NHTSA Complaint #11422711 — 2016 TESLA MODEL S

My Tesla Media Control Unit v2 went to a black dark screen while the car was still on. I just put the car in reverse and the instrument cluster and control unit froze, then did 3 cycles of restarts before coming back on. The whole time I had to press the brake pedal because I wasn't sure if the car had been put back into park by default. Should I have released the brake pedal the car may have rolled into the street and caused an accident if the system failed to allow me to depress the break pedal again. Tesla is doing a "remote" diagnostic but is being very secretive and or non-transparent about the cause of the issue. There was no warning and the cluster and media control unit just froze. This has occurred on 2 previous occasions as well, though thankfully those times I was parked and charging the vehicle rather than about to drive. This is extremely unsafe and quite frankly frightening to drive a vehicle that may at any time shut off without warning not allowing me to pull over or avoid a potential collision.