Mercedes S-Class W221 Air Suspension Compressor Failure
The Airmatic air suspension compressor on W221 S-Class fails progressively, causing the car to sit low on one or more corners, particularly after overnight standing. The compressor motor burns out from continuous operation due to leaking air bags or lines. Replacement compressor costs £250-600; always locate and fix the leak source first or the new unit will fail again.
🔍 Symptoms
⚙️ Possible Causes
Repair / Solution
No confirmed fixes yet. Share yours below.
⚠️ Wrong Diagnosis?
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Mercedes-Benz S-Class 2005 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
🚗 More About This Vehicle
Help other owners by sharing your experience.
Your real-world fix helps thousands of drivers worldwide. Takes 2 minutes.