Airmatic Pump Relay May Stick and Cause Dead Battery on Mercedes-Benz ML500

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.

RepairPal Verified
Average mileage: (–)
2 model years affected: 2006, 2007
2 people reported this problem
0 people shared problem details
Related Items:
After a heavy rain storm, the drains for the heating, ventilation and AC (HVAC) system intake c...
 The tailgate latch may stick causing a drain on the battery while the vehicle is parked.
my ml500 has been shaken the fuel pump coil packs and wires has been changed ran for a couple d...
A problem with the ball joints can cause a creaking noise. There is an updated part to remedy t...

Related Content