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.
The worst 2014 Mercedes Benz B-Class Electric problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Transmission10
- Electrical7
- Engine7
- Brakes3
- Fuel system3
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Transmission10
- Electrical7
- Engine7
- Brakes3
- Fuel system3
- Acceleration1
- Visibility1
Recalls 2
Communication
- What is wrong
- 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
- 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.
Recall number 19V787000 · Recall details
Electrical system: propulsion system: traction battery
- What is wrong
- 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
- 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.
Recall number 15V655000 · Recall details
See all 2 recalls for the 2014 Mercedes Benz B-Class Electric
Defect investigations
Pedestrian alert sounds
the federal safety agency 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 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, the federal safety agency 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 the federal safety agency 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 the federal safety agency regarding the subject matter of the petition.
DP22005
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 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 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 -- note this information is subject to change/revision as the investigation proceeds). This investigation does not supersede EA15-001, which remains open.
EA21002
Technical service bulletins for the 2014 Mercedes Benz B-Class Electric 31
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Headlamp, front fog lamp leaky or fogged
- Headlamps leaking or fogged
- During a phone call, the called party has difficulty understanding/cannot understand the driver, or...
- Washer fluid system leaks
- Headlamp or front fog lamp leaky or fogged
- Rear lamps fogged up/not leaktight
- Crease formation on genuine leather seat covers in vehicles with low mileage ⢠Objects left on the seats...
- The Mercedes me connect services cannot be activated
- High-voltage battery warning message" in instrument cluster
- 7G-DCT
See all 31 bulletins for the 2014 Mercedes Benz B-Class Electric
What 2014 Mercedes Benz B-Class Electric owners say
Most recent owner complaints, unedited.
Coolant leak causing catastrophic drive unit failure.
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.
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!
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 the federal safety agency 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.
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.
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 the federal safety agency 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.
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.
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 federal safety agency 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).
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.
Compare the 2014 Mercedes Benz B-Class Electric
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Questions about the 2014 Mercedes Benz B-Class Electric
Is the 2014 Mercedes Benz B-Class Electric reliable?
Owners have filed 20 complaints about the 2014 Mercedes Benz B-Class Electric, close to a typical B-Class Electric model year.
What is the 2014 Mercedes Benz B-Class Electric year score?
The 2014 Mercedes Benz B-Class Electric scores 75 out of 100 (average). The score compares it with the other model years of the Mercedes Benz B-Class Electric: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2014 Mercedes Benz B-Class Electric?
Transmission and drivetrain, with 10 complaints, typically around 43,276 miles. Next is electrical (7).
How many recalls does the 2014 Mercedes Benz B-Class Electric have?
2 recalls, covering communication and electrical system.
What year does the Mercedes Benz B-Class Electric have bad transmission?
The Mercedes Benz B-Class Electric model years with the most transmission complaints are 2015 (14 complaints) and 2014 (10 complaints).
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