Mercedes-Benz B-Class recalls

52 official safety recalls for the Mercedes-Benz B-Class from NHTSA (United States), DVSA (United Kingdom) and the EU Safety Gate, newest first. Recall repairs are normally free at the maker’s dealers.

Whether your car is affected and still needs the repair depends on its VIN or registration. Check it on the official site for your country:

United States: nhtsa.gov/recalls
United Kingdom: check-vehicle-recalls.service.gov.uk

Steering software backup may fail
Reported May 6, 2024Model years 2018–2024DVSA recall R/2024/166314,515 vehicles affected
The steering software backup function may not meet specifications, impairing power assistance and potentially causing loss of steerability. The electric steering software will be updated.
Official DVSA recall text
Component
SRPC2404 â Backup function of steering software
Defect
On affected vehicles the backup function of the steering software might not meet specifications. As a result the steering power support might be impaired and a loss of steerability cannot be ruled out.
Remedy
Update the software of the electric steering on the affected vehicles.
Engine control software may not meet local requirements
Reported March 13, 2023Model years 2015–2017DVSA recall R/2023/0625,186 vehicles affected
The engine control unit software may deviate from local legal requirements. Update the diesel engine control unit software.
Official DVSA recall text
Component
Affected vehicles have an engine control unit software that deviates from the local legal requirements
Defect
Affected vehicles have an engine control unit software that deviates from the local legal requirements.ï¿½
Remedy
Update the diesel engine control unit software.
Diesel engine control unit software needs an update
Reported December 13, 2021Model years 2012–2013DVSA recall R/2021/40262,828 vehicles affected
Changes are required to specific engine management calibration functions. The diesel engine control unit software will be updated to improve emissions.
Official DVSA recall text
Component
UPDATE TO THE DIESEL ENGINE CONTROL UNIT SOFTWARE TO IMPROVE THE EMISSIONS
Defect
As a result of a directive from Germanyï¿½s Federal Motor Transport Authority (KBA) changes are required to certain specific calibration functions within the engine management systems of certain vehicles.
Remedy
Conduct an update to the diesel engine control unit software.
Engine management calibration needs updating
Reported December 13, 2021Model years 2010–2012DVSA recall R/2021/39912,028 vehicles affected
Changes are required to specific engine management calibration functions. The diesel engine control unit software will be updated.
Official DVSA recall text
Component
UPDATE TO IMPROVE EMISSIONS
Defect
As a result of a directive from Germanyï¿½s Federal Motor Transport Authority (KBA) changes are required to certain specific calibration functions within the engine management systems of certain vehicles.
Remedy
Conduct an update to the diesel engine control unit software.
Emergency call system may not meet specifications
Reported November 29, 2021Model years 2016–2021DVSA recall R/2021/3761,259,750 vehicles affected
The emergency call system may not behave as specified. The communication module software will be updated.
Official DVSA recall text
Component
THE BEHAVIOUR OF THE EMERGENCY CALL SYSTEM MIGHT NOT MEET SPECIFICATIONS
Defect
The behaviour of the emergency call system might not meet specifications.
Remedy
Update the software of the communication module for the emergency call system.
Steering shaft universal joint bore may be out of specification
Reported July 21, 2021Model years 2016–2017DVSA recall R/2021/20268,535 vehicles affected
A bore in the steering shaft universal joint may not meet specifications. The steering shaft will be checked and replaced if necessary.
Official DVSA recall text
Component
A BORE IN THE UNIVERSAL JOINT ON THE STEERING SHAFT MIGHT NOT MEET SPECIFICATIONS
Defect
A bore in the universal joint on the steering shaft might not meet specifications.
Remedy
Check the steering shaft on the affected vehicles and replace it if necessary.
Emergency call system may not behave as specified
Reported May 13, 2021Model years 2016–2021DVSA recall R/2021/1102,506,333 vehicles affected
The emergency call system may not behave as specified. The communication module software will be updated.
Official DVSA recall text
Component
THE BEHAVIOUR OF THE EMERGENCY CALL SYSTEM MIGHT NOT MEET SPECIFICATIONS
Defect
The behaviour of the emergency call system might not meet specifications.
Remedy
Update the software of the communication module for the emergency call system.
Emergency call system may not work as specified
Reported May 11, 2021Model years 2016–2021DVSA recall R/2021/1202,078,496 vehicles affected
The emergency call system may not behave as specified. The communication module software will be updated.
Official DVSA recall text
Component
THE BEHAVIOUR OF THE EMERGENCY CALL SYSTEM MIGHT NOT MEET SPECIFICATIONS
Defect
The behaviour of the emergency call system might not meet specifications.
Remedy
Update the software of the communication module for the emergency call system.
Emergency call system may not meet specifications
