2015 Mercedes Benz B-Class Electric
Safety record from NHTSA: recalls, owner complaints, investigations and service bulletins.
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These records cover every 2015 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 2015 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
25 complaints
What owners report most
Latest complaints
- Power train · Steering · Unknown or other
MERCEDES DEALER NOTES : 07/19/2022 CLIENT STATES STEERING IS STIFF. STARTED ABOUT 1 TO 2 MONTHS AGO AND WOULD SHOW UP ONCE AND AWHILE. WHEN IT WOULD ACT UP WOULD NOT DRIVE IT AND IT WOULD LOCK THE STEERING . THIS HAPPENED MULTIPLE TIMES, WITH ACCIDENT HAZARD. WE DID THE BELOW WORK. ELECTRIC POWER…
MERCEDES DEALER NOTES : 07/19/2022 CLIENT STATES STEERING IS STIFF. STARTED ABOUT 1 TO 2 MONTHS AGO AND WOULD SHOW UP ONCE AND AWHILE. WHEN IT WOULD ACT UP WOULD NOT DRIVE IT AND IT WOULD LOCK THE STEERING . THIS HAPPENED MULTIPLE TIMES, WITH ACCIDENT HAZARD. WE DID THE BELOW WORK. ELECTRIC POWER STEERING RACK FAULTY REPLACE COMPLETE ELECTRIC POWER STEERING RACK. WHICH COST US OVER $3000. NOW WE HAVE SIMILIAR PROBLEM STEERING IS TIGHT AGAIN, MAKING FLAPPING NOISE, DEALER RECOMMENDED REPLACEMENT OF POWER STEERING RACK, GEAR BOX 07/02/24 , MERCEDES HAS RECALL ON MANY MODELS DURING YEAR 2015-2018 FOR electric power steering systems, Mercedes says the cars use electric power steering systems that May have soldered contacts that weren't soldered correctly inside the control units. The bad contacts can cause a sudden loss of power steering while driving, causing serious problems if driving around a curve or at slow speeds.
- Electrical system · Fuel/propulsion system
The electric motor was leaking coolant and needs to be replaced. I have read countless accounts that this is a known issue with this car.
- Power train
Occasionally the car will lurch forward when coming to a stop. As you come to a stop it tries to propel the car forward as you are breaking and coming to a stop. Happens rarely but when it does it's a big safety concern.
- Engine · Unknown or other
Failure of seals and or bearings in the electric motor causing coolant to leak into the electric motor, creating an internal electrical fault, seizing electric motor.
- Power train
Vehicle stopped suddenly and would not restart. Needs a new $17k drive unit and is out of warranty. Drive unit failed due to faulty design where coolant contaminated the electric motor. Vehicle only has 40k miles. The drive unit was built by Tesla for Mercedes. Tesla also built the same unit for…
Vehicle stopped suddenly and would not restart. Needs a new $17k drive unit and is out of warranty. Drive unit failed due to faulty design where coolant contaminated the electric motor. Vehicle only has 40k miles. The drive unit was built by Tesla for Mercedes. Tesla also built the same unit for Toyota for the electric Rav4. Toyota recalled their units free of charge for customers. Mercedes is aware of this issue and refuses to extend the warranty or recall the roughly 4000 B250E cars that they sold in the USA from 2014-2017.
- Electrical system · Engine · Fuel/propulsion system
The main electric drive motor will start leaking coolant which then damages the motor and even electronics. Well known issue and makes the vehicle unsafe and isn't a matter of "if" but "when" the seals will go bad and this is on our car that has less than 40k miles on the odometer.
- Engine
The car started to make a soft ticking sound. I bought the car at 11121 mile on july 2,2018 last week I had the mercedes benz dealer pick. the problem was the engine needs to be replaced. mileage on car now IS 28452. asking 17,000 dollars for repair. I have the premium safe drive extended warranty they are will to pay only 10,000 dollars. *tr
- Electrical system · Engine · Power train
This mb model has an electric motor that fails at around 35000 to 40000 miles, and makes the vehicle to stop suddenly causing serious risks to the driver if this happens in any main highway. two weeks ago my wife was driving northbound at the fast lane of the palmetto expressway , in miami fl…
This mb model has an electric motor that fails at around 35000 to 40000 miles, and makes the vehicle to stop suddenly causing serious risks to the driver if this happens in any main highway. two weeks ago my wife was driving northbound at the fast lane of the palmetto expressway , in miami fl, when the car stopped giving no time to avoid coming traffic. Fortunately one fdot ranger was driving same way and protect my wife turning on its emergency lights while they wait for a tow truck to arrive. this model of mb IS assembled with a tesla motor that has been proven to fail, but tesla has taken fast action to avoid inconveniences to its customers. mb has doing nothing to advice its customers on this critical issue, putting on risk on a daily basis all drivers that ride tis mb model. I figure if others are facing similar issues, it would be good to get a recall set up if mb does not step up to the plate. It took four years for these issues to show up near the end of my warranty, and since the cars remain essentially the same through the 2017 models, we may expect to see others model years show the same issues as the end of their warranties come up. I hope not, for everyone else but best be prepared. my vehicle can been inspected at the mercedes benz of miami dealer where repair are underway.
