2014 Mercedes Benz B-Class Electric
Safety record from NHTSA: recalls, owner complaints, investigations and service bulletins.
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Vehicles › Mercedes Benz › B-Class Electric › 2014
These records cover every 2014 Mercedes Benz B-Class Electric. To see whether one car still needs a recall repair, decode its VIN or check it with NHTSA.
Recalls
2 recalls name the 2014 Mercedes Benz B-Class Electric. Newest first.
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.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain model year 2014-2015 B-Class Electric Drive vehicles manufactured November 21, 2013, to May 26, 2015. Due to a communication error within the electric drive system, the electric powertrain unit may shut down, temporarily immobilizing the vehicle and resulting in a loss of propulsion power.
Risk and remedy
Risk
A vehicle stall increases the risk of a crash.
Remedy
MBUSA will notify owners, and dealers will update the electric drive system software, free of charge. The recall began on December 2, 2015. Owners may contact MBUSA customer service at 1-800-367-6372.
Owner complaints
20 complaints
What owners report most
Latest complaints
- Power train
The contact owns a 2014 Mercedes-Benz B-Class Electric Drive. The contact stated that after stopping at a stop sign, the vehicle lost motive power before the "Malfunction visit workshop" and "Stop switch engine off" messages were displayed. After restarting the vehicle, the vehicle returned to…
The contact owns a 2014 Mercedes-Benz B-Class Electric Drive. The contact stated that after stopping at a stop sign, the vehicle lost motive power before the "Malfunction visit workshop" and "Stop switch engine off" messages were displayed. After restarting the vehicle, the vehicle returned to normal functionality; however, the failure recurred more frequently. No warning lights were illuminated. The vehicle was towed to the dealer and diagnosed with an electric drive motor failure. The contact was informed that the electric drive motor needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. After investigating the failure, the contact related it to technical service bulletin 2015070002. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 62,700.
- Engine · Power train
Coolant leak causing catastrophic drive unit failure.
- Unknown or other
Coolant in electric motor . Needs to replace motor . Diagnosed by Mercedes dealer WI Simonson 1626 Wiltshire blvd Santa Monica ca 90403 4105264700 # 525134 March 7,2022 Mileage 63371 Get signal on the garage.
- Power train
Motor suddenly stopped on highway. This was extremely dangerous. Vehicle transported to Mercedes Benz, they have indicated the electric drive motor has failed. This is the second drive motor in this car that has failed in only 48K miles. We have two of these cars, same year and model. The…
Motor suddenly stopped on highway. This was extremely dangerous. Vehicle transported to Mercedes Benz, they have indicated the electric drive motor has failed. This is the second drive motor in this car that has failed in only 48K miles. We have two of these cars, same year and model. The motor has also failed in the other vehicle. There is an entire Facebook group talking about failures of the drive units in these cars. PLEASE FORCE MERCEDES TO DO SOMETHING!
- Electrical system · Power train
TL* the contact own a 2014 mercedes benz b-class electric. The contact stated while his wife was driving 55 mph, an unknown yellow warning light illuminated indicating assistance required. The driver continued to drive the vehicle and shortly after, while attempting to park on the side of the road…
TL* the contact own a 2014 mercedes benz b-class electric. The contact stated while his wife was driving 55 mph, an unknown yellow warning light illuminated indicating assistance required. The driver continued to drive the vehicle and shortly after, while attempting to park on the side of the road, another red warning light was illuminated and the vehicle stalled. The vehicle was not drivable. The vehicle was towed to the local dealer mercedes-benz of alexandria (200 s pickett st, alexandria, va 22304, (703) 341-2100) where it was diagnosed with needing the drivetrain to be replaced. The vehicle had been repaired however, the failure recurred. The vehicle was towed to euro motorcars appearance center (4932 bethesda ave, bethesda, md 20814, (301) 654-8153) where it was diagnosed with needing the drivetrain to be replaced. The vehicle was not repaired. Upon investigation, the contact associated the failure with nhtsa campaign number: 15v655000 (electrical system) however, the vin was not included. The manufacturer was informed of the failure. The failure mileage was approximately 12,000.
