I do not know anything about my 2010 Ford Expedition. The rear is blowing out hot air and so I took it to a AC place for a diagnosis. It was everything is fine just needs freon. I went autozone and purchased the freon. The problem is I do not know where to put it. I see the L cap under the hood for the front ac unit, but I do not know how to find the rear ac to put the freon in. Or is it the same line for both the front and the rear?