Hi guys, here's the story.

I've been getting the battery drain problem for months now. I even took it to the dealer, and they charged me 2 hours @ 150/hour only to tell me "We need more time and can't figure it out" So I told them to stop, and took the car home.

I connected my multimeter to the battery, and I found a 1.4amp draw.
I then unplugged fuses 1 by 1 to see which fuse it was that wasn't turning off.

I finally found fuse #34 (Radio). As soon as I unplugged it, it dropped to 0.07a. That's more like it!

now I'm looking for a wiring diagram so I can pinpoint exactly which piece is faulty/needs to be replaced.

Can anyone help? I'd be forever gracious!
This is for a 2008 535xi Msport if it matters.

 

You will need to have Java installed and depending on the machine may have to say "yes" to allowing it to run.

WDS BMW Wiring Diagram System - 5 E60 E61

 

Thanks. I tried that website yesterday with no luck on getting it to work. Tried it on my mac and even windows. Even turned every security piece off and it still wouldn't work for me

 

update, I went on my windows machine and played around with all my java settings. finally got it to work. Thanks

 

Yea, Java on the Mac is sort of a pain. Here's how:

(0) You need to use Safari or Firefox -- Chrome isn't 64-bit yet on the Mac, even if I find it performs better on the Mac than Firefox
(1) Download Java from http://java.com/en/download/mac_download.jsp
(2) Install Java
(3) Go to Mac System Preferences and click on the Java control panel
(4) Java control panel will open a separate window
(5) Click on the Security tab of the Java control panel
(6) Check Enable Java Content in the browser and add BMW-Planet.com to the exception list

May need to restart the browser.