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Auto-Dim Lights not working anymore

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by Skewby, Aug 20, 2021.

  1. Skewby

    Skewby New Member

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    For some reason, my auto-dim lights don’t work anymore. I can manually change the high beam and low beams, fog lights work, and so do DRLs. But at night the auto dimming function doesn’t work anymore. It doesn’t even light up with “auto” on the dash anymore.

    Ideas?
     
    #1 Skewby, Aug 20, 2021
  2. Tideland Prius

    Tideland Prius Moderator of the North
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    Did you depress the auto-high beam button to the left of the steering wheel while the stalk is in the high beam position (and it’s dark outside)?
     
    #2 Tideland Prius, Aug 20, 2021
    Last edited: Aug 20, 2021
    Mendel Leisk, PtPri and alanclarkeau like this.
  3. Skewby

    Skewby New Member

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    Holy. I swear I always forget that button… thanks!
     
    #3 Skewby, Aug 20, 2021
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  4. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    You do this once, and it’ll hold that setting?
     
    #4 Mendel Leisk, Aug 20, 2021
  5. Tideland Prius

    Tideland Prius Moderator of the North
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    Yes as long as that button's light is illuminated.

    The green "AUTO" with the high beams symbol on the dashboard only illuminates when the system is active (i.e. in low light conditions). It won't show the during the day, even if the system is on so you have to check that the green light on the button is illuminated during the day.
     
    #5 Tideland Prius, Aug 20, 2021
    Mendel Leisk and dig4dirt like this.
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