation). This can lead to the formation of condensation on the lens of the headlamp. The headlamps comply with all applicable US standards and regulations. Remedy Check headlamps for natural fogging or condensation as per LI82.10-P-078301. If a reduction in the degree of fogging is visible, the desiccant packs can be used once the condensation has completely evaporated. Note: Order service covers and desiccant packs based on the validity description. 1. Remove existing service cover with diaphragm (Picture_01 (1)). 2. Insert desiccant packs (Picture_01 (2)) into new service covers with diaphragm and seal with protective grille and bolt down (Picture_01 (3)). Note: One desiccant pack is required for each small service cover, and two desiccant packs are required for each large service cover. 3. Stick the supplied diaphragm onto the new service cover and attach at the headlamp. Note: The bonding surface must be clean and dry. 4. If the headlamp housing has an additional 2nd diaphragm, this must be covered over with masking tape. Note: The bonding surface must be clean and dry. To ensure that the desiccant pack (absorption) acts effectively, the headlamp has to be air-sealed. Observe or check the following points for this: 1. Seals at the central connector must all be present and correctly fitted (Picture_02). 2. The new transparent diaphragm must be correctly bonded (Picture_03). 3. Check headlamp housing for any external damage.
- 11007753Complaint Headlamp or front fog lamp leaky or fogged Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. Headlamps comply with all applicable standards. If a pressure compensation diaphragm is fitted in the housing cover, then the lamp unit is a "closed system". Remedy Headlamp: Remedy 1 Clearing fogged/condensed LED headlamps and LED rear lamps: 1. Drive vehicle into workshop (temperature higher than +18 C/+64.4 F) and connect the exhaust extraction. Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the hood or trunk. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Clearing fogged/condensed halogen/xenon headlamps: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4F). Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine. 3. Open the hood. 4. Switch off the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Note: If there is no visible reduction in the formation of condensation, check the headlamp for a defect. (See Remedy 2) It is not physically possible to defog the headlamps completely. Fogging does not impair the operation or the service life of the headlamp. Remedy 2 A Damaged headlamp can be identified as follows: 1. Check the headlamp for external damage and that the cover caps and the diaphragm are correctly seated. 2. Check the electrical connectors of the plugs and pins. 3. Check for leak tightness in accordance with LI82.10-P-078307. The test can only be conducted on headlamps. 4. If the headlamp or the rear lamp has any external damage, replace the component part in accordance with the WIS instructions. Note: External damage to the headlamp/rear lamp or faulty seating of the cover caps does not present a warranty or goodwill case. With headlamps, it is possible to install desiccant packs if the problem occurs repeatedly. Open ventilation system: LI82.10-P-064766. Closed ventilation system LI82.10-P-078304
- 11005294Complaint Rear lamps fogged up/not leaktight. Cause Fogging of the rear lamps is a natural phenomenon, which can occur under certain climatic conditions. This does not lead to any technical impairment of the rear lamps. Remedy Rear lamp: Remedy 1: Clearing fogged/condensed rear lamps: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4 F) Note: Do not wash the vehicle or subject it to high-pressure cleaning before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the trunk. 4. Switch on the exterior lighting. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation -> a significant reduction in the formation of condensation must be clearly recognizable (defogging progress).
- 11003785Complaint Noise can be heard coming from the air conditioning system at higher blower motor speeds. Cause Leaves/foreign objects have entered through the water drain grille in the water drain thereby causing an imbalance and noise in the blower wheel. Remedy Remove any leaves/foreign objects from the blower and interior air filter (the blower does NOT need to be replaced). After this, more fine-grained grilles and sealing frames can be used that are better at filtering out leaves / foreign objects. Parts required for retrofitting: Sealing frame (A 247 835 12 00) Sealing frame (A 247 835 11 00) Plug-in mounting (A 000 991 56 04) Housing cover (A 247 830 95 03) Housing cover (A 247 830 63 03) Steps: 1- Remove windshield wiper as per the work instructions AR82.30-P-0001MFA 2- Remove cover for water drain as per the work instructionsAR83.10-P-1411MFB 3- Release threaded connections (5x 10 mm, 2x 8 mm) 4- Fasten released part temporarily using cable tie to hood. 5- Thoroughly clean body between fender and wiper motor then mount the sealing frame (A 247 835 12 00) using the self-adhesive tape. 6- Cut cable tie and insert plastic part again. Then thoroughly clean the area behind the mounted sealing frame. 7- Open plastic cap on firewall then vacuum the filter using a vacuum cleaner. Then tighten the threaded connections again. 8- Finally, insert sealing frame (A 247 835 11 00) and attach to body-in-white using plug-in mounting (A 000 991 56 04) 9 - Clean water drains. 10- Assemble in reverse order. 11- Place housing cover (A 247 830 95 03) and housing cover (A 247 830 63 03) on top of each other.
- 10248162Crease formation on genuine leather seat covers in vehicles with low mileage Objects left on the seats for extended periods of time (pressure marks). Objects wedged between the seat backrest and seat cushion (e.g. seat belt buckle). Light initial creases due to vehicle handling. Light creases in the outer covers originating from the production process (missing finish). Heat treatment of the seat covers using heat gun and plastic wedge. Be very careful to not overheat the seat material!
