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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E60 / E61 (2004 - 2010)

E60 / E61 (2004 - 2010)
BMW 5-Series E60 Sedan was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E61 wagon followed shortly there after. The E60/E61 5 series 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 02-20-2017, 04:20 PM
my525iwatts my525iwatts is offline
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New battery new alternator battery still losing charge

I drive a 2004 BMW 525i I bought a new battery and a new alternator but the battery is still loosing charge anyone knows why


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  #2  
Old 02-20-2017, 04:45 PM
H F H F is offline
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Welcome to the forum ...

Does the car go into sleep mode ??
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  #3  
Old 02-20-2017, 05:19 PM
JKSH JKSH is offline
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Quote:
Originally Posted by my525iwatts View Post
I drive a 2004 BMW 525i I bought a new battery and a new alternator but the battery is still loosing charge anyone knows why


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If I'm not wrong, after changing to new battery some registering is required.
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  #4  
Old 02-20-2017, 05:29 PM
my525iwatts my525iwatts is offline
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Originally Posted by H F View Post
Welcome to the forum ...

Does the car go into sleep mode ??
What is sleep mode
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  #5  
Old 02-20-2017, 05:29 PM
my525iwatts my525iwatts is offline
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What is sleep mode
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  #6  
Old 02-20-2017, 05:30 PM
H F H F is offline
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Not registering the battery is not the cause of it loosing a charge . I think you have something drawing current while the car is off ,, possibly not going into sleep mode ..
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Old 02-20-2017, 05:30 PM
my525iwatts my525iwatts is offline
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Registering like what
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  #8  
Old 02-20-2017, 05:32 PM
H F H F is offline
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Originally Posted by my525iwatts View Post
What is sleep mode
The car is basically a rolling computer . Sleep mode is when all the electronics in the car have been shut down . Registering the battery is just letting the car know it has a new battery so the car can adjust alternator charging characteristics . It's only really important if changing the type of battery acid type to AGM type , then it does matter and necessary .
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  #9  
Old 02-20-2017, 05:36 PM
my525iwatts my525iwatts is offline
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Originally Posted by H F View Post
The car is basically a rolling computer . Sleep mode is when all the electronics in the car have been shut down . Registering the battery is just letting the car know it has a new battery so the car can adjust alternator charging characteristics .
and how do i do that register it
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  #10  
Old 02-20-2017, 05:39 PM
H F H F is offline
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Originally Posted by my525iwatts View Post
and how do i do that register it
Three ways .. A wifi dongle and Icarly bmw app , diagnostic software and a lap top . And the dealer .
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  #11  
Old 02-20-2017, 05:44 PM
my525iwatts my525iwatts is offline
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okay so even if i purchased a new battery and alternator it do not make a difference
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  #12  
Old 02-20-2017, 05:51 PM
H F H F is offline
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Originally Posted by my525iwatts View Post
okay so even if i purchased a new battery and alternator it do not make a difference
Not registering ,, does not make a huge significance .. And like I mentioned ,, it's not causing the discharge problem you're facing .
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Old 02-20-2017, 05:52 PM
70383roadrunner 70383roadrunner is offline
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Originally Posted by my525iwatts View Post
okay so even if i purchased a new battery and alternator it do not make a difference
Could be a faulty KGM Module not telling the car to go into sleep mode.

Look at post #6
http://www.bimmerfest.com/forums/sho...d.php?t=485200
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  #14  
Old 02-20-2017, 05:57 PM
H F H F is offline
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Quote:
Originally Posted by 70383roadrunner View Post
Could be a faulty KGM Module not telling the car to go into sleep mode.

Look at post #6
http://www.bimmerfest.com/forums/sho...d.php?t=485200
It could be one of many modules . The thing to do is a process of elimination . Starting with the simplest thing first .

There is a cable called IBS CABLE . It's a single wire that's connected to the negative terminal . You can disconnect it , then see if the battery stops draining .
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