Reported May 10, 2021Model years 2016–2021DVSA recall R/2021/1112,267,900 vehicles affected
The emergency call system may not behave as specified. The remedy is to update the communication module software.
Official DVSA recall text
Component
THE BEHAVIOUR OF THE EMERGENCY CALL SYSTEM MIGHT NOT MEET SPECIFICATIONS
Defect
The behaviour of the emergency call system might not meet specifications.
Remedy
Update the software of the communication module for the emergency call system.
Emergency call system may not meet specifications
Reported May 5, 2021Model years 2016–2021DVSA recall R/2021/1344,064,525 vehicles affected
The emergency call system may not behave as specified. The communication module software will be updated.
Official DVSA recall text
Component
THE BEHAVIOUR OF THE EMERGENCY CALL SYSTEM MIGHT NOT MEET SPECIFICATIONS
Defect
The behaviour of the emergency call system might not meet specifications.
Remedy
Update the software of the communication module for the emergency call system.
Emergency call system may not work to specification
Reported May 5, 2021Model years 2016–2021DVSA recall R/2021/1332,666,625 vehicles affected
The emergency call system may not behave as intended. Update the communication module software.
Official DVSA recall text
Component
THE EMERGENCY CALL SYSTEM MIGHT NOT MEET SPECIFICATIONS
Defect
The behaviour of the emergency call system might not meet specifications.
Remedy
Update the software of the communication module for the emergency call system.
Emergency call system may not behave as specified
Reported May 5, 2021Model years 2016–2021DVSA recall R/2021/132260,250 vehicles affected
The emergency call system may not behave as specified. The communication module software will be updated.
Official DVSA recall text
Component
THE BEHAVIOUR OF THE EMERGENCY CALL SYSTEM MIGHT NOT MEET SPECIFICATIONS
Defect
The behaviour of the emergency call system might not meet specifications.
Remedy
Update the software of the communication module for the emergency call system.
Emergency call system may not meet specifications
Reported May 5, 2021Model years 2016–2021DVSA recall R/2021/1312,031,675 vehicles affected
The emergency call system may not behave as specified. The communication module software will be updated.
Official DVSA recall text
Component
THE BEHAVIOUR OF THE EMERGENCY CALL SYSTEM MIGHT NOT MEET SPECIFICATIONS
Defect
The behaviour of the emergency call system might not meet specifications.
Remedy
Update the software of the communication module for the emergency call system.
Steering shaft bearing may separate from universal joint
Reported April 1, 2021Model years 2017NHTSA campaign 21V2290004,992 vehicles affected
Excessive movement in the steering shaft bore may cause the universal joint bearing to separate, resulting in loss of steering control and increasing the risk of a crash. Dealers will inspect and, as necessary, replace the steering shaft free of charge.
Official NHTSA recall text
Component
STEERING:GEAR BOX:SHAFT SECTOR
Defect
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017 B250e, CLA250, 2017-2018 AMG CLA45, GLA250, and AMG GLA45 vehicles. The steering shaft bore hole for the universal joint bearing may allow excessive movement that, over time, could result in the separation of the bearing and universal joint.
Consequence
A separated universal joint bearing can cause a loss of steering control and increase the risk of a crash.
Remedy
MBUSA will notify owners, and dealers will inspect, and as necessary, replace the steering shaft, free of charge. Owner notification letters were mailed July 23, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2021060001.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Communication module may be deactivated
Reported March 30, 2021Model years 2016–2020DVSA recall R/2021/082264 vehicles affected
The communication module may be deactivated. Its configuration will be checked and the module activated if necessary.
Official DVSA recall text
Component
THE COMMUNICATION MODULE MAY BE DEACTIVATED
Defect
The communication module may be deactivated
Remedy
Carry out a check of the configuration of the communication module on affected vehicles and if necessary activate the communication module.
Emergency call system may send incorrect location
Reported February 5, 2021Model years 2017NHTSA campaign 21V0580001,292,258 vehicles affected
A communication module software issue may send an incorrect vehicle location during an emergency call after a crash, potentially dispatching responders to the wrong place and increasing injury risk. A dealer or over-the-air update will correct the software, free of charge.
Official NHTSA recall text
Component
COMMUNICATION: AUTO CRASH NOTIFICATION
Defect
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 - 2021 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, GT-Class, C-Class, E-Class, S-Class, CLS-Class, SL-Class, B-Class, GLB-Class, GLC-Class, and G-Class vehicles. Please refer to the Part 573 report for specific vehicle model details. The software design of the communication module may fail to communicate the correct vehicle location for the emergency call system (eCall) in the event of a crash.
Consequence
Failure of the eCall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.
Remedy
MBUSA will notify owners, and the communication module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. The recall began March 12, 2021. Owners may contact MBUSA customer service at 1-877-762-8267. MBUSA's number for this recall is 2021020025.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Engine control unit electrical contact may be faulty
Reported October 27, 2020Model years 2019–2020DVSA recall R/2020/277148 vehicles affected
An electrical contact inside the engine control unit may not meet specification. The engine control unit will be replaced.
Official DVSA recall text
Component
AN ELECTRICAL CONTACT INSIDE THE ENGINE CONTROL UNIT MAY NOT MEET THE SPECIFICATION
Defect
An electrical contacting inside the engine control unit might not meet the specification
Remedy
Replace the engine control unit on the affected vehicles
Turbocharger oil supply line may leak
Reported October 12, 2020Model years 2019–2020DVSA recall R/2020/2625,370 vehicles affected
The turbocharger oil supply line may leak. It will be checked and replaced if necessary.
Official DVSA recall text
Component
THE OIL SUPPLY LINE OF THE TURBOCHARGER MAY LEAK
Defect
The oil supply line of the turbocharger might leak
Remedy
Check the oil supply line of the turbocharger on the affected vehicles and replace it if necessary
Emergency call system software may not meet specifications
Reported October 6, 2020Model years 2017–2018DVSA recall R/2020/23640,651 vehicles affected
The communication module software for the emergency call system does not meet specifications. The software will be updated.
Official DVSA recall text
Component
THE EMERGENCY CALL SYSTEM (eCall) DOES NOT MEET THE SPECIFICATION
Defect
On affected vehicles the software of the communication module for the emergency call system does not meet the specification
Remedy
Update the software of the communication module for the emergency call system
Passenger seat occupant system may be miscalibrated
Reported July 21, 2020Model years 2015–2017DVSA recall R/2019/446225 vehicles affected
The passenger seat occupant classification system may not be calibrated to specification. The passenger seat cushion will be replaced.
Official DVSA recall text
Component
THE CALIBRATION OF THE OCCUPANT CLASSIFICATION SYSTEM FOR THE PASSENGER SEAT MAY NOT MEET THE SPECIFICATION
Defect
The calibration of the occupant classification system for the passenger seat might not meet the specification.
Remedy
Replace the passenger seat cushion
Air conditioning refrigerant does not meet legal requirements
Reported November 8, 2019Model years 2012–2013DVSA recall R/2019/3271,248 vehicles affected
The refrigerant in the air conditioning system does not meet legal requirements. The system will be adapted to use the new refrigerant.
Official DVSA recall text
Component
THE REFRIGERANT IN THE AIR CONDITIONING SYSTEM DOES NOT MEET LEGAL REQUIREMENTS
Defect
The refrigerant used in the air conditioning system does not meet legal requirements.
Remedy
The air conditioning system will be adapted for the usage of the new refrigerant.
Air conditioning refrigerant does not meet requirements
Reported November 7, 2019Model years 2012–2013DVSA recall R/2019/3544,221 vehicles affected
The refrigerant in the air conditioning system does not meet legal requirements. The system will be adapted to use the new refrigerant.
Official DVSA recall text
Component
THE REFRIGERANT USED IN THE AIR CONDITION SYSTEM DOES NOT MEET LEGAL REQUIREMENTS
Defect
The refrigerant used in the air conditioning system does not meet legal requirements.
Remedy
Adapt the air conditioning system for usage of the new refrigerant.
Air conditioning refrigerant may not meet requirements
Reported November 5, 2019Model years 2012–2013DVSA recall R/2019/348116 vehicles affected
The air conditioning refrigerant does not meet legal requirements. The system will be adapted to use the new refrigerant.
Official DVSA recall text
Component
THE REFRIGERANT USED IN THE AIR CONDITIONING SYSTEM MAY NOT MEET LEGAL REQUIREMENTS
Defect
The refrigerant used in the air conditioning system does not meet legal requirements
Remedy
The air conditioning system will be adapted for the usage of the new refrigerant.
Emergency call system may report an inaccurate location
Reported November 1, 2019Model years 2014–2016NHTSA campaign 19V78700024,226 vehicles affected
A software fault may cause the emergency call system's date and time to differ from the actual date and time, potentially giving an inaccurate vehicle location and delaying responders. Dealers will check the remote update or update the communication module software as needed, free of charge.
Official NHTSA recall text
Component
COMMUNICATION
Defect
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: https://static.nhtsa.gov/odi/rcl/2019/RMISC-19V787-4620.pdf
Consequence
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.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Radar control unit software may not meet specification
Reported September 18, 2019Model years 2017–2019DVSA recall R/2019/2692,940 vehicles affected
The radar control unit software may not meet specification. The radar sensor control unit software will be updated.
Official DVSA recall text
Component
THE SOFTWARE OF THE RADAR CONTROL UNIT MAY NOT MEET SPECIFICATION
Defect
; The software of the radar control unit might not meet the specification
Remedy
Update the software of the radar sensor control unit on the affected vehicles.
Air conditioning refrigerant does not meet requirements
Reported September 10, 2019Model years 2012–2013DVSA recall R/2019/22115,032 vehicles affected
The refrigerant in the air conditioning system does not meet legal requirements. The system will be adapted for use with R1234yf refrigerant.
Official DVSA recall text
Component
AIR CONDITION SYSTEM REFRIDGERANT DOES NOT MEET REQUIREMENTS
Defect
The refrigerant used in the air condition system does not meet legal requirements.
Remedy
The air conditioning system to be adapted for the usage of the new refrigerant (R1234yf).
Transmission may not shift into Drive or Reverse
Reported July 30, 2019Model years 2018–2019DVSA recall R/2019/2173,627 vehicles affected
Under certain circumstances, it may not be possible to shift into Drive or Reverse. The transmission control unit software will be updated.
Official DVSA recall text
Component
THE SOFTWARE OF THE TRANSMISSION CONTROL UNIT MIGHT NOT MEET SPECIFICATION.
Defect
Under certain circumstances it might not be possible to shift into Drive or Reverse mode.
Remedy
Update the transmission control unit software of the affected vehicles.
High beam may not switch off with the lever
Reported April 10, 2019Model years 2018–2019DVSA recall R/2019/1051,914 vehicles affected
The driver may temporarily be unable to deactivate the high beam using the lever. The software will be updated.
Official DVSA recall text
Component
THE DRIVER MIGHT TEMPORARILY NOT BE ABLE TO DEACTIVATE THE HIGH BEAM WITH THE HIGH BEAM LEVER.
Defect
The driver might temporarily not be able to deactivate the high beam with the high beam lever.
Remedy
The software is to be updated on affected vehicles.
Driver's airbag locknuts may be loose
Reported April 1, 2019Model years 2018DVSA recall R/2019/0976 vehicles affected
One or more locknuts securing the driver's airbag may not be tight enough. The driver's airbag will be replaced.
Official DVSA recall text
Component
THE LOCKNUTS SECURING THE AIRBAG MIGHT BE INSUFFICIENTLY TIGHTENED
Defect
One or more of the four locknuts securing the drivers airbag might be insufficiently tightened.
Remedy
Replace the driver airbag of affected vehicles.
Passenger seat occupant system may be incorrectly calibrated
Reported February 27, 2019Model years 2018DVSA recall R/2018/349326 vehicles affected
The front passenger occupant classification system may be incorrectly calibrated. The front passenger seat cushion will be replaced.
Official DVSA recall text
Component
THE CALIBRATION OF THE FRONT PASSENGER SEAT OCCUPANT CLASIFICATION SYSTEM MAY NOT CORRESPOND TO SPECIFICATIONS
Defect
Incorrect calibration of the front passenger occupant classification system.
Remedy
Replace the seat cushion of the front passenger seat.
Left side doors may remain locked
Reported November 19, 2018Model years 2017–2018DVSA recall R/2018/26820,120 vehicles affected
The left side doors may remain locked after remote locking or unlocking and may not open from inside or outside. The affected door locks will be replaced.
Official DVSA recall text
Component
DOORS ON LEFT VEHICLE SIDE (PASSENGER SIDE) REMAIN PERMANENTLY LOCKED AFTER THE VEHICLE HAS BEEN LOCKED/UNLOCKED WITH THE REMOTE CONTROL KEY
Defect
Possible inability to open the left hand door externally or internally.
Remedy
Replace the affected door locks on the left side of the vehicle.
Steering wiring fault may deploy the driver's airbag
Reported June 11, 2018Model years 2011–2017DVSA recall R/2018/130471,648 vehicles affected
The steering column clock spring may break, illuminating warning messages and, in extreme cases, causing the driver's airbag to deploy. The steering components will be grounded correctly.
Official DVSA recall text
Component
ELECTRICAL WIRING IN STEERING ASSEMBLY MAY BE INSUFFICIENTLY GROUNDED
Defect
The steering column clock spring may break. This will cause warning messages to illuminate in the instrument cluster but in extreme instances it may cause the driver's airbag to deploy.
Remedy
Affected vehicles will be recalled to establish sufficient grounding of the steering components
Steering components may be insufficiently grounded
Reported May 11, 2018Model years 2011–2017DVSA recall R/2018/098445,974 vehicles affected
Insufficient grounding may cause the steering column clock spring to fail and the driver airbag to deploy unintentionally, risking injury or a collision. A contact bridge will be fitted to provide correct grounding.
Official DVSA recall text
Component
STEERING COMPONENTS MAY BE INSUFFICIENTLY GROUNDED
Defect
It has been determined that the steering airbag electrical components are insufficiently grounded. Failure of the steering column module clock spring could result in an inadvertent deployment of the driver airbag which may cause risk of injury to the driver and an increased risk of a potential collision.
