Would be any button on the MID stuck on 'on' position?
Press them all and see if that's the case.
You might need to take the MID out and check the contacts of each button if from the outside you cannot find the stuck one.
That's what I suspect to cause the problem.

__________________

4.8is 2004 imola red
4.8is 2005 Black on Black - DINAN/2 sold
4.4 2004 X5
2003 330xi
2008 328xi - sold
4.4 2000 X5 - sold