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Mercedes-Benz CLS55 AMG Problems

Airmatic Pump Motor May Fail Due to Sticking Relay on Mercedes-Benz CLS55 AMG

Problem Description and Possible Solution

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.

(4 people reported this problem)

Mercedes-Benz CLS55 AMG Vehicles With This Problem

RepairPal Verified
Average mileage: 88,000 (72,000–104,000)
1 model year affected: 2006
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Viewing 1-2 of 2 comments
I had an airomatic strut problem but I got that fixed. However, I have been having a parasitic battery drain that I can not seem to find. I saw this common problem and was wondering if the airomatic relay could be the culprit. I suppose I have to get it scanned to be certain but if the airomatic pump is on after the car is turned off it could be the problem because it will continue to adjust the ride height.