Remedy
On affected vehicles the manufacturer will fit a contact bridge to the outer race of the steering column top bearing which will provide correct grounding.
Steering column wiring may cause airbag deployment
Reported April 9, 2018Model years 2011–2017DVSA recall R/2018/069402,162 vehicles affected
The steering column clock spring may break, triggering warning messages and, in extreme cases, deploying the driver's airbag. The steering components will be grounded sufficiently.
Official DVSA recall text
Component
ELECTRICAL WIRING IN STEERING ASSEMBLY MAY BE INSUFFICIENTLY GROUNDED
Defect
The steering column clock spring may break. This will cause warning messages to illuminate in the instrument cluster but in extreme instances it may cause the driver's airbag to deploy.
Remedy
Affected vehicles will be recalled to establish sufficient grounding of the steering components.
Steering column wiring fault may deploy airbag
Reported December 18, 2017Model years 2011–2017DVSA recall R/2017/282276,558 vehicles affected
The steering column clock spring may break, causing warning messages and, in extreme cases, deployment of the driver's airbag. The steering components will be grounded sufficiently.
Official DVSA recall text
Component
ELECTRICAL WIRING IN STEERING ASSEMBLY MAY BE INSUFFICIENTLY GROUNDED
Defect
The steering column clock spring may break. This will cause warning messages to illuminate in the instrument cluster but in extreme instances it may cause the driver's airbag to deploy.
Remedy
Affected vehicles will be recalled to establish sufficient grounding of the steering components.
Driver air bag may deploy unexpectedly
Reported October 6, 2017Model years 2014–2017NHTSA campaign 17V627000495,290 vehicles affected
If an electrostatic discharge occurs while the air bag clockspring is broken, insufficient grounding may cause the driver air bag to deploy unexpectedly, increasing the risk of injury or a crash. Dealers will add grounding to the steering components free of charge.
Official NHTSA recall text
Component
AIR BAGS:FRONTAL
Defect
Mercedes-Benz USA, LLC. (MBUSA) is recalling these vehicles: 2014-2018 CLA250, CLA250 4Matic, CLA45 AMG 4Matic, 2015-2018 GLA250, GLA250 4Matic, GLA45 AMG 4Matic, C300 4Matic, C63S AMG, 2012-2014 C250, C350, C300 4Matic, E550 4Matic, 2013-2014 C63 AMG, 2012-2015 C250 Coupe, C350 Coupe, C63 AMG Coupe, 2013-2015 C350 4Matic Coupe, GLK250 4Matic BlueTec, GLK350, GLK350 4Matic, 2016-2017 C350e, C43 AMG, 2015 C400 4Matic, 2016-2018 C63 AMG, GLC300, GLC300 4Matic, 2017-2018 C300 Coupe, C300 4Matic Coupe, C43 AMG, C63 AMG Coupe, C63S AMG Coupe, C300 Cabriolet, C300 4Matic Cabriolet, C43 AMG Cabriolet, C63 AMG Cabriolet, C63S AMG Cabriolet, GLC300 4Matic Coupe, GLC43 AMG, GLC43 AMG Coupe, 2014 E350 Coupe, E350 4Matic Coupe, E350 Cabriolet, E400 Hybrid, 2015-2017 E400 Coupe, E400 4Matic Coupe, E400 Cabriolet, 2014-2017 E550 Coupe, E550 Cabriolet, B250e, 2014-2016 E250 BlueTec, E63 AMG 4Matic Wagon, 2012-2013 E350 BlueTec, 2012-2016 E350, E350 4Matic, 2015-2016 E400, E400 4Matic, 2012 E63 AMG, 2014-2015 E250 4Matic BlueTec, 2013-2016 E350 Wagon, 2017 GLC300d 4Matic, and 2018 GLC350e 4Matic. The driver's air bag may unexpectedly deploy due to insufficient grounding of the steering components if an electrostatic discharge occurs and the air bag clockspring is broken.
Consequence
If the driver air bag inadvertently deploys, it can increase the risk of injury and a crash.
Remedy
MBUSA will notify owners, and dealers will add sufficient grounding to the steering components, free of charge. The recall began in December 6, 2017. Owners may contact MBUSA customer service at 1-877-496-3691.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Brake booster vacuum line may fail
Reported June 20, 2017Model years 2011–2013DVSA recall R/2017/17919,148 vehicles affected
The vacuum line connection may fail, cutting vacuum supply to the brake booster. After a few brake applications, more pressure may be needed on the pedal for the appropriate braking effect. The vacuum line will be replaced with a quality-assured component.
Official DVSA recall text
Component
VACUUM LINE BRAKE BOOSTER MAY BREAK
Defect
The connection fitting of the vacuum line to the brake booster is not to specification and my not be durable. If the connection fails the brake booster will no longer be supplied with vacuum. After a few brake applications the driver will have to apply additional pressure to the brake pedal to gain the appropriate braking effect.
Remedy
Recall the vehicles that are likely to be affected and replace the vacuum line on the brake booster with a quality assured component.
Front passenger airbag may not deploy fully
Reported June 20, 2017Model years 2016–2017DVSA recall R/2017/1775,170 vehicles affected
The airbag igniter propellant mixture may be out of specification, so the front passenger airbag may fail to deploy or deploy only partly when activated, increasing injury risk. The airbag assembly will be replaced.
Official DVSA recall text
Component
AIRBAG MAY NOT DEPLOY CORRECTLY
Defect
The propellant mixing ratio in the igniters of the front passenger airbag assembly may not meet specification. If the airbag is required and activated it might not deploy or not completely deploy. This could increase the risk of injury to the occupants.
