Mercedes-Benz E320 CDI Problem Report

Mercedes-Benz E320 CDI Transmission May Leak Fluid and Damage Control Module

(4 reports)

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.

I've been struggling to get a recurring transmission problem fixed for over 2 years. First the tranny was reconditioned at 88,000. Since then, there have been elusive shifting problems. Two different repair shops (including the dealer) told me I was imagining things. Finally, after leaving the car for them to drive for a week, they agreed. Now I've been without the car for 3 1/2 months as they struggle to diagnose it. Was told there was oil leakage that damaged the module, but after replacing it with 3 different new ones, they say the module is fine (not sure that's true). Instead they have replaced the torque converter, but I'm still waiting to get the car back . . . -
Leak of trans fluid trough electrical connector. -
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