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Battery randomly dying


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#1 Jdmcurt

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Posted 26 October 2016 - 05:33 PM

I have a 09 for some reason the last couple months my battery will randomly die if not driven everyday, had the alt tested and it works great. So I ended up replacing the battery but three days later it started doing the same thing, anyone have any ideas on what could be causing this?

#2 Jdmcurt

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Posted 26 October 2016 - 05:34 PM

Also randomly sometimes when I get in the car the passenger side dome light will be on, but I never turn them on...

#3 xirtam

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Posted 26 October 2016 - 06:21 PM

Do you have any aftermarket electronics installed that could be draining the battery such as a upgraded alarm system?
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#4 Jdmcurt

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Posted 27 October 2016 - 06:16 AM

No aftermarket electronics installed thats the weird thing

#5 hunter

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Posted 27 October 2016 - 06:23 AM

You will need to test each side of the fuses in the box.
Only a qualified tech should do this. each positive and neg. side will be tested to see if power draw when turned off is out of spec.
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#6 tenmad899

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Posted 27 December 2016 - 06:15 AM

Some of the head units have very little current leakage. So after a couple days it will drain the battery

#7 legertas

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Posted 27 December 2016 - 12:54 PM

Usually case of this problem, av unit does not OFF amplifier. It is fixable Sent from my SM-G935F using GT-R Life mobile app

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#8 dcp2

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Posted 17 May 2017 - 11:34 AM

Legertas how do you fix this sir? My 09 started draining battery when i dont use it. Sent from my iPhone using Tapatalk

#9 stea7th

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Posted 18 May 2017 - 09:27 AM

I have the same problem after I have Renewed the battery. After a month, renewed the battery again but still the same problem Sent from my iPhone using Tapatalk
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#10 legertas

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Posted 19 May 2017 - 01:42 AM

Legertas how do you fix this sir? My 09 started draining battery when i dont use it. Sent from my iPhone using Tapatalk

 if cause of problem  AV unit ( AV unit does not turn off power of Bose amplifier -common problem for CBA  )  I have solutions : AV unit could be fixed  or I could be upgrade CBA old type entertainment system to 2016 type  DBA . - more about :  https://www.gtrlife.com/forums/topic/107620-2009-avnavigation-upgraded-to-2012-review/page__fromsearch__1 


Edited by legertas, 01 June 2017 - 12:51 AM.

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#11 dcp2

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Posted 22 May 2017 - 04:36 AM

Problem fixed i forgot to tape up the wiring for the oem seats after replacing them with recaros. Thanks Sent from my iPhone using Tapatalk

#12 dcp2

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Posted 31 May 2017 - 10:46 PM

Damn. Drained my battery again Sent from my iPhone using Tapatalk

#13 legertas

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Posted 01 June 2017 - 12:54 AM

Damn. Drained my battery again Sent from my iPhone using Tapatalk

 I said , cause of problem is  AV unit :)  . let check does any small noise come from speakers when ignition OFF


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#14 dcp2

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Posted 30 March 2018 - 12:13 PM


Damn. Drained my battery again Sent from my iPhone using Tapatalk


 I said , cause of problem is  AV unit :)  . let check does any small noise come from speakers when ignition OFF

no noise from the speaker even with the ignition on


Sent from my iPhone using Tapatalk Pro

#15 legertas

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Posted 30 March 2018 - 01:18 PM

So try to disconnect amplifier and audio unit power  for few days . For this  remove AUDIO fuse 15A ( small fuse box near the battery ) . 


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#16 aarongtr

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Posted 09 June 2021 - 10:00 AM

My battery has "died" twice and the fob becomes unreadable the car seems to have a disconnect with it. I replaced the fob battery so I know it's not that, as my car would seem to have a dead battery but then after a few minutes the car seems to "see" the fob and will start. The other day I got locked in my car when I stopped driving and parked it would not unlock the door. I manually unlocked and the window did not roll down a bit as normal does. A few minutes later all was good and the car started and the fob was recognized. I got an error code U1218 (AV control unit) is this a sign there is something wrong with the unit even though the battery never really dies for any length of time?

 

Thanks in advance folks.



#17 legertas

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Posted 09 June 2021 - 02:41 PM

.... Common cause of battery drains is AV unit . It does not turn off audio amplifiers when ignition is in off position , therefore all body electrical does not come to standby mode also! I can to fix it ! Išsiųsta naudojantis SM-G988B Tapatalk 4 Lt

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#18 AutoXGTR

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Posted 10 June 2021 - 01:04 PM

I have a 09 for some reason the last couple months my battery will randomly die if not driven everyday, had the alt tested and it works great. So I ended up replacing the battery but three days later it started doing the same thing, anyone have any ideas on what could be causing this?

 

This is a common occurance. As mentioned if you have added anything that might require power even when parked such as any electronics it will drain the battery. Modern cars have lots of computer boards and they will take power. I wonder if the battery itself isn't so good at keeping a charge when not being run often.

 

Best is to use a battery slow trickle tender hooked up if you are not driving daily.

 

I once went on a three week trip and multiple cars left at home had dead batteries all at the same time on return. If I keep the trip shorter I usually don't have trouble.


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