Woke up this morning to a "system start in progress" message and the MCU dark. It was plugged in and garaged - maybe 25 degrees outside but closer to 50 in the garage.
Did two 2-wheel salute a couple of times without response. MCU still dark. Then did the IC reboot and both rebooted. Things appear to be somewhat normal.
EXCEPT that the HVAC will now only let me choose the defrost vents. If I press middle or lower vents, they light for a few seconds and then turn off. Several soft/hard reboots later, no joy. Tried enabling/disabling defrost and AUTO - no joy. This is 2018.42 which I have had for a while but I've only noticed it today. With only warm air coming out of the defrost, it was a chilly ride.
Thoughts?