A good suggestion! I went through a complete cycle of disappointment to elation and then back to sadness while testing it out:
- Ignition on, changed "Camera System Rear View" in Gateway to "disabled"
- Hard reboot MIB; no change, button still there
- Figure maybe the car has to be off for a bit for it to stick? Ignition off, door open, wait about 30 seconds. Hard reboot MIB, restart: button gone! Hooray!
- Lock car, walk away. Realize I left something in the car, walk 5 minutes or so back to it. Open door, MIB on: button is back
I'm starting to think my 5F is haunted... appreciate the idea, though, many thanks!