2015 Mercedes-Benz GL450

Recalls

3 recalls name the 2015 Mercedes-Benz GL450. Newest first.

• Communication

  Nov 1, 2019NHTSA 19V78700024,226 vehicles

  Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2013-2017 vehicles due to a software fault that may cause the date and time for the emergency call system (eCall) to differ from the actual date and time, potentially relaying an inaccurate vehicle location. For a full list of the affected models visit…

  Risk and remedy

  Risk

  An inaccurate vehicle location may delay emergency responders, increasing the risk of injury.

  Remedy

  MBUSA has initiated an Over the Air (OTA) remote update. MBUSA will also notify owners, and dealers will check software for a successful OTA or update the communication module software as needed, free of charge. The recall began December 23, 2019. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2019120008.

  Full recall details →

• Suspension › Front

  Apr 27, 2018NHTSA 18V2720009,725 vehicles

  Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2012-2014 ML350 Bluetec 4Matic and ML550 4Matic, 2012-2015 ML63 AMG 4Matic and ML350 4Matic, 2013-2016 GL350 Bluetec 4Matic, GL550 4Matic and GL63 AMG 4Matic, 2017 GLS350d 4Matic, GLS450 4Matic, GLS550 4Matic and GLS63 AMG 4Matic, 2015 ML400 4Matic, 2016 GLE400 4Matic, GLE350 4Matic, GLE63 AMG 4Matic…

  Risk and remedy

  Risk

  The leaking oil in the presence of an ignition source can increase the risk of a fire.

  Remedy

  MBUSA will notify owners, and dealers will correct the oil level as necessary and replace the reservoir sealing cap to prevent oil foam from leaking out, free of charge. The recall began August 30, 2018. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2018070015.

  Full recall details →

• Power train › Axle assembly › Axle shaft

  Dec 14, 2016NHTSA 16V90000048 vehicles

  Mercedes-Benz USA, LLC. (MBUSA) is recalling certain model year 2015 GL350 4Matic Blutec, GL450 4Matic, GL550 4Matic, ML250 Blutec, ML350, ML350 4Matic, ML400 4Matic and 2015-2016 GL63 AMG 4Matic vehicles manufactured September 29, 2014 through March 27, 2015. The affected vehicles have axle bolts on the front and/or rear drive axle carriers that may not…

  Risk and remedy

  Risk

  If any of the remaining front or rear axle bolts fracture, the vehicle may be unstable, reducing the handling capability and increasing the risk of a crash.

  Remedy

  MBUSA will notify owners, and dealers will replace the axle carrier bolts, free of charge. The recall is began February 2017. Owners may contact MBUSA customer service at 1-800-367-6372.

  Full recall details →

Owner complaints

What owners report most

1. Engine7
2. Suspension3
3. Unknown or other3
4. Seats3
5. Power train2
6. Electrical system2
7. Visibility/wiper1
8. Electronic stability control (esc)1
9. Steering1
10. Structure1

Latest complaints

• Mar 31, 2026GAFire
  Engine · Unknown or other
  My 2015 Mercedes-Benz GLE 450 experienced an unexpected vehicle fire on Feb 13th 2026. The vehicle was just parked when I noticed smoke from the engine. The vehicle caught fire within a short period of time, and 911 was called. There was no known external cause for the fire. The incident appeared…

  My 2015 Mercedes-Benz GLE 450 experienced an unexpected vehicle fire on Feb 13th 2026. The vehicle was just parked when I noticed smoke from the engine. The vehicle caught fire within a short period of time, and 911 was called. There was no known external cause for the fire. The incident appeared to originate from the engine compartment. This created a serious safety hazard and posed a risk of injury and property damage. The fire required immediate response from the fire department, and the vehicle was declared a total loss. The vehicle is currently in the possession of the insurance company. This incident raises concerns about a potential mechanical or electrical defect. A vehicle should not catch fire under normal operating or parked conditions. I am requesting that this incident be reviewed as a potential safety defect.

