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      01-04-2013, 08:20 PM   #53
Blue Bimmers Rule!
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Drives: '06 Z4 M Rdstr | '11 335is E92
Join Date: Jan 2011
Location: San Diego, CA

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Originally Posted by Jstic View Post
The cabin air filter is after the outlet flap in the air flow cycle. The filter is actually part of the problem as it is within 2mm of the open flap and the leaves rest up against the filter and accumulate. If fresh air flap is left open for a long period of time, leaves and debris accumulate and once they hit the filter, they have no where to go. On my car the leaves had accumulated about halfway between the cabin filter and the inlet under the hood. Bottom line, check or change air filter regularly.
Thanks, good to know. It was such a PITA to change I tried spending as little time as possible wedged in under the glove box!
Mine: 2006 Z4 Roadster | Interlagos Blue Metallic | Black Extended Nappa Leather | Carbon Leather Trim | Premium | Navigation | Heated Seats | iPod Adapter | Purchased 7/19/12
Hers: 2011 335is Coupe | Le Mans Blue Metallic | Black Dakota Leather | Dark Glacier Aluminum | 6MT | Premium | Convenience | Heated Seats | Navigation | Harmon Kardon | iPod/USB | European Delivery 5/12/11