When your iDrive controller knob is possessed an starts spinning on its own then it's time to get a new iDrive controller. The center console will need to be removed and partially disassembled to access the iDrive controller module. You can find a part number and price at http://www.realoem.com
(you will need the last 7 digits of your VIN)
I do not recommend you assume that the answer here directly relates to your BMW.
(you will need the last 7 digits of your VIN)
I do not recommend you assume that the answer here directly relates to your BMW.