2011 Mercedes-Benz CLS550 Problems

RepairPal has identified the most common problems with the 2011 Mercedes-Benz CLS550 as reported by actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

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2
Known Problems

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.

Rear air springs (bellows) may develop leaks, which causes the air pump to run more often to maintain ride height. Our technicians recommend that leaking air springs be replaced.