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Another Hid Question

Discussion in 'Gen 2 Prius Technical Discussion' started by ThePackage, Feb 14, 2008.

  1. ThePackage

    ThePackage New Member

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    I am curious about how the HID headlights go from low beam to high beam. Are their two separate filiments in the HID bulb or is their some other kind of mechanism? Also, is it true that the OEM bulbs are D4R with a color temperature of 4300K? Thanks for your help.
     
    #1 ThePackage, Feb 14, 2008
  2. finman

    finman Senior Member

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    The Prius HIDs have a small lens "blocker" that mechanically moves to block or allow more of the HID light. So, in effect, the HIDs are always full on, but on low beam a portion of the light is blocked by this do-hickey. Must be a better name...

    No clue on the temp of the other bulbs.
     
    #2 finman, Feb 14, 2008
  3. ThePackage

    ThePackage New Member

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    Thank you "Finman" for getting back to me. Do you know if that "shutter" is part of the bulb or part of the headlight assembly?
     
    #3 ThePackage, Feb 14, 2008
  4. PRIUS007

    PRIUS007 James Bond -007

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    I think it's part of the assembly and not the actual HID bulb. As for the color, I think most facroty HID's are 4300K.
     
    #4 PRIUS007, Feb 14, 2008
  5. tedmarshall

    tedmarshall New Member

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    The shutter is definitely not part of the bulb but is the metal "crown" over the tip of the bulb. If you watch a Prius HID from the side (so you don't get blinded) while someone flashes the brights, you will see it move.
     
    #5 tedmarshall, Feb 14, 2008
  6. lenjack

    lenjack Active Member

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    D4R is correct.
     
    #6 lenjack, Feb 14, 2008
  7. kohnen

    kohnen Grumpy, Cranky Senior Member

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    The manual on my '07 Touring calls out a D2R.
     
    #7 kohnen, Feb 14, 2008
  8. ThePackage

    ThePackage New Member

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    Thank you all for the information.
     
    #8 ThePackage, Feb 15, 2008
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