Removing the right ventilation grille

NOTE: To provide a better overview: Schematic diagram with partially hidden components.

NOTE: Description is for left component only. Procedure on the right side is identical.

Disengage the detents (1) on the ventilation grille (2).

Courtesy of BMW OF NORTH AMERICA, INC.
Disengage the detents (1) on the ventilation grille (2).
Remove the ventilation grille (2) from the decorative strip (3) at the right side.

Courtesy of BMW OF NORTH AMERICA, INC.