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E60 (2004 - 2010)
BMW 5-Series (E60 chassis) was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E60 is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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  #1  
Old 12-31-2012, 02:38 PM
gggunchi gggunchi is offline
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05 545i Battery Drain

Hey All;

Yes, yes yes *another* battery drain thread. I have an 05 545i without Comfort Access. If the car sits more than 36-48 hours the car will not start. Once it gets going there are no issues with it. Any ideas on how to fix this issue?

Thanks!

--Garrett
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  #2  
Old 12-31-2012, 04:16 PM
H F H F is offline
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how old is ur battery?
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  #3  
Old 12-31-2012, 04:17 PM
gggunchi gggunchi is offline
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Hey -

I believe its ~ 3 years old. Bosch battery. The previous owner was a member on here and last documented battery replacement was during the Summer of 2010.
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  #4  
Old 12-31-2012, 04:58 PM
H F H F is offline
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Take ur car to auto zone... theyll check ur battery for free and alternator. then go from there. maybe the battery is not holding a charge...
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  #5  
Old 01-01-2013, 07:36 AM
gggunchi gggunchi is offline
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Ok all;

Here is an update -- car sat overnight, and it worked perfectly. Electrical grimlines? I think so.
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  #6  
Old 01-01-2013, 09:40 AM
bimmerfan52 bimmerfan52 is offline
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I would be surprised if this is the end of the story.
Let us know if in a month or so it is still charging and starting.

If the battery is not on the ragged edge then the next item in line is the voltage regulator, which if it is beginning to fail can charge intermittently. Third thing to check would be something in the car not going to sleep and draining the battery over night.
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  #7  
Old 01-01-2013, 09:46 AM
gggunchi gggunchi is offline
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Well see what happens. I'll keep this thread updated as time goes along. I believe the battery is about 3 years old. So it'll probably get replaced first, which is fine, if I still experience problems it'll be time to start diagnosing stuff.
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  #8  
Old 01-01-2013, 11:57 AM
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phlfly phlfly is offline
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I had one as well and have not be able to solve. Be aware of it.
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  #9  
Old 01-01-2013, 11:58 AM
gggunchi gggunchi is offline
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Ok, so Bosch is 4 years 1 month old and is the Pep-Boys model # 49-850B.

I'm thinking this is probably the culprit, so a new battery is in order. I'm thinking about replacing it with another Bosche

http://www.pepboys.com/product/detai...ive_batteries/

or an Interstate Megatron

http://www.interstatebatteries.com/c...tery_V8%2f4.4L)

Opinions on either or?
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  #10  
Old 01-01-2013, 12:01 PM
gggunchi gggunchi is offline
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Good thing I just bought an extended warranty then.
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  #11  
Old 01-01-2013, 12:14 PM
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phlfly phlfly is offline
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Originally Posted by gggunchi View Post
Good thing I just bought an extended warranty then.
Good decision. But it would not help you to irritate to you when clock resets whenever.
I had this may he will be helpful)
So at first it was door handle, one battery later and one and half year the problem came back, clock would reset whenever, after replacing battery and after two week problem came back again, voltages were 11.8v in the morning when car running with IBS 14.5V and IBS disconnected 13.8V. So it seems to me alternator is working fine but something will not go to stand by ones in the while.

BMW dealer would tell me replace a Bluetooth unit then IBS then cluster then something well I said f... I'm done with this car.
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Last edited by phlfly; 01-01-2013 at 12:16 PM.
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  #12  
Old 01-01-2013, 12:18 PM
gggunchi gggunchi is offline
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Quote:
Originally Posted by phlfly View Post
Good decision. But it would not help you to irritate to you when clock resets whenever.
I had this may he will be helpful)
So at first it was door handle, one battery later and one and half year the problem came back, clock would reset whenever, after replacing battery and after two week problem came back again, voltages were 11.8v in the morning when car running with IBS 14.5V and IBS disconnected 13.8V. So it seems to me alternator is working fine but something will not go to stand by ones in the while.

