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Car Navigation, Audio & Electronics
BMW navigation, audio upgrades, XM Radio, Sirius, Bluetooth, and Radar Detector discussions here!

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  #1  
Old 11-12-2007, 07:32 AM
max.lamers max.lamers is offline
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Location: Monona, WI
 
Join Date: Nov 2007
Posts: 4
Mein Auto: 2003 325i
e46 325i HU turns itself off after 20 min

Hi,
I recently purchased a used 2003 325i and I think someone has wired the HU and ipod interface incorrectly. This is the factory HU and BMW ipod adapter. There are 2 main symptoms.
1. HU turns itself off after 20 min while driving. I can turn it right back on and it picks up where it left off. It doesn't matter which mode is selected; it turns off every time.
2. The HU does not turn off with the ignition.
Does someone have a proper wiring diagram or ipod adapter install instructions that I can reference?
Thanks
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  #2  
Old 11-12-2007, 08:25 AM
Technic's Avatar
Technic Technic is offline
Test... 1, 2 ,3
Location: Florida
 
Join Date: Jun 2002
Posts: 5,173
Mein Auto: 2015 320i
Quote:
Originally Posted by max.lamers View Post
Hi,
I recently purchased a used 2003 325i and I think someone has wired the HU and ipod interface incorrectly. This is the factory HU and BMW ipod adapter. There are 2 main symptoms.
1. HU turns itself off after 20 min while driving. I can turn it right back on and it picks up where it left off. It doesn't matter which mode is selected; it turns off every time.
2. The HU does not turn off with the ignition.
Does someone have a proper wiring diagram or ipod adapter install instructions that I can reference?
Thanks
It seems to me that the ACC line into that OEM HU has been replaced by a constant 12V line... that will explain the 20 minute shut off (that's a feature and not a fault, you can play the radio without a key for those 20 minutes), and why the HU does not turn off with ignition: http://www.bimmerboard.com/forums/posts/26961

I would pay attention to the way pin 5, the ACC line in your OEM main radio harness is connected to the OEM iPod adapter.
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  #3  
Old 11-30-2007, 09:17 AM
max.lamers max.lamers is offline
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Location: Monona, WI
 
Join Date: Nov 2007
Posts: 4
Mein Auto: 2003 325i
It was a fuse

Turns out that a fuse was blown that recognized whether the car had the key in the ignition. It was working like the car was off at all times.
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  #4  
Old 03-25-2010, 01:31 PM
Icemanleo Icemanleo is offline
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Location: Chicago
 
Join Date: Oct 2009
Posts: 70
Mein Auto: 2004 325i
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Originally Posted by max.lamers View Post
Turns out that a fuse was blown that recognized whether the car had the key in the ignition. It was working like the car was off at all times.
What fuse # would that be?

edit: N/M is fuse 7.... if fuse 7 is out the radio wil be turning off every 20 min. and it won't shut off when you turn the car off

Last edited by Icemanleo; 03-28-2010 at 09:28 PM.
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