I hate this. I have tried reading the owners manual, I guess it's me but its clear as mud. When I hit the auto button and everything lights up-including the a/c light at the far right, am I suppose to leave that on even though I want heat? Is it "air conditioning" as in cold air? Does it affect gas mileage to have it on? Should I just leave the reading on one temperature all the time? Sorry, but I will take the old fashioned way anytime. I also dislike the temp gauge, hard to see if that little square moved.