I'm on .7 and started yesterday's road trip at -16C (after parking overnight outside). I didn't have any shutdowns like I have previously experienced at that temperature. The car is still going in to the SC next week and Tesla said they have "ordered parts" to deal with my problem. I had previously read that the shutdowns had to do with air inlet door freezing open, but SC told me that the earlier firmware changes have caused heat pumps to overheat and shed material into the coolant circuit. Anyone know more about that failure mode?
