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E85 / E86 Z4 (2003-2008)
E85 Z4 convertible and E86 Z4 coupe talk with our BMW gurus here.

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  #1  
Old 10-24-2012, 12:58 PM
crosby68 crosby68 is offline
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Location: NORTHPORT NY
 
Join Date: Oct 2012
Posts: 8
Mein Auto: 2006 BMW Z4 M ROADSTER
Battery drain

I am still having a problem with my battery draining over a two day period. I did the fuse thing and pulled them. I could not find a fuse drain.
The next step is to take it to a BMW dealer and try to hold on to my wallet.

I just noticed somethimg last week. I do not use my radio much, so it always off when I turn off my key. I noticed when I start my car the radio automaticly comes on. Is that supposed to happen? May be it never really shust off.
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  #2  
Old 10-27-2012, 12:38 PM
969Mike 969Mike is offline
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Location: SoCal
 
Join Date: Nov 2011
Posts: 1
Mein Auto: Z4
I have the same issue, have you tried this test? When you do test it, let the tester sit for a few minutes. With my car something is turning on for a couple minutes but then turns itself back off few minutes later.

It's weird lately my car has been starting after 3 days of sitting. Also I think the radio does turn back on when you start the car.

Last edited by 969Mike; 10-27-2012 at 12:42 PM.
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  #3  
Old 10-27-2012, 02:23 PM
sportsguy sportsguy is offline
ajeepthing.com
Location: Kirkland, WA
 
Join Date: Dec 2009
Posts: 62
Mein Auto: 09 FJR1300 06 Jetta 03 Z4
Quote:
Originally Posted by 969Mike View Post
I have the same issue, have you tried this test? When you do test it, let the tester sit for a few minutes. With my car something is turning on for a couple minutes but then turns itself back off few minutes later.

It's weird lately my car has been starting after 3 days of sitting. Also I think the radio does turn back on when you start the car.
See, the problem you guys face is those aren't actual, BMW-built Z4s. They're clearly Transformers disgruntled at being left alone for long...

Only suggestion I can add is to find a non-dealer mechanic and form a relationship.
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  #4  
Old 10-28-2012, 05:00 AM
GnattheCat GnattheCat is offline
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Location: Blue Ridge, Ga.
 
Join Date: Jan 2012
Posts: 17
Mein Auto: 2008 Z4 3.0i
Battery Drain/Radio

Morning...Identify the radio circuit and pull the fuse. See if the problem continues. Enjoy your day-Gnatthecat
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