Audi Workshop Service and Repair Manuals
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Components in passenger compartment >
< Dust and pollen filter with charcoal filter element
A4 Mk2
Heating, ventilation, air conditioning system
Heating
Heating / Components for control of heater
Checking vent frame
Heating
Components for control of heater
Checking vent frame
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→ Check air ducts to both vent frames -A- for blockage (left and right).
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Sealing lips -B- in vent frame -A- must move freely and close automatically
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Clogged ducts can cause windows to mist up
Notes:
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Fig. shows Saloon vent frame with rear bumper removed. Avant is fitted with a different type of vent frame.
=> Parts List
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One vent frame is installed on left and right for forced air extraction.
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→ To ensure proper functioning of passenger compartment ventilation, vent openings -C- in luggage compartment lining are never to be sealed off.
Heating, ventilation, air conditioning system
Heating
Heating / Components for control of heater
Checking vent frame
Components in passenger compartment >
< Dust and pollen filter with charcoal filter element