Electrical Issues Due to Degraded Engine Wiring Harness on Mercedes-Benz S320

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.

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Average mileage: 105,221 (60,000–145,549)
6 model years affected: 1994, 1995, 1996, 1997, more1998, 1999
13 people reported this problem
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Viewing 1 - 7 of 7 problem details
1996 Mercedes-Benz S320 80,000 mi,
Engine cuts out while driving. Must be restarted.
1996 Mercedes-Benz S320 95,000 mi,
Wiring insulation degrades and bare wires exposed leading to shorts in various electrical components
1995 Mercedes-Benz S320 100,000 mi,
deteriorated wire insulation causing drivebavility issues replaced with new wire harnnes
Mass air sensor meter harness is falling apart.
Caused melted wires and shorting of mirror and fuse box All replaced
1995 Mercedes-Benz S320 60,000 mi,
Running rough. Had to replace wiring harness.
Wiring harness decayed and needed replacement