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Dash Vent Always On

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Mike Axsom, Apr 24, 2016.

  1. Mike Axsom

    Mike Axsom New Member

    Joined:
    Apr 24, 2016
    4
    2
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    Location:
    North Vernon, IN
    Vehicle:
    2009 Prius
    Model:
    III
    Hi. This is my first post. I searched and didn't find an answer.

    I drive a 2009 Prius and suddenly the air, whether vent, heat, or a/c, comes out of the dash vents no matter whether I have those selected or just the floor or defroster selected. I had a Jeep with a similar problem and it was vacuum leak which I fixed with a $1 hose. Does anyone know the problem here and how to fix it? Thank you.