Removing both fresh air grilles of the headlining

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

Removing the ventilation grille in the headlining

Unclip ventilation grille (1) from headliner (2) in the arrow direction.

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Unlock plug connections (1) and disconnect.
Remove ventilation grille (2).

Courtesy of BMW OF NORTH AMERICA, INC.