Does anyone have working air recirculation in his or her 240D or a similar old Benz with manual climate control? According to the manual, when the blower is turned off the cabin is supposed to be insulated from dust and "offensive odors", but this has never worked for me. Not only do odors come in at any time but I can feel the air coming in through the vents at higher speeds even with the blower turned off. I'm wondering if something is not working or if this is just how it was intended. Overall it's a fairly good and reliable climate control but one thing that's sorely missing IMO is a simple recirculation button or lever.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL