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Porsche Club GB

Alarm Issues

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YOUR RESEARCHAlarm Issues

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Suggestion · Original poster

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.

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Alarm Issues
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Leading evidence: 'Fill with water' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Fill with water' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Fill with water

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Suggestion · Original poster

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.

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Alarm Issues
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4 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Porsche Club GB: 1 discussions

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POST 1 / ORIGINAL POSTEROriginal post

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).

POST 2Original post

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.

POST 3Original post

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.

POST 4Original post

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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