This just in....
To add to the story, being a DIY and fairly electronic savvy, IoT maker, guitar pedal designer/builder kind of guy with an electronics lab at home. I had actually popped the camera out on a couple of occasions over the last couple of weeks - just to look for simple stuff. Maybe a bad connection or something I might be able to fix myself. This is after all the normal reboots and resets and dealership diagnostics.
Nope, no luck and I'm 100% certain the cable was both connected properly and not broken so I came the conclusion the camera really is broken or the problem is on the other end of the cable or who knows. I even turned the cameras on while wiggling/snugging the coax cable and never did I even get so much as a glitch of signal so again, "it ain't that". Then...
This afternoon.... End of work day arrives and I go outside to give my M3 her weekly hand bathing. Soaped her up, rinsed, blew dry lovingly with my vacu-blower, topped that off with a ceramic based detail spray - sure is pretty and shiny. I always give it a couple miles round the block after a wash just to enjoy the car, especially in these lockdown times where I don't get to drive it much. As I'm backing out of the driveway...
Wtf holy heck? Now it is working. It has never worked before, not even for a second, not even a video glitch of hope and suddenly this afternoon it mysteriously works. I'm having a hard time swallowing that the afternoon wash/blow had anything to do with it, I've done that multiple times, I've had it out and jiggled etc. plenty of times so a random intermittent connection it is not.
I'm going with intermittent 'something' but for almost 6 weeks there has been zero hint of this thing working for a second. I spend the morning complaining through every Tesla support avenue I can find and now it works.
Crazy times, wonder if it will break again by morning.