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Electrical systemPart report

1993 Mercedes-Benz 500 Electrical system Problems

Complaints
17about this part
Share
74%of 23 total for the year
Median mileage
100,000miles
Trend
StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.

NHTSA recorded 17 complaints about the electrical system of the 1993 Mercedes-Benz 500, 74% of the 23 complaints for this model year. Where a mileage was given, the median is 100,000 miles. 1 a fire, according to the filers.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“The engine/fuel injection wiring harness of my 1993 Mercedes-Benz 500e (64,000 miles), has cracked insulation throughout and is beginning to short out, with the risk of causing dangerous engine malfunction, and even fire inside my engine compartment. I have read many reports of other Mercedes-Benz cars of the same age range having the exact same issue. This is a know issue with mercedes that they refuse to recall.”

NHTSA complaint #10118292, filed 2005-12, 60,000 miles

“My mechanic told me on 11/3/2007 that the wire harness on my 1993 mercedes 500 sel could cause fire or death to my family and that mercedes benz u.s.a. Knows about the faults in the wire harness and knows the people are in danger and have yet to do a recall on years (1992 through 1996) please help us get a recall in the wire harness before people get burnt or die these wires just fall apart and then touch each other and that is when the danger starts, this really is a serious and dangerous situation and we are asking for your help. Thank you!”

NHTSA complaint #10208221, filed 2007-11, 100,000 miles

“Wire harness defect causing short in system smoke inside the vehicle while driving on a county road immediately pulled over cutting other drivers off just to get vehicle in a safe and secured location.”

NHTSA complaint #10825979, filed 2016-02, 217,000 miles

“Shorting in electrical systems causing failures of ignition and computer systems intermittently. Root cause analysis show that failure of the sheathing and materials of the wiring harnesses cause corruption of electrical circuits and require complete replacement of harnesses due to poor quality materials. Complete replacement of the wiring harnesses was completed in july of 2005.”

NHTSA complaint #10166496, filed 2006-08, 198,788 miles

“Shorting in electrical systems causing failures of ignition and computer systems intermittently. Root cause analysis show that failure of the sheathing and materials of the wiring harnesses cause corruption of electrical circuits and require complete replacement of harnesses due to poor quality materials.”

NHTSA complaint #10166495, filed 2006-08, 230,040 miles

Electrical system: other model years

YearComplaintsShare of year
200319%
2000222%
1995450%
19946100%
19931774%
19921387%

Other parts of the 1993 Mercedes-Benz 500

Brakes
1 complaints
Engine cooling
1 complaints
Other or unknown
1 complaints
Seat belts
1 complaints
Transmission and drivetrain
1 complaints
Vehicle speed control
1 complaints

← All problems reported for the 1993 Mercedes-Benz 500

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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