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      01-16-2013, 11:42 AM   #5
mcpcolas
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Drives: 2009 montego blue 335i xdrive
Join Date: Apr 2012
Location: new jersey

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It's normal it's the system switching from recirculate air from inside the cabin to outside fresh air. u can turn it off by pressing the recirculate button until that little green light disappear completely, then it's only set to outside air only