Hi All I've got a 59 plate Black Edition A3 and I'm having a problem with the central locking when inside the car. If I lock the doors with the key fob, then all doors lock correctly. Inside the car, if I press the central locking button on the drivers door, the drivers door will lock but the passengers door will not lock, and the light on the central locking button on the door does not light up. If I'm inside the car, lock the doors with the key fob, put the keys in the ignition and start the car, then the light on the drivers door central locking button will light up, and all of the doors are locked. Any ideas what could be causing this and how I could fix it so that all doors lock when I press the central locking button on the drivers door please?