- Service brakes
This IS an electric vehicle. in normal operation, when the car IS slowing, and almost at a stop, it comes out of regenerative braking mode, and enters thrust mode, so that if the brake IS released when stopped, the car will begin to roll. in this vehicle, sometimes the car exits regenerative…
This IS an electric vehicle. in normal operation, when the car IS slowing, and almost at a stop, it comes out of regenerative braking mode, and enters thrust mode, so that if the brake IS released when stopped, the car will begin to roll. in this vehicle, sometimes the car exits regenerative braking mode and enters thrust mode when slowing at high speed, such as when exiting a highway ramp. this IS extremely dangerous, as braking IS momentarily and unexpectedly lost when it IS needed most. I took the car into the dealership, and they were unable to find any issues or fault codes. as the issue IS intermittent, I am stuck. *tr
- Power train
When attempting to reverse out of parking stall vehicle would not move, almost as if emergency brake was being applied even though ebrake was off. turning on and off ignition did nothing. replace 12 v battery did nothing. warranty work on control unit performed multiple times in 2017/2018/2019…
When attempting to reverse out of parking stall vehicle would not move, almost as if emergency brake was being applied even though ebrake was off. turning on and off ignition did nothing. replace 12 v battery did nothing. warranty work on control unit performed multiple times in 2017/2018/2019 even though the software 'fixed' the issue related to the recall nhtsa campaign ID: 15v655000 in 2015. dealer states must replace entire power train at a cost of $11,500. vehicle has 72K miles and loan balance IS over $12K. the power train provided by tesla was replaced in tesla's own vehicles as well as in toyota RAV4 models from the same year.
- Electrical system · Engine and engine cooling · Fuel system, gasoline
Vehicle battery warning light came on instructing to stop driving vehicle immediately. Like so many other owners who have filed complaints, mercedes dealer-mechanic said that coolant had gotten into battery and drive unit needs to be replaced. Estimated cost $12,000 - rendering car totalled.…
Vehicle battery warning light came on instructing to stop driving vehicle immediately. Like so many other owners who have filed complaints, mercedes dealer-mechanic said that coolant had gotten into battery and drive unit needs to be replaced. Estimated cost $12,000 - rendering car totalled. Independent EV specialist has pressure tested cooling system and finds no leaks. fortunately, I was in a safe place at the time I needed to stop the car. If I had been out on the freeway during heavy traffic or at night, this would have been unsafe. If there are problems with the coolant and drive unit, it leads me to believe that problem could lead to fire, if not potential crash if driver loses power in congested traffic at high speed. As an all electric car, brakes and transmission rely on power to safely bring car to a stop.
- Engine
The "malfunction" light appeared and vehicle lost power immediately. after coming to a complete stop, then switching the ignition off and back on again, the car operated normally and the "malfunction" light disappears. this occurred three times: during highway driving (55 mph), on a country…
The "malfunction" light appeared and vehicle lost power immediately. after coming to a complete stop, then switching the ignition off and back on again, the car operated normally and the "malfunction" light disappears. this occurred three times: during highway driving (55 mph), on a country road (45 mph), and at almost a stop (5 mph). one occurrence was in the early evening on a hot day and two were early in the morning when temperatures were cool. two of these failures were very dangerous circumstances and it IS very lucky that no one was nearby on the road at that time. since it IS a fully electric car it loses momentum very quickly and I had to desperately look for a turnout at once. one time my two young children were in the back seat of the car. mercedes benz dealership diagnosed the cause to be the drive unit at a cost of $9,000. they claim this IS a different problem than the previous recall (which the car had completed). I have read through the previous recall information and it sounds very much like what this car IS doing. I would like to request the nhtsa investigate whether the previous recall actually fixed the problem. the car has 30,000 miles but mercedes benz refuses to fix the car because the warranty expired in december 2018 (seven months ago). they only offer a 4 year/50,000 mile warranty (whichever occurs first).
