Battery drain

Kbudz94 · 11-30-2020, 07:21 PM

Hey guys in the kingston ottawa area. Looking to get some electrical shit fixed on this german POS xD I love it I'm joking. But seriously if this car is dead one more time coming out to it in the AM I'm gunna loose it

Nick.B · 11-30-2020, 09:45 PM

How old is the battery?

TheBigSwede · 12-02-2020, 08:38 PM

Do you keep an odb device plugged in? I realized that was causing a parasitic drain on mine.

Ali-E90 · 12-03-2020, 08:19 AM

I suspect a similar issue on my car.. and I've replaced (and registered/coded) with an OEM AGM battery twice now! I suspect it may be due to my dashcam, which is hardwired but is supposed to stop drawing power when battery voltage gets below a certain level. Unsure if that power management device isn't cutting off the power, or what. Haven't had time to look further.

I do also have an aftermarket stereo, but confirmed that the amps do turn off when the car is off, so I'm less suspicious of that vs. the dashcam.

eljay · 12-21-2020, 07:54 AM

Quote:

Originally Posted by Nick.B

How old is the battery?

Have the battery checked to rule it out.

If you don't have any known added aftermarket culprits, then comes the fun part of discovering any loose/weak connections around the car.

magico · 12-21-2020, 11:03 AM

Have you looked at the little sight glass at the top of the bmw battery? It should be green for good and black means it needs replacing IIRC

Also, any chance your bluetooth is remaining connected and making the stereo head unit stay powered?

11-30-2020, 07:21 PM	#1
Kbudz94 Private 5 Rep 91 Posts Drives: BMW 335i Join Date: Oct 2019 Location: Kingston Ontario iTrader: (1)	Battery drain Hey guys in the kingston ottawa area. Looking to get some electrical shit fixed on this german POS xD I love it I'm joking. But seriously if this car is dead one more time coming out to it in the AM I'm gunna loose it
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11-30-2020, 09:45 PM	#2
Nick.B Second Lieutenant 56 Rep 272 Posts Drives: 335i, 330i, 335xi, 6MT sport Join Date: May 2014 Location: Calgary, Canada iTrader: (3) Garage List 2011 335i [0.00] 2006 E90 330i [0.00]	How old is the battery?
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12-02-2020, 08:38 PM	#3
TheBigSwede Enlisted Member 6 Rep 49 Posts Drives: 2009 335d m-sport- JR stg 2 Join Date: May 2015 Location: GTA iTrader: (0)	Do you keep an odb device plugged in? I realized that was causing a parasitic drain on mine.
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12-03-2020, 08:19 AM	#4
Ali-E90 Colonel 379 Rep 2,365 Posts Drives: 2007 E90 323i (Cdn) Join Date: May 2013 Location: Toronto, Canada iTrader: (3) Garage List 2008 BMW M3 [8.00] 2007 BMW 323i [8.50]	I suspect a similar issue on my car.. and I've replaced (and registered/coded) with an OEM AGM battery twice now! I suspect it may be due to my dashcam, which is hardwired but is supposed to stop drawing power when battery voltage gets below a certain level. Unsure if that power management device isn't cutting off the power, or what. Haven't had time to look further. I do also have an aftermarket stereo, but confirmed that the amps do turn off when the car is off, so I'm less suspicious of that vs. the dashcam. __________________ Check out my Mod Thread Here
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12-21-2020, 11:03 AM	#6
magico Private 9 Rep 68 Posts Drives: 2006 E90 325i BSM ZSP 6MT Join Date: Nov 2012 Location: GTA iTrader: (0)	Have you looked at the little sight glass at the top of the bmw battery? It should be green for good and black means it needs replacing IIRC Also, any chance your bluetooth is remaining connected and making the stereo head unit stay powered? __________________ E90 2006 325i - 6MT - BSM
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