Plenum Chamber Water Drain, Cleaning

WARNING: This page is about a different car, the 2023 Audi SQ8, 2023 Audi RS Q8, and 2023 Audi Q8. 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-.