Necessary preliminary tasks

• Remove rear DOOR TRIM PANEL 
• Remove INSIDE DOOR OPENER 
• Remove TOGGLE SWITCH

Specification with speaker: 

• Remove speaker cover  . See 5142018 REPLACING SPEAKER TRIM ON REAR LEFT OR RIGHT DOOR TRIM PANEL  or 6513080 REMOVING AND INSTALLING/REPLACING SPEAKER (TWEETER IN REAR DOOR
• Remove SPEAKER

Specification with roller sun blind: 

• Remove ROLLER SUN BLIND 

Version with light package: 

Remove entrance light.

Cut out cutout (1) for entrance light on new door trim panel with scalpel.

Fig 1: Identifying Cutout And Entrance Light On Door Trim Panel

Courtesy of BMW OF NORTH AMERICA, INC.