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Auto dim headlights

Discussion in 'Gen 4 Prius Main Forum' started by CharlesLewis, Oct 4, 2017.

  1. CharlesLewis

    CharlesLewis Junior Member

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    I have noticed that I keep having to turn on the auto headlight feature. Once on it works fine, but on another night trip, it's off and I have to reset it.

    I don't drive much at night, but it seems to happen each time I start a new trip. I thought at first I might have hit the switch opening the gas cap, but that's not the case.

    Isn't this supposed to stay on unless I turn it off or is this the way the feature is designed?
     
    #1 CharlesLewis, Oct 4, 2017
  2. Flaming

    Flaming Active Member

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    it's called auto-dim ... it means that it need to be On to work.

    You need the auto-dim switch to be On AND ALSO the stalk on the steering wheel set to High Beam position... if the auto-dim is On and the stalk is set on low-beam .. nothing will happen.
     
    #2 Flaming, Oct 4, 2017
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  3. CharlesLewis

    CharlesLewis Junior Member

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    I understand that. The stalk is on high beam. The problem is that when I press the button for auto-dim, it seems to switch off when I cut off the engine and I had to switch it back on the next time I drive after dark.
     
    #3 CharlesLewis, Oct 4, 2017
  4. CooCooCaChoo

    CooCooCaChoo Senior Member

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    The button for auto-dim is an always on or always off. Once you turn it on, it will only turn off if you press it again to turn it off.
     
    #4 CooCooCaChoo, Oct 4, 2017
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  5. CharlesLewis

    CharlesLewis Junior Member

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    That's what I assumed, but it IS turning off, so I must have a problem.

    Thanks
     
    #5 CharlesLewis, Oct 4, 2017
  6. Flaming

    Flaming Active Member

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    Oh .. that's odd ...mine stays on all the time , but i noticed that it super sensitive and does not need a big push on the button to turn it Off / On
     
    #6 Flaming, Oct 4, 2017
  7. CharlesLewis

    CharlesLewis Junior Member

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    I thought about that and wondered at first if I had but it when I popped the gas cap, but it has happened even when I didn't get gas (love the gas mileage!).
     
    #7 CharlesLewis, Oct 4, 2017
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  8. Harters

    Harters Active Member

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    When the button is on the 'on' position can you feel that it is slightly lower than the other buttons around it? and when you go to use it and its not working does it still feel recessed or feel flush with the other buttons and are you having to click off and click on again to get it to work?
     
    #8 Harters, Oct 5, 2017
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  9. CharlesLewis

    CharlesLewis Junior Member

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    I'll have to check this weekend. Thanks for the suggestion.
     
    #9 CharlesLewis, Oct 5, 2017
  10. kithmo

    kithmo Couch Potato

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    Could you be catching it with your knee when you get in ?
     
    #9 kithmo, Oct 5, 2017
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  11. CharlesLewis

    CharlesLewis Junior Member

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    I hadn't thought about that. I'll experiment to see.
     
    #9 CharlesLewis, Oct 5, 2017
  12. CharlesLewis

    CharlesLewis Junior Member

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    That must have been it. They worked fine last night. I'll just be careful getting in.

    Thanks for solving the mystery.
     
    #10 CharlesLewis, Oct 8, 2017
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  13. kithmo

    kithmo Couch Potato

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    I've done it myself, I don't usually have Auto Hi-beams on but I have occasionally accidentally caught the button with my knee and turned them on.
     
    #11 kithmo, Oct 8, 2017
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  14. RCO

    RCO Senior Member

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    Another case of kneed to know. :whistle:
     
    #12 RCO, Oct 10, 2017
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