The radio does not behave as expected with the ignition. Does not switch on automatically with the ignition and if it is on before the ignition is switched on, then the ignition switches it off when the engine is turned over to start. Vag com identifies an ignition switch fault. Firstly has anyone else had this problem? and secondly any knowledge about how to change the ignition switch would be a real bonus. Can't find a thread with this specific problem. 5 months out of warranty - wouldn't you know!!! Thanks in anticipation.