2015 Model S - center screen will not reboot. Have tried holding down the scroll buttons in many different combinations - 15 seconds to five minutes in range, with and without the brake on, before and after rebooting the instrument panel, etc. I've charged the car, no change. I've driven the car, no change. Can't connect to the car via my phone so can't control it that way. Can't power down the car because I can't get the center console screen.
Instrument panel above the steering wheel will reboot just fine.