Question about 2003 BMW 5 Series

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Car Alarm keeps going off on 528i (1999)

I'm thinking I may need a new battery for my keyless entry key, but not sure how to replace the battery- The alarm goes off even if the car is unlocked at random times.  It just started doing it last night, but I've had the car for 6 years and have never replaced the battery.  Could this be the main problem?

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  • yadayada
    yadayada May 11, 2010

    the system has the ability to generate trouble codes, have the dealer test the system to ID the faulty part that is causing this alarm problem

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I had a similar problem, 2003 530i, but only while the alarm was active. The culprit was a bad hood switch that was making intermitent connection.

Posted on Jun 20, 2009

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The BMW Dealer can replace the battery on the remote

Posted on Jul 02, 2009

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