Remedy
Recall the vehicles that are likely to be affected and replace the front passenger airbag assembly.
Starting current limiter may overheat
Reported June 20, 2017Model years 2014–2017DVSA recall R/2017/096EU Safety Gate A12/1352/17521,108 vehicles affected
After severe engine damage or seizure, repeated attempts to start the engine could overheat the starting current limiter and cause a fire. An additional fuse will be installed in the starter electrical line.
Official DVSA recall text
Component
STARTING CURRENT LIMITER MAY OVERLOAD
Defect
Where the car incurs severe engine damage resulting in the engine failing to turn over (engine seizure) and if the driver repeatedly attempts to start the engine despite the engine not cranking the very high electrical current could lead to overheating of the starting current limiter and the potential for a fire.
Remedy
Recall the vehicles that are likely to be affected and install an additional fuse in the electrical line to the starter.
Prefuse box connection may overheat or disrupt power
Reported June 24, 2016DVSA recall R/2016/1511 vehicle affected
A threaded connection in the prefuse box may be too loose, creating heat and a fire risk. Vibration may also disrupt power to systems including steering assistance, ABS, SRS or instruments. The connection will be checked and the fuse box replaced if necessary.
Official DVSA recall text
Component
RISK OF FIRE
Defect
A threaded connection in the Prefuse box may not be tightened to the correct specification. This may excessive resistance and create a heat source. This could cause a fire. Additionally vibration may cause power disruption which could affect the operation of steering power assistance ABS SRS and/or instrument failure..
Remedy
On affected vehicles check threaded connection and where necessary replace fuse box.
Rear seat may lift in a collision
Reported May 9, 2016Model years 2012–2016DVSA recall R/2016/091146 vehicles affected
A missing or loose seat retaining bolt may allow the rear seat to lift in a frontal collision and reduce seat belt effectiveness. Retaining screws will be checked, fitted if needed and tightened.
Official DVSA recall text
Component
REAR BENCH SEAT MAY LIFT UP FROM THE REAR IN A COLLISION & ATTACHED SEAT BELTS MAY NOT BE ANCHORED CORRECTLY
Defect
On 'B' Class models fitted with 'Easy Vario' rear seat option a bolt securing the seat bench to the body may have been omitted during production. This may allow the seat bench to lift during a frontal collision. Seat belt effectiveness may also be compromised.
Remedy
On affected vehicles check for presence and tightness of retaining screws. Fit new screws where necessary and tighten all screws to specification.
High-pressure fuel lines may crack and leak
Reported January 21, 2016Model years 2015DVSA recall R/2015/25911,943 vehicles affected
Fuel lines may crack over time and leak; escaping fuel near an ignition source could cause a fire. The high-pressure fuel lines will be replaced.
Official DVSA recall text
Component
RISK OF FIRE
Defect
The high pressure fuel lines have not been manufactured to the correct specification which over time can lead to crack formation and fuel leaking. Fuel escaping in the presence of an ignition source could lead to fire.
Remedy
Recall the vehicles that are likely to be affected and replace the high pressure fuel lines.
Electric powertrain may shut down
Reported December 1, 2015Model years 2014–2015DVSA recall R/2015/231243 vehicles affected
In rare cases, an incorrect message from the propulsion control unit may shut down the electric powertrain. Power can be restored using the normal start sequence. The software will be updated.
Official DVSA recall text
Component
VEHICLE MAY CUT OUT
Defect
In rare cases the propulsion control unit may send an incorrect message. This may cause the electric power train to shut down. Power can be restored by the normal start sequence.
Remedy
Update software on affected vehicles.
Exhaust camshaft may break and damage engine
Reported November 19, 2015Model years 2015DVSA recall R/2015/2102,765 vehicles affected
An incorrectly manufactured camshaft could break and damage the engine, causing sudden loss of drive and increasing collision risk. The exhaust camshaft will be replaced.
Official DVSA recall text
Component
ENGINE MAY FAIL
Defect
The camshaft could break and damage the engine due to it not being manufactured to the correct specification. If the condition occurs it will lead to a sudden loss of drive thereby increasing the risk of a collision.
Remedy
Recall the vehicles that are likely to be affected and replace the exhaust camshaft.
Electric drive system may shut down
Reported October 14, 2015Model years 2014–2015NHTSA campaign 15V6550002,618 vehicles affected
A communication error may shut down the electric powertrain, temporarily immobilising the vehicle and causing loss of propulsion, which increases crash risk. Dealers will update the electric drive system software free of charge.
Official NHTSA recall text
Component
ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
