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Front Defroster/Defogger, whatever you want to call it

Discussion in 'Gen 3 Prius Technical Discussion' started by nivekonbass, Jun 20, 2022.

  1. nivekonbass

    nivekonbass Member

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    Hi guys,

    Hoping to get some help with a problem I'm having on my Prius. When I try using the windshield defroster/defogger it just doesn't do anything. When I hit the button, no light or anything. Rear one works, but windshield does not. Heat/AC works fine, just this button doesn't do anything.

    Where can I find the fuse box for this (no manual in my car, online manual doesn't show the windshield defroster location from what I'm seeing)?

    Is there anything else I should check out? Never had this problem before, please forgive my ignorance as I got this car 2 days ago.
     
    #1 nivekonbass, Jun 20, 2022
  2. ChapmanF

    ChapmanF Senior Member

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    I doubt you're going to find any 'fuse' that will be the cause of your defrost button having no effect. That's just one of the buttons built into the HVAC buttons-and-display unit, and if the display and other buttons work, it's getting power.

    From your description, my suspicion would land first and hardest on the button itself. A relatively unadventurous person might just get that panel (maybe a working used one, or one borrowed from another Gen 3) and see what happens. It only takes a minute to pop that panel out. If it were mine, I would probably see if I could get to the button contacts for cleaning.
     
    #2 ChapmanF, Jun 20, 2022
  3. nivekonbass

    nivekonbass Member

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    Why do you think it's the button itself?

    This is a 13 Prius with 80k miles. is it likely that this button would be dirty enough to warrant a new climate panel? Is there a relay or something I can test for this before I go spending money on a new climate panel? I do not have access to another gen 3 prius
     
    #3 nivekonbass, Jun 20, 2022
  4. nivekonbass

    nivekonbass Member

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    you called it. it is the button :p, sorry for questioning you <3
     
    #4 nivekonbass, Jun 25, 2022
  5. ChapmanF

    ChapmanF Senior Member

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    (y)
     
    #5 ChapmanF, Jun 25, 2022
    nivekonbass likes this.
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