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2003 BMW 5 Series
Problem for BMW 2003 5 Series

Car Alarm keeps going off on 528i (1999)




By leiker_12 on May 28, 2009

" "
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? 

Clarification Request

Posted by emissionwiz on May 28, 2009

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

Best Solution

posted on Jun 20, 2009
Very Helpful)

sandersl

Rank: Apprentice 
Rating: 100%, 1 votes
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.
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Solution #2

posted on Jul 02, 2009
Somewhat Helpful)

johnbellreal

Rank: Apprentice 
Rating: 75%, 1 votes
The BMW Dealer can replace the battery on the remote
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