Audi Repair Questions? Ask a Mechanic for Answers ASAP
Welcome, I'm Wolfgang, Master Audi Tech.
There is a possibility that when you did the seat you did not disconnect the battery and the code was set.
it may only need a clearing but a scan tool is needed!!
please do let me know and keep me in the loop !! that would be the first thing to see if it is just a stored code or a active code!!