Yesterday, the screen froze up, pressing anything did nothing. The "home" button next to the volume control also was inoperative. After shutting down the car, the screen remained lit up.
As I was home, and had other stuff to do, I figured I'd leave it sit, then disconnect the 12-volt battery so as to reboot the system. (dunno if it'd work, but it sounded good). After leaving it for just a few minutes, I returned to the car and found the screen dark. Pressed the 'Go' button and the car booted up normally; cycled it a couple of times and all was well. Went to supper later and it was still OK.
There WAS an unusual sequence when leaving the restaurant after lunch: the RR door was ajar, according to the screen. I stopped, put it in Park, the RR passenger opened and closed his door, and away we went. It was sometime after that that I noticed the frozen screen.
Anyone else ever have this happen? I was NOT looking forward to taking it to the dealer, he's 20 miles away and this is almost certainly the only Bolt he's sold.