BMW dealer would tell me replace a Bluetooth unit then IBS then cluster then something well I said f... I'm done with this car.
Have you taken a multi-meter to your car and try to narrow down where the draw is coming from? (Although that might be hard given your car is awake to test for current draw)
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  #13  
Old 01-01-2013, 12:25 PM
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are u getting any charging malfunction errors,,,, ull start getting those bfore ur alternator actually goes out,, im goen thru that right now and will replace my alternator this weekend. also think about changing the alternator relay in trunk fuse box when those start goen bad it stops the alternator from charging the battery..
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  #14  
Old 01-01-2013, 12:27 PM
gggunchi gggunchi is offline
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Previous owner replaced the alternator a couple years ago, so it should be okay. No charging errors, just has a hard time cranking, jump start the car let the battery charge and it fires right up.
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  #15  
Old 01-01-2013, 01:08 PM
gggunchi gggunchi is offline
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Ok, can anyone post up a relay diagram for the relays in the glove box fuse box please?
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  #16  
Old 01-01-2013, 01:11 PM
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Think a new battery will dial u in ,, if u still have the acid type battery , stay with it and u don't have to register and spend 500 bucks for a new battery install,,
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  #17  
Old 01-01-2013, 01:13 PM
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The diagram is in the trunk first aid compartment
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  #18  
Old 01-01-2013, 02:13 PM
bimmerfan52 bimmerfan52 is offline
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Check out these two resources - two of my favorite for understanding and troubleshooting the E60 electrical system.

Very good explanation of module control of relays.

You may also want to consider a plug-in voltmeter, which allows you to monitor your electrical system voltage before starting and during your entire drive. When my voltage regulator was failing it would start at 17V, sag down to 11V and then after 20 minutes of driving stabilize at 13V. Hard to diagnose unless you can watch it on the fly.

http://www.campingworld.com/shopping...Fal_Qgodw2IA3Q
Attached Files
File Type: pdf BMW Power Systems -Energy Mgt.pdf (6.56 MB, 101 views)
File Type: pdf BMW Power Systems - Supply.pdf (1.83 MB, 79 views)
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  #19  
Old 01-01-2013, 03:38 PM
H F H F is offline
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Quote:
Originally Posted by bimmerfan52 View Post
Check out these two resources - two of my favorite for understanding and troubleshooting the E60 electrical system.

Very good explanation of module control of relays.

You may also want to consider a plug-in voltmeter, which allows you to monitor your electrical system voltage before starting and during your entire drive. When my voltage regulator was failing it would start at 17V, sag down to 11V and then after 20 minutes of driving stabilize at 13V. Hard to diagnose unless you can watch it on the fly.

http://www.campingworld.com/shopping...Fal_Qgodw2IA3Q
nice.. good info what kinda volt meter. im thinkin bout installing actuall gauges in my car .. but the volt meter sound quick and easy
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  #20  
Old 01-01-2013, 03:48 PM
gggunchi gggunchi is offline
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Excellent information.
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  #21  
Old 01-01-2013, 03:49 PM
bimmerfan52 bimmerfan52 is offline
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Originally Posted by H F View Post
nice.. good info what kinda volt meter. im thinkin bout installing actuall gauges in my car .. but the volt meter sound quick and easy
I like the cigarette voltmeter shown in the link I provided.
You really don't need a voltmeter every day unless strange things are happening. Then run it plugged in until you troubleshoot the problem then put it back in the glove box.
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  #22  
Old 01-01-2013, 05:56 PM
H F H F is offline
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Originally Posted by bimmerfan52 View Post
I like the cigarette voltmeter shown in the link I provided.
You really don't need a voltmeter every day unless strange things are happening. Then run it plugged in until you troubleshoot the problem then put it back in the glove box.
I coulda used that volt meter few days ago when my idrive went black. and my cluster lit up like a chrismas tree.. trying to pull out my alternator at the moment.... thanks for sharing that
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  #23  
Old 01-01-2013, 06:29 PM
bimmerfan52 bimmerfan52 is offline
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Originally Posted by H F View Post
I coulda used that volt meter few days ago when my idrive went black. and my cluster lit up like a chrismas tree.. trying to pull out my alternator at the moment.... thanks for sharing that
Getting the alternator out is easy. Going back in is the hard part. Post up if you run into difficulty.
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  #24  
Old 01-01-2013, 07:58 PM
H F H F is offline
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Originally Posted by bimmerfan52 View Post
Getting the alternator out is easy. Going back in is the hard part. Post up if you run into difficulty.
Getting the wires off is,,,, kicken my b hind. Can't pull it out far enough to disconnect the plug wire,,,without damaging it,,,,
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  #25  
Old 01-01-2013, 08:09 PM
H F H F is offline
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gggunchie ,,,,,hope a new battery solves ur problem...
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