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Alarm Issues

Richard_Hamilton

Richard_Hamilton

PCGB Member
Member
I would see what happens after the battery has had a good charge. Low voltage causes all sorts of alarm issues. I can't remember what year your car is, but if it is pre-2001ish, check that the alarm tilt sensor isn't filled with water, which is a common source of false alarms. It is located under the cover to the right of the battery as you look at it. (The box with the white sticker in the pic).
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My alarm always tends to go off as the battery drains towards flat so I've always got it on a trickle charger now. I've always assumed it was designed that way in case anyone is trying to cut the power to silence the alarm in order to steal the car. I believe the alarm has its own battery to keep the sounder going.
 
Just returned from a week away, to find that my alarm has been going off since Tuesday on and off.

The car is garaged, and there is no sign of dampness under the passenger seat. I tried to start the car and the battery was flat. Following a quick charge, I started the car, but the alarm started to go off with the engine running. The alarm eventually stopped, and I went for a drive to warm the car up, and get more charge into the battery. I have now left the car on charge.

I am not sure if the alarm going off has flattened the battery, or the battery going flat has prompted problems with the alarm.

Any ideas most welcome.
 
Thanks for your replies. Car will stay on charge overnight, and I will check the tilt sensor in the morning, as the car is 1999.
 
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