C3 hazard light
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Thread: C3 hazard light

  1. #1
    Tadpole
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    Default C3 hazard light

    Hi,Frogies my first post just bought a c3 hdi and hazard lights have mind of there own,came on by themselves and won't cancel
    Any thoughts on this prob.would be appreciated. Stancikas0

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  2. #2
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    Early C3 (the uncommon late one is quite different)? Did the flashing not stop when the remote was used ?

    PS Was this after a battery disconnect? The cars do very odd things if the computer isn't put to sleep.
    Last edited by seasink; 19th February 2016 at 11:44 AM.

  3. #3
    Now go make me a sandwich Hotrodelectric's Avatar
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    I'm with Seasink on this. Check your battery condition. Body control modules tend to do some bizarre things if the battery isn't 100%, both at rest and running. We can go from there.
    The measure of your character isn't what you do when people are watching- it's what you do when they aren't watching.

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    Contented Peugeot Driver addo's Avatar
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    I'm wondering if it's a COMM unit fault myself.

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    It could be a COMM (the unit with the indicator stalks). The best clue will be what action triggered this.

  6. #6
    Now go make me a sandwich Hotrodelectric's Avatar
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    Quote Originally Posted by seasink View Post
    It could be a COMM (the unit with the indicator stalks). The best clue will be what action triggered this.
    Is the hazard switch part of the stalk?
    The measure of your character isn't what you do when people are watching- it's what you do when they aren't watching.

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    Contented Peugeot Driver addo's Avatar
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    I looked at the earlier C3 wiring. The four-way flashers simply ground out one terminal of the instrument panel harness, if there's no underlying problem and they won't stop I reckon a physical short inside the panel is possible.

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    Now go make me a sandwich Hotrodelectric's Avatar
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    Quote Originally Posted by addo View Post
    I looked at the earlier C3 wiring. The four-way flashers simply ground out one terminal of the instrument panel harness, if there's no underlying problem and they won't stop I reckon a physical short inside the panel is possible.
    Ah- OK. A ground signal into the control module completing the transistor circuit. I'm assuming you can unplug the panel or the stalk and see if the lamps go out?
    The measure of your character isn't what you do when people are watching- it's what you do when they aren't watching.

  9. #9
    Contented Peugeot Driver addo's Avatar
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    If they stay on when the switch is unplugged (centre panel, above radio), then the next experiment would be unplugging the instrument panel. If they still run it's a fault downstream.
    Hotrodelectric likes this.

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