A3 L4-2.0L Turbo (BPY) (2006)
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dust and pollen filter for soiling, Refer to => [ Dust and Pollen Filter ] See: Cabin Air Filter/Service and Repair/Dust and Pollen Filter.
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Forced air extraction of passenger compartment. Refer to => [ Vent Frame, Checking ] See: Testing and Inspection/Component Tests and General
Diagnostics/Vent Frame, Checking.
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Passenger compartment for water penetration.
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Fresh air intake from plenum chamber and water drain of plenum chamber. Refer to => [ Plenum Chamber Water Drain, Checking ] See:
Evaporator Drain Tube/Testing and Inspection.
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The seals between the fresh air intake components and vehicle for damage and proper seal.