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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 05-01-2010, 09:34 PM   #1
Registered User
Join Date: Nov 2007
Location: Lone Tree, Colorado
Posts: 101
My Ride: 2003 325i , 03 R1
$5 Alternative for Lock beep

***Update for video clip and siren test!!***
Hey guys this is my first DIY so please dont burn me too bad lol.
Pics taken from my phone, ill get some better ones up soon.

I got the idea from the GodsSon lockbeep thread.

This is just a more simplified process and is just for entertainment.


After speaking with a tech at the dealership. They confirm that this will only work with vehicles ARE programed to flash. It usually cost about $60 to have them do it.

Sorry for not putting that info out there sooner.
My vehicle is already programmed to flash the lights and the clown nose. If yours isnt programmed it can be done at the dealer.


T-30 torx
Electronic buzzer- Radio Shack 90dB Piezo Pulse Model: 273-060

Time: 45 minutes easy DIY

Step one:

Remove the twist clips holding down the cover to the cabin air filter. Remove cover and filter.

Step two:
Remove (4) T-30 torx screws holding the filter tray and carefully separate the wire harness from the loom.

Step three:
Remove (2) torx screws holding the protective cover for the blend air box. There is one to the left side by the A/c charging port and the other by the DME.

Step four:
Locate pre-wired alarm siren plug. Usually taped to the left side.

Step five
Locate Black wire w/ Blue stripe far left, bottom hole.
Then locate Brown wire w/ Black stripe left upper hole.

Step six:
Pin the ground wire into the lower left hole.
Pin the positive wire into the upper left hole.

~~~ Test your key.

Step seven:
After deciding where you want to mount your buzzer mount it down with double-sided tape this is where I mounted mine.
** Switch for a bigger buzzer so that the sound is louder***

Step eight:
Put everything back together and enjoy.
if you got any questions please feel free to ask.

****Bonus!! Buzzer/ siren doubles as an alarm*******


work in progress.....

$5 Lock Beep DIY- http://forum.e46fanatics.com/showthread.php?t=761104

Last edited by tranceasia8; 05-05-2010 at 08:54 PM.
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