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Weird headlight issue

Discussion in 'Volvo Forum' started by Morkable, May 3, 2016.

  1. May 3, 2016 #1
    Morkable

    Morkable Bobtail Member

    34
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    Dec 29, 2015
    0
    I am struggling to figure this one out. First off the truck is an 07 vt880

    The other day one of my headlights went out. Drivers side low beam. So I changed both bulbs and put in silverstars. Worked great for a couple days. Then yesterday the drivers side went out. Checked everything and it started working again. Then the passenger bulb went out. Changed the bulb and nothing. This morning I was driving and it started working again. I checked the wiring. Seems to be fine. Any ideas?
     
    Morkable, May 3, 2016
    Morkable, May 3, 2016
    #1
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  3. May 3, 2016 #2
    boneebone

    boneebone Road Train Member

    2,232
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    Mar 13, 2009
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    You either have a break in the wiring, bad ground, bad bulb socket, corroded wire or all of the above.

    I would start tracing the wires from the headlights back and check their condition.

    I believe your truck has a LCM (Light Control Module, it could be on it way out.
     
    boneebone, May 3, 2016
    boneebone, May 3, 2016
    #2
  4. May 3, 2016 #3
    me myself and I

    me myself and I Heavy Load Member

    716
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    Oct 5, 2009
    vernon hills,Il
    0
    My bet would be on bad bulb sockets
     
    me myself and I, May 3, 2016
    me myself and I, May 3, 2016
    #3
  5. May 4, 2016 #4
    nasriza

    nasriza Road Train Member

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    Feb 1, 2013
    Chicago, IL
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    most likely headlight harneses are getting burned out but probably wiring issue somewhere
     
    nasriza, May 4, 2016
    nasriza, May 4, 2016
    #4
    KB3MMX Thanks this.
  7. Jun 11, 2016 #5
    Zusky407

    Zusky407 Bobtail Member

    32
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    Jul 29, 2014
    Nebraska
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    check and make sure all of your LCM fuses are good
     
    Zusky407, Jun 11, 2016
    Zusky407, Jun 11, 2016
    #5
  8. Jun 11, 2016 #6
    CoyoteExpress

    CoyoteExpress Medium Load Member

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    Oct 29, 2014
    Carlingford NB Canada
    0
    If the lcm fuses are gone it will show up as a fault
    In the display
    Check the maine connectors between hedlight and frame (big gray one) for broken cables
    Check connectors direct at the bulb for overheating
     
    CoyoteExpress, Jun 11, 2016
    CoyoteExpress, Jun 11, 2016
    #6
  9. Jun 25, 2016 #7
    Mudman78

    Mudman78 Light Load Member

    106
    106
    May 23, 2016
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    There should be 6 light control module fuses. Make sure they are the exact amps listed on the label. Had a driver swap fuses and he put the wrong one in and the fog lights would go on and off randomly every few minutes. It did not show a fault on the display.
     
    Mudman78, Jun 25, 2016
    Mudman78, Jun 25, 2016
    #7
  10. Jun 30, 2016 #8
    Morkable

    Morkable Bobtail Member

    34
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    Dec 29, 2015
    0
    As it turned out it was some funky wiring. Not broken wires, but a farmer wiring job to put on driving lights. Finally something touched and there it was
     
    Morkable, Jun 30, 2016
    Morkable, Jun 30, 2016
    #8
    daf105paccar Thanks this.
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