I have a 2002 honda civic lx that I just bought second hand. I just noticed that when I run the defrost fan setting the a/c comes on! If I shut the a/c off, switch the mode selector to foot or panel or something other than defrost, the a/c stays off and switches on and off normally, as you would expect. However, with the a/c off, when I switch the mode selector to defrost, the a/c turns on too!!
Does anybody else have this problem? anyone know how to fix it?