Defect
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.
Consequence
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.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Passenger airbag may not deploy in a crash
Reported August 12, 2015Model years 2014DVSA recall R/2015/1454,112 vehicles affected
Incorrectly fitted fuses may affect passenger seat occupancy recognition and prevent the passenger airbag from deploying in certain conditions. The fuses will be checked and the fuse box replaced if necessary.
Official DVSA recall text
Component
FRONT PASSENGER AIRBAG MAY NOT DEPLOY
Defect
Certain fuses in the passenger's footwell may not have been fitted correctly. This may adversely affect the instrument cluster windscreen wipers and the passenger seat occupancy recognition system. In certain conditions this may cause the passenger's air bag not to deploy in an accident.
Remedy
On affected vehicles check fuses and if necessary replace fuse box.
Drive shaft may separate from the wheel hub
Reported July 14, 2015Model years 2011–2013DVSA recall R/2015/09911,670 vehicles affected
The drive shaft may separate from the outer joint hub, possibly stopping the vehicle. Steering and braking remain available. The snap rings and outboard boots on both sides will be replaced.
Official DVSA recall text
Component
POSSIBILITY OF LOSS OF DRIVE
Defect
The drive shaft and the hub of the outer joint may separate. In very rare cases it cannot be excluded that the vehicle stops. The steering and braking system remain fully available to the driver.
Remedy
Recall the vehicles that are likely to be affected to replace the snap ring both sides together with the respective outboard boots on the affected vehicles.
Chain tensioner seal may leak oil
Reported January 16, 2015Model years 2014DVSA recall R/2014/182555,048 vehicles affected
A seal that does not meet specification may leak oil and contaminate the environment; excessive oil loss may damage the engine. The chain tensioner sealing ring will be replaced.
Official DVSA recall text
Component
OIL MAY LEAK
Defect
On certain diesel engines the 'O' ring may not have been produced to the correct specification. This may allow oil to leak and contaminate the environment. If excessive oil is lost engine damage may occur.
Remedy
On affected vehicles replace the chain tensioner sealing ring.
Rear seat backrest lock may fail
Reported July 25, 2013Model years 2012DVSA recall R/2013/069100 vehicles affected
The rear backrest lock may be out of specification and could fail under extreme loading, such as in a rear-end collision, allowing the backrest to fold forward and possibly injure an occupant. The lock will be checked and replaced if needed.
Official DVSA recall text
Component
REAR BACK-REST MAY FAIL
Defect
It is possible that vehicles fitted with the Easy Vario seat system may have a seat back-rest lock that is not to specification. This could in the event of extreme loading (a rear end collision) result in the lock failing and the seat back-rest folding forward possibly causing injury to the occupant.
Remedy
Recall all affected vehicles to check and if required replace the rear back-rest lock.
Transmission clutch may go out of tolerance
Reported May 18, 2012Model years 2011DVSA recall R/2012/063102 vehicles affected
A gearbox clutch connection may go out of tolerance, causing chattering, a warning message and symptoms like clutch slip. The transmission belt will be checked and the transmission replaced if necessary.
Official DVSA recall text
Component
TRANSMISSION MAY NOT OPERATE CORRECTLY
Defect
A frictional connection (clutch within the gearbox) may go out of tolerance and produce a chattering noise. This will be followed by a warning message appearing in the instrument cluster and symptoms similar to a slipping clutch.
Remedy
Recall the vehicles that are likely to be affected to check the thrust link belt of the continuously variable transmission. Where necessary the transmission will be replaced.
Fuel tank vent pipe may cause a fuel leak
Reported September 30, 2010DVSA recall R/2010/123294 vehicles affected
An out-of-specification fuel tank vent pipe can allow fuel into the charcoal canister and, over time, cause a fuel leak. The fuel tank will be replaced.
Official DVSA recall text
Component
FUEL MAY LEAK
Defect
It is possible on some fuel tanks that the vent pipe is not to specification. This can lead to a small leak into the charcoal canister and if not rectified can over a period of time result in a fuel leak.
Remedy
Recall the affected vehicles and replace the fuel tank.
Seat belt buckle may detach
Reported October 14, 2008DVSA recall R/2008/126388 vehicles affected
Seat belt locking pawls may break in a crash, potentially causing the buckle to detach. The seat belt batch number will be checked and the belt replaced if needed.
Official DVSA recall text
Component
SEAT BELT BUCKLE COULD DETACH.
Defect
Seat belt locking pawls may break in the event of an accident which in the most unfavourable circumstances may lead to the seat belt buckle detaching
Remedy
Recall the vehicles that are likely to be affected to check the seat belt batch number and replace the seat belt where necessary.

