1. Fan won't shut off, no matter if on heat, cool, AC.

    2012 Jeep Liberty. No matter what I turn the dials to, the fan blows constantly when I start the engine. And no matter if I put it on vents, the defrost air is blowing.

  2. #2
    Join Date
    Feb 2009
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    Fan won't shut off, no matter if on heat, cool, AC.

    So the fan is always on, and, it only blows through the defrost?

    Defrost only is a vacuum leak.
    Always on sounds like the switch is bad.


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    Last edited by JPNinPA; 04-08-2020 at 07:34 AM.
    "Never look down on anybody unless you're helping him up" - Jesse Jackson

  3. Re: Fan won't shut off, no matter if on heat, cool, AC.

    Could be a bad fan control module or relay.

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