Join Date: Dec 2005
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I have grave doubts as to whether the dash can cause this fault too,we've never had it reported before.
I would seriously take other peoples advice and have a look at the wiring on the rear of the vehicle.It sounds as if you either have a bad earth connection or wires chaffing as they go into the tailgate.
I'd rather push my Alfa than drive a BMW....
Currently in Lagdti's garage:
2004 Saab 9-5 HOT Aero and a 2001 Audi A3 1.8 Turbo