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Thread: Cruise Control & Horn stopped working

  1. #1
    Join Date
    Apr 2009
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    Cruise Control & Horn stopped working

    Hi Folks,

    As above just noticed that CC & horn no longer function.

    Fuse 16 under the bonnet is OK.

    The radio controls on the steering wheel still function.

    The horn sounds when trying to lock the car with a door open.

    Any ideas.

    Thanks

    2003 V8

  2. #2
    Join Date
    Jan 2017
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    Geraldton WA
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    I have the same problem except when I replace the fuse for the horns it blows every time I try to use the horn.
    You only get one shot at life, Aim well

    2004 D2 "S" V8 auto, with a few Mods gone
    2007 79 Series Landcruiser V8 Ute, With a few Mods.
    4.6m Quintrex boat
    20' Jayco Expanda caravan gone

  3. #3
    Join Date
    Feb 2009
    Location
    Newborough, VIC
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    Disconnect at the horns and try again. If fuse blows, you probably have a wiring issue. If okay, reconnect one horn and try again. If okay, reconnect other horn. If fuses blows replace the offending horn or leave disconnected until you can.
    2002 D2 4.6L V8 Auto SLS+2" ACE CDL Truetrac(F) Nanocom(V8 only)

  4. #4
    Join Date
    Jul 2014
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    The cruise control has a circuit through the horn relay's coil(i dont know why) so rule out the horn relay(swap R12 with R13) to make sure that the misslock audible warning you hear is not emited by the alarm sounder(depends on the setting)...if this is ruled out the next suspect is the rotor coupler, it has separate circuits for each system within.
    Discovery Td5 (2000), manual, tuned

  5. #5
    Join Date
    Apr 2008
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    Brisbane,some of the time.
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    There are two horns from memory,and they like to fill with water which causes issues.

  6. #6
    Join Date
    Apr 2009
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    Sandgate, Brisbane
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    Thanks for the responses so far.

    Turns out Fuse 16 was stuffed.....put glasses on & used a multimeter.

    So now the CC works but no horns still.

    Can hear the relay clicking when pushing the horn button.

    Next step I guess is pulling the grill out & checking the horn connections.

  7. #7
    Join Date
    Jan 2013
    Location
    Tasmania
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    I fitted an air horn to mine....dodgy stock horns can stay unplugged!

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