Car Problem Reports

Mercedes-Benz E350 4MATIC Airmatic Pump Motors May Fail Due to Sticking Relays

Mercedes-Benz E350 4MATIC Problem
6 Reports
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Model Years Affected: 2006, 2007, 2008, 2009, 2010


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.

  • Visitor, , 55,000 mi

    After a week in LT airport parking, I returned to a pimped out wagon. The air had released from airmatic but fortunately, it filled back up after a few min of engine idle. Still, dealer is replacing under ext warranty. Also, I gather this is a June 2012 recall item.

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