There are 9 owner-reported suspension complaints for the 2004 Mercedes-Benz S-Classin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The dash board lights lose their ability to illuminate the dashboard and the back airbags on the suspension keep deflating
SUSPENSION PROBLEM
WHILE DRIVING AIRMATIC STRUT SNAPPED HIM HALF ON THE FREEWAY. WHOLE CAR DROPPED AND HAD TO TOW VEHICLE TO SHOP. REPLACED THE AIRMATIC STRUT AND NOW ABS SENSOR CAME ON AND DOESNT GO AWAY. REPLACED SENSOR AND STILL WONT GO AWAY SO NOW I LOST CRUISE CONTROL, BRAKES WEIRD, AND LOST ESP CONTROL WITH HEAVY STEERING. COMMON ISSUE ON THIS VEHICLE WITH THE AIRMATIC SUSPENSION.
THIS VEHICLE OFTEN DROPS LOWER, WHILE IN MOTION. THIS IS HAZARDOUS! I HAVE HAD THIS AIRMATIC AIR SUSPENSION SYSTEM REPAIRED THREE TIMES ON THIS VEHICLE WITHIN THE LAST THREE YEARS, AND IT APPEARS THIS IS ONE PROBLEM THAT MERCEDES BENZ REFUSES TO CORRECT. IN MY LAST S430, I HAD THE SAME ISSUE, AND HAD TO PAY HUGE AMOUNTS TO FIX THE PROBLEMS. I FEEL NO ONE IS DOING ANYTHING TO GET MERCEDES BENZ TO FIX THIS ONGOING SAFETY ISSUE. I WILL LIKE NHTSA TO GET MERCEDES BENZ TO TAKE RESPONSIBILITY FOR THESE ONGOING DEFECTS.
ISSUES WITH AIRMATIC SYSTEM. WILL NOT FUNCTION PROPERLY. CAR IS SITTING TOO LOW TO THE GROUND TO DRIVE SAFELY. ISSUES WITH PUMP. *TR
AIR SUSPENSION FAILED DUE TO CRACKS IN THE TOP OF THE FRONT STRUTS. THIS LEAD TO LOSS OF AIR PRESSURE, OVERLOAD AND FAILURE OF THE AIR COMPRESSOR. THE VEHICLE IS UNSAFE TO DRIVE AS THE FRONT OF THE CAR COULD NO LONGER BE SAFELY SUPPORTED BY THE SUSPENSION. *TR
IN 12-06 I BOUGHT A 2004 MERCEDES BENZ S500. SINCE THAN I TOOK THE CAR BACK THE DEALER MORE TEN TIMES THE LATEST WAS 1-09 FOR THE SAME REASON THE AIR MATIC DEFECTED ORCOMPRESSURE LEAK,PRESSURE SENSOR MALFUNCTION,AIR MATIC VALVE BLOCK DEFECTIVE. SOME TIME THEY FOUND THE AIR MATIC COMPRESSORS W/ EXTERNAL LEAK CAUSE THE SUSPENSION TO BE LOW. IN MAY 2008 FOR LEAK IN THE COMPRESSOR THEY TOLD ME IT WAS FIXED. AGAIN IN JULY 2008 AIR MATIC COMPRESSOR AGAIN LEAK. AUG 2008 THEY TOLD ME IT RELAY DEFECTIVE THE AIRMATIC PUMP WAS STUCK AND THE AIRMATIC PUMP DID NOT PASS PNUMATIC TEST AGAIN THEY TOLD ME THE DEALER CHARGED $821.03.JAN2009 AIRMATIC VALVE BLOCK DEFECTIVE AGAIN CHARGED $765.89.I THINK SOME COMPLETELY WRONG WITH THIS CAR, BUT THE DEALER AND THE HEAD OF THE MERCEDES BENZ DO NOT WANT TO HEAR ME THE CAR COST ME ALOT OF MONEYS AND EVERY OTHER MONTH I MUST FIND MONEY TO FIXED THE SAME THING OVER AND OVER AGAIN THAT NOT FAIR. *TR
ACTIVE BODY CONTROL LEAKAGE ALIGNMENT AND STRUT ISSUES DRIVE BELOW 30 MILES HOURS WHEN NOTIFICATION APPEARS UNABLE TO SOLVE PROBLEM FOR YEARS. WAS NOT WARE OF PROBLEM UNTIL 10/20/14. *TR
THE FRONT SUSPENSION FALLS DOWN DURING COLD WEATHER, CAUSING THE FRONT OF THE VEHICLE TO SINK DOWN ON THE WHEELS. A WARNING LIGHT TURNS ON INFORMING THE DRIVER TO STOP THE VEHICLE. MANUFACTURER WAS CONTACTED BY OWNER.*AK
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026