Why can I not change where my heat comes from?
I drive an 03 Hyundai Elantra GLS and whenever I try to get heat to my windshield
(defrost) nothing comes out. Furthermore, when I try to change to any other mode, nothing
happens. I get air out of my dash vents, and that is it. How can I fix this or diagnose the
the switch itself could be bad or it could be a blend door actuator in the ductwork.
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