11.25 volts

exadius · 03-01-2010, 01:23 PM

I had not dirven my M3 for over a week and the comfort access failed. I had to use the key fob to open the door. After a visit to my dealer I learned that when the batery reaches 11.25v it starts powering off various systems. First is the CA and for some strange reason the clock. No wonder they sell a trickel charger.

MrHarris · 03-01-2010, 01:28 PM

At least it's a warning sign?

sikoskul · 03-01-2010, 02:48 PM

Good to know, thanks.

King Tut · 03-01-2010, 02:59 PM

If your voltage got that low after a week then I would think that you have some kind of small drain on the charging system, and I would get it checked out. I know many of us have gone longer than that not driving the car and had no issues.

montreal red · 03-01-2010, 03:04 PM

my car's systems start failing after 10 days cos i have a gps tracking device installed in it that drains the batteries overtime when the car is not in use.

so i plug it to a battery maintainer if i have to be gone for extended periods of time.

03-01-2010, 01:23 PM	#1
exadius Private 3 Rep 90 Posts Drives: Space Grey E92 M3 M-DCT Join Date: Mar 2008 Location: Seattle, WA iTrader: (0)	11.25 volts I had not dirven my M3 for over a week and the comfort access failed. I had to use the key fob to open the door. After a visit to my dealer I learned that when the batery reaches 11.25v it starts powering off various systems. First is the CA and for some strange reason the clock. No wonder they sell a trickel charger.
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03-01-2010, 01:28 PM	#2
MrHarris yodog 197 Rep 5,026 Posts Drives: '86 Corolla Join Date: Jun 2007 Location: Diamond Bar, Ca iTrader: (5) Garage List 2009 BMW [10.00]	At least it's a warning sign? __________________ 2009 E92 M3 \| Alpine White \| Black Extended \| Advan RS \| Turner Test Pipes \| Dinan Axle-Back \| OETuning \| Eibach Springs \| UUC SSK \| VRS Front Lip \| VRS Type I Diffuser \| Matte Black \| RPi Scoops \| MS Filter \| Yokohama AD08 \| F1 Pinnacle Special Thanks: Gintani \| OETuning \| eAs
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03-01-2010, 02:48 PM	#3
sikoskul Private First Class 11 Rep 126 Posts Drives: 18 M2 Join Date: Mar 2007 Location: Riverside iTrader: (1)	Good to know, thanks.
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03-01-2010, 02:59 PM	#4
King Tut NASA SpecE30 Racer 82 Rep 1,307 Posts Drives: 2006 Honda S2000 TT3 Join Date: Jul 2008 Location: Gulf Breeze, FL iTrader: (2)	If your voltage got that low after a week then I would think that you have some kind of small drain on the charging system, and I would get it checked out. I know many of us have gone longer than that not driving the car and had no issues. __________________ King Tut 2012 BMW M3 Individual: Sold lsb.ridedomain.com 1987 BMW 325is SpecE30: spece30.ridedomain.com 2009 BMW M3 Coupe: Sold e92.ridedomain.com
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03-01-2010, 03:04 PM	#5
montreal red chris 278 Rep 12,144 Posts Drives: White Boat Join Date: Jun 2007 Location: Toronto iTrader: (31)	my car's systems start failing after 10 days cos i have a gps tracking device installed in it that drains the batteries overtime when the car is not in use. so i plug it to a battery maintainer if i have to be gone for extended periods of time. __________________ Current: 2013 F10 M5 & 2016 Mini JCW 2013 GLK350 (gone), 997.1 GT3RS (gone), 2009 WRX STI (gone), e92 M3 (gone)
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