Transmission May Leak Fluid and Damage Control Module on Mercedes-Benz C43 AMG

Problem Description and Possible Solution

The electrical connector at the automatic transmission may leak fluid. Over time leaking fluid could migrate through the wiring harness and damage the transmission control module. If that happens a new harness and control module may be necessary to correct the problem.

Problem Data
RepairPal Verified
Average mileage: 95,000 (50,000–140,000)
3 model years affected: 1998, 1999, 2000
6 people reported this problem
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Noticed transmission fluid leaking out of transmission wire connector during changing of the transmission fluid.
Replaced wire connector $20.
Transmission fluid must be changed at least every 50,000 miles $600.