Electrical Issues Due to Degraded Engine Wiring Harness on Mercedes-Benz 500SL

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 100,000 (100,000–100,000)
4 model years affected: 1990, 1991, 1992, 1993
6 people reported this problem
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wireing insulation falling of where a/c wiring passes neer eng on driver side and sensors wireing doing same on passenger side also