1994 Mercedes Benz S CLASS: complaints, problems and recalls
Explore the records behind recurring owner reports.
Key facts
12 owner complaints analyzed
0 distinct recall campaigns
129,750 mi median reported failure mileage
Scope: 1994 model year. Data snapshot: . 10 complaints include usable failure mileage.
Most common problems
Electrical System is the most frequently named component, appearing in 8 of 12 complaints (66.7%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Electrical and battery issues | 8 | 66.7% |
| Engine operation | 1 | 8.3% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Electrical System | 8 |
| Electrical System:Wiring | 3 |
| Electrical System: Instrument Cluster/Panel | 1 |
| Electrical System:Wiring:Front Underhood | 1 |
| Suspension:Rear | 1 |
Electrical System: 8; Electrical System:Wiring: 3; Electrical System: Instrument Cluster/Panel: 1; Electrical System:Wiring:Front Underhood: 1; Suspension:Rear: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 0 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 1 |
| 75,000 to 99,999 | 3 |
| 100,000 to 149,999 | 4 |
| 150,000 and above | 2 |
Under 25,000: 0; 25,000 to 49,999: 0; 50,000 to 74,999: 1; 75,000 to 99,999: 3; 100,000 to 149,999: 4; 150,000 and above: 2
100,000 to 149,999 miles has the most reports with usable mileage (4). 2 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2006 | 1 |
| 2007 | 3 |
| 2008 | 4 |
| 2009 | 2 |
| 2010 | 2 |
2006: 1; 2007: 3; 2008: 4; 2009: 2; 2010: 2
Pattern summary
Electrical System leads the component reports. Electrical and battery issues appears in 8 complaint narratives. Engine operation appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Examples from the source records
Examples provide context, not a representative sample or a verified diagnosis.
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 10235044 · 2008-07-20 (July 20, 2008)
I HAVE A 1994 MERCEDES BENZ S600 THE CAR IS IN GOOD SHAPE BUT IT START STALLING ONCE I WAS PULLING OUT IN TRAFFIC I WAS ALMOST A GONER AND THE PROBLEM KEPT OCCURRING AND THEN I TOOK IT IN TO A MB MECHANIC TO FIND OUT WHAT'S GOING ON AND IT HAD MANY TROUBLE CODES BUT THE PROBLEM WAS WITH THE WIRE HARNESS IT WAS COMING A PART AND CAUSING SHORTS IN FUEL INJECTION SYSTEM THIS SHOULD HAVE BEEN A RECALL WHEN I FOUND OUT THE NUMBER OF PEOPLE WITH THE SAME PROBLEM. *TR
Owner-reported narrative. 155,000 miles reported. Look up ODI 10235044 at NHTSA ↗
Owner report 10236311 · 2008-07-29 (July 29, 2008)
ENGINE WIRE HARNESS IS CORRODED CAUSING SEVERE MECHANICAL PROBLEMS. *TR
Owner-reported narrative. 359,000 miles reported. Look up ODI 10236311 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 ↗
Owner report 10248926 · 2008-11-16 (November 16, 2008)
I OWN A 1994 MERCEDES S600 WITH V12 ENGINE. THE WIRING HARNESS ON THE ENGINE HAS DETERIORATED TO THE POINT THAT IT IS A HAZARD TO DRIVE ON THE HIGHWAY NOT ONLY FOR THE SAFETY OF MY FAMILY BUT TO THE GENERAL PUBLIC, IT IS A FIRE READY TO BURN AT ANY MOMENT, I UNDERSTAND THAT MERCEDES WILL NOT ADMIT THE PROBLEM AND HAS REFUSED TO CORRECT EVEN THOUGH OVER 500 COMPLAINTS HAVE BEEN FILED. THIS IS A COMMON PROBLEM ON '94 THROUGH '96 S MODELS. *TR
Owner-reported narrative. Look up ODI 10248926 at NHTSA ↗
Recall history
0 distinct campaigns affect this selection. Announcement dates below are different from vehicle model years. A campaign may cover multiple years.
No recall campaigns are recorded in this snapshot.