In the manual setting with the a/c off, between 63 and 90 it is hot and doesn't change until you get to 62 then it's cold. If you have the a/c on the temp will change fine. If you have it on Auto the temp will change on its own between the defrost and the floor. The dealer told me that I have to use Auto and that Nissan didn't make manual to work like that. I just can't believe that Nissan would make the manual setting so that you couldn't change the temperature.