• Aug 8, 2025CT
  Engine
  To Whom It May Concern: I am writing to formally request the National Highway Traffic Safety Administration’s assistance regarding a critical safety defect in my 2015 Mercedes‑Benz GL 450 (M278 engine). I purchased this vehicle in October 2024 with 76,000 miles, and it now has about 87,000 miles.…

  To Whom It May Concern: I am writing to formally request the National Highway Traffic Safety Administration’s assistance regarding a critical safety defect in my 2015 Mercedes‑Benz GL 450 (M278 engine). I purchased this vehicle in October 2024 with 76,000 miles, and it now has about 87,000 miles. Alarmingly, I recently received a quote for $13,000 to repair a camshaft failure and extensive electrical damage. I was unaware of these issues when I purchased this car. I bought it under the illusion that it would be a safe vehicle for me and my children. As a single parent and teacher I invested in this vehicle what I could afford and felt I had purchased a safe, reliable vehicle. I am devasted to have a proposal for repairs in excess of $13,000 from a Mercedes dealership who diagnosed the car. This caused me to do some research and I found the GL450 has a known and widespread defect. I also found, that this causes the cam shaft to need to be repaired and that this is not normal wear-and-tear—it is a systemic design vulnerability common across GL450 models. This can result in the engine seizing from what I was told and that directly poses a substantial risk when driving. From what I found this is a common issue with this car and I did not know that when I purchased it. This is a design flaw, not a misuse of the vehicle. Finally, a $13,000 repair to make this car safe and road ready is astronomical and is not aligned with a normal maintenance cost- manufacturer accountability is warranted here. I respectfully request that the NHTSA: Investigate whether a safety recall or extended warranty program is appropriate for this known defect in the GL450. Require Mercedes‑Benz to provide a comprehensive repair solution for me and repair this defect in my car's engine under the manufacturer's expense. And finally, for Mercedes to make customers affected by this aware of this engine defect and long term risks associated with this issue. Respectfully, Alyssa Begin

• Nov 22, 2024TX119,000 mi
  Engine
  The contact owns 2015 Mercedes-Benz GL450. The contact stated that the check engine warning light was illuminated. The vehicle was taken to the dealer, where DTC code: P060A00 was retrieved. The dealer determined that the solenoid valve had failed and needed to be replaced. The contact related the…

  The contact owns 2015 Mercedes-Benz GL450. The contact stated that the check engine warning light was illuminated. The vehicle was taken to the dealer, where DTC code: P060A00 was retrieved. The dealer determined that the solenoid valve had failed and needed to be replaced. The contact related the failure to TSB Number: 37 13 17 2029027/8. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 119,000.

• Jan 9, 2023NY110,000 miFire
  Engine
  The contact owned a 2015 Mercedes-Benz GL450. The contact stated that the vehicle was in the dealer for 12 days for an oil change. The contact's son drove the vehicle 2 days later, at an undisclosed speed when the vehicle started smoking from the engine. The contact's son pulled over when the…

  The contact owned a 2015 Mercedes-Benz GL450. The contact stated that the vehicle was in the dealer for 12 days for an oil change. The contact's son drove the vehicle 2 days later, at an undisclosed speed when the vehicle started smoking from the engine. The contact's son pulled over when the vehicle caught fire completely. The fire marshals came out to extinguish the fire, there were no injuries. No police report was filed. The vehicle was not diagnosed nor repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure. The failure mileage was approximately 110,000. The consumer stated the vehicle was taken for routine maintenance and twelve days later returned without an oil change. Oil was added to the vehicle and it started smoking.

