Thread: 2000 W210 E320 whistle from fresh-air setting
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  #9  
Old 12-05-2010, 09:23 AM
RPM55 RPM55 is offline
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Join Date: Jun 2002
Location: Conway, SC
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The cabin filters should be white paper type material, located behind the glove box. It sounds like you may have taken out the charcoal filters which are accessed from under the dash. You may have something interfering with the fresh air flap.

good luck, Robert
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