1993 Mercedes-Benz 400 Electrical system Problems
- Complaints
- 6about this part
- Share
- 60%of 10 total for the year
- Median mileage
- 135,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the electrical system of the 1993 Mercedes-Benz 400, 60% of the 10 complaints for this model year. Where a mileage was given, the median is 135,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Hello, recently started having problems with my asr system on my 1993 mb 400e and the service writer told me my wiring harness was faulty,cracked and was turning to dust ! He said if I didn't fix it would cause me serious problems - even possibly an engine fire ! He told me cost to replace the wire harness + labor would be about $ 1080.00. Come to find out tens of thousands of people have this problem. Why don't you folks get mercedes to issue a safety recall !! How many people have to die or get burned alive before you help the public that your supposed to protect !! …”
NHTSA complaint #10160661, filed 2006-06, 176,800 miles“The design and location of the spark plugs causes a very serious safety hazard. In order to replace or inspect the plugs wire harness needed to be unbolted and pushed backwards, wire harness shouldn't be moved. Wire harness shorted out, causing a short out of all components in that circuit.”
NHTSA complaint #10032138, filed 2003-08, 128,000 miles“Engine wiring harness was deteriorated completely causing engine problems,stalling in traffic. It was corrected by buying a new wiring harness. The old part was kept. It is understood by me that the insulation used was biodegradable.”
NHTSA complaint #10158924, filed 2006-06, 111,000 milesElectrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 1993 | 6 | 60% |
| 1992 | 5 | 63% |
Other parts of the 1993 Mercedes-Benz 400
← All problems reported for the 1993 Mercedes-Benz 400
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology