Date registered: Oct 2004
Vehicle: 2010 S550, 2005 S500 4-Matic (sold), 1978 450SL "Christine" (sold)
Location: Tampa, Florida
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 79 Post(s)
RE: 2001 S500 Airmatic Problem
Frank is correct.
A leak in the system will cause the compressor to cycle on frequently, wearing it out.
The compressor relay has also been known to stick "on" causing premature compressor failure, without a leak (I don't know if this condition can cause overpressure that would create a leak, or if there is some kind of pressure relief that would prevent it). This is a common problem, and if it is the cause, I'd make some noise about it. Depending on the mileage and maintenance record of the car, Mercedes may offer "customer assistance" in the repair if the car is out of warranty (including extended warranty).
In any case, it seems that one problem or the other has caused the compressor to fail.
2005 S500 4-Matic