I've got a 2007 A5 - when I got it the advanced key wasn't working. The boot would open when the car was locked but the doors wouldn't respond. I had error codes for both handles and 03287 - exterior door handle touch sensors, open circuit/short circuit to B+ I replaced the sensors but still have the 03287 - exterior door handle touch sensors, open circuit/short circuit to B+ fault code. If I clear the code, approach the car and put my hand on the handle to open it you can hear the lock doing something and the lights flash, but it's pretty random if it'll open, and after a while it stops working again. Does anyone know what might be causing the fault code?