Likewise, mine did it a few times every now and then but then sorted itself so I just put it down to gremlins at the time. But it's pretty much constant now.Mine did that for a bit a while ago but then stopped and has been normal since!
Not sure if it'll make any difference but someone over on Bimmerpost said to try rebooting the iDrive as that worked for them.



Lucky for me the wife really liked too so I'm not tempted to wait for a few months whilst I get a bit more together and go for that!