Hi Folks, Just bough an 02 A4 2.5Tdi Quattro the other day. The electrics have a few wee issues. The main one being the central locking. Went to Tesco tonight and the car wouldn't lock with the fob. Tried to lock it with the key and the lock just turns 90 degrees left and right but does not open or close doors. Got home and put a new battery in the fob, and central locking works again. Put old battery back in and it's still working!! So basically 2 questions - Why does the door lock do nothing, and why did taking the battery out and putting it back in fix it? Will post pictures up on the welcome thread as soon as its clean.