Quote:
Originally Posted by turbo_d
Heat doesn't come out of the center vents. Heat comes out of the side vents, the lower legroom vents and the defroster vents (when you push defrost, otherwise a little bit of heat comes out of the defrost vents, "enough to keep the windshield clear")
A/C comes out of the center vents. (A/C also comes out of the side vents)
(According to the Service Manual, Heating, Air Conditioning, Automatic Climate Control W123)
(I was looking at the section on Climate Control III like in my 1985 300DT, haven't looked at the older systems yet.)
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Now it does on mine - heat and cold air on the center, side and leg vents.
The pod that actuates the center vent has a spring inside, that keeps the center vent flap closed. Take the actuator out with the glovebox out to have a good sized access port. You'll need small hands.