2020 Toyota Highlander brakes problems

I was at a stop sign in my 2020 highlander waiting to turn left onto a busy road. Upon turning left onto pa state highway 999, the highlander engine turned off and the steering wheel was "locked" into a left position. This caused the car to continue turning into the opposing left lane resulting in a head-on collision with an on-coming car. With the engine turned off there was no power steering, no brakes, and no way to unlock the steering wheel.

The contact owns a 2020 Toyota Highlander. The contact stated that while the vehicle was idling or parked, the engine would suddenly seize. The failure occurred intermittently. The check engine warning light illuminated with a message that the brakes were enabled. The contact restarted the vehicle several times before the vehicle operated as needed. The vehicle had been taken to the dealer 3 times however, the dealer was unable to diagnose the vehicle. The vehicle was not repaired.