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Thread: hazard lights and rough roads

  1. 10th March 2008, 12:22 PM #1
    bblaze
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    hazard lights and rough roads

    its happened 3 times now with my 97 300 tdi disco.
    While driving on very coragated roads the hazards come on, to solve the problem I pull up and turn off the disco, when resarted the hazards go off. Is this a faulty inursure switch or ?
    cheers
    blaze
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  2. 10th March 2008, 12:33 PM #2
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    BigJon
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    It is a fault in the alarm module. There is a fix for it, it involves disconnecting a solder joint in the module.
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  3. 10th March 2008, 12:35 PM #3
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    sam_d
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    It's part of the wonderful Lucas electronics.

    Mine does the same whenever I go over a bump a bit too hard. It's to do with the intertia switch/collision sensing stuff or so I'm told.

    I'm sure someone else can explain more thoroughly...
    Last edited by sam_d; 10th March 2008 at 12:36 PM. Reason: Spelingg
    2012 Discovery 4 SDV6 HSE
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  4. 10th March 2008, 01:25 PM #4
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    foz.in.oz
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    I have had the hazards come on after hitting wash outs and the like and have had to reset using the inertia switch. Funny thing is, the inertia switch is supposed to cut off the fuel supply but the engine continues to run and the hazard lights flash. I don't see it as a real problem because it requires a pretty decent thump, which if nothing else reminds me to calm down a bit
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  5. 10th March 2008, 01:39 PM #5
    bblaze
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    Thanks all
    After reading the replys I am now happy to put up with it. Like its only happened them few times and I spend a bit of time on rough roads so its not a constant annoyance.
    cheers
    blaze
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  6. 10th March 2008, 02:59 PM #6
    streaky Guest
    Quote Originally Posted by BigJon View Post
    It is a fault in the alarm module. There is a fix for it, it involves disconnecting a solder joint in the module.
    Jon....I don't have an alarm module on my Discovery but I still suffer from the same problem everytime I hit a large pothole or similar.
    Would I still have the alarm module in my loom somewhere or perhaps the MFU does the same job if an alarm is not fitted?

    Thx.

    S.
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