Height adjustment

Close the sun roof.

Remove the apron molding.

Slacken off  the screws for the glass cover.

Fig 1: Identifying Sun Roof Height Adjustment

Courtesy of VOLVO CARS OF NORTH AMERICA.

Front edge: 

The upper section of the molding must be flush with or 1 mm under the roof panel (Dimension A).

Rear edge: 

The upper section of the molding must be flush with or 1 mm above the roof panel (Dimension B).

Calibrate.

Tighten the screws.