What is your question?
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What is your question?
All I want to know is which knob turns the heat on in a 2000 Mercury Mountaineer I just bought the car it had no manual with it. Can you please tell me which knob to turn to get it on heat.
IF you have the 3 knob manual climate control then operation should be pretty straight forward but you will need to utilize all 3 knobs.. However if air only blowers out the defrost vents - possible vacuum leak under hood. Sorry for the extra operational tips.. Good luck!