If the wind deflector is replaced

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Remove the wind deflector holder

Release the detents in sequence (1), (2) and (3) each in the direction of the arrow.
Slide the holder back to the recess (4) and out of the frame.

Courtesy of BMW OF NORTH AMERICA, INC.

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Install the holder for the wind deflector

Insert the holder (1) with the spring (2) into the recess (3) from the top.
Slide the holder (1) forward until the retaining lugs engage.
Make sure the holder (1) has engaged correctly.

Courtesy of BMW OF NORTH AMERICA, INC.

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