Plenum Chamber Water Drain, Cleaning

WARNING: This page is about a different car, the 2024 Audi SQ7, 2024 Audi Q7, 2023 Audi SQ7, and 2023 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

Procedure

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Vehicles with High-Voltage System

-- Switch off (deactivate) the "parking air conditioner".Refer to Owner's Manual.

Continuation for all vehicles

-- Switch off the ignition.

-- Remove the plenum chamber cover -A-.Refer to PLENUM CHAMBER COVER, REMOVING AND INSTALLING .

-- Clean debris (leaves, pine tree needles) and other contamination out of plenum channel -A-.

-- Check the valves -C- of the water drains -B- for proper functioning (valves -C- must not stick or be obstructed by dirt).

Courtesy of AUDI OF AMERICA, LLC

TIP

To check the water drains -B- that are difficult to reach, use a commercially available and illuminated endoscope, for example. It is best to use a version that has a flexible waterproof head.
Use a commercially available flexible gripping tool to clean, for example coarse dirt from difficult to reach water drains -B-.Then clean the remaining dirt through the valves -C-.