"Zero" position of sunroof motor (link guide), checking and adjusting

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2008 Audi S4, 2008 Audi RS 4, 2008 Audi A4, 2007 Audi S4, and 2007 Audi RS 4. However, it is still accessible from the selected car via links, so may be relevant.

Checking

Zero position can only be checked when sunroof panel is installed.

Trims removed
Slide sunroof back and into closed position.
On vehicles with glass panel, slide sliding headliner completely toward rear.
In vehicles with solar panel, drive back sunroof panel.

Fig 1: Pulling Sunroof Headliner Slightly Toward Rear In And Sliding In Headliner Toward Rear

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Pull sunroof headliner slightly toward rear in - direction of arrow - and slide in headliner toward rear.
Close sunroof.

Fig 2: Guiding Pins In Center On Tilting Mechanism Must Align With Marking On Link Guide

Courtesy of VOLKSWAGEN UNITED STATES, INC.

For a correct "zero" position, guide pins - 1 - in center on tilting mechanism must align with marking - arrow - on link guide - 2 -.
In vehicles with solar panel, slide headliner with panel closed from rear toward front until it engages.

Fig 3: Coupling Plate Must Be Slid Into Guide On Sunroof Headliner At Rear

Courtesy of VOLKSWAGEN UNITED STATES, INC.

When doing this, coupling plate must be slid into guide on sunroof headliner at rear.
When sunroof is tilted open, headliner is also tilted open.