There are 4 owner-reported electrical system complaints for the 2011 Mercedes-Benz S-Classin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL* THE CONTACT OWNS A 2011 MERCEDES-BENZ S400. THE CONTACT NOTICED A FLASHING INDICATOR ON THE INSTRUMENT PANEL RELATED TO THE VEHICLE OVERHEATING. A SECOND UNKNOWN WARNING INDICATOR ALSO ILLUMINATED. THE DEALER (PARK PLACE MOTORCARS MERCEDES-BENZ ARLINGTON, 4201 BELTWAY PL, ARLINGTON, TX 76018, 817-807-4800) DIAGNOSED THAT OIL LEAKED INTO A MODULE AND DIAGNOSTIC TESTING WAS NEEDED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS CONTACTED. THE VIN WAS NOT AVAILABLE. THE APPROXIMATE FAILURE MILEAGE WAS 122,000.
TL* THE CONTACT OWNS A 2011 MERCEDES-BENZ S400. WHILE DRIVING AT AN UNKNOWN SPEED, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF TAMPA (4400 N DALE MABRY HWY, TAMPA, FL 33614) WHERE IT WAS DIAGNOSED THAT THE POWER ELECTRONIC CONTROL MODULE FAILED. THE VEHICLE WAS NOT REPAIRED. THE CONTACT REFERENCED TSB NUMBER: 10050865 (ELECTRICAL AND AIR CONDITIONING), BUT THE VEHICLE HAD ALREADY BEEN REPAIRED PER THE SERVICE BULLETIN. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND INFORMED THE CONTACT THAT HE WOULD BE RESPONSIBLE FOR THE REPAIR COST. THE FAILURE MILEAGE WAS 123,000. THE VIN WAS NOT AVAILABLE.
TL* THE CONTACT OWNS A 2011 MERCEDES-BENZ S63. WHILE THE VEHICLE WAS PARKED, THE CONTACT WAS INFORMED THAT THE VEHICLE WAS ON FIRE. THE CONTACT STATED THAT THE FIRE ORIGINATED FROM THE FRONT OF THE VEHICLE. THE FIRE DEPARTMENT EXTINGUISHED THE FIRE AND A FIRE REPORT WAS FILED. THE VEHICLE WAS TOWED TO AN AUTHORIZED MERCEDES BENZ DEALER. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 90,000. ...UPDATED 03/13/17 *BF UPDATED 08/17/2017*JS
TL* THE CONTACT OWNS A 2011 MERCEDES-BENZ S550. WHILE DRIVING 70 MPH, THE VEHICLE ACCELERATED UP TO 110 MPH ON ITS OWN. THE REAR OF THE VEHICLE RATTLED WITHOUT WARNING. ON ANOTHER OCCASION, ALL THE WARNING INDICATORS FAILED TO ILLUMINATE AND THE GPS PROVIDED INCORRECT INFORMATION. THE VEHICLE WAS TAKEN TO A DEALER, BUT THEY COULD NOT DUPLICATE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS UNKNOWN.
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