Dash Lights Dim

Discussion in 'Gen 3 Prius Main Forum' started by jerryd, Dec 19, 2018.

  1. jerryd

    jerryd Junior Member

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    3rd Gen forum,

    2018 Prius Gen III

    Like all Prius' when I turn on the headlights the dash lights
    and the display screen dim. I would like to defeat this
    feature.

    Any suggestions?

    Jerryd
     
  2. Raytheeagle

    Raytheeagle Senior Member

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    What’s the dimmer switch set at?
     
  3. jerryd

    jerryd Junior Member

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    Raytheeagle,

    Thanks for the reply.

    The dimmer switch was set at half way. When I set it
    up to max the lights and display stay bright with the
    headlights on.

    Strange that scrolling the dimmer switch anywhere from
    just on to full on doesn't change the brightness of the
    dash lights or the display screen. I would think they
    should get brighter and brighter as I scrolled from left
    to right?

    Jerryd
     
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  4. Raytheeagle

    Raytheeagle Senior Member

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    It should change some unless something is affecting the functionality of the switch;).

    If not, I’d investigate that further.

    Good luck and keep us posted (y).
     
  5. sam spade 2

    sam spade 2 Senior Member

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    Try it again at night.
    They will not dim in the daytime with the headlights OFF.

    Does finding that "click stop" on the dimmer solve your problem ?
     
  6. jerryd

    jerryd Junior Member

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    I think I have figured out what the dimmer switch does.

    With the headlights off the dash and display lights
    will always be at max brightness unless you turn
    the switch to the off position.

    With the headlights on the dash and display lights
    will be at the brightness of the position of the
    dimmer switch.

    Can't understand why Toyota wouldn't have it dim with or
    without headlights. Don't make my decisions for me but
    give me an option.

    Thanks for the replies.

    Jerryd
     
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  7. bisco

    bisco cookie crumbler

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    why are we in a third gen forum for a 2018?
     
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  8. Raytheeagle

    Raytheeagle Senior Member

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    OP said 2018 Gen III:whistle:.

    But profile says 2012 c:cool:.

    But problem could be with any of them :sick:.

    Glad we’re specific (y).
     
  9. jerryd

    jerryd Junior Member

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    Sorry the 2018 is new to me. My wife has the 2012 C
    that has been one of the best cars we have ever owned.

    Jerryd
     
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  10. bisco

    bisco cookie crumbler

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    2010-2015 liftback
     
  11. sam spade 2

    sam spade 2 Senior Member

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    Two reasons.
    1) Pretty much every vehicle ever made works that way.
    2) There is no reason to "dim" the dash lights in the daytime because in the original designs, they weren't even on then.......and on many models they still aren't.
     
  12. Grit

    Grit Senior Member

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    Its post like these that makes me stay away from the forum more than I want to; posting non turd gen questions & fixes in this sub forum intentionally.
     
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  13. Grit

    Grit Senior Member

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    Safety would be the reason it would be at max during daytime and not adjustable. Toyota would hate to allow you to drive it at lowest brightness then turn right into the sun and you suddenly can’t see the dash readout, look down to adjust brightness causing an accident because you took your eyes off the road because you were distracted.
     
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