• Mar 17, 2022CA
  Electrical system · Engine · Structure › Body
  The rubber sealing around the lift gate failed on the vehicle and water seeped inside the vehicle and entire bottom of the vehicle underneath the floor board thereby damaging the electronic components, engine wire harness and headliner thereby rendering the vehicle was beyond repair. This issue led…

  The rubber sealing around the lift gate failed on the vehicle and water seeped inside the vehicle and entire bottom of the vehicle underneath the floor board thereby damaging the electronic components, engine wire harness and headliner thereby rendering the vehicle was beyond repair. This issue led to mold to grow on the roof liner inside and on the seats which caused breathing issues for me and my family. This put our safety at risk! After talking the vehicle to authorized Mercedes Benz dealer in San Jose CA I was told that this is a known defect with the vehicle about which Mercedes Benz Inc is well aware for years and has not fixed it or recalled vehicles having this safety issue. I had purchased this vehicle from Mercedes Benz of Pleasanton on 6/10/2015 as Certified Pre Owned (CPO) but I was not informed that this safety issue existed. I was informed by Mercedes Benz of San Jose that the vehicle could not be repaired as mold would pose a health hazard for the occupants and the vehicle was deemed to be beyond repair and totaled. I had also purchased extended warranty at the time of purchase in 2015 but the dealership did not honor it for repairs.

• Feb 8, 2022WA
  Steering

  Steering wheel will not go up and down. It will go in and out. This needs a recall! This is a HUGE problem with many Mercedes.

• Jan 21, 2022VA
  Suspension

  The airmatic system in this vehicle fails continuously, causing the vehicle to bump up and down while driving. Unsafe to drive

• Dec 6, 2021WV
  Unknown or other

  The fixed portion of the Panorama Sunroof exploded while driving on the highway at 65mph in light traffic and temperatures were in the mid 40's. Glass shards fell on the passengers, including three young children under the age of 5. Repairs are being arranged by customer pay and insurance. Manufacture denies fault.

• Feb 1, 2021FL86,230 mi1 injury
  Engine
  Plastic coolant union on radiator hose going from the coolant expansion tank to the electric auxiliary coolant pump catastrophically failed when I was changing the lh driver side front headlight bulb. I was leaning over the front of the vehicle with my head down to view the back side of the…

  Plastic coolant union on radiator hose going from the coolant expansion tank to the electric auxiliary coolant pump catastrophically failed when I was changing the lh driver side front headlight bulb. I was leaning over the front of the vehicle with my head down to view the back side of the headlamp to remove the bulb, the plastic coolant union broke at this exact time shooting hot engine coolant all over my face. I've suffered 2ND and 3RD degree burns to my face, lips, neck and chest as a result. The vehicle engine was on, at idle speed, vehicle stationary in driveway.

• Dec 8, 2020MN
  Visibility/wiper

  Windshield has cracked on vehicle twice just sitting in the driveway has to be a manufacturer defect.

• Jan 8, 2020FL
  Electronic stability control (esc) · Power train · Suspension
  On 12/30/2017 we purchased a mercedes-benz certified pre-owned 'cpo' vehicle from mercedes benz of north palm beach. we arrived at the dealership in the afternoon sent by mercedes benz of west palm beach their affiliated dealership for the specific vehicle we purchased. When we arrived at the…

  On 12/30/2017 we purchased a mercedes-benz certified pre-owned 'cpo' vehicle from mercedes benz of north palm beach. we arrived at the dealership in the afternoon sent by mercedes benz of west palm beach their affiliated dealership for the specific vehicle we purchased. When we arrived at the dealership to view the vehicle, it was not detailed from the previous owner. On the test drive with our sales person I noted unusual noises and ride conditions in the vehicle. the salesperson assured us that it IS a cpo vehicle with an unlimited mileage warranty backing up bumper to bumper factory warranty. He gave us an implied oral warranty that the vehicle would be repaired to our satisfaction - 'not to worry'!

• Sep 17, 2019CA52,015 mi
  Unknown or other

  Same issue as recall campaign 2017020016 launch. the latch securing the the center console doors might not meet the requirements of fmvss 201. the same basic design of the recalled 2017 GLS class SUV center console has been in use in other GL and GLS models for a number of years.

