So out of nowhere my 2021 M3P backup camera failed to engage. This locked out all of the cameras and disabled all of the FSD functionality, and I was on a small road trip (it sucked). I heavily rely on FSD in heavy bumper to bumper freeway traffic. I went to the nearest dealer and they unplugged a main power supply and re-booted the computer, and viola, everything was back to normal. Then it happened again 2 weeks later, and I did the same process and viola, it was back to normal. I called Tesla and they said that they wanted to replace my main computer. So as I write this, my car is in the shop getting the computer replaced. I asked Tesla service advisor for more diagnostic evidence of where exactly the failure is, and he said that they don't know (and won't know). The service advisor said that replacing the computer might fix the issue, or might not - "its a first step in diagnostics". So I confirmed that "per Tesla" there is no definite diagnostically positive result that will ascertain a problem that completely disables the cameras and all FSD functionality (including the free 2021 autopilot features for non-FSD cars). Is anyone else having these issues?