Car Problem Reports

Mercedes-Benz ML63 AMG Airmatic Pump Relay May Stick and Cause Dead Battery

 
Mercedes-Benz ML63 AMG Problem
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Model Years Affected: 2007, 2008, 2009, 2010

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On vehicles with airmatic suspension, the airmatic pump relay can stick, causing a dead battery, because the pump continues to operate when it should be shut off. Eventually, the pump will fail; the pump, fuse, and relay will need replacement. After parking and exiting the vehicle, the airmatic pump should only run for a few seconds before turning off. It should not come back on until the driver's door is opened.

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