Thread: TCM reset

Most people just clear the adaptions using diagnostics then over time allow the gearbox to re-learn. However to do the job properly a sequence of short accelerations is required, going up 1 gear at a time before stopping and starting again then repeating the whole process multiple times. I have the documented procedure somewhere - I did it in my D4 after its rebuilt gearbox box was refitted.

Well there ya go....maybe I should learn to trust my dealer more..

Try using sport for a few days then return to normality.
The vehicle will adapt/re-learn.
Is there an issue you want fixed that requires the re-set???
Andrew

Andrew,

Good question, and yes there is. I towed my camper without a LED load resister meaning the car didn't know it was there. I've since got the parts to make the load resister and am not going to tow the camper until I assemble it. Since decoupling the camper (2tonne), the gears when slowing down feel a little harsh (actually that's not the right word....they change back a little early making it feel like a sports car)

I was thinking that with a reset that will that.

Dealer said it doesn't matter if the car detects a camper or not it will learn as it goes whereas I've read that the Tcm map changes when it detects a load.

Caine

I would let it sort itself out - it wont take long.

Whack it in sport drive it like you stole it for a week then switch back to D ? If you can