- 10246281Fault code P06DA00 is found current or stored in engine control unit. Check engine light may be activated. Various causes Up to Model year 2018 Fault code P06DA00 can be disregarded if not activating the check engine light, unless otherwise specified in the guided test. The vehicle continues to operate as designed. Further causes should be investigated if complaint of check engine light is received. If fault code P06DA00 is activating the check engine light, update software of the ME control unit. No further repairs needed if the code no longer activates check engine light after 2 drive cycles. Model year 2019 and later Fault code P06DA00 will activate check engine light as of model year 2019. No driveability concerns will be observed, only illumination of the CEL. This fault code indicates high resistance or open in the circuit to Y130 oil pump control valve. Perform guided test for component Y130 under list of tests in ME. Diagnose location of high resistance or open in Y130 circuit and repair as necessary. Warranty claims submitted without supporting guided test results may be subject to debit.
- 10244837The "SOS nonfunctional" message appears sporadically in the instrument cluster of the vehicle. The fault code B129C00 is stored in the control unit log. The message occurs in particular after the vehicle has been non-operational for an extended period of time; the message then disappears of its own accord after a few minutes. No functional limitation to the emergency call system is to be expected. Software error in N112/9 control unit for telematics services (HERMES). Software update for control unit N112/9 - Control unit for telematics services (HERMES) to software release E522.8. If, against expectations, the erroneous display of the message in the instrument cluster continues to occur following the update, please create a TIPS case.
- 10241790The Mercedes me connect services cannot be activated. The remote status data does not update. Error in N112/9 - control unit for telematics services (HERMES). In the HERMES control unit log, under the "URL" tab, the value DEFAULT is stored for "atpServerUrl" and/or "rcsServerUrl". Please carry out a re-commissioning of the control unit N112/9 - Control unit for telematics services (HERMES), which includes both a software update as well as coding. The fault will be rectified by the newly included coding. As a result of the software update to the current software of the control unit N112/9 - Control unit for telematics services (HERMES), this fault will no longer occur in future.
- 10241527Mercedes-Benz AG (MBAG), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2018-2023 C-Class, EQE, EQE SUV, EQS, EQS SUV, GLC, GLE and S-Class (206, 295, 294, 297, 296, 254, 167 and 223 platform) vehicles, the communication module software does not correspond with the latest series production configuration. The update is free of charge and will be carried out in the background. The installation will eliminate software errors for a better entertainment experience. The update will show after the ignition has been cycled. MBUSA will conduct an OTA service campaign. A workshop visit for the customer is not required since remote software updates are automatically downloaded and installed in the customers vehicle. The OTA may be validated as successful on the customers Mercedes Me connect app under Over-the-Air Vehicle Updates as Update for the communication module. If the OTA is successful it will show a green installed and date of installation in the Over-the-Air update section.
- 10219265Complaint Vibrations in steering at speeds lower than 30 mph. Possible when turning and also partly noticeable after changing to winter or all-season tires. Cause Controller stability of steering software, caused by reduced friction in steering (tolerance for production + running-in characteristics). Remedy Software update available in 1st quarter of 2023 (adaptation of stability limits)
- 10206077"MY15+ M278 and M157 Equipped Vehicles with Fault Code ""P023400 Boost Pressure is Too High"" "
- 10205247Traffic information service and posibly the voice control, nonfunctional after navigation software update.
- 10205154Gasket may settle causing a slight oil leak.
- 10205143Clacking noises from the front axle area.
- 10187785The following complaints may be noted by the customer: - The MBUX multimedia system (A26/17) starts route guidance without user input and does not provide any audio notification. - The MBUX multimedia system (A26/17) does not give any spoken or visual driving instructions. Only the destination information and the current route are shown in the MBUX multimedia system (A26/17)
- 10186132Humming/ vibrations/ noises from the area of the rear axle while maneuvering or when moving off
- 10179966Incorrect time and/or instrument cluster message "SOS, service not activated" and/or Mercedes Me connect services nonfunctional
- 10179907Engine diagnosis warning lamp activated - Fault code P012800
- 10172683Information Label on Tire Sealant
- 10172681Event memory in the instrument cluster mileage readings intermittently inaccurate
- 10169599Squeaking Noise from Exhaust Gas Flap
- 10167785G-Class Facelift 2018: Fault message "ABS, ESP inoperative, see operator's manual"
- 10167000Surface damage on steering wheel trim
- 10165847Diverse fault messages in instrument cluster. Distronic, ESP, tire pressure monitoring, engine indicator lamp Diverse CAN communication errors stored in quick test Possible malfunctions in Parktronic or Active Parking Assist. Possible malfunctions of PTC heater booster.
- 10162631Outside mirror folding out/in nonfunctional
- 10160622Audio 20: Apple CarPlay displays pixelated image
- 10158370Vehicle does not start, battery discharged.
- 10158322Cracking noise at limit stop of electric steering
- 10158321LED light on thermal cup holder in rear passenger compartment of BR 222 flickers
- 10158288Noises Made by M133 Exhaust Gas Flap
- 10158267COMAND Online: Some contacts on the telephone are not found via voice control.
Every Mercedes-Benz Gla 250 model year
Bars are owner complaints, dots mark years with recalls. Select a year to open its report.