Thanks for the feedback. Looking at the vehicle history, I see a fix with auxiliary fan with the previous owner:

6/21/08 40030 electric auxiliary fan pressure fan malfunction


I was just wondering if the behavior I see now is the norm, or if it is a malfunction again.

Thanks again.

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Currently driving: 2011 E70 x35i , 2011 E90 335d
Previous BMWs: 2007 E90 328i , 2005 E53 3.0i, 2011 F10 535i (6spd manual)