NHTSA Complaint #11551609 — 2021 TESLA MODEL 3

While drive after dark on a four-lane city road with no breakdown lane my vehicle alerted me of a problem and I should slow down. About five second later the car came to a stop and placed itself in park in the right-hand lane with traffic coming up behind me at 50 MPH. I was unable to locate the emergency flasher so I turned on the turn signal (I later found out the emergency flasher was located on the ceiling with white marking which were not visible in the dark). With the right turn blinker on I attempted to exit the vehicle but when I did, the turn signal turned off. This left me with a choice to leave a dark vehicle in the right-hand lane with moderate traffic or sit inside keeping the lights and signals on. No accident resulted but this was a very dangerous situation. The failure was a power converter which led to the disabling of both the front and rear drive motors. I was also unable to put the car in neutral and move it as far right as possible. I would have expected this type of failure to at least turn on the emergency flashers and give the driver the option of placing the car in neutral so it could be moved off the road. When i bought the car I specifically ordered the one with front an rear drive motors so failure of one would not completely shut down the vehicle. Seem like this power converter is a single point failure which leave the operator and other vehicles in a very dangerous situation.