Mercedes-Benz CLK500 Problem Report
Mercedes-Benz CLK500 Transmission May Leak Fluid and Damage Control Module
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. At that point, a new harness and control module may be necessary to correct this problem.
The transmission control module got damaged (shorted)by transmission fluid leak. Has to be replaced. - Visitor
Tranny leaking fluid on harness and into control module. Just found out that there was no tranny fluid as it wasnt shifting. Shop says that they only solution is to have it checked and cleaned on a regular basis. Is there a permanent solution? - thesaad
Advised by dealer to fix.
Declined. - Visitor
The trasmission started going into nuteral when downshifting and would sometimes upshift slowly. The Check Engine light came one, the went off a few times. Took the car into the local MB dealer who pulled some codes indicating tranny problems. When they checked they found the fluid leak and fluid wicking into the module shorting it out. Est. repair is $1,500.
This leak was spotted by another shop about 50K miles ago and supposedly fixed, guess they didn't do a very good job of it.
It's hard to catch a tranny fluid leak since this car doesn't have any way for the owner to accurately check the transmission fluid level. Thanks MB. - Visitor
Delayed shifting from stop to lower gears. No shifting into higher gears, irratic. Came on suddenly - not gradually as one would expect. Took to first mechanic who observed tranny fluid on wire harness between tranny and tranny control module (TCM). No error codes on tranny when checked with computer. Took to MBZ specialist (non dealer). Same observation but could not get codes from MBZ in Germany to reprogram new control module. He suggested take car to dealer. So, I am hopeful it is only the harness and/or TCM.
Has anyone had this experience? what can I expect to pay if this is what the dealer finds? - 05CLK500FL
complaint of leak at wire connector may cause wiring harness to be replaced, never performed and now have almost 250000 miles - Visitor
Repaired seals prior to damage of control module $330 - Visitor
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