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Defroster blowing air thru all vents

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Saucey, Aug 20, 2022.

  1. Saucey

    Saucey Junior Member

    Joined:
    Jan 11, 2016
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    Vehicle:
    2013 Prius
    Model:
    Two
    Hey everyone, I did a search but couldn't seem to find my issue.

    On a "cold" morning about 60F or so I gotta defog my windshield. So I'll press the defogger button and sometimes it'll blow air through the front vents (haven't noticed the feet vents). I'll have to press it a few times where it'll work as intended & blow air through the windshield.

    Im guessing there's just a lot of dust that gunked up, so it blows air thru all the vents?:ROFLMAO: The sprockets need lubricant maybe?

    I'm assuming this bc for a few years, I'll get outside air even if I have the AC/Vents off & in cabin recirculating. Now I think of it, maybe I gotta press that button a few times too, to get it fully closed.
     
    #1 Saucey, Aug 20, 2022
    bisco likes this.
  2. bisco

    bisco cookie crumbler

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    boston
    Vehicle:
    2012 Prius Plug-in
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    Plug-in Base
    there's always a percentage of outside air for health reasons.

    if the vent doors aren't opening and closing properly, it could be the servo motors.
     
    #2 bisco, Aug 20, 2022
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