- Fuel/propulsion system · Service brakes
This IS an electric vehicle. when slowing down the paddle shifters can be used to put the car in 'd-' mode, for more aggressive engine braking. this increases the rate of decl without using the mechanical brakes. this has worked well for four years and 65,000 miles. today there was a 'one time'…
This IS an electric vehicle. when slowing down the paddle shifters can be used to put the car in 'd-' mode, for more aggressive engine braking. this increases the rate of decl without using the mechanical brakes. this has worked well for four years and 65,000 miles. today there was a 'one time' malfunction. I did the usual 'd-' 'down shift' to slowdown from 30 mph, in traffic, for red light. the car did not aggressively slow down and I applied the brakes. I noticed the car need excessive break pedal pressure to make what should be a normal stop. I glanced down at the power meter and it IS indicating power IS still being applied to the motor. the indicator was half way to the first tic and dropping as I slow down. this IS about 25 amps powering the motor, not recharging the battery. this aggressive braking incident IS not related to cold the weather battery protection mode where engine breaking IS disabled until the battery reaches minimum operating temperature. the outside air temperature was 40F. to recap, while applying the mechanical brakes, the electric motor was still producing power as indicated by the ammeter, stopping the car required more than the usual amount of brake pressure.
- Engine · Power train
On september 20TH, 2018, the car suffered a sudden and abrupt catastrophic shut down while I was driving my son to school. we were on city streets driving straight at normal speed and it stalled right in an intersection but I was lucky to be able to still have some momentum to get into the left…
On september 20TH, 2018, the car suffered a sudden and abrupt catastrophic shut down while I was driving my son to school. we were on city streets driving straight at normal speed and it stalled right in an intersection but I was lucky to be able to still have some momentum to get into the left turn lane. there was a flashing red text warning on the display for a few seconds- something about turn off immediately and do not restart. Then the car shut down. I was terrified that we would get into an accident all throughout the time we had to wait for the tow truck. if this had happened on the freeway, it would have been disastrous. note that the electric drive unit on this car was replaced on the following dates: 3/5/18 - 3/15/18(10 days to repair) 9/20/18- 10/3/18 (14 days) on 10/10/18 the car suffered another "malfunction visit workshop" and has been in the repair shop since 10/11/18. The car was towed. it appears to be the electric drive unit again and will be the third time it IS replaced. I believe this car IS defective and dangerous and mercedes benz does not appear to be able to repair the problem. I have read about similar drive unit replacements from other b class owners.
- Electrical system
Electric charger cable burnt itself and causing fire danger. mercedes does not give support for this fire hazard. these electric chargers are used at home (in garage) etc. While charging the electric car. mercedes does not stay behind its electric charger that causes extreme danger. *js
- Electrical system
In preparing to leave a parking lot on november 23, 2016 in hillsboro, oregon, the b-class mercedes-benz electric drive automobile refused to move and a message appeared in the instrument panel saying "have me towed to a dealer" or somesuch. vehicle was transported to beaverton, oregon…
In preparing to leave a parking lot on november 23, 2016 in hillsboro, oregon, the b-class mercedes-benz electric drive automobile refused to move and a message appeared in the instrument panel saying "have me towed to a dealer" or somesuch. vehicle was transported to beaverton, oregon mercedes-benz where the diagnosis was a defunct main traction battery. battery, which costs about 90 percent of the msrp of the automobile, was ordered from germany and arrived on or about december 9, 2016 as a warranty replacement. vehicle IS reported to be ready for pick up on december 15. no accident was involved, though had the traction battery ceased to provide power while the vehicle was in motion, the outcome might have been different. no indication of impending battery failure was noted. the battery powered the vehicle 12 miles to a parking lot in hillsboro from our residence, but on attempt to power the parked vehicle from the parking lot, there was no response other than a message to tow the vehicle to a dealer. the b-class in question had a few miles over 20,000 on the clock and had been in service for less than 2 years. vehicle IS leased for 36 months. with this experience, we will be going back to the toyota prius as our green vehicle.
