Does any one else have factory fit sat nav on an A2? Mine has failed (out of warranty), and will not let me get beyond the destination screen. The push button which controls it still works to change the radio station, so the fault appears to be somewhere in the sat nav itself, and is not mechanical. Audi qoute £1000 to replace the whole unit. Anyone have any idea how to get this repaired at a reasonable price, rather than replaced? James.