I had the daughter-board replacement and it simply doesn't help solve the core problem, though it did solve my problem about a black/bricked MCU1
* Random reboots
* Freezes / lagging
* Disabling of Autopilot
Went back to the dealership and at the time (30-45 days ago) was told that there was no option to replace the MCU1 for the vehicle. They only were able to reflash the firmware (which meant reprogramming everything, including the garage door).
This. Absolutely.
Driving last night I had the MCU1 crash in Spotify while driving at 3AM. First it hung (stopped playing music, ambient lights in the doors went off and then on) then the system rebooted on a windy stretch of US 50. Once that was done, the autopilot function was disabled (yellow warning, constantly on) and couldn't be re-enabled even though I did pull over and put it into park-drive (same as if the auto-pilot is normally temporarily disabled.
It wasn't until I hit a supercharger and walked away from the car did it come back on.
The other safety issue is if you have your mirrors folded, ventilation settings and even sunroof ... nothing works. Imagine trying to drive to a service center w/o an MCU and the mirrors are folded in, plus it's too hot/cold to the extent that you have no ventilation!