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Passenger window goes up fine and immediately goes open 1/2 way

Discussion in 'Gen 2 Prius Technical Discussion' started by glrooney, Nov 6, 2021.

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  1. glrooney

    glrooney New Member

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    On 2009 Prius: The passenger window motor works fine.. I can press it to go down or up. When I press up, the window goes down to 1/2 open automatically. I just had a jump to start the car yesterday and the window problem started right after that. Is it possible something got damaged during the jump start? If so, can someone tell me how to fix it? I am NOT mechanically inclined, So, please be simple in explanation. Thank you so much.
     
    #1 glrooney, Nov 6, 2021
  2. SFO

    SFO Senior Member

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    Welcome to PriusChat!!

    How old is the 12v battery, or when was it last replaced?

    FYI : you're being moderated until you've posted 5 times.
     
    #2 SFO, Nov 6, 2021
  3. ChapmanF

    ChapmanF Senior Member

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    When the power is lost for whatever reason, Gen 2 windows forget where 'up' is.

    Then when you send the window up, it hits the top of the door and that triggers the safety backoff (just as you would want if the window encounters your arm on the way up), because the window doesn't know that position is 'up' and it only hit the top of the door.

    To have the window relearn where up and down are, roll it all the way down and hold the button down several seconds, then roll it all the way up and hold the button up several seconds, and after that it should know where up and down are again.

    The procedure is in your owner's manual in case I'm whiffing the details.
     
    #3 ChapmanF, Nov 6, 2021
  4. glrooney

    glrooney New Member

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    Thanks for your answer. I wish I had tried that, but it's cold outside and I needed the window up, so I took it to dealer who reprogrammed the computer.
     
    #4 glrooney, Nov 12, 2021
  5. SFO

    SFO Senior Member

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    Hope they didn't charge you for that.
     
    #5 SFO, Nov 14, 2021
  6. ChapmanF

    ChapmanF Senior Member

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    • Holding window button up for 5 seconds: $0.02
    • Knowing to hold window button up for 5 seconds: $99.98
     
    #6 ChapmanF, Nov 14, 2021
    mr_guy_mann, dig4dirt and dolj like this.
  7. dig4dirt

    dig4dirt MoonGlow

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    • Getting wealth of info and help from Priuschat site and members: Priceless
     
    #7 dig4dirt, Nov 14, 2021
    Raytheeagle likes this.
  8. ChapmanF

    ChapmanF Senior Member

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    That Mastercard campaign was clever, but I hope people don't end up forgetting the older joke. That was a good'un too.
     
    #8 ChapmanF, Nov 15, 2021
    dig4dirt likes this.
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