• Sep 18, 2018CA25,000 mi
  Electrical system · Engine
  TL* the contact owns a 2015 mercedes-benz gl450. While driving 40 mph, the vehicle stalled and the pre-safety function limited warning indicator illuminated. The vehicle was pushed over to the side of the road by the contact and passenger. The contact attempted to restart the vehicle, but it failed…

  TL* the contact owns a 2015 mercedes-benz gl450. While driving 40 mph, the vehicle stalled and the pre-safety function limited warning indicator illuminated. The vehicle was pushed over to the side of the road by the contact and passenger. The contact attempted to restart the vehicle, but it failed to start. The vehicle was towed to mercedes-benz of arcadia (101 n santa anita ave, arcadia, ca 91006, (626) 701-8904) where it was diagnosed that a loose screw was not fastened by the manufacturer and an unknown wire was detached, which caused the vehicle to stall. The vehicle was not repaired. The manufacturer was made aware of the failure and did not assist. The approximate failure mileage was 25,000.

• Aug 20, 2018VA65,000 mi
  Suspension
  GL 450 with vin [xxx] experienced exact problem defined by nhtsa recall # 18v272 in may 2018 (2 or 3 weeks prior to receiving recall notice from mercedes-benz USA). dealership, mercedes-benz of midlothian virginia, performed repair work required (based urgent need from mil saying "do not drive…

  GL 450 with vin [xxx] experienced exact problem defined by nhtsa recall # 18v272 in may 2018 (2 or 3 weeks prior to receiving recall notice from mercedes-benz USA). dealership, mercedes-benz of midlothian virginia, performed repair work required (based urgent need from mil saying "do not drive vehicle. Mb midlothian repaired the active suspension system by replacing the "sealing cap" on the "acs oil reservoir" - the exact repair specified in the recall. I was charged in excess of $400 for this repair as the dealership "had not yet received official notice that the recall would include (my) vehicle." upon receiving the official recall letter in june 2018, I contacted mercedes-benz USA. Mb-usa told me that the work I had paid for was, indeed, covered by the recall, and that mb dealership should reimburse me for the charges and re-charge mb-usa. on august 20, I again contacted mb midlothian who told me that I needed to file with mb-usa for reimbursement. so i, again, contacted mb-usa and asked for reimbursement. mb-usa, again, told me "no", the dealership must initiate the process and provide reimbursement. mb-usa rep said that the dealership should reimburse me since the work conducted was now a recall. Payment for the recall IS directly between mb-usa and mb-dealership. However mb-midlothian dealership said that "this IS not the way it works." this IS an issue between mb-usa and mb-dealership-not me. I, the customer, am caught by the finger-pointing in the middle with no resolution.this IS a known major safety issue identified by a recall !!! mb-usa and their dealerships work it out, and not leave customers with no resolution because of their incompetence. I am a phd automotive engineer, but do not work for or get paid by mb. thus, as a very frustrated customer, I am caught in mb bureaucracy with no resolution or acceptance of responsibility. information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(B)(6). *Tr

• Dec 25, 2015PA5,200 mi
  Seats

  Second row head rest does not adjust to different positions making it unsafe for children.

• Jun 23, 2015NY5,000 miCrash
  Power train
  TL* the contact owns a 2015 mercedes benz gl450. While in park, the vehicle started to roll forward as if the vehicle were in drive. The vehicle rolled over a curb and crashed into a tree. the vehicle was driven to the dealer for diagnostic testing, but was not repaired. No injuries were sustained…

  TL* the contact owns a 2015 mercedes benz gl450. While in park, the vehicle started to roll forward as if the vehicle were in drive. The vehicle rolled over a curb and crashed into a tree. the vehicle was driven to the dealer for diagnostic testing, but was not repaired. No injuries were sustained and a police report was not filed. The manufacturer was not notified. The failure mileage was 5,000. The vin was not available.

• Jan 2, 2015TN2,000 mi
  Seats

  Tried to install child safety seats in 2ND row seats. the 2ND row headrests prevent the proper installation of the child safety seats. the headrests cannot be removed, or moved out of the way so that the child safety seats can be installed properly. I have reported to our mercedes-benz dealer. they are working on a response. *tr

• Dec 10, 2014NJ2,000 mi
  Seats › Front assembly › Head restraint

  TL* the contact owns a 2015 mercedes benz gl450. The contact stated that the headrest prevented the contact from properly installing a child safety seat in the rear of the vehicle. The contact mentioned that the headrest could only be removed by the dealer. The vehicle was taken to the dealer, but was not diagnosed or repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 2,000.

