Operation is described in:
Removing and installing/replacing outside handle on left or right front door, refer to 51 21 170 REMOVING AND INSTALLING/REPLACING OUTSIDE HANDLE ON FRONT LEFT OR RIGHT DOOR (Z3 ROADSTER, M ROADSTER, Z3 COUPE, M COUPE)
Removing and installing/replacing outside handle on left or right front door, refer to 51 21 170 REMOVING AND INSTALLING/REPLACING OUTSIDE HANDLE ON FRONT LEFT OR RIGHT DOOR (Z3 ROADSTER, M ROADSTER, Z3 COUPE, M COUPE)