How to mate new tcm to ecu?
My A6 4.2 was stuck in limp mode so I ended up buying a new tcm. Before installing it I changed the output speed sensor + harness and it took the car out of limp mode. It is now stuck in 1st gear. I figured I would give the new tcm a shot since I have it on hand. I have heard I have to recode the ecu to accept the new tcm. Is this true? Can I do this using one of the cheap vag-com cables?
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Only Audi can do it, or at least that is the case with my B6 A4 with CVT. My very experienced VW/Audi mechanic with years of experience working at Audi, and a real Ross Tech cant do it. He was told only Audi can. Have to have some code that only dealerships have.
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