Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

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

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

Reply
 
Thread Tools Display Modes
  #1  
Old 02-02-2013, 02:05 AM
Kyungmo Oh Kyungmo Oh is offline
Registered User
Location: Seoul
 
Join Date: Feb 2013
Posts: 2
Mein Auto: 528i
Terminal Voltage Fault.

Hi~


I have a 2008my E60 528i (Korean ver., mileage: 50,000ml)

Sometimes my car sent a message like "Battery discharge is increased" via iDrive display, especially in cold weather.

(I translated the msg from Korean. So it can be a little different from US ver.)

So I changed my battery to new one (Bosch Silverlite DIN 80Ah 720CCA battery).

While changing the battery, I also checked a battery terminal voltage.

Unfortunately, the voltage was around 14.9-15.1V (ignition on). =_=

According to the E60 Service Manual (Bentley Publisher), normal voltage range is 13.8-14.5V.

Over 14.8V means that the generator is most likely to be faulty.

When I went to BMW Service Center to register new battery,

The mechanic said that "There was one stored over-voltage error and I erased the error by scanner tool"

After that, I replaced the generator(alternator) to re-manufactured one

from the BMW dealershop to new one.

But it doesn't solve the problem.

Re-programming the DME doesn't help, too.

I checked the voltage at the positive terminal under the hood AND the battery terminal.

Both results were the same as 14.8-15.1V.

It is also the same result as before the replacement.


What do you recommend to make it right?

It is possible that the re-manufactured voltage regulator is also faulty.

How can I check the voltage regulator is working properly?
Reply With Quote
Advertisement
  #2  
Old 02-02-2013, 08:14 PM
H F H F is online now
Officially Welcomed to the 'Fest
Location: Claremont California
 
Join Date: Mar 2010
Posts: 1,939
Mein Auto: 2005 545i
Quote:
Originally Posted by Kyungmo Oh View Post
Hi~


I have a 2008my E60 528i (Korean ver., mileage: 50,000ml)

Sometimes my car sent a message like "Battery discharge is increased" via iDrive display, especially in cold weather.

(I translated the msg from Korean. So it can be a little different from US ver.)

So I changed my battery to new one (Bosch Silverlite DIN 80Ah 720CCA battery).

While changing the battery, I also checked a battery terminal voltage.

Unfortunately, the voltage was around 14.9-15.1V (ignition on). =_=

According to the E60 Service Manual (Bentley Publisher), normal voltage range is 13.8-14.5V.

Over 14.8V means that the generator is most likely to be faulty.

When I went to BMW Service Center to register new battery,

The mechanic said that "There was one stored over-voltage error and I erased the error by scanner tool"

After that, I replaced the generator(alternator) to re-manufactured one

from the BMW dealershop to new one.

But it doesn't solve the problem.

Re-programming the DME doesn't help, too.

I checked the voltage at the positive terminal under the hood AND the battery terminal.

Both results were the same as 14.8-15.1V.

It is also the same result as before the replacement.


What do you recommend to make it right?

It is possible that the re-manufactured voltage regulator is also faulty.

How can I check the voltage regulator is working properly?
Try changing the charging relay in the trunk fuse panel...its possible that its not shutting down the alternator wen it hits 14 .5 volts and keeps charging the battery .....its a black 1inch x 1 inch square with a diagnal little handle.. its the biggest fuse , u cant miss it . only 25 bucks,,,, worth a try hope it works for u...
__________________

Last edited by H F; 02-02-2013 at 08:30 PM.
Reply With Quote
  #3  
Old 02-05-2013, 06:50 AM
Kyungmo Oh Kyungmo Oh is offline
Registered User
Location: Seoul
 
Join Date: Feb 2013
Posts: 2
Mein Auto: 528i
Thank you all!!!
Reply With Quote
Reply

Bookmarks

Tags
regulator, voltage


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E60 (2004 - 2010)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump


All times are GMT -7. The time now is 03:53 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms