faulty combination switch - high beams stuck - installation help

Discussion in 'Gen 2 Prius Technical Discussion' started by torpedo51, Apr 16, 2012.

  1. torpedo51

    torpedo51 New Member

    Joined:
    Apr 16, 2012
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    Location:
    Carson City
    Vehicle:
    2004 Prius
    Model:
    II
    Headlight knob: rotated to OFF
    Headlight lever: LOWBEAM position
    Expected Results: headlights are completely off
    Actual results: headlights are completely off (OK)

    Headlight knob: rotated to OFF
    Headlight lever: pulled into FLASH TO PASS position
    Expected Results: highbeams on until lever is released
    Actual results: highbeams on until lever is released (OK)

    Headlight knob: rotated to ON
    Headlight lever: LOWBEAM position
    Expected Results: lowbeams on
    Actual results: highbeams on (FAIL)

    I verified the relays are working correctly. I suspect the combination switch itself is faulty. I will check the pins on the relay panel with a voltmeter later to confirm that the combination switch is sending voltage to the high beam relay incorrectly.

    In the mean time, I've found a replacement combination switch (Standard CBS-1233). I may need installation instructions. Can anyone help me find a procedure or diagrams please?
     
    #1 torpedo51, Apr 16, 2012
  2. seilerts

    seilerts Battery Curmudgeon

    Joined:
    Mar 7, 2010
    3,326
    1,515
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    Location:
    Santa Fe, NM
    Vehicle:
    2005 Prius
    It is a PITA in comparison to other makes. You have to pull the steering wheel, which means disconnecting 12V power and removing the airbag.. Instructions are about the same as for replacing the clockspring aka spiral cable.
     
    #2 seilerts, Apr 16, 2012
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