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.
• 11010750Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements. Sound file attached for comparison. NOTE: Steering functionality is not affected. For 192 and 232: Only affects vehicles up to FIN vehicle identification end number. If vehicle falls outside of FIN range, create a TIPS case. Model series 192: xxx xxx xx 002 876 Model series 232: xxx xxx xx 022 312 Cause Contact area between wheel bearing and steering knuckle. Remedy 1. Perform Operation A and evaluate by testing vehicle. 2. If noise is still present, perform Operation A again. 3. If noise is still present after re-testing, perform Operation B. Operation A: 1. Clean contact surfaces of wheel bearing and steering knuckle with brake cleaner (see areas marked blue in pictures "2.jpg" and "3.jpg"). NOTE: The front area of the wheel bearing and the seals must not come into contact with the cleaner, otherwise, the sealing rings will be damaged. 2. Clean threads of wheel bearing mounting. 3. Thinly coat contact surfaces of wheel bearing and steering knuckle with Molykote (annular joint grease) (see areas marked blue in pictures "2.jpg" and "3.jpg"). Operation B: 1. Replace steering knuckle. 2. Wheel bearings do not need to be replaced.
• 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.
• 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.
• 11008070Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements. Sound file attached for comparison. NOTE: Steering functionality is not affected. For 192 and 232: Only affects vehicles up to VIN vehicle identification end number. If vehicle falls outside of VIN range, create a TIPS case. Model series 192: xxx xxx xx 182881 Model series 232: xxx xxx xx 182883 Cause Contact area between wheel bearing and steering knuckle. Remedy 1. Perform Operation A and evaluate by testing vehicle. 2. If noise is still present, perform Operation A again. 3. If noise is still present after re-testing, perform Operation B. Operation A: 1. Clean contact surfaces of wheel bearing and steering knuckle with brake cleaner (see areas marked blue in pictures "2.jpg" and "3.jpg"). NOTE: The front area of the wheel bearing and the seals must not come into contact with the cleaner, otherwise, the sealing rings will be damaged. 2. Clean threads of wheel bearing mounting. 3. Thinly coat contact surfaces of wheel bearing and steering knuckle with Molykote (annular joint grease) (see areas marked blue in pictures "2.jpg" and "3.jpg"). Operation B: 1. Replace steering knuckle. 2. Wheel bearings do not need to be replaced.
• 11008064In our continuing efforts to ensure the proper performance and quality of your vehicle, we are writing to inform you that on certain Model Year 2011-2018 C-Class, E-Class, S-Class, G-Class, CL, CLS, ML, GL, GLE, GLS, GLC, SL, and AMG GT vehicles with 6 and 8 cylinder gasoline engines, the software of the engine control unit may not meet current specifications. Under certain conditions, the catalyst heating might not work. Therefore, an Emission Service Campaign is being conducted to remedy the situation. Our records indicate that your vehicle is included in the affected population of vehicles.
• 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
• 11006658Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (MY) C-Class, E-Class, S-Class, G-Class, CL, CLS, ML, GL, GLE, GLS, GLC, SL, and AMG GT (204, 205, 207, 212, 213, 217, 221, 222, 463, 216, 218, 166, 292, 253, 231, and 190 platforms) vehicles with 6 and 8 cylinder gasoline engines, the software of the engine control unit may not meet current specifications. Under certain conditions, the catalyst heating might not work. MBUSA will conduct an Emission Service Campaign. An authorized Mercedes-Benz dealer will update the engine control unit software on the affected vehicles. Affected customers will be notified via First Class letter to have the update performed on their vehicle.
• 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).
• 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!
