Had center display lock-up last night (only displays blue volt insignia), and no buttons changed anything. Tried 'restarting' car (going into park, hitting power button to turn off, then hitting again to power on) with no change.getting out of the car, locking and unlocking the car ( thinks it's some sort of soft reset) everything went back to normal.
Confirming the "soft reset" really needs to be the following to get it back:
1. power off car (keep key/fob with you)
2. get out of car
3. lock car
4. unlock car
5. get in car
6. power on car