I hope someone can help me..
I have a 98 ML320 that is about to kill me.
Awhile back the car would go into limp home mode after running and was at operating temps, especially after stopping. Then it would clear and run OK after it cooled.
I read the codes in the OBD and it gave me p0700 trans control failure.
I removed the TCU and cleaned up the connections and was able to get the problem cleared (no Codes or CEL) then the unit failed again and I was not able to get it working again. Still has P0700 and then P1747 (can failure) I was able to find a direct replacement (same numbers) and installed the unit. And this is where I am today.
I still get a P0700 code, and now I dont have the Park interlock or reverse interlock. I have been trying to determine if there is either a fuse or any overload protection for the TCU and where it is located. I do not have a wiring diagram and have hit a dead end.
Any help would be appreciated. Thanks