Purchase a control panel from Ebay, after installing everything is working again.

The panel control knob is a vital component since after selections are made the knob unit sends info via I-Bus to each avionic component in the car boot, then info is sent back from each unit to be displayed. Since this selector knob is used so often and can easily go wrong, i'm disgusted BMW have no means of replacing it!! Another way to get thousand of pounds from their customers!!

Regards
Peterloc