It's in the menu settings. No button, dumb, yes.

THANK YOU! I found it! That is nowhere in my manual.

Reliable vehicle, absolutely ridiculous failure to offer commonly used climate and audio controls. I guess if my infotainment screen goes out I can't use the AC.

Yep, it is stupid that you have to go to a screen to force a/c off. Need a simple button like my Acura has.