1993 Mercedes-Benz S 500 Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 1993 Mercedes-Benz S 500, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Electrical2100.0%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
VEHICLE STALLED TO DEAD THREE TIME, ONE ON AN INTERSECTION. SYMPTONS STARTED WITH ROUGH IDLE, MISFIRING AND STALL. AFTER INSPECTION OF UPPER WIRING HARNESS (RECOMMENDED BY A FRIEND) THE CONCLUSION WAS BARE AND DESINTEGRATED WIRES CAUSING SHORT CIRCUITS EVERYWHERE IN THE CAR, PUTTING ME AND MY FAMILY AT RISK. IT IS AN EXPENSIVE REPAIR AND I CAN'T DRIVE THE CAR UNTIL MBUSA GIVES A SOLUTION WHICH I'VE HEARD THEY LOOK LIKE UNAWARE. I OWNED OTHER MERCEDES MODELS AND WE ALWAYS HEAR THAT THIS W140 SERIESWERE THE BEST CAR IN THE WORLD. BUT THIS ISSUE COULD HAVE COST MY LIFE.
WHEN THE ENGINE IS RUNNING AT IDLE, THE ENGINE WILL MISS IN A RANDOM MANNER UNTIL THERE IS A LOUD POP FROM THE RADIO SPEAKER, THE BATTERY LIGHT COMES ON, AND THE ENGINE STOPS. SOMETIMES THE ENGINE WILL CONTINUE TO RUN, CONTINUE TO MISS, UNTIL THE ENGINE EVENTUALLY STOPS. WHEN RUNNING AT SPEED AND THE ENGINE IS UNDER LOAD THERE IS A LOUD POP FROM THE RADIO SPEAKER, THE ENGINE MISSES, BUT THE ENGINE WILL KEEP RUNNING. THE MB DEALER AND AN INDEPENDENT SHOP BOTH INDICATED THE WIRING HARNESS IN THE ENGINE COMPARTMENT WAS DETERIORATED AND NEEDED TO BE REPLACED. AFTER THE HARNESS WAS REPLACED THE CAR OPERATED NORMALLY FOR ROUGHLY SIX MONTHS AND THEN STARTED FAILING IN THE SAME MANNER. ALL CONNECTORS WERE OPENED, CLEANED, AND RECONNECTED. THE CAR AGAIN OPERATED NORMALLY FOR ABOUT THREE MONTH AND HAVE STARTED FAILING IN THE SAME MANNER. AS OF WRITING THIS COMPLAINT, THE CAR IS NOT FUNCTIONING NORMALLY.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .