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Car alarm won't reset after disconnecting car battery

Was working OK until I disconnected the battery. When I went to reconnect the battery the alarm activated and I can't reset. The ignition lights come on but the car won't start.

Its a mongoose alarm (not a factory alarm) with key entry and there's a switch (like the ones that operate the light in a fridge) under the bonnet.

I've disconnected one of the wires to the siren (does the siren need to be connected for the alarm to be reset?)

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  • Rayrod11 Mar 06, 2009

    Can't reset armed alarm, the alarm keeps going on and self reset but doesn't let the ignition work or turn on the car


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You should try to hit the unlock button on the remotes and that should disarm it. Try disarming that, that way and if that doesnt work we will go from there

Posted on Feb 22, 2009

  • darnash2000 Mar 22, 2011

    With the Code Alarm system, we unhooked the positive side of the battery for 5 minutes and then rehooked it. The alarm with the remote now works fully again.


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