1995 Mercedes-Benz S420 Electrical system Problems
- Complaints
- 4about this part
- Share
- 80%of 5 total for the year
- Median mileage
- 134,178miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the electrical system of the 1995 Mercedes-Benz S420, 80% of the 5 complaints for this model year. Where a mileage was given, the median is 134,178 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.
“Throttle body wire harness went bad and was on interstate and could not do speed limit and nearly got demolished by a semi tractor trailer. After a horrible expense I now find out the wiring harness for the car is bad as well. Well done mercedes benz you have endangered my family's lives with your sub standard business practice. You should be forced to recall and repair all safety issues.”
NHTSA complaint #10902985, filed 2016-09, 98,356 miles“I have taken my 95 S420 to two dealer locations because of the disintegrating engine wiring harness. They all claim that they never heard of it. The dealer in nanuet, ny tells me that they cannot help me because I didn't have every maintenance done through their dealership. I must say, from all the dealerships I've been to... Mercedes dealerships treat people with older cars like garbage. Anyways, the problem started when the car started to run rough. I was driving home and the car stalled at an intersection. So embarrassing, but glad I didn't cause an accident. So I tow the car to a shop. …”
NHTSA complaint #10807249, filed 2015-11, 170,000 miles“Electrical wiring harness using soy based insulation degrades thereby allowing wires to spontaneous and/ or intermittent shorts. This has caused extremely dangerous driving situations. Very difficult to troubleshoot unless and until one discovers insulation failure. This has been and is widely known to be a problem with this era of cars. Extremely bad engineering decisions were made. Very serious and potentially dangerous conditions. Mercedes should be held accountable for malfeasant and a recall should have been made. …”
NHTSA complaint #10948416, filed 2017-01, 210,000 miles“The contact owns a 1996 mercedes benz S420 (n/a). The contact stated that the key fob failed to unlock the doors. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 88,000. Updated 03/30/15 updated 10/20/2015”
NHTSA complaint #10680073, filed 2015-01, 88,000 milesRelated service bulletins
- 10186141Dec 10, 2020NTG5.5: Incorrect time shown on instrument cluster, COMAND display, and analog clock
- 10135604Mar 31, 2015Vehicle cannot be opened via Keyless-Go and radio remote control
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 1995 | 4 | 80% |
Other parts of the 1995 Mercedes-Benz S420
1 complaintsEngine
1 complaintsEquipment
1 complaintsFuel system
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 1995 Mercedes-Benz S420
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