Electrical Issues Due to Degraded Engine Wiring Harness on Mercedes-Benz S420

The engine wiring can degrade because the insulating material falls off leaving the bare wire exposed. This can cause many problems depending on which wires are exposed and what they touch.

RepairPal Verified
Average mileage: 137,333 (100,000–165,000)
6 model years affected: 1994, 1995, 1996, 1997, more1998, 1999
10 people reported this problem
2 people shared problem details
Having many issues with car like the climate control, unexpected instrument cluster failure, slight overheating. because the wiring harness has degenerated in the engine compartment. I have been told that car can not be diagnosed with out the wiring harness being replaced first. I was also told that this would be just the beginning of the money pit to fix it. How many hours should I be charged on the replacement of the wiring harness?
2 people like thisFlag inappropiate
Took my car in to replace the starter and was told the insulation around the wiring was degraded and I should get a new wiring harness. It has not caused any problems yet but it is just a matter of time. Estimate was $1,100 to replace the harness.
1 person likes thisFlag inappropiate
Related Items:
what can go bad after I tried to drive this s420 mercedes with degraded engine wires meaning wi...
A coolant leak may develop form the Radiator due to degradation of its plastic components. Repl...
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/...
I can't go over 40 MPH until my ABS & ASR lights come on, then I can drive normal. It started w...
The cooling system hoses may fail unexpectedly. The hoses can look good on the outside, but t...

Related Content