1993 Mercedes-Benz 300 electrical system problems
24 owner complaints filed with NHTSA name the electrical system on the 1993 Mercedes-Benz 300 — 62% of all complaints for this model year.
What owners report
“The engine harness problem after owning my car since 1993. It is clear that the engine harness was made with biodegradable material which has now lost it's plastic covering over the metal wires. With wires exposed after the engine harness degration, the car which was supposed to last me for a long…”
filed Apr 10, 2013
“My research indicate that this engine wiring harness problem is an ongoing issue for many mercedes benz, 300 e, and 300se cars with the twin cam engines made between the years of 1993-1995. Not only I am unable to have routine maintenance done, but I am told by the repair facility that this…”
filed Aug 6, 2011
“During normal operation of my vehicle, the vehicle began to act erratically. At start, the vehicle would not normally idle; instead it lurched between 500-1500 rpm. During operation, at a random points, the vehicle would not respond to pressing the gas, instead surging power until I stop and idle for a minute. It…”
filed Apr 27, 2011
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Electrical System problems in other 300 years
| Year | Reports | Share |
|---|---|---|
| 1992 300 | 5 | 23% |
| 1991 300 | 3 | 16% |
| 1987 300 | 1 | 3% |
Other reported problem areas on the 1993 Mercedes-Benz 300
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.