A6 Quattro Sedan V8-4.2L (BVJ) (2007)
Cabin Ventilation Duct: Testing and Inspection
Vent Frame, Checking
NOTE:
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Fig. shows vent frames with rear bumper removed.
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One vent frame - A - is installed on both left and right for forced air extraction.
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Sealing lips - B - only close properly if vent frame - A - has been installed correctly.
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To ensure proper functioning of passenger compartment ventilation, vent openings - B - in left and right luggage compartment lining are never to
be sealed off.
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Space between wing and luggage compartment lining must not be obstructed to avoid impedance of air flow from vent openings - B - to vent
frames - A -.
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On Sedan models, for example, air from passenger compartment flows via vent slits in rear shelf and through slits incorporated into upper lining
into luggage compartment.
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Clogged ducts or gummed sealing lips could cause windows to mist up.
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Check for blockage of air ducts from vent openings - B - on left and right to the two vent frames - A - in luggage compartment.
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With rear bumper cover removed, check sealing lips - B - in vent frames - A -(must move freely and close automatically).