So there I sit in house ..my wife just left for a ride in the new A4...and I pick up my cell to call her because she forgot something.....phone says its dialing and connected...i hear nothing..not even my own voice...poor wife is still in the driveway adjusting the mirrors etc....and can't understand why the car says "the number is being dialed" and then HER cell phone rings..and she hears silence :-))

The moral of the story...remember to disable BT on your phone if the car is sitting in the driveway and running ;-)