Partially install the B-pillar trim panels at the top left and right

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

Install the top B-pillar trim panel partially

Guide in the B-pillar trim panel (1) at the top on the headliner and clip into the clips (2) .
Check the front and rear of the B-pillar trim panel (1) for the correct fit at the edge protection.

Courtesy of BMW OF NORTH AMERICA, INC.