My A/C was a little possessed today. Had to turn it way up in the morning since it was a pretty cold day. For some reason, it made an ungodly whistling noise that I'd never heard it make before. Some kind of very loud wind noise from the ducting. I got it to stop by switching to windshield defrost (changed the sound but didn't make it go away entirely) and then toggling fan speed down and up a bit. After 10-15 seconds it finally stopped. Then 15 minutes later, I couldn't get the car to stop blowing hard (and btw I've noted this before but at higher fan speeds, for a car that is otherwise eerily quiet, the AC is loud AF). My daughter and I were laughing as we both tried turning our fans up and down, Max AC on and off, even both fans set to 0 but the car still blowing (up front, yes) like mad. It's always a little buggy, but today was the worst it's been. Also, I tried turning on seat heaters and steering wheel heater in the app, but they were definitively not on in the car.