Problem Description and Possible Solution
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.
Average mileage: 84,486 (27,000–124,500)
17 people reported this problem
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.
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...