2011 Mercedes-Benz CLS550 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2011 Mercedes-Benz CLS550
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2011 Mercedes-Benz CLS550 ProblemsAirmatic Pump Motor May Fail Due to Sticking Relay
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.
2011 Mercedes-Benz CLS550 QuestionsWhat would cause a vibration that seems to be a cabin area vibration. (1 answer)
When I drive the car, starting at about 35 to 80 mph, I get a harmonic cabin vibration for about 35 - 40 miles. It even happens on a newly paved 6 miles stretch of brand new highway. It begins to dissipate the further I drive. On my way home I get no vibration or its very faint no matter the ro...
no faults found when scanned, all the controls inside are working correctly, has the a correct charge of freon, has no power at the a/c compressor when checked with a test light, do have power on the red/white wire on the high pressure switch.