- Engine · Fuel/propulsion system · Power train
Extremely dangerous sudden loss of power while driving 70+ mph on busy highway. was almost involved in a serious traffic collision because it a stopped in the road. attempts to restart the vehicle failed. could not get the vehicle out of "park" and was unable to switch it into "neutral"…
Extremely dangerous sudden loss of power while driving 70+ mph on busy highway. was almost involved in a serious traffic collision because it a stopped in the road. attempts to restart the vehicle failed. could not get the vehicle out of "park" and was unable to switch it into "neutral" to roll the vehicle out of the lane of high speed traffic. The inability to get the vehicle into "neutral" further compromised my safety and the safety of other drivers on the highway. main low voltage 12V battery died soon after incident and created an issue for tow truck operator. He had a lot of trouble getting it into neutral because there seems to be no standardized manual / mechanical method to release the parking prawl in the transmission unless the low voltage 12V system IS fully functioning. perhaps they need to replace the entire drivetrain unit like tesla has done or their customers. electric powertrain unit used in the mercedes IS identical to early tesla vehicles. telsa redesigned and updated these powertrain units with free replacements that resolve this issue completely. mercedes needs to do the same repair for customers as tesla did. software update IS obviously not a sufficient fix for this issue, there must be physical faults as well. another issue IS a mystery clunk that you can feel thru the accelerator pedal when starting from a complete stop. several attempts to get service techs to fix this but they have been unable to fix it. Perhaps it IS related to the well known early production tesla drivetrain defects. my vehicle currently has 43,276 miles. this vehicle already had the software update that was supposed to guarantee that the sudden loss of power would not happen again. (( nhtsa campaign number: 15v655000 )) I hope mercedes steps up to solve this issue like telsa has done for their customers.
- Visibility › Windshield
TL* the contact owns a 2014 mercedes-benz b-class electric. While driving at an unknown speed, the front windshield was struck by a pebble. After a week, the contact noticed that the front windshield was fractured and did not fit properly into the vehicle. The contact mentioned that the front…
TL* the contact owns a 2014 mercedes-benz b-class electric. While driving at an unknown speed, the front windshield was struck by a pebble. After a week, the contact noticed that the front windshield was fractured and did not fit properly into the vehicle. The contact mentioned that the front windshield should be thicker and was a safety hazard. The manufacturer was notified of the failure. The failure mileage was 13,619.
- Electrical system · Engine · Power train
While operating the vehicle on the road the car lost the ability to accelerate beyond 10 mile per hour; fortunately, we were just blocks away from our home. My wife call the service center and they picked it up and provided her with a loaner. while driving at 35 mph, the vehicle decelerated…
While operating the vehicle on the road the car lost the ability to accelerate beyond 10 mile per hour; fortunately, we were just blocks away from our home. My wife call the service center and they picked it up and provided her with a loaner. while driving at 35 mph, the vehicle decelerated without warning. The vehicle was taken to the dealer for diagnostic testing. The technician performed a software update on the vehicle. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 8,184.
