If you google idrive rebooting ... you'll find a number of threads on various BMW forums with folks that had similar problems. Seems like the most common problem/fix is having to replace the CCC but there does seem to be a few other potential causes... bad optic cables, bad MOST devices connected to the CCC or low powered/aging batteries. Good luck.
This is why I never get the fancy options... they break.
__________________
/Craig
|