Condensation Water Drain, Checking

WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

For complaints of moisture in passenger compartment, check the following as well as condensation water drain:

-- Plenum chamber water drains. Refer to PLENUM CHAMBER WATER DRAIN, CHECKING .

-- Check the plenum chamber cover and the fresh air intake housing for proper installation and damage. Refer to FRESH AIR INTAKE, REMOVING AND INSTALLING .

-- The dust and pollen filter for soiling and correct installation. Refer to DUST AND POLLEN FILTER, REMOVING AND INSTALLING .

-- The forced air extraction via the luggage compartment. Refer to VEHICLE INTERIOR FORCED AIR EXTRACTION, REMOVING AND INSTALLING .

-- The back pressure door/fresh air door activation and function. Refer to Fresh Air Door Motor -V438- FUNCTION, REMOVING AND INSTALLING ) and air recirculation door (refer to Recirculation Door Motor -V113-, REMOVING AND INSTALLING ) for example, via the "output diagnostic test mode" function of the Guided Fault Finding. Use the Vehicle Diagnostic Tester in the"Guided Fault Finding" function.