- Power train · Service brakes · Unknown or other
Beginning at about 4500 miles we brought the car in to the shop after coming to a stop; we call it the 'clomp!' it will unexpectedly rock forward creating a very unsafe feeling. then the following month, the 'clomping' presented itself again so my wife returned the vehicle to the dealership to…
Beginning at about 4500 miles we brought the car in to the shop after coming to a stop; we call it the 'clomp!' it will unexpectedly rock forward creating a very unsafe feeling. then the following month, the 'clomping' presented itself again so my wife returned the vehicle to the dealership to demonstrate. A few weeks later, the car began making a loud turbine noise, and the rocking forward after coming to a stop re-presented itself again so we returned the car to service. Then the following month the car continued to randomly lunge forward after coming to a stop, my wife called the service center and they picked it up and provided her with a loaner which we've been driving ever since (june 15TH). at this point we have lost all faith in the safety of the vehicle and have requested a full refund. I was referred to mbusa, but they had me on hold for over 30 minutes before I had to hang up. I then insisted that the dealership initiate a refund with mb USA. We were told that it would take 3-4 weeks to hear a reply, however surprisingly within just one week we received a disappointing notice from mbusa that our request was rejected. after not hearing any further response for awhile, on saturday the 5TH of sept my wife and I returned to mb escondido to try to get some answers, and hoped to at least uncover any options that could possibly be settled directly through the dealership. My wife and I agreed to take the car on a test drive with a service technician to see if the problems were actually resolved, and during the test drive confirmed that they hadn't. during the drive we effectively recreated the 'transmission clomping' and random lunge forward after coming to a stop and then returned to the dealership with the car making a overly loud fan noise, similar to the loud turbine noise previously heard before having the compressor replaced. I have a video I can email
- Electrical system · Engine · Vehicle speed control
I was cruising down a pretty busy main street. as I was trying to manuever in traffic, I sensed that as I was pressing on the gas, the car was unresponsive. I looked at the dash and noticed the car had moved itself into neutral. I tried to turn the key, but nothing happened. the car was…
I was cruising down a pretty busy main street. as I was trying to manuever in traffic, I sensed that as I was pressing on the gas, the car was unresponsive. I looked at the dash and noticed the car had moved itself into neutral. I tried to turn the key, but nothing happened. the car was unresponsive, but still on (from the look of the dashboard). I quickly tried to coast to the side of the road, in between speeding traffic, which was very dangerous, as I was near the highway onramp area. once I safely pulled aside, I tried to again turn the car on using the key. again the car was unresponsive. I turned the key to the off position and pulled the key out. when in the off position, all the lights on the dash lit up. I pulled the key out and reinserted it and turned the key and the car came back on and began to drive normally.
- Electrical system
TL* the contact owns a 2014 mercedes benz b-class electric. While driving 35 mph, the vehicle lost all power without warning. The contact was able to steer the vehicle into a parking lot. The vehicle was towed to the dealer, but the cause of the failure was not determined. The vehicle was repaired. The manufacturer was not made aware of the failure. The failure mileage was 3,827.
- Power train
While driving, on any road and any speed, the vehicle goes into neutral and the stop switch engine off indicator appears. this requires me to pull over to the side of the road, place the vehicle in park and turn off the ignition. I remove the key, replace it, and then attempt to start the vehicle…
While driving, on any road and any speed, the vehicle goes into neutral and the stop switch engine off indicator appears. this requires me to pull over to the side of the road, place the vehicle in park and turn off the ignition. I remove the key, replace it, and then attempt to start the vehicle again. it may start immediately, or it may take several times turning the key from the on to off to on position before it works again. at times, when it does start, and I put it into reverse or drive from park it may stall again. eventually, I am able to place the vehicle into drive and resume my journey. the malfunction visit workshop display appears soon after and remains. took to service and they updated 3 software programs nevertheless, the three software updates did nothing to remedy the serious problem. on july 4, 2015 (just 2 days after the vehicle was given back to me by the service department my family (my wife and my two girls ages 11 and 9) and I were driving. as I was driving on the highway, going at approximately 50 mph, the vehicle stalled. there was no shoulder or break down lane to pull over to. it was a very frightening and dangerous experience. While we stood still, as I tried to get the vehicle started (more than 6 times), other cars came very close to striking us at 50 mph. there was an obvious danger for morbidity and mortality. while on that busy highway, I had to go through the steps of turning the vehicle off and on again multiple times before it was able to be driven. It then stalled approximately another 13 times. fortunately, I was able to bring it home by driving carefully on side streets with my hazards on.
Defect investigations
NHTSA’s Office of Defects Investigation opened these reviews into vehicles including this one.
- Pedestrian alert sounds
NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for…
NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021.On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject matter described in the petition. On June 24, 2023 and as supplemented on June 25, 2023, the petitioner notified NHTSA he was withdrawing his petition. The petitioner indicated that, based on his review of data, there is no justification for asserting potential benefits that could be derived from actions sought by my petition. Based on the petitioner's withdrawal, DP22-005 is closed. Closure of this DP does not represent a determination by NHTSA regarding the subject matter of the petition.
- 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.
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.
- 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.
- 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
- 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).
- 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!
- 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.
- 10205225Headlamps fogged.
- 10205143Clacking noises from the front axle area.
- 10167577Since 12/2012 (model 166) and since 06/2013 (model 242) the glass breakage loops are no longer in the side windows and rear window. Suitable interior protection ensures that the interior monitoring function continues to operate correctly.
- 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).
- 10167551Vehicle wanders to the left or right.
- 10167550Single, throttle lift-off, clunking noise from the side shaft when starting off (audible at the wheel). The clunk is heard once when changing from forward to reverse (and vice versa).
- 10167529White stains occur on the Dinamica covers in the areas of the cushion cover and backrest cover.
- 10167525Apple products (iPhone or iPod) are not charged via the serial USB interface of the COMAND Online control unit (A40/3) in the stowage compartment of the center console.
- 10167517The center stowage compartment does on close or open smoothly.
- 10167512ESP, BAS, PRE-SAFE, HOLD function, Hill-Start Assist and ESP trailer stabilization are unavailable due to a malfunction. Also the adaptive brake lights, Adaptive Brake Assist and/or ATTENTION ASSIST may have failed or be deactivated. The brake system continues to operate with normal effectiveness. The support functions listed may have failed, but are available again after an ignition off/on cycle. One or more of the faults relating to the accelerator pedal (B37) listed under 'Control unit / Fault code' are stored in the engine control unit. Consequential faults may be stored in the ESP; see also under 'Control unit / Fault code'.
- 10167511Engine diagnosis warning lamp is active. One or more of the faults listed under 'Control unit / Fault code' relating to the throttle valve actuator (M16/6) and/or oxygen sensor (G3/1 and/or G3/2) are stored in the engine control unit.
- 10167510The vehicle cannot be started The vehicle may start by itself shortly after the startup attempt with a delay, as the relay can be late closing. and/or The gear selection is displayed, but no gear is engaged. Gear selection is not possible. and/or Rear window wiper inoperative. and/or Various fault codes concerning disrupted communication paths are stored and/or the corresponding control units are not displayed in the quick test. Affected control units include the transmission control unit, electronic ignition lock, driver SAM, engine control unit, Lane Keeping Assist, Distronic.
- 10167497Transmission intermittently fails to shift, vehicle jolts in higher gears. The dual clutch transmission (DKG) control unit contains the stored FC 92177 or FC 92100 ("The shift valve of the internal shaft has a malfunction. The commanded position cannot be reached"). In the extended fault freeze frame data it can be seen that this fault was set in 7th gear - see Figure 1 in attachment.
- 10167015The key is not recognized in the electronic ignition switch, the vehicle cannot be started and/or the automatic transmission may perform an "Automatic P function" at speeds below 6 km/h.
- 10166986Reverse gear cannot be engaged. The following fault code is stored in the dual clutch transmission (DKG) control unit: FC 074600 -> Pressure regulating valve 1 does not close or FC 077600 -> Pressure regulating valve 1 does not close In the extended fault freeze frame data it can be seen that both clutches are pressurized when the fault code 074600 or 077600 occurs - see Figure 1 in attachment.
- 10162197"High-voltage battery warning message" in instrument cluster
- 101519437G-DCT: Scratching noise when changing gear from D to R when transmission cold.
- 10136077Update Powertrain and Gateway Control Module Software
- 10135835Range of electric vehicles
- 10135439Audio/COMAND display: Sporadic failures of central display
Every Mercedes Benz B-Class Electric model year
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