Is it possible to reboot the i-drive system? 07 x5 4.8 Ccc system
 

Does anyone know how to? I’ve tried the volume button for 30 secs. I’ve even tried the eject and volume button. Reason is I don’t think my adaptive drive system is working. There are no warning lights or anything. On/off the sport button is indicated but I just don’t feel any differences. Please advise, thank you.