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E63 / E64 6 Series (2004 - 2010)
The E63/E64 BMW 6 Series builds on BMW's sporty heritage with aggressive lines and an incredible motor to back the design up. Available in coupe and convertible trims with a standard 4.8 liter engine producing 360 horsepower and 360 lb-ft of torque, the 6-series is a popular choice that exceeds expectations.

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  #1  
Old 12-29-2015, 07:47 AM
rebel.ranter rebel.ranter is offline
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Location: Cork, Ireland
 
Join Date: Jul 2007
Posts: 797
Mein Auto: M6, 630i, 320iC
E63 Alarm Siren Error code 9D12

So for the past 2-3 months I've had a fault code pop up on the 630i under the DWA (alarm) module. The code indicates that the internal batteries inside the siren are expired. BMW throw away the siren in this case as that's what it says to do in DIS and ISID.
The unit is over 200 Euro (~$220 USD) new but all that is wrong is the batteries in side are gone. They are camera batteries, CR17335 (CR123A) 3V to be specific. About 4 Euro (~$5 USD) each, you need 2 of these. Big price difference compared to a new unit!

The batteries are there so that the alarm can still sound if a car thief disconnects the car battery. The siren is located behind the rear bumper on the right hand side of the car. Same general area for both 5 and 6 Series. Probably the same for the e90 3 Series too.

So I got to work removing the bumper, I only needed to partially remove the bumper to expose the bumper carrier. The siren is located behind the carrier.







The BMW siren is actually a Gemel unit:









Batteries CR123A from Panasonic did the trick:



It was an easy enough job to undertake and I just finished in time for the 24hr rain deluge that is underway right now!

Anyway I cleared the error and it has not come back! Result!
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Current cars
1996 e36 320iC (convertible)
2006 e63 630i Sport w/SMG
2007 e63 M6


Previous Cars: 2002 e39 525iA Sport, 1994 e36 318i, 1990 e34 520i, 1989 e30 325i, 1986 e30 316

Last edited by rebel.ranter; 12-29-2015 at 09:06 AM.
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  #2  
Old 12-29-2015, 08:07 AM
drzoom drzoom is offline
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Location: Austin, TX
 
Join Date: May 2013
Posts: 61
Mein Auto: 2001 330i, 2009 650i
Great DIY report! Thanks for sharing.
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2009 650i Sport
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  #3  
Old 12-29-2015, 08:15 AM
KwlAznKid KwlAznKid is offline
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Location: Los Angeles/Fremont
 
Join Date: Nov 2004
Posts: 153
Mein Auto: E46 325 CI
great work! did your door unlock/lock beeps sound quieter before this happened?
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BMW E64 650I- H&R Springs, BBS LM reps, 8000K HID, 8000K HID fogs, Custom Exhaust, Interior LEDs, Vinyl Amber Cover, LED Sidemarkers, Carbon Fiber Roundel, Vorsteiner Rep Spoiler, Black Kidney Grills
Mercedes Benz W209 CLK500- 8000K HID, Resonator Delete, Mangaflow Muffler, Black Grill
BMW E92 335I (SOLD) / BMW E46 M3 (SOLD) / BMW E92 328I (SOLD)
Porsche 996 Carrera (SOLD) / BMW E46 325CI (Totaled)
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  #4  
Old 12-29-2015, 09:04 AM
rebel.ranter rebel.ranter is offline
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Location: Cork, Ireland
 
Join Date: Jul 2007
Posts: 797
Mein Auto: M6, 630i, 320iC
I can't say that the siren was quieter. The purpose of the batteries are to allow the siren to continue going off when the car battery is disconnected.
__________________
Current cars
1996 e36 320iC (convertible)
2006 e63 630i Sport w/SMG
2007 e63 M6


Previous Cars: 2002 e39 525iA Sport, 1994 e36 318i, 1990 e34 520i, 1989 e30 325i, 1986 e30 316
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  #5  
Old 12-29-2015, 09:47 AM
KwlAznKid KwlAznKid is offline
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Location: Los Angeles/Fremont
 
Join Date: Nov 2004
Posts: 153
Mein Auto: E46 325 CI
Quote:
Originally Posted by rebel.ranter View Post
I can't say that the siren was quieter. The purpose of the batteries are to allow the siren to continue going off when the car battery is disconnected.
ah i see! thanks for the clarification
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BMW E64 650I- H&R Springs, BBS LM reps, 8000K HID, 8000K HID fogs, Custom Exhaust, Interior LEDs, Vinyl Amber Cover, LED Sidemarkers, Carbon Fiber Roundel, Vorsteiner Rep Spoiler, Black Kidney Grills
Mercedes Benz W209 CLK500- 8000K HID, Resonator Delete, Mangaflow Muffler, Black Grill
BMW E92 335I (SOLD) / BMW E46 M3 (SOLD) / BMW E92 328I (SOLD)
Porsche 996 Carrera (SOLD) / BMW E46 325CI (Totaled)
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  #6  
Old 01-23-2016, 07:04 AM
theworkerb theworkerb is offline
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Location: England
 
Join Date: Aug 2015
Posts: 160
Mein Auto: 645CI
Just a quick snap of how you can rest the bumper:


The connector:


The rivet on the underside of the bumper:


Use this opportunity to clean out the crud from the lip on the back of the bumper:


Give everything else a quick wipe down:
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