My friend's 2010 Audi S5's passenger seat isn't working. it won't move forward, it won't move backwards, it won't lay back either. how much would it cost to fix this? its automatic one. not the handle that you Vag 12.12.

 

Before spending any money on a repair, check the fuse panels. You should be able to look up what fuse may run that circuit in the Owner Manual of the car. Since nothing on the seat is working, it leads me to believe the fuse (or relay) is not working. Also check under the seat and make sure the electrical connections to the sear are actually fully connected.