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General E46 Forum
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Old 09-18-2013, 11:43 AM   #1
Antti
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Join Date: Sep 2013
Location: Finland, Europe
Posts: 147
My Ride: E46 325i ///Mpackage
fault code: "12 Powerwindow: open circuit motor or relay passenger side behind"

Hi to all!

Car: E46 330CIA Convertible 2004 with 138.000kilometres.

Problem with passenger side rear window:

Sometimes when i open electric roof, right rear window would not return normally up after roof cycle has finished.

If i try manually lift window up from that window individual switch, it would not go up. Only down direction works.
Then i have to move electric roof in some direction, and after that test that switch for up then window will raise normally. Sometimes if i turn car ignition power off and on back then i am able to lift window up.
Problem is only that one rear window, all 3 other windows work perfectly.

I took INPA and look for fault codes. There was no codes in the roof control module, but in the Central body electronics module there was this code:

12 power window: Open circuit motor or relay passenger side behind.
Error frequency 9 Sporadic error
Errorcode 0C 09


Do you have any ideas what should i replace first?


Last edited by Antti; 09-19-2013 at 02:49 AM.
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Old 09-18-2013, 11:57 PM   #2
Antti
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Join Date: Sep 2013
Location: Finland, Europe
Posts: 147
My Ride: E46 325i ///Mpackage
I will change that GM5 module rear window relays first.
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Old 09-26-2013, 12:05 AM   #3
Antti
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Join Date: Sep 2013
Location: Finland, Europe
Posts: 147
My Ride: E46 325i ///Mpackage
Now the rear windows relays has been replaced, i will test periodically rear windows. It is way too cold for opening roof in this time of year.

Module fixed:






Last edited by Antti; 09-26-2013 at 12:05 AM.
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Old 10-07-2013, 11:35 PM   #4
Antti
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Join Date: Sep 2013
Location: Finland, Europe
Posts: 147
My Ride: E46 325i ///Mpackage
There has not been any more rear window faults, so i suppose problem is now fixed. Car is now in the winter storage.
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