The car went into the shop on Saturday, 3/11. It would not start or power up at all. I didn't get it back until Friday the 17th. They had to run two "test plans" and submit the results to "level 2 support" back east (I'm in California). The results were inconclusive. They basically rebooted the system and gave it back to me. The repair invoice notes "NO REPAIRS PERFORMED AT THIS TIME".
Sounds like stereotypical IT support:
Did you reboot?
Does it work now?
Then its fixed!
Um, no, that's not how computers work. If there is a glitch it will eventually repeat itself, software does not magically rewrite itself with a reboot.
Hmm, yes, I will mark this issue as resolved, thank you and goodbye.