2021 2.7 with 16000 miles, ac stopped working. Dealer says evaporator needs replaced, a bit concerned about my dash apart as well. Hope this doesn't happen out of warranty!
Having the same issue on my 21 2.7 STX with about 800 miles on it now. After reading your post I'm reluctant to even bother taking it back to the dealer. Maybe its a sending unit issue rather than the gauge cluster.