• 10207199Complaint The range of the integrated garage door opener (GTO) is too short. Cause 1. Vehicles equipped with infrared windows and/or a heated windshield may suffer from complaints involving low transmission power. 2. When comparing the range between the integrated GTO and the garage door hand transmitter, the garage door hand transmitter is tested outside the vehicle. 3. The garage door hand transmitter is being aimed towards the garage door, but the vehicle is in a different position. 4. The garage door drive is old. Remedy 1. The lower level of transmission power is mainly perceived by customers who did not have any infrared windows (code 595) or all-round infrared windows (code 596) or heated windshield (code 597) in their previous model or who have another model without this special equipment in their fleet. The loss in transmission has technical reasons, i.e. a thin metal film is fitted in the windows. Please consider these codes and advise the customer accordingly! Replacing parts does not remedy the problem. 2. Perform the comparison test between the integrated GDO and the garage door hand transmitter under identical conditions. The garage door hand transmitter must be inside the vehicle and must be held at the height of the inside rearview mirror. 3. The customer instinctively aims the garage door hand transmitter towards the door. However, the transmission direction of the integrated GDO depends on the position of the inside rearview mirror, and thus depends directly on the position of the vehicle relative to the receiving antenna of the garage door drive.
• 10207198Complaint The garage door hand transmitter cannot be initialized with the integrated garage door opener in the inside rearview mirror. Cause 1. The integrated garage door opener (GDO) is not compatible with the opening system installed in the garage. 2. The garage door drive uses a rolling code system. In contrast to the fixed code system, the LED in the mirror in this case flashes green after programming. 3. When the handheld remote control is initialized with the integrated GDO, the distance between the handheld remote control and the GDO is too long or too short. 4. The maximum programming time of the hand transmitter was exceeded. The hand transmitter switches itself off after 10s to 20s. However, the garage door opener needs up to 30s to learn the code. 5. The maximum programming time of the integrated GDO was exceeded. The integrated GDO has aborted programming unsuccessfully. 6. The GDO cannot be programmed after replacement (See #9). 7. The batteries of the hand transmitter are too weak. 8. A part of the signal was not registered correctly. 9. The GDO is not programmed to US standards. 10. Errors with Chamberlin MyQ, Liftmaster MyQ, or Craftsman AssureLink systems causing loss of synchronization. Remedy Note: The numbering of the remedies refers to the numbering of the causes. 1. Installation of a universal receiver. Order via the Homelink Hotline. 2. In the case of garage door drives with rolling code system, synchronization of the garage door drive must also be performed. 3. Keep the correct distance when initializing! This can vary between 5 and 20 cm depending on the system. If the initialization attempt is unsuccessful, repeat the initialization process, changing the distance between the hand transmitter and the mirror.
• 10206077"MY15+ M278 and M157 Equipped Vehicles with Fault Code ""P023400 Boost Pressure is Too High"" "
• 10205814Fuel filler flap opens slowly/switch flashes/tank is bleeding instrument cluster warning
• 10205265Outside mirror fogged.
• 10205251Engine fan runs continuously, a/c inoperable or, engine light illuminates sporadically.
• 10205250Engine fan runs continuously, a/c inoperable or, engine light illuminates sporadically.
• 10205248"SOS mbrace service not activated".
• 10205247Traffic information service and posibly the voice control, nonfunctional after navigation software update.
• 10205236"Metadata loss- Please reimport all media data".
• 10205234Software update of COMAND Online control unit.
• 10205233Mobile phone cotacts are not transferred completely.
• 10205226High beams not functioning when first operated.
• 10205147Ticking or pulsing noise from high-pressure pump and/or fuel injectors.
• 10187793Mercedes-Benz AG (?MBAG?), the manufacturer of Mercedes-Benz, has determined that on certain Model Year (?MY?) 2013-2017 B-Class, C-Class, CLA-Class, CLS-Class, E-Class, G-Class, GL-Class, GLA-Class, GLC-Class, GLE-Class, GLK-Class, GLS-Class, GT-Class, M-Class, S-Class, SL-Class, and SLK-Class (117, 156, 166, 172, 190, 204, 205, 207, 212, 217, 218, 222, 231, 242, 253, 292, and 463 platform), the software for the PASS control unit does not meet current series production configuration and therefore the possibility exists that a correct GPS position cannot be determined in the control unit for location based services, and an incorrect vehicle position may be displayed. Please note the E-call feature is not impacted by this issue. What We?re Doing MBUSA will conduct a Service Campaign. An authorized Mercedes-Benz dealer will update the PASS Control Unit Software
