Before i had the turn signal stalk installed my abs and tcs light would occasionally come on. Now they stay on and the brake light flashes. Steering angle can't be set and abs module drops the code after starting the car but takes it before starting. 2001 a6 4.2. Please help

 

when they replaced the stalk did they make sure they did not move the clock spring? if they did then this could cause problems. Is vag giving you any codes?

Boston driver has replaced turn signal stalks before and has done a write up I think there is a link on the Audi world forums. I will try and give you a link