Hi

Sorry to be opening an old discussion but I am now experiencing what I believe to be a the electrical plate / speed sensor problem with my AT tranny.

Happened on Sunday during a drive through central London. I start the engine and drive and when I accelerate it did does not shift. So I look at the electronic display and it shows 1st gear. I assume that I must have touched the gear stick with my elbow and put it back into D. As I drive I notice that I have no power. I stop and restart the car and have issues starting the car. I get it going and and have power but it will not shift any more. I can't shift manually either. When I get home, I switch off the engine and try starting it, again problems. 1h later starting works fine but obviously still stuck in limp mode.

Next day I take the car to my local garage and there is a small leak from the tranny (the usual place). They check the oil level in the tranny and it was just below the minimum. Fixing the leak and topping up the oil did not solve the problem. Saying that we did not use original equipment to remove the fault codes. I did disconnect the battery for a while but I am not sure that would clear the fault codes.

The code I am getting is P0702 so I call Mister Transmission (suggested elsewhere in the forum as good repair shop) and find out that there should be another fault code there as well. They suggested that this is the electric plate after hearing the symptoms which is what the other posts on the forum suggest as well.

My question is:
Will disconnecting the battery clear the fault codes or does it have to be done by MB / Chrysler equipment? Any other equipment than the original that can clear the fault codes if the disconnecting the battery does not help?
And finally, reading the description, is my deduction that this will most likely be the speed sensor correct?

cheers
Peter