Only for removing luggage compartment lid lock (trunk lid lock upper part):

Remove tailgate trim panel, refer to 51 49 008 REMOVING AND INSTALLING (ENTIRE) TAILGATE TRIM (Z3 COUPE, M COUPE) 

Lift out actuating rod (1).

Fig 1: Releasing Luggage Compartment Lid Lock

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten screws (2).

Push luggage compartment lid lock (3) into tailgate and to right.