Transmission May Leak Fluid and Damage Control Module on Mercedes-Benz CLK430

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: 97,039 (44,024–137,134)
5 model years affected: 1999, 2000, 2001, 2002, more2003
9 people reported this problem
Viewing 1 - 3 of 3 comments
I attempted to replace the connector and install the second o-ring, but the part was not truly interchangeable. Some advice to use WD-40 or other silicon lubricant to clean the harness and control module did not work. Each time I take it for service, I attempt to guilt the manager to fix it for free, as it is caused by a poor decision to use only one o-ring, instead of the two they should have. You can imagine how successful that strategy is...
I was told by my mechanic that I have a transmission leak and if the fluids gets into the electrical connector. May caused major problems with a high expense.