All vehicles
WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2016 Audi S4, 2016 Audi A4 Quattro, 2016 Audi A4, 2015 Audi S4, and 2015 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
Checking
-- Check the cowl panel trim -A- for proper installation and damage. Refer to PLENUM CHAMBER COVER, REMOVING AND INSTALLING .
-- Check the seals between the fresh air intake cover -A-, the cowl and the windshield cross member -C- for damage and proper fit. These seals prevent water from entering between the window cross member and the cowl panel trim and running into the A/C intake shroud. Refer to PLENUM CHAMBER COVER, REMOVING AND INSTALLING .