Mercedes-Benz Cla reliability

Mercedes-Benz AG has determined that on certain CLA (174 platform) vehicles the software of the driving assistance system might not meet specifications.

Fix: As a remedy Mercedes-Benz AG via its Mercedes-Benz service partners will update the software of the driving assistance system on the affected vehicles.

Recalled models: CLA · 649 vehicles

Mercedes-Benz AG has determined that on certain CLA (174 platform) vehicles the composition of the window-airbag fabric might not meet specifications.

Fix: As a remedy Mercedes-Benz AG via its Mercedes-Benz service partners will replace the window-airbags on the affected vehicles.

Recalled models: CLA · 16 vehicles

Mercedes-Benz AG has determined that on certain CLA (174 platform) vehicles the software of the driving assistance system might not meet specifications.

Fix: As a remedy Mercedes-Benz AG via its Mercedes-Benz service partners will update the software of the driving assistance system on the affected vehicles.

Recalled models: CLA · 19 vehicles

Mercedes-Benz AG has determined that on certain A-Class (177 platform) and CLA (118 platform) vehicles the length of the brake hoses on the rear axle might not meet specifications.

Fix: As a remedy Mercedes-Benz AG via its Mercedes-Benz service partners will check the brake hoses on the rear axle on the affected vehicles and replace them if necessary.

Recalled models: CLA · 254 vehicles

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.

Fix: Update the software of the electric steering on the affected vehicles.

Recalled models: CLA · 52,400 vehicles

On affected vehicles the panel located between the windshield and the panoramic sunroof might not have been bonded correctly during a prior service repair.

Fix: Check the front fixed element of the panoramic sliding sunroof and replace if necessary.

Recalled models: CLA(117) · 45 vehicles

On affected vehicles the tyres might not meet specification resulting in a leak and possible sudden loss of air pressure.

Fix: Replace the tyres.

Recalled models: CLA(118) · 1 vehicles

Bowden cables with an insufficient length might have been installed in the front doors

Fix: Check the bowden cables of the front doors on the affected vehicles and replace if necessary.

Recalled models: CLA(118) · 12 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: CLA(118) · 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: CLA(118) · 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: CLA(118) · 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: CLA(118) · 2,829 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: CLA · 23 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: CLA(117) · 21 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: CLA(118) · 50,390 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: CLA(117) · 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: CLA(117) · 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: CLA(118) · 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: CLA · 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: CLA(117) · 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: CLA(118) · 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: CLA(118) · 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: CLA(118) · 10,410 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: CLA(118) · 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: CLA(118) · 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: CLA(117) · 162,581 vehicles

The variant of spark plugs installed may not meet specifications.

Fix: Replace the spark plugs on the affected vehicles.

Recalled models: CLA · 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: CLA · 24 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: CLA · 543 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: CLA · 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: CLA · 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: CLA · 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: CLA · 3,127 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: CLA · 134 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: CLA · 75 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: CLA · 1,407 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: CLA · 58 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: CLA · 2,345 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: CLA · 432 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: CLA · 294 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: CLA · 1,209 vehicles

The electrical contact of the tail lamps might be impaired.

Fix: The bulb sockets of the affected vehicles are to be replaced.

Recalled models: CLA · 1 vehicles

Incorrect calibration of the front passenger occupant classification system.

Fix: Replace the seat cushion of the front passenger seat.

Recalled models: CLA · 163 vehicles

Possible inability to open the left hand door externally or internally.

Fix: Replace the affected door locks on the left side of the vehicle.

Recalled models: CLA · 5,030 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: CLA · 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: CLA · 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: CLA · 67,027 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: CLA · 46,093 vehicles

The left widow airbag may not meet specification. As a result it may not deploy in the event of an accident.

Fix: On affected vehicles replace the left window air bag.

Recalled models: CLA · 15 vehicles

The right widow airbag may not meet specification. As a result it may not deploy in the event of an accident.

Fix: On affected vehicles replace the right window air bag.

Recalled models: CLA · 17 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: CLA · 4,787 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: CLA · 74,444 vehicles

The left and right widow airbags may not meet specification. As a result they may not deploy in the event of an accident.

Fix: On affected vehicles replace the left and right window air bags.

Recalled models: CLA/GLA · 1 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: CLA · 1,034 vehicles

Where a control unit coding was updated in a workshop between 3 December 2016 and 5 December 2016 the coding may not correspond to the specification and may trigger unplanned action in the vehicle. The safety and emissions systems may not react as design intent.

Fix: Recall the vehicles that are likely to be affected and update the software in the corresponding control units.

Recalled models: CLA · 42 vehicles

It has been identified on the CLA Shooting Brake models with load compartment package the rear seat back-rest retaining bracket threaded connection may not have been manufactured to the correct specification. If the vehicle is involved in a frontal collision and the rear seat back-rest is subjected to heavy loadings from heavy items moving in the truck then the retaining bracket can work loose and allow the rear seat back-rest to collapse and possible cause an injury to any occupants.

Fix: Recall the affected vehicle and replace the rear seat back-rest retaining bracket mounting bolts.

Recalled models: CLA · 1 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: CLA · 38 vehicles

The mounting nut for the battery ground line at the body may not have been tightened correctly. If the connection is loose there could be sparks and localised heating which increases the risk of fire.

Fix: Recall the vehicles that are likely to be affected and check and rework the threaded connection as necessary.

Recalled models: CLA · 4 vehicles

The torque sensor of the electric power steering assistance may be damaged which can adversely affected the tightness of the housing and allow water ingress. The defect could lead to failure of the torque sensor and consequently shut off the steering power assistance and lead to an elevated risk of collision.

Fix: Recall the vehicle that is likely to be affected and replace the electric power steering.

Recalled models: CLA · 1 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: CLA · 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: CLA · 395 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 intake camshaft.

Recalled models: CLA · 14 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: CLA · 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: CLA · 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: CLA · 61,672 vehicles

On affected vehicles individual threaded seat belt connections may not have been tightened to the correct torque. This may affect the anchoring of seat belts window bags and ground points. The manufacturer cannot completely rule out that the affected components may not fulfil their designated functions as the seat belt anchorage points may not be fully secure. It is also possible that this may cause erroneous messages to appear in the instrument cluster

Fix: Recall vehicles and check torque settings on affected threaded connections. Correct where necessary

Recalled models: CLA · 7 vehicles

On affected vehicles individual threaded seat belt connections may not have been tightened to the correct torque. This may affect the anchoring of seat belts window bags and ground points. The manufacturer cannot completely rule out that the affected components may not fulfil their designated functions as the seat belt anchorage points may not be fully secure. It is also possible that this may cause erroneous messages to appear in the instrument cluster

Fix: Recall vehicles and check torque settings on affected threaded connections. Correct where necessary.

Recalled models: CLA · 2 vehicles