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Head Lights -- Low Beam too Low (computer adj)

Discussion in 'Gen 3 Prius Main Forum' started by antoine, Jul 10, 2009.

  1. antoine

    antoine New Member

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    Location:
    maine
    Vehicle:
    2010 Prius
    Model:
    II
    Last night was my first night experience in my new Gen III/Model II.
    The low beam setting on headlights produced a beam that was too low.
    Called dealer to request adjustment. He told me they are automatically
    set by computer. I assume he meant the on-board computer.
    He didn't think he could make an adjustments in the shop.
    IS THIS TRUE? ANY IDEAS?
     
    #1 antoine, Jul 10, 2009
  2. yardman 49

    yardman 49 Active Member

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    Location:
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    Vehicle:
    2009 Prius
    They can indeed be adjusted vertically.

    The dealer is wrong.
     
    #2 yardman 49, Jul 10, 2009
  3. aapoppa

    aapoppa formerly known as "Popoff"

    Joined:
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    Location:
    NC Mountains
    Vehicle:
    2010 Prius
    Model:
    V
    I've got the same problem with my LED headlights ( I realize you don't have LEDs.)

    My dealer and factory rep both said headlights are not adjustable. That doesn't make any sense. There has to be a starting point, the car isn't born with the headlights perfectly aimed.

    I had a Priuschat person search TIS for "headlight adjustment for 2010 Prius" and they came up with a procedure. Ask your dealer to search TIS and see what they come up with. TIS document # RM0000011MI(or 1)O(or 0)3JX


    Let me know how it works out for you.
     
    #3 aapoppa, Jul 10, 2009
  4. HTMLSpinnr

    HTMLSpinnr Super Moderator
    Staff Member

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    Halogens are not computer adjusted - they're a fixed height based on the vertical adjustment screw under the hood.

    LED headlights are auto-leveling, but have a baseline vertical adjustment. A height sensor on the rear axle connected to the headlight ECU determines what "adjustment" is needed to maintain the baseline while the lights are on under certain conditions.
     
    #4 HTMLSpinnr, Jul 10, 2009
    2 people like this.
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