Sources: NHTSA (US National Highway Traffic Safety Administration), DVSA (UK Driver and Vehicle Standards Agency) and the EU Safety Gate (European Commission) recall data. Each recall covers vehicles sold in that market; models sold elsewhere may differ.

Back to the Mercedes-Benz B-Class

Steering software backup may fail

Engine control software may not meet local requirements

Diesel engine control unit software needs an update

Engine management calibration needs updating

Emergency call system may not meet specifications

Steering shaft universal joint bore may be out of specification

Emergency call system may not behave as specified

Emergency call system may not work as specified

Emergency call system may not meet specifications

Emergency call system may not meet specifications

Emergency call system may not work to specification

Emergency call system may not behave as specified

Emergency call system may not meet specifications

Steering shaft bearing may separate from universal joint

Communication module may be deactivated

Emergency call system may send incorrect location

Engine control unit electrical contact may be faulty

Turbocharger oil supply line may leak

Emergency call system software may not meet specifications

Passenger seat occupant system may be miscalibrated

Air conditioning refrigerant does not meet legal requirements

Air conditioning refrigerant does not meet requirements

Air conditioning refrigerant may not meet requirements

Emergency call system may report an inaccurate location

Radar control unit software may not meet specification

Air conditioning refrigerant does not meet requirements

Transmission may not shift into Drive or Reverse

High beam may not switch off with the lever

Driver's airbag locknuts may be loose

Passenger seat occupant system may be incorrectly calibrated

Left side doors may remain locked

Steering wiring fault may deploy the driver's airbag

Steering components may be insufficiently grounded

Steering column wiring may cause airbag deployment

Steering column wiring fault may deploy airbag

Driver air bag may deploy unexpectedly

Brake booster vacuum line may fail

Front passenger airbag may not deploy fully

Starting current limiter may overheat

Prefuse box connection may overheat or disrupt power

Rear seat may lift in a collision

High-pressure fuel lines may crack and leak

Electric powertrain may shut down

Exhaust camshaft may break and damage engine

Electric drive system may shut down

Passenger airbag may not deploy in a crash

Drive shaft may separate from the wheel hub

Chain tensioner seal may leak oil

Rear seat backrest lock may fail

Transmission clutch may go out of tolerance

Fuel tank vent pipe may cause a fuel leak

Seat belt buckle may detach