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.
Transmission May Leak Fluid and Damage Control Module on Mercedes-Benz ML350
Average mileage: 81,136 (27,000–110,000)
16 people reported this problem
9 people shared problem details
2004 Mercedes-Benz ML350110,000Visitor
ml350 would start first thing in am, but on really hot days (85-90F), car would not start until it cooled down. dealer found that the transmission cable going to the harness mentioned, was wicking the transmission fluid to the trans control module. Heating up and affecting the ability to turn the starter. sounds like a recall item to me. Does anyone know if this is a recall or is in the process of being one.
I was told this is common to replace and considered standard maintainence for the vehicle.
2005 Mercedes-Benz ML35063,250Visitor
Transmission seal leaking .. Due to faulty wire connector on transmission
2003 Mercedes-Benz ML35086,000Visitor
Car overheated and stalled right after having a huge service bill the week before. Power steering was leaking as well.
2006 Mercedes-Benz ML35091,000Visitor
CAn lose power and then must pull over and recycle ignition. Once that is complete it runs fine until the next episode.
2004 Mercedes-Benz ML350Visitor
Down to 44 oz of fluid when found.
2005 Mercedes-Benz ML35027,000Visitor
Leaking @ wire connection at driver side front of trans pan.
I have a transmission connector leak; they said "it has a rubber seal and over time its going to leak" ... they quoted me $240 to fix it.
Problem occurred driving up and down hills. The car could not go past 60mph. Had to stop, turn it off, and restart the engine. Took it in for service and the diagnostic report indicated issue with the TCM. There was transmission oil was found inside the TCM. Will have to replace the TCM and wire harness...
I have not been able to figure out where the leak is exactly, but right after i put more power...
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