If the air suspension is not working properly in Your Mercedes W211 then You should try to reset the system. To allow the air compressor system to reset all You will need to do is disconnect the positive and negative battery cables from the battery and touch them together. You then should let those sit for about ten minutes to allow the system to power down completely. Once the vehicle has lost all power You can connect it back to the battery and then turn it back on. The air suspension should fire up and start working after that. If it is not working right then You should inspect the compressor and the lines to make sure that there are no leaks.
Daniel
February 26, 2022
Why my Airmatic suspension stays raised and fery stiff?
Walter
March 3, 2022
What battery I’m I supposed to disconnect, is it the back one or the front one
Joe
February 10, 2022
Are you kidding? 😂😂😂😂 you're a bad guy trying to cause problems
Mark
May 4, 2022
My air suspension wasn’t working I tried to disconnect on the battery my cables weren’t long enough to touch so I left them disconnected for about 15 minutes it worked the self leveling system is back to normal
Hi I replace a front struts in my S550 , works fine but when i leave over night loosing air all the way only front
Pieter Gildenhuys
January 20, 2023
@Mark Gaska, I had the same problem. Traced it to mis-matching air hose seals at the top of the struts: the new struts had slightly deeper holes there, the original seals stopped short of sealing properly. Cut off old brass seals from the hose, fitted new ones, problem solved
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