Mercedes-Benz A-Class reliability

Affected vehicles have an engine control unit software that deviates from the local legal requirements.�

Fix: Update the diesel engine control unit software.

Recalled models: A CLASS · 2,593 vehicles

A particle in the fuel rail might lead to a leak between the fuel rail and the fuel injector.�

Fix: Replace the fuel rail and fuel injectors on the affected vehicles.�

Recalled models: A CLASS · 26 vehicles

The bolting on the brake caliper housing might not meet torque specifications.�

Fix: Check and if necessary rework the bolting of the brake caliper housings on the affected vehicles.

Recalled models: A CLASS · 17 vehicles

On certain vehicles the power supply connection of the electric power steering might have been contaminated with melted adhesive.

Fix: Check the connection on the affected vehicles and perform repair measures if necessary.

Recalled models: A CLASS · 113 vehicles

On certain vehicles with an additional door lock the locking pawl spring of the left side door locks might not be greased according to specifications.

Fix: Conduct greasing of the locking pawl spring on the affected vehicles.

Recalled models: A CLASS · 2,829 vehicles

On certain vehicles the corrosion protection of the high-voltage battery housing might not be ensured over the lifetime of the vehicle.

Fix: Check the high-voltage battery of the affected vehicles and if necessary carry out rework measures.

Recalled models: A CLASS (177) · 2 vehicles

As a result of a directive from Germany�s Federal Motor Transport Authority (KBA) changes are required to certain specific calibration functions within the engine management systems of certain vehicles.

Fix: Conduct an update to the diesel engine control unit software.

Recalled models: A CLASS(176) · 31,414 vehicles

As a result of a directive from Germany�s Federal Motor Transport Authority (KBA) changes are required to certain specific calibration functions within the engine management systems of certain vehicles.

Fix: Conduct an update to the diesel engine control unit software.

Recalled models: A CLASS · 6,014 vehicles

The behaviour of the emergency call system might not meet specifications.

Fix: Update the software of the communication module for the emergency call system.

Recalled models: A CLASS · 7 vehicles

The behaviour of the emergency call system might not meet specifications.

Fix: Update the software of the communication module for the emergency call system.

Recalled models: A CLASS (177) · 50,390 vehicles

Nitrogen oxide emissions may not meet requirements.

Fix: Update the diesel engine control unit software.

Recalled models: A CLASS · 237 vehicles

The polycarbonate panel located between the windshield and the panoramic sunroof may not have been bonded correctly during a prior service repair.

Fix: Remove the bonded panel and install a new polycarbonate panel if required.

Recalled models: A CLASS(176) · 61 vehicles

The driver's airbag may have a chemical change to its propellant over time.

Fix: Replace the driver�s airbag.

Recalled models: A CLASS · 108,486 vehicles

The driver's airbag may have a chemical change to its propellant over time.

Fix: Replace the driver�s airbag

Recalled models: A CLASS · 61 vehicles

A bore in the universal joint on the steering shaft might not meet specifications.

Fix: Check the steering shaft on the affected vehicles and replace it if necessary.

Recalled models: A CLASS(176) · 13,707 vehicles

The bolting of a side crash sensor may not meet specifications.

Fix: Check the bolting of the side crash sensor on the affected vehicles and rework it if necessary.

Recalled models: A CLASS (177) · 19 vehicles

The behaviour of the emergency call system might not meet specifications.

Fix: Update the software of the communication module for the emergency call system.

Recalled models: A CLASS · 108,971 vehicles

The behaviour of the emergency call system might not meet specifications.

Fix: Update the software of the communication module for the emergency call system.

Recalled models: A CLASS (177) · 16,122 vehicles

The behaviour of the emergency call system might not meet specifications.

Fix: Update the software of the communication module for the emergency call system.

Recalled models: A CLASS (177) · 86,604 vehicles

The behaviour of the emergency call system might not meet specifications.

Fix: Update the software of the communication module for the emergency call system.

Recalled models: A CLASS (177) · 90,716 vehicles

The behaviour of the emergency call system might not meet specifications.

Fix: Update the software of the communication module for the emergency call system.

Recalled models: A CLASS (177) · 106,665 vehicles

The behaviour of the emergency call system might not meet specifications.

Fix: Update the software of the communication module for the emergency call system.

Recalled models: A CLASS (177) · 7 vehicles

The behaviour of the emergency call system might not meet specifications.

Fix: Update the software of the communication module for the emergency call system.

Recalled models: A CLASS (177) · 162,581 vehicles

The behaviour of the emergency call system might not meet specifications.

Fix: Update the software of the communication module for the emergency call system.

Recalled models: A CLASS (177) · 81,267 vehicles

The behaviour of the emergency call system might not meet specifications.

Fix: Update the software of the communication module for the emergency call system.

Recalled models: A CLASS (177) · 10,410 vehicles

The variant of spark plugs installed may not meet specifications.

Fix: Replace the spark plugs on the affected vehicles.

Recalled models: A CLASS · 7 vehicles

The communication module may be deactivated

Fix: Carry out a check of the configuration of the communication module on affected vehicles and if necessary activate the communication module.

Recalled models: A CLASS · 24 vehicles

The software of certain communication modules may not meet specifications.

Fix: Carry out an update to the software of the communication module on affected vehicles.

Recalled models: A CLASS · 36 vehicles

The ISOFIX bracket might be missing on the right rear seat.

Fix: Check the ISOFIX bracket on the affected vehicles and replace it if necessary.

Recalled models: A CLASS · 543 vehicles

The oil level in the dual clutch transmission might not meet specifications.

Fix: Check the dual clutch transmission on the affected vehicles and correct the oil level or replace the dual clutch transmission if necessary.

Recalled models: A CLASS · 129 vehicles

The oil level in the dual clutch transmission might not meet specifications.

Fix: Check the dual clutch transmission on the affected vehicles and correct the oil level.

Recalled models: A CLASS · 72 vehicles

The screw connection of the control unit box might not meet the specification.

Fix: Check the screw connection on the affected vehicles and correct it if necessary.

Recalled models: A CLASS · 70 vehicles

An electrical contacting inside the engine control unit might not meet the specification

Fix: Replace the engine control unit on the affected vehicles

Recalled models: A CLASS · 37 vehicles

The air conditioning system on the affected vehicles might erroneously be filled with the incorrect refrigerant

Fix: Replace the refrigerant in the air conditioning system on the affected vehicles.

Recalled models: A CLASS · 30 vehicles

The oil supply line of the turbocharger might leak

Fix: Check the oil supply line of the turbocharger on the affected vehicles and replace it if necessary

Recalled models: A CLASS · 1,074 vehicles

On affected vehicles the software of the communication module for the emergency call system does not meet the specification

Fix: Update the software of the communication module for the emergency call system

Recalled models: A CLASS · 3,127 vehicles

Condensation water from the air conditioning might enter the passenger compartment

Fix: Check the installation of the air conditioning drain hose and correct it if necessary.

Recalled models: A CLASS · 20,536 vehicles

The bolts on the rear axle might not be tightened correctly

Fix: Check the tightening of the bolts on the rear axle on the affected vehicles and correct it if necessary

Recalled models: A CLASS · 11 vehicles

The calibration of the occupant classification system for the passenger seat might not meet the specification.

Fix: Replace the passenger seat cushion

Recalled models: A CLASS · 75 vehicles

The mounting of an argon gas line to generator of the inerter system might not meet specifications.

Fix: Check the mounting of the gas line to the gas generator on the affected vehicles and rework it if necessary.

Recalled models: A CLASS (177) · 134 vehicles

The glass panel of the sliding roof might not have been bonded properly.

Fix: Replace the glass panel of the panoramic roof on the affected vehicles

Recalled models: A CLASS (177) · 1 vehicles

A weld seam on the height adjustment of the left front seat might be insufficiently welded

Fix: Replace the tilt adjuster of the left front seat on the affected vehicles

Recalled models: A CLASS (177) · 380 vehicles

Front seat belt may not be mounted correctly

Fix: Check the bolt connection on the front seat belt end fitting and repair if necessary.

Recalled models: A CLASS · 605 vehicles

The refrigerant used in the air conditioning system does not meet legal requirements

Fix: The air conditioning system will be adapted for the usage of the new refrigerant.

Recalled models: A CLASS · 2,140 vehicles

The refrigerant used in the air conditioning system does not meet legal requirements.

Fix: The air conditioning system will be adapted for the usage of the new refrigerant.

Recalled models: A CLASS · 624 vehicles

The refrigerant used in the air conditioning system does not meet legal requirements.

Fix: Adapt the air conditioning system for usage of the new refrigerant.

Recalled models: A CLASS · 1,407 vehicles

Certain driver airbag modules might not be bolted onto the base plate.

Fix: Check the driver airbag on the affected vehicles and replace it if necessary.

Recalled models: A CLASS · 2,345 vehicles

The rear right wheel carrier might have been manufactured outside specification.

Fix: Check the rear right wheel carrier on the affected vehicles and replace it if necessary.

Recalled models: A CLASS · 246 vehicles

The protective tinplate underneath the spare wheel recess might tear

Fix: Replace the protectuve tinplate on the affected vehicles

Recalled models: A CLASS (177) · 326 vehicles

; The software of the radar control unit might not meet the specification

Fix: Update the software of the radar sensor control unit on the affected vehicles.

Recalled models: A CLASS · 294 vehicles

The refrigerant used in the air condition system does not meet legal requirements.

Fix: The air conditioning system to be adapted for the usage of the new refrigerant (R1234yf).

Recalled models: A CLASS · 7,516 vehicles

The durability of the crankshaft might be impaired.

Fix: Replace the engine on affected vehicles.

Recalled models: A CLASS (177) · 35 vehicles

Under certain circumstances it might not be possible to shift into Drive or Reverse mode.

Fix: Update the transmission control unit software of the affected vehicles.

Recalled models: A CLASS · 1,209 vehicles

The ECO Start-Stop function may be disabled and cause the vehicle to stall.

Fix: The affected vehicles are to be recalled and the software updated.

Recalled models: A CLASS · 69 vehicles

The driver might temporarily not be able to deactivate the high beam with the high beam lever.

Fix: The software is to be updated on affected vehicles.

Recalled models: A CLASS · 957 vehicles

One or more of the four locknuts securing the drivers airbag might be insufficiently tightened.

Fix: Replace the driver airbag of affected vehicles.

Recalled models: A CLASS (177) · 3 vehicles

Shock absorbers that are too long may have been installed. As a result the brake hoses may be under too much tension.

Fix: The rear axle shock absorbers and rear axle brake hoses are to be checked and replaced if necessary.

Recalled models: A CLASS (177) · 2,476 vehicles

The flat conductor of the starter wiring harness might not have been routed according to specifications.

Fix: On affected vehicles the flat conductor will be checked and replaced if necessary.

Recalled models: A CLASS (177) · 41 vehicles

On the front passenger airbag deployment the airbag could be damaged as it opens.

Fix: The affected vehicles are to be recalled and the dashboard replaced.

Recalled models: A CLASS (177) · 2 vehicles

The locks of the right and/or left seat backrest may not be able to lock.

Fix: The seat backrest locks will be checked and replaced if necessary.

Recalled models: A CLASS · 7 vehicles

Multi beam LED Headlamp control units may not correspond with the specifications.

Fix: On affected vehicles recode the control units of the headlamps and LED matrix on the left & right.

Recalled models: A CLASS · 449 vehicles

Emergency call software not to specification

Fix: Update software on affected vehicles

Recalled models: A CLASS (177) · 9 vehicles

On affected vehicles it has been determined that drivers airbags with potentially faulty gas generator housing material may have been installed in vehicles of model series 156 176 246 205 238 & 253. If the material of the gas generator housing fails during airbag deployment in the event of a crash the airbag system would possibly no longer have a restraint effect. In addition separating parts could enter the passenger compartment. This could lead to an increased risk of injury.

Fix: On affected vehicles replace the driver�s airbag

Recalled models: A CLASS · 421 vehicles

It has been determined that the A-Class 177 might have some missing welding points in the area of both front side members. It is possible that due to a deviation in the internal production process a couple of welding points could not have been set .

Fix: If these welding points are not present the structural behaviour would be impaired in the event of a crash. In this case an increased risk of injury for the passengers cannot be excluded. As a precautionary measure recall the affected vehicles and check the welding points and rework if necessary.

Recalled models: A CLASS (177) · 2 vehicles

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.

Fix: Affected vehicles will be recalled to establish sufficient grounding of the steering components

Recalled models: A CLASS · 78,608 vehicles

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.

Fix: 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.

Recalled models: A CLASS · 74,329 vehicles

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.

Fix: Affected vehicles will be recalled to establish sufficient grounding of the steering components.

Recalled models: A CLASS · 67,027 vehicles

The bonding of the windshield in the lower area may not correspond to the specification. During a collision the bonding may fail and the windscreen may detach. This could have an adverse affect on the effectiveness of the passenger airbag.

Fix: On affected vehicles check bonding and if necessary replace windscreen.

Recalled models: A CLASS · 40 vehicles

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.

Fix: Affected vehicles will be recalled to establish sufficient grounding of the steering components.

Recalled models: A CLASS · 46,093 vehicles

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.

Fix: Recall the vehicles that are likely to be affected and install an additional fuse in the electrical line to the starter.

Recalled models: A CLASS · 74,444 vehicles

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.

Fix: Recall the vehicles that are likely to be affected and replace the vacuum line on the brake booster with a quality assured component.

Recalled models: A CLASS · 4,787 vehicles

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.

Fix: Recall the vehicles that are likely to be affected and replace the front passenger airbag assembly.

Recalled models: A CLASS · 1,034 vehicles

A potentially faulty weld between the plate carrier and the hub of a clutch could be faulty/cracked and could fail. This can cause limp-home mode to be adopted or all drive to be lost. As a result the risk of a collision is heightened.

Fix: Recall the vehicles that are likely to be affected and replace the dual clutch of the transmission.

Recalled models: A CLASS · 38 vehicles

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.

Fix: Recall the vehicles that are likely to be affected and replace the high pressure fuel lines.

Recalled models: A CLASS · 1,327 vehicles

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.

Fix: Recall the vehicles that are likely to be affected and replace the exhaust camshaft.

Recalled models: A CLASS · 395 vehicles

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.

Fix: On affected vehicles check fuses and if necessary replace fuse box.

Recalled models: A CLASS · 1,028 vehicles

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.

Fix: 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.

Recalled models: A CLASS · 3,890 vehicles

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.

Fix: On affected vehicles replace the chain tensioner sealing ring.

Recalled models: A CLASS · 61,672 vehicles

On certain models fitted with the AMG seats it is possible that if the vehicle is involved in a side impact during very cold conditions below freezing the side cover for the back-rest member could become loose and cause injury.

Fix: Recall all affected vehicles and replace the side cover with new replacement item.

Recalled models: A CLASS · 59 vehicles

The laser perforation of the instrument panel (i.e. the predetermined fracture point intended for the unfolding of an airbag from the inside) for the front passenger airbag may not have been performed correctly. If this is the case in the event of a serious frontal collision during which the triggering threshold of the front passenger airbag is reached it is possible that this may not unfold as intended and correspondingly not offer its full protective potential.

Fix: Recall the vehicles that are likely to be affected to check and where necessary replace the instrument panel.

Recalled models: A CLASS · 111 vehicles

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.

Fix: 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.

Recalled models: A CLASS · 51 vehicles

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.

Fix: Recall the affected vehicles and replace the fuel tank.

Recalled models: A CLASS · 147 vehicles

Possibility of transfer of incorrect control unit software which could affect engine shut off control in an emergency situation or the on board diagnosis system or tank/speedometer signal

Fix: Recall affected vehicles and replace SAM control unit

Recalled models: A CLASS · 72 vehicles

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

Fix: Recall the vehicles that are likely to be affected to check the seat belt batch number and replace the seat belt where necessary.

Recalled models: A CLASS · 194 vehicles

It has been identified that during the manufacturing process a notch may have been formed on the wiper arm which in extreme cases can cause the arm to fracture.

Fix: Recalled vehicles will have the wiper arm inspected and replaced if found to be suffering from this defect.

Recalled models: A CLASS · 16,202 vehicles

Due to an internal issue with the brake master cylinder it is possible that when the vehicle is operated at ambient temperatures below 0 degrees Celsius there maybe an increase in brake travel which may increase stopping distances.

Fix: Recall all affected vehicles for the replacement of the brake master cylinder.

Recalled models: A CLASS · 563 vehicles