I'll have to check that out. My memory says that the a.c. button still responds to my choice as the windows still fog up when I turn it off. I usually try and cycle it for a while to dry the air and then leave it off so I can run with out the compressor.The system overrides your selection. When it's warm enough, sit a while and listen to it cycle.
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I'll check it out next time I'm in the car.