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Old 12-29-2009, 10:48 PM   #8
JTP
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Join Date: Aug 2009
Location: MD
Posts: 628
In general, you don't want to set the air intake to recirculate if you want to defrost. You always want fresh air circulating through the cabin to remove the moisture that your body emits plus the snow melting off your shoes adds to the humidity level. If your system can't keep up, cracking the window open alittle helps to remove some moisture from the cabin.

Make sure the cowl under the windshield wipers are clear of snow. The fresh air intake is in that area.

Some cars such as my VW, will disable the recirculate feature if you have it set to defrost. I don't remember what my Boxster does, never had to do it.
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