It's reset for now, although the side cameras still take a bit to load after startup. I did make an appointment with service, which is a little bit more than a week out. If it continues to be alright, I'll cancel my appointment.
For me, I ended up having the entire GPU replaced under warranty. Initial diagnostic was that it was software but later, when it persisted, even when I was picking up the car, it ended up being replaced.
This just happened to me today. Everything stopped working (all cameras and Navigation). After two hard resets still nothing. I drove about 30 min and it slowly came back. Will try the battery trick next time. Thank you
The same GPS failure and nonfunctional backup camera just happened to my 2021 Model 3.
From this thread and on google it looks like the same issue has been happening since 2018, at least.
Most people just needed a hard reset (unplug the 12v battery). Others needed Tesla to help in some way.
Some just happened once. Others happened multiple times within a few days.
@Tronguy used this method to resolve:
one way to solve this is:
Turn off all the autopilot options.
two-wheel thumbset reset.
Turn on all the autopilot options.
That didn't solve the GPS issue for me. But I then did the following:
4. Power Off
5. two-wheel thumb reset (again)
6. Waited perhaps 10 minutes
7. Drove around the block (FSD Beta worked to see the road and cars, but map still stuck)
8. Then the GPS magically fixed itself.
As for the rear view camera, The first two-wheel thumb button reset fixed it.