Problem Reports
Mercedes-Benz S500 4MATIC
Report: Airmatic Pump Motors May Fail Due to Sticking Relays
Mercedes-Benz S500 4MATIC Problem
5 Reports
Model Years Affected: 2003, 2004, 2005, 2006
Verified
The relay which turns the airmatic suspension pump on may fail causing the pump to run continuously. This can result in failure of the pump motor or a dead battery as the pump motor will continue to run after the car is turned off. Also, Worn airmatic pump mount bushings can causes noises in the front axle while driving on bumpy roads or a buzzing noise while the pump is running.
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