My 2018 does the same exact thing. Sometimes turning the a/c on and back on corrects the problem. Sometimes turning the car off and back on corrects it but many times neither work and it eventually comes back on. Guess It will have to go to the dealer. It's way to hot in Palm Springs, Ca. to...
I have a 2018 SV and live in the Palm Springs area. In normal conditions I don't think you'll have a problem. You will gain about 20 miles of regeneration on the way back. If you have to because of rain wind etc. the Morongo Casino has 2 fast chargers on the 4th floor of the parking structure...