Panorama Sliding Sunroof Water Drains, Checking

WARNING: This page is about a different car, the 2024 Audi S6 and 2024 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Measuring container
Lint-free cloths
Industrial vacuum cleaner

Checking the Water Drains for Debris:

Glass panel opened all the way.

-- Remove any visible debris in the guide rail area using an industrial vacuum cleaner or a lint-free cloth.

-- With a measuring container -1- positioned near the open glass panel -arrow-, slowly pour 0.5L of water between the roof edge and the first rubber lip on each side. Work carefully so that water does not flow into the dry area. Pay attention that the water spreads to both directions..

Fig 1: Drain Water From Guide Rail Near Glass Cover

Courtesy of AUDI OF AMERICA, LLC

-- Check the vehicle underbody for any leaks.

-- Repeat the procedure on the other side of the vehicle.

-- If only very little or no water flows out at the respective areas, clean the water drains. Refer to WATER DRAIN HOSES, CLEANING .

NOTE:

Carefully pour the water into the guide rail on each side. If the water drain is clogged or is filled incorrectly, water can get into the vehicle interior (headliner).

The water must easily (within a minute) flow out at the front and rear water drains near the wheel housings on each side.

For the Audi A6, the water from both guide rail openings is collected in a drain hose and then runs down to the vehicle underbody through a grommet.