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

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.

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Average mileage: 100,000 (100,000–100,000)
3 model years affected: 2003, 2004, 2005
4 people reported this problem
1 person shared problem details
Oil leak at transmission connector... Replaced bushing and wire connector
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