Question about 2004 BMW 3 Series

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How do I get the alarm sound works.

How do I get the alarm sound works. Right now, when I activate the alarm it doesn't beep, but the red light flashes.

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The alarm beep was a option that was dealer installed. It has a factory option installed at the dealer. The siren itself is up front under the right front(passenger side ) of the cowl. If you remove the cover for the micro filter and the micro filter and look under cowl you should see the siren. If it is not there then you would have to buy the alarm system and have it installed and coded to the vehicle. If it is already there then it may have to be coded by the dealer to make it sound when locking and unlocking thru flash coding. Did it ever make a sound? If so it is there and may be a bad siren?

Posted on Dec 18, 2014

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Posted on Jan 02, 2017

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SOURCE: how to activate alarm 2001 bmw 325ix

The flashing light does not mean you have an alarm. They were not standard in the 3-series.
You can get one installed or if you want the dealer can program the lights to flash when locking and unlocking doors even with out alarm. This is called "acknowledgement without DWA"

Posted on May 27, 2009

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