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Thread: Alarm/Immobiliser Fault

  
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    Angry Alarm/Immobiliser Fault

    Morning,

    Recently had some major work done on my Astra 2.0 SRI including new cambelt, head skim, water pump etc as my cambelt slipped a few weeks back.

    Collected the car yesterday and everything seemed fine. Went to a friends and when I was leaving I couldnt unlock the car properly with the key fob. It was making only what I can describe as a "half hearted" unlocking noise and the interior light would come on very dim. As I was pressing the open/unlock on the fob the alarm was going off intermittently. Again the noise was very weak and not the usual alarm sound.

    Once I managed to get into the car without the alarm sounding, the car refused to start.

    I was under the impression that if the battery is disconnected for a long period of time it messes with the alarm/imobililser and this is possibly what has happened.

    Has anyone got an idea what is going on or how to solve the issue. Any ideas will be welcome.

    Thanks in advance

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    From what you have described to me mate it just sounds like you have a flat battery on the car
    Want a professional job done on fitting your aftermarket electrical accessories? PM me for a quote
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    Yeah I suppose it could be. Connections to the alternator not done properly or something?

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    sounds like a definite flat battery

    by all means check the connections but id just whip it off and charge it - good idea this time of year anyway

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    But the thing is when I collected it, the battery had charge. It managed to loose it in a half hour drive with the radio on.

    So wouldn't that mean that a connection to the alternator or to the battery was faulty?

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    Yes it could means one or the other is now faulty. Until the battery is fully charged and you have tested the voltage of the battery with the engine running you won't know though

    Does the battery light come on before the engine is started? How long was the car left for after this half hour drive?
    Want a professional job done on fitting your aftermarket electrical accessories? PM me for a quote
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    The battery light does not come on.

    The car had been in the same place for a few weeks before it was fixed so thinking about it this could be the issue.

    I'm going to charge and test the battery over the next couple of days. I'll report how it goes.

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    If the battery light isn't on with the ignition on and the engine not running then there's a alternator/ wiring issue
    Want a professional job done on fitting your aftermarket electrical accessories? PM me for a quote
    Electrical fault finding also taken on
    Located in N/W London HA3, and willing to travel within reason





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    Update: After recharging and testing the battery it turns out it was shot. We put another one in and everything was fine.

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