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Columbia city horn blaring at 4:30...am??

Discussion in 'Freightliner Forum' started by Elroythekid, Oct 16, 2019.

  1. Oct 16, 2019 #1
    Elroythekid

    Elroythekid Road Train Member

    2,613
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    Sep 9, 2010
    Halifax Nova Scotia
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    Woke up to a horn blaring at 430 am... my horn.... when I pushed the button you could hear it change sound so it wasn't the button stuck? Had to unplug it.
    Any ideas? Or does anybody know how a 2012 columbia horn is wired?
     
    Elroythekid, Oct 16, 2019
    Elroythekid, Oct 16, 2019
    #1
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  3. Oct 16, 2019 #2
    ibcalm19

    ibcalm19 Road Train Member

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    Nov 30, 2015
    Pennsylvania
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    Change out the horn itself maybe a contact in the horn itself is sticking. All the best to you.
     
    ibcalm19, Oct 16, 2019
    ibcalm19, Oct 16, 2019
    #2
    Elroythekid Thanks this.
  4. Oct 16, 2019 #3
    Al8429

    Al8429 Bobtail Member

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    Sep 10, 2019
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    Not sure if this applies to Freightliner but internationals will blow the horn if you leave the truck in gear. Same thing happened to me at 2am while I'm asleep
     
    Al8429, Oct 16, 2019
    Al8429, Oct 16, 2019
    #3
    Elroythekid and Intothesunset Thank this.
  5. Oct 16, 2019 #4
    Intothesunset

    Intothesunset Road Train Member

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    Apr 15, 2019
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    Unplug and use air horn problem solved.
     
    Intothesunset, Oct 16, 2019
    Intothesunset, Oct 16, 2019
    #4
    OldeSkool and Elroythekid Thank this.
  7. Oct 16, 2019 #5
    Mid-May Trucker

    Mid-May Trucker Road Train Member

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    Water can make the horn go off.
     
    Mid-May Trucker, Oct 16, 2019
    Mid-May Trucker, Oct 16, 2019
    #5
    Elroythekid Thanks this.
  8. Oct 16, 2019 #6
    Ridgeline

    Ridgeline Road Train Member

    22,655
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    Dec 18, 2011
    Michigan
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    Omg, first disconnect the horn.

    What is going on is the horn negative or ground goes to the switch on the dash, via a long wire. Somewhere between the horn and the horn button is grounding out, broken or insulation is cracked is what the problem is.

    When this happens, the horn gets grounded partially and when you push the horn button, it grounds the horn better so you get a different tone.
     
    Ridgeline, Oct 16, 2019
    Ridgeline, Oct 16, 2019
    #6
    Elroythekid, Farmerbob1, AModelCat and 1 other person Thank this.
  9. Oct 16, 2019 #7
    stillwurkin

    stillwurkin Road Train Member

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    Dec 2, 2017
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    Could be a issue in the horn button on steer wheel.
     
    stillwurkin, Oct 16, 2019
    stillwurkin, Oct 16, 2019
    #7
    OldeSkool and Farmerbob1 Thank this.
  10. Oct 16, 2019 #8
    Elroythekid

    Elroythekid Road Train Member

    2,613
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    Sep 9, 2010
    Halifax Nova Scotia
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    Don't think it's the horn button, when you pressed it it actually got louder and still seemed to work. It's like the horn was getting power elsewhere?
     
    Elroythekid, Oct 16, 2019
    Elroythekid, Oct 16, 2019
    #8
  11. Oct 28, 2019 #9
    2hot2handle

    2hot2handle Light Load Member

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    Aug 25, 2015
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    Except you have a bigger problem when you get pulled in for a level one and the inspector asks you to operate your city horn.
     
    2hot2handle, Oct 28, 2019
    2hot2handle, Oct 28, 2019
    #9
    Elroythekid Thanks this.
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