• 10184799Mercedes-Benz USA, LLC (?MBUSA?) has entered into an agreement with the United States Department of Justice (DOJ), the Environmental Protection Agency (EPA), the California Air Resources Board (CARB), and the California Attorney General?s Office (CA AG) regarding the emission control system in certain Mercedes-Benz diesel vehicles. As part of this agreement, MBUSA will offer field measures referred to as the Approved Emission Modification (?AEM?) for the affected vehicles. As a result, certain vehicles covered under this notification cannot be sold or caused to be sold, or leased or caused to be leased, or introduced into commerce, or exported from the United States to another country, until after the AEM described in this notification is performed.
• 10184797Mercedes-Benz USA, LLC (?MBUSA?) has entered into an agreement with the United States Department of Justice (DOJ), the Environmental Protection Agency (EPA), the California Air Resources Board (CARB), and the California Attorney General?s Office (CA AG) regarding the emission control system in certain Mercedes-Benz diesel vehicles. As part of this agreement, MBUSA will offer field measures referred to as the Approved Emission Modification (?AEM?) for the affected vehicles. As a result, certain vehicles covered under this notification cannot be sold or caused to be sold, or leased or caused to be leased, or introduced into commerce, or exported from the United States to another country, until after the AEM described in this notification is performed.
• 10176670To enhance the satisfaction of our customers, avoid further costs of litigation and return focus to its core businesses, Mercedes-Benz USA, LLC (MBUSA) has entered into a settlement regarding claims relating to alleged mold and mildew type odors originating from the HVAC system in certain Mercedes-Benz vehicles. As part of the settlement, MBUSA has agreed to offer sliding-scale warranty coverage for certain vehicles diagnosed as having mold or mildew type odors originating from the HVAC system?although that coverage will not take effect until the settlement is judicially approved and other events occur; likely not until December 7, 2020 at the earliest (see below). If the settlement becomes effective, coverage will include cleaning of the evaporator and replacement of the HVAC filters
• 10171637Retrofitted front door exit lamps with logo projection flicker
• 10167564Customer experiences low battery conditions, resulting in jump starts, and eventually requiring battery replacement.
• 10167563The COMAND unit does not start or the COMAND display remains dark. The COMAND unit cannot be operated. Note: The problem disappears after a lengthy idle period (>6h) or after interrupting the power supply (circuit 30).
• 10167546FC 2783 (Friction power of torque converter lockup clutch is too high) or FC 0741 (Actuation of torque converter lockup clutch not possible) stored in transmission control unit. One possible additional customer complaint could be "poor acceleration" e.g. due to engine intervention. This can affect all NAT2FE+ (7G-TRONIC PLUS) vehicles with engines OM651, OM642LS and M278 in the production period from 04/2011 to 02/2012 and with more than 10,000 km. The two fault codes can also occur in combination with rpm sensor faults (see also GI27.50-P-035556). The rpm sensor fault is not connected with this complaint.
• 10167487Minor leaks at the oil duct of the left or right cylinder head of engines 157, 276 and 278. 1. Left cylinder head: Oil passage plug hole on left beside mechanical vacuum pump. 2. Right cylinder head: Oil passage plug hole below high-pressure pump housing.
• 10166988Collision Prevention Assist (CPA) may warn for no obvious reason (optical and/or acoustic warning message).
• 10166976Message in instrument cluster "DISTRONIC PLUSCurrently Unavailable - See Owner's Manual"

Every Mercedes-Benz GL450 model year

Bars are owner complaints, dots mark years with recalls. Select a year to open its report.