As jbanfie kindly enabled this option for me I attempted to tell the story of an E46 3 series I owned that used to knacker up the final position of the mirror after every dip. Guess what my A6 does now after some dips. Are there grave instructions for use? Should I make sure the mirror has returned to the undipped position before turning off the vehicle for example?

Incidentally, BMW always blamed the problem on Uplands Car Radio who had replaced the dire standard fit speakers, whereas Uplands always blamed BMW, then I sold it.