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just took my 06 C6 A6 to the dyno after couple of runs the car went crazy, i can turn the traction off but not the active handling, the abs light is on and the car runs in 4th gear it wont shift up or down in S mode, the gear on the heads up display gone crazy it jumps between 2nd 3rd and 4th gear and when rolling it stucks on 4th.
i took it off the dyno and all the traction and abs problems disappered but the trans still on 4th wont shift down or up even on D mode!! i've taken the battery head off for the night and started it again in the morning .. still the same !
just took my 06 C6 A6 to the dyno after couple of runs the car went crazy, i can turn the traction off but not the active handling, the abs light is on and the car runs in 4th gear it wont shift up or down in S mode, the gear on the heads up display gone crazy it jumps between 2nd 3rd and 4th gear and when rolling it stucks on 4th.
i took it off the dyno and all the traction and abs problems disappered but the trans still on 4th wont shift down or up even on D mode!! i've taken the battery head off for the night and started it again in the morning .. still the same !
Take it to a dealer, they can scan the TCM, and clear any codes that are in the TCM. That should take care of your problem.