Necessary preliminary tasks

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Remove COVER FOR CAPPING on left
Remove FLAP IN LUGGAGE COMPARTMENT ON LEFT
Remove FRONT TRIM FOR LUGGAGE COMPARTMENT FLOOR

Release screws (1).

Release expansion rivets (2).

Disconnect plug connection at socket (3).

Fig 1: Identifying Plug Connection, Expansion Rivets And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1) and remove trim (2).

Lever out trim (3) in direction of arrow and remove.

Feed out luggage compartment wheel arch trim (4) in inwards direction.

Fig 2: Removing Trim

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Guides (1) and catches (2) on trim (3) must not be damaged.

Fig 3: Identifying Guides And Catches On Trim

Courtesy of BMW OF NORTH AMERICA, INC.