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      02-08-2026, 02:06 PM   #1
Saiko
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Post '06 330i Alarm Random Activation issues

Hey guys! Weird issue that just started popping up, I can no longer lock my Bimmer with the alarm activating around 5 minutes later.
I attempted too pull the info from the DWA about why the alarm was triggered and every time I attempt to pull info from the DWA communication fails, resets, tries again, and again and again. Leading me to believe something is wrong.

I am able to trigger and test the siren itself, but accessing its fault memory always fails. I used too receive a code for an "emergency backup battery failure" but it has since disappeared since the issue occurred. I have checked my fuse box and found no blown fuses.

What should I look at? If I sit in front of the locked car, the interior lights don't turn on before the alarm goes off, so I don't believe its a door switch issue, nor the fuel pimp prime if it where the trunk.
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      02-08-2026, 02:37 PM   #2
StradaRedlands
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2007 BMW 328i E91  [10.00]
2009 BMW 328i E91  [7.56]
2006 BMW 330i  [8.17]
2007 BMW 328i  [8.83]
2013 BMW X5 35i  [8.43]
2011 BMW 528i  [9.07]
The alarm module/sensor is in the center dome light. I'd pull that down and unplug the module. Lock the car as normal and see what happens. If it locks fine, it's likely just the module and you'll need to get a new one. Here's an inexpensive module from the UK and a complete panel & module from Poland.

Last edited by StradaRedlands; 02-09-2026 at 08:13 PM..
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      02-10-2026, 09:49 AM   #3
Saiko
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Quote:
Originally Posted by StradaRedlands View Post
The alarm module/sensor is in the center dome light. I'd pull that down and unplug the module. Lock the car as normal and see what happens. If it locks fine, it's likely just the module and you'll need to get a new one. Here's an inexpensive module from the UK and a complete panel & module from Poland.
Awesome! Yes unplugging the module did fix the issue, I have a new one on the way, will report back if it fixes the issue!
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      02-10-2026, 08:30 PM   #4
StradaRedlands
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2007 BMW 328i E91  [10.00]
2009 BMW 328i E91  [7.56]
2006 BMW 330i  [8.17]
2007 BMW 328i  [8.83]
2013 BMW X5 35i  [8.43]
2011 BMW 528i  [9.07]
Quote:
Originally Posted by Saiko View Post
Awesome! Yes unplugging the module did fix the issue, I have a new one on the way, will report back if it fixes the issue!
Hopefully a plug and play solution!
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      02-18-2026, 12:50 PM   #5
Saiko
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Quote:
Originally Posted by StradaRedlands View Post
Hopefully a plug and play solution!
It got lost in shipping XD, Waiting on another atm
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