Why does the passenger side dual climate control only blow cold air?
The passenger side of my dual climate control will not blow hot air and I is doing the same fro the rear passenger vents. I have a 2009 F150 Platinum
There is a door on the plenum, behind the dash which opens and closes to direct cold air. For safety purposes and by design most vehicles have hot water supplied to the heater all the time. I suspect the door closing off the cold air, allowing hot air to flow, is stuck or broken.
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