- Power train
Car stalled while going on expressway at 30 mph. Complete loss of power. Had to pull over and power off the car. Restart of the car after a while and everything was back to normal.
- Electrical system
Car was stopped and the engine turned itself off. restarted manually. took the car to the dealer for reprogramming. did the same thing again.
- Power train
While the car was in motion, the engine has switches off and the car goes in neutral. This has happened already 3 times (approximately once per month). It has happened while on the interstate, while driving on a small road, and while approaching a stop sign. The car can be restarted normally. We…
While the car was in motion, the engine has switches off and the car goes in neutral. This has happened already 3 times (approximately once per month). It has happened while on the interstate, while driving on a small road, and while approaching a stop sign. The car can be restarted normally. We have had the car at the mercedes dealer in september 2015, and the tried to fix the problem by installing the latest software. However, it just happened again. This car IS not safe to drive the last time the car stalled while driving, we let the car come to a complete stop, without touching anything but the break, and make a picture of the instrument panel. This picture IS attached to the report to document the incidence.
- Engine · Fuel/propulsion system · Power train
My b-class electric had a sudden loss of power. Here's the details: left the house in san diego at 7:00 am. outside temperature about 75+degrees. about 1 mile from the start, I braked slightly to maintain speed of about 25 mph, coasted towards and uphill, put my foot on the accelerator to…
My b-class electric had a sudden loss of power. Here's the details: left the house in san diego at 7:00 am. outside temperature about 75+degrees. about 1 mile from the start, I braked slightly to maintain speed of about 25 mph, coasted towards and uphill, put my foot on the accelerator to maintain speed and there was no power-just coasting. There was no unusual sound and no warning displayed. The car appeared normal except the guage was showing full regenerative braking while the car was coasting. Transmission was in d-auto. Power steering worked, ac and radio were still on. I brought it to a stop. Pushed the button to turn it off. At that time all the lights on the dash lit up. I pushed it again and the car was back to normal with the indicator showing zero between regeneration and discharge. I finished the drive without further incident. mileage: 1620 miles purchased: june 2015 mfg date: 4/15 took the car to the dealer two hours later and told them about the problem and that the forum says there IS a code update available. Waited there for 3 hours. Their paper work says: 1639 541011, 540991, 540992. Programmed power train control unit. Performed short test; no relevant fault codes. Checked power train control unit for software updates. Update was available. Programmed and coded power train control unit. Complete.
- Engine
3XS I have had the car stop working while driving. all three occasions while coming to a quick stop the car quit working. I had to come to a complete stop, put the car in park and restart the vehicle. I leased the car in july/august 2015, last incident was on 9/22.
- Electrical system · Engine · Power train
On 10-5-15, my 2015 mercedes b class with 3300 miles decided to lose all power in the middle of 101 in rush hour traffic. luckily traffic was moving at 15mph, I had to completely stop the car in the middle lane. put the car in park, shut it off and restart to regain power. there were no check…
On 10-5-15, my 2015 mercedes b class with 3300 miles decided to lose all power in the middle of 101 in rush hour traffic. luckily traffic was moving at 15mph, I had to completely stop the car in the middle lane. put the car in park, shut it off and restart to regain power. there were no check engine light or signs that the car was broken, I just simply lost all drive power even though I was in d. it was scary as I was on the 101 at about 4PM. this also happened at another when I first got the car, please get mercedes to fix this before I get rear-ended and crushed.
- Fuel/propulsion system · Power train · Vehicle speed control
Driving on the freeway at 65mph, experienced complete and sudden loss of drive/power. Car charge was around 1/2 full. Had to pull to the shoulder as the car rolled to a complete stop. finding lots of other reports online, dealer has been unable to determine the root cause after 1 week. Dealer reported other similar incidents from other drivers.
- Vehicle speed control
Unexpected loss of power - we have experienced total loss of acceleration and throttle power resulting in the vehicle rolling/drifting to a stop. in order to regain throttle power, the car must be placed in park and the engine start button depressed. this loss of power has occurred to me at least…
Unexpected loss of power - we have experienced total loss of acceleration and throttle power resulting in the vehicle rolling/drifting to a stop. in order to regain throttle power, the car must be placed in park and the engine start button depressed. this loss of power has occurred to me at least 3 times at low speeds (10-25 mph), once at 45 mph and once at 65 mph while driving in the far left lane of 73 south toll road, california. also important IS that at the time forward power IS lost, the regeneration gauge on the far right of the dashboard moves immediately to maximum indication and all warning lights become illuminated. during the first dealer service on july 24, 2015 the dealer found code message u029887, u016883 and u029287 missing. dealer performed a software update and updated ptcu drivetrain N127 module. the dealer has replaced the ptcu drivetrain N127 twice - once on service dated july 29, 2015 and again on service dated august 28, 2015. on service dated july 29, 2015 dealer replaced drivetrain gateway module N93/8. found code c10c800 not related. on service dated august 28, 2015 dealer retrieved all data from ptcu drivetrain module N127. owner has videotaped the loss of power occurring and provided it to dealer. owner's children are frightened to drive in the vehicle. teenage daughter was very frightened driving at 65 mph when she experienced unexpected total loss of power and had to drift into the the left shoulder of a busy freeway and restart the car after coming to a stop. mercedes and tesla - you have a lemon!
- Fuel/propulsion system · Power train
I was driving on the 91 freeway in anaheim ca when my brand new (approximately 1000 miles on the odometer) 2015 mb all electric automobile began to decelerate. My foot was on the accelerator as I lost all power to the engine. The battery was fully charged. The radio and all of the electronic…
I was driving on the 91 freeway in anaheim ca when my brand new (approximately 1000 miles on the odometer) 2015 mb all electric automobile began to decelerate. My foot was on the accelerator as I lost all power to the engine. The battery was fully charged. The radio and all of the electronic interior features were intact. I was in the 3RD lane of traffic (out of 5). Luckily the traffic was light as I pulled over to the side of the freeway and the car came to a complete stop. I was quite unnerved by the incident but the car started up and I continued my commute to work uneventfully. I took my vehicle to the mercedes dealership and they evaluated the car. They could not replicate the event and could not find an anomaly in the on board computers. I presented testimony from this very website disclosing 7 other recent similar events in this model car. I advised the dealership that I was not taking possession of the auto unless something was done. They presented the information to mercedes benz/tesla technical support. The gateway powertrain control unit was replaced. I expressed my concern to the mb dealership that this maybe a systemic problem, given the number of complaints in such a short period of time. The dealership representative expressed sympathy with my situation but declared that this IS something we should take up with daimler-benz. The dealership IS a separate entity which only buys/sells and provides maintenance for mb automobiles. I expressed that this defect has me concerned every time I enter a freeway. The service manager could not reassure me that this will not happen again. I hope it does not take fatalities before there IS a recall.
- Fuel/propulsion system
There has been two incident, in which I am driving the car and the accelerator does not respond, requiring me to make an emergency lane change to get off the road, these situation have been very frightening and I fear for my life driving such a car. the first situation occurred august 2015…
There has been two incident, in which I am driving the car and the accelerator does not respond, requiring me to make an emergency lane change to get off the road, these situation have been very frightening and I fear for my life driving such a car. the first situation occurred august 2015 , while traveling on a high way at 65mph. The car stop accelerated and I luckly made an emergency lane change without harm myself, family car or anyone else. I immediately contacted sos on my car and was told the car was safe to drive, after I restarted it. I took my car in for a repair, they did a software update an promised it wont happen again. Occurred at 1500 miles, roughly 2 month after purchasing the car. 1500 miles later, about 7 weeks, it happens again. This time on a small road, I also have video of the, car where I am not able to put the car into drive and it IS stuck in neutral but can go into reverse/drive. The regeneration was at 100% and all warning light on, same thing as first time. Note I still have the video took the car in, demanded the car be repaired. Did some research determine other car have the same problem. Even the RAV4 EV had a similar problem, commonality between the b-class and RAV4 IS the tesla battery and drive train. I believe this has happen to other peoples and this IS disaster waiting to happen, this car should be recalled for all owners and repaired
- Fuel/propulsion system · Vehicle speed control
I was driving at 55 mph on the freeway with both hands on the wheel when all of a sudden I lost power to the accelerator pedal. No mechanical problem was indicated on the dash: the car was 'ready' and was in 'd' yet I had no power whatsoever to the accelerator pedal. I could not pull over to get…
I was driving at 55 mph on the freeway with both hands on the wheel when all of a sudden I lost power to the accelerator pedal. No mechanical problem was indicated on the dash: the car was 'ready' and was in 'd' yet I had no power whatsoever to the accelerator pedal. I could not pull over to get out of trouble because I was surrounded by fast moving traffic and had no power. I could not brake to try to restart the car without being rear ended by the considerable traffic behind me on the freeway. My only option was to continue to coast from my initial speed with the hazard lights on even though I was at high risk of being struck by another driver. once stopped in the fast lane of the freeway, it took 2 or 3 attempts at switching the power on and off before the car was able to move again. the failure symptoms appear similar to the RAV4 EV that has the same power components supplied by tesla, and since march/april 2015 IS the subject of a recall notice for this power loss issue. we purchased this new vehicle from an authorized mercedes dealer on june 30, 2015, there was no disclosure of this issue. the mercedes electric vehicle failure put me and my passenger in a potentially fatal situation.
- Fuel/propulsion system · Power train · Vehicle speed control
Sudden loss of power while driving on a highway at 65-70mph. no indication of any problem on dash board, except an indication that it was at maximum regeneration. gear selection indicator displayed that the car was in drive, not in neutral. no response from throttle pedal pressing. slowly…
Sudden loss of power while driving on a highway at 65-70mph. no indication of any problem on dash board, except an indication that it was at maximum regeneration. gear selection indicator displayed that the car was in drive, not in neutral. no response from throttle pedal pressing. slowly drifted across multiple lanes of highway until I reached the shoulder and came to a stop. turned car off and then back on, after which the car behaved normally again.
- Power train
TL* the contact owns a 2015 mercedes benz b-class electric. 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 4,500. The vin was not available.
- Fuel/propulsion system
While driving 35 mph on timed light rush hour traffic road, car lost acceleration capability. instrumentation panel displayed normally. car did not respond to switch to sport mode in attempt to get more response. did not stall completely but no acceleration possible. normal after turned off and re-start.
- Fuel/propulsion system
My 2015 mercedes benz b class electric drive lost power during my evening commute today leaving me stalled in traffic. I was not able to make it across all 5 lanes of a busy freeway to the shoulder before coming to a complete stop halfway between two lanes (one of which was a busy merge lane from…
My 2015 mercedes benz b class electric drive lost power during my evening commute today leaving me stalled in traffic. I was not able to make it across all 5 lanes of a busy freeway to the shoulder before coming to a complete stop halfway between two lanes (one of which was a busy merge lane from sfo airport). I tried to restart it (keyless) a couple of times without success- no messages on dash, rest of electronics (radio etc) still working fine. I did notice that the gauge dropped down to full "charging" as if the regenerative system were fully engaged but not all the way to off which seemed odd. I hit the sos/assistance button to ask them to send chp since I was blocking traffic and genuinely feared for my safety. While on the phone with them some guys stopped and tried to push me to the shoulder since I was only 3/4 of a lane away but the car would not move at all. Shortly after they gave up, I randomly tried to start the car again and it did start. I was able to pull to the shoulder and call off chp. After collecting my nerves a bit I headed for the next off ramp and made it the rest of the way home on surface streets without incident. I will be taking the car to the dealer in the morning.
- Power train · Steering · Vehicle speed control
Thump! Complete loss of power on freeway. Random shift to neutral issue. driving home from the purchasing the car on the 101 southbound in the fast lane going 65 mph. Acceleration was suddenly lost. The power train malfunctioned and shifted itself into neutral. The gas pedal was unresponsive. Had…
Thump! Complete loss of power on freeway. Random shift to neutral issue. driving home from the purchasing the car on the 101 southbound in the fast lane going 65 mph. Acceleration was suddenly lost. The power train malfunctioned and shifted itself into neutral. The gas pedal was unresponsive. Had to pull over at woodman exit on inertia alone. We had just purchased the car only 2 hours prior to this incident and put 30 miles on the odometer. No warning lights appeared. My research on this issue shows that it IS that same issue that has caused the RAV4 EV recall. This issue IS extremely dangerous and IS affecting many other b-class owners.
- Power train · Vehicle speed control
This incident has happened twice since we got the car on 06/25/2015. First time, driving down a street at 35 mph and the car will shift by itself into neutral. The car will not go back to drive and there IS not power to the drive system. The only way to correct it IS to coast to a stop and turn off…
This incident has happened twice since we got the car on 06/25/2015. First time, driving down a street at 35 mph and the car will shift by itself into neutral. The car will not go back to drive and there IS not power to the drive system. The only way to correct it IS to coast to a stop and turn off the car and restart it to continue driving. The second time, on 7/10/2015 my wife was driving on the freeway at 55mph and same thing happened again, but was put in a more dangerous situation since she was traveling in the left lane and there was no center median. It has been at the dealership ever since. They stated that the powertrain control unit needs to be replaced, but have not time estimate on when they will be getting the part. They are not even sure if this will correct the issue. *tr
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.
- 10206077"MY15+ M278 and M157 Equipped Vehicles with Fault Code ""P023400 Boost Pressure is Too High"" "
- 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
- 10158365Reversing camera nonfunctional on vehicles with code 805 YoM 14/1 (MY15)
- 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
- 10059782Summary to be provided on a future date.
Every Mercedes Benz B-Class Electric model year
Bars are owner complaints, dots mark years with recalls. Select a year to open its report.