A lot of silliness has been tossed around about Teslas in this thread so let's be clear about how they work. A Tesla vehicle have two main independent systems:
- The "car" that operates the motors, blinkers, shifting, Autopilot, etc. It also supplies standard readouts via OBD that you can monitor independently e.g. with a phone app. As far as I'm aware, it is impossible to turn this machine off except when the car is stationary, in park, and the brake is fully pressed (or by disconnecting the 400V battery leads under the rear seat).
- The infotainment computer is a small Linux machine that displays the map, speedometer, music, plays the sound of the blinkers through the speakers, and random other stuff. This system can be reset at any time by holding the two scroll wheels.
There are valid things to criticize about this setup e.g. by not having a standard fallback display of speedo, but you can still read speed from OBD at all times. And Tesla has broken things in OTA updates before, but their rollouts are heavily staged. The last major revert I can remember was FSD beta 10.3 in 2021 back when it had reached a few 10s of testers.
