2012 Mercedes-Benz CLS550 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2012 Mercedes-Benz CLS550

A sticking relay, causing the airmatic pump motor to constantly run, may causee the airmatic pump motor to fail or the battery to go dead when the car is shut off. Worn airmatic pump mount bushings can causes noises in the front axle while driving on bumpy roads or a buzzing noise.

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The tail lights may not light up on the sides, which can make it difficult to see the vehicle. This fails to comply with federal safety standards. Dealer will update the lighting controller software free of charge to correct the problem.

The bolts securing the secondary hood latch may not have been properly tightened during vehicle assembly on 23 vehicles. The could result in the secondary hood latch becoming ineffective. If the hood were not properly secured by the primary latch and the the secondary latch was not functioning, the hood could open while driving, increasing the risk of a crash. Dealers will check and retighten the bolts on the secondary latch as necessary to correct this concern.

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