I went to turn on the AC this summer, which has always blown cold...but for some reason the front blows heat and the back blows cold; even if I shut the front vents and run the front low and the back high so I can keep cool, you can still feel the heat trying to come thru the vents. Then I noticed because of that issue my stereo feels warm to the touch. It's not an easy fix; as Ford has made it impossible to fix unless you remove the whole dash; which costs more in labor than the parts itself....When will Ford get it rite?