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Discussion Starter #1
out of no where the alarm on my e46 is miss behaving, ive just got the car back from a mop and polish from a body shop, i lock it and after a while its beep beep its not loud just a high pitch beeb beeb not a full on alarm blast, ive even put it to bed in the garage after half out to a hour guess what it went off again,

anyone got a clue to this issue
 

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mine is doing the same at the minute it beeps about 15 minutes after locking so i end up disconnecting the battery to stop it going off all the time, but it only does it through the day it never beeps at night!?
 

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The tilt sensor in the boot is a common failure. Mine went faulty without any warning or cause. It's a White square block bolted to the inner rear wing where the fuel filler is located.
 

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mine last car 320ci 2001 coupe had the same problem, i found out it was the plastic trim along the outside the window had been missing (stolen) which rattled the window and when alarm set on, wind gushed through and activated the alarm.

have a look around the edges for clues.. hope this helps
 
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