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Mercedes-Benz C320 4MATIC Problems

Transmission May Leak Fluid and Damage Control Module on Mercedes-Benz C320 4MATIC

Problem Description and Possible Solution

The electrical connector at the automatic transmission may leak fluid into the wiring harness. If not repaired, the oil will migrate through the wiring harness and damage the transmission control module. A new harness and control module may be necessary to correct this problem.

(4 people reported this problem)

Mercedes-Benz C320 4MATIC Vehicles With This Problem

RepairPal Verified
Average mileage: 100,000 (100,000–100,000)
3 model years affected: 2003, 2004, 2005
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