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My alarm is malfunctioning, often going off on its own-

(1999 Porsche 911)
in Kennett Square, PA on May 11, 2011
car has 145000 miles. recently alarm malfunctioning and emitting lite on dash not appearing at all.
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Popular Answer
on May 11, 2011
It could do this for many reason which requires an OE diagnostic computer, but I'd start by checking the battery with a good battery tester.
This would be the first and cheapest test.

Zee
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