Install the central locking button

• Correctly position the central locking button (3) on the decorative trim (2).
• Clip the central locking button (3) into the detents in the marked area.
• Connect plug (1).

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Refer to INSTALLING FRONT DOOR TRIM PANEL .
• Refer to MOUNTING MIRROR TRIANGLE COVER .