Mercedes Benz S CLASS electrical problems
46 complaint narratives mention electrical terms.
Key facts
270 owner complaints analyzed
11 distinct recall campaigns
81,000 mi median reported failure mileage
Scope: 1994 to 2012 model years. Data snapshot: . 219 complaints include usable failure mileage.
Electrical and battery issues evidence
46 of 270 complaints match this topic (17.0%). The keyword filter can include complaints that mention a transmission without reporting its failure. View matching rules.
Owner report 10159330 · 2006-06-08 (June 8, 2006)
ENGINE HARNESS, BODY HARNESS AND MASS AIR SENSOR FAILED DUE TO DETERIOATION OF WIRING HARNESS. *JB
Owner-reported narrative. 129,500 miles reported. Look up ODI 10159330 at NHTSA ↗
Owner report 10177675 · 2007-01-03 (January 3, 2007)
ENGINE WIRING HARNESS FAILURE, DETERIORATION DUE TO SUBSTANDARD WIRING INSULATION FOR ENGINE ENVIRONMENT (HEAT, ETC). WIRING SUBSTANDARD WHEN CONSIDERING THE ORIGINAL EXPENSE FOR THESE "QUALITY VEHICLES". MERCEDES SHOULD GOODWILL THE EXPENSE FOR HARNESS REPLACEMENTS AND STAND UP FOR THEIR PRODUCTS! ALTHOUGH THIS "LUXURY" MERCEDES IS A 1994 S-420, IT IS ""AS NEW" AND HAS ALWAYS BEEN MERCEDES"PROFESSIONALLY MAINTAINED! THE MERCEDES ENGINEER'S LET US (THE CONSUMERS) DOWN! *NM
Owner-reported narrative. 133,000 miles reported. Look up ODI 10177675 at NHTSA ↗
Owner report 10208707 · 2007-11-12 (November 12, 2007)
ENGINE RUNS ERRATIC, VARIOUS ELECTRICAL MALFUNCTIONS INCLUDING TEMP GAUGE, SRS, FUEL INJECTION. CAR SOMETIMES WILL NOT START AND OTHERS STARTS IMMEDIATELY. REPAIR SHOP SAYS ENGINE WIRING HARNESS NEEDS REPLACING. *TR
Owner-reported narrative. 53,613 miles reported. Look up ODI 10208707 at NHTSA ↗
Owner report 10209018 · 2007-11-15 (November 15, 2007)
TL*THE CONTACT OWNS A 1994 MERCEDES BENZ S500. THE CONTACT STATED THAT THE ENGINE WIRING HARNESS IS DECAYING AND THE WIRES ARE SHORTING. AS A RESULT, THE ASR IS ENGAGED, WHICH REMOVES THE THROTTLE CONTROL FROM THE VEHICLE. WHILE DRIVING APPROXIMATELY 70 MPH, THE ASR LIGHT ILLUMINATED AND THE VEHICLE DECELERATED ON ITS OWN. THE FAILURE ALMOST CAUSED THE CONTACT TO BE REAR ENDED BY ANOTHER VEHICLE. THE VEHICLE WAS TAKEN TO THE SHOP A FEW TIMES, BUT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE FAILURE MILEAGE WAS 95,000 AND CURRENT …
Owner-reported narrative. 95,000 miles reported. Look up ODI 10209018 at NHTSA ↗
Owner report 10236564 · 2008-07-31 (July 31, 2008)
TWO REPUTABLE INDEPENDENT MERCEDES MECHANICS INFORMED ME THAT THE ENGINE WIRING HARNESS INSULATION IN MY 1994 S420 IS DECAYING WHICH MAY HAVE CAUSED MY LH CONTROL UNIT, AND M.A.F TO FAIL TO MALFUNCTION AND THIS PROBLEM IS PREVALENT IN MERCEDES VEHICLES MADE FROM 1991-1996. THERE SHOULD BE A RECALL ISSUED FOR THIS PART BEFORE MORE SERIOUS EVENTS OCCUR DUE TO THE FLAW IN MERCEDES MANUFACTURING PROCESS FROM 1991-1996 . *AK *TR
Owner-reported narrative. 96,700 miles reported. Look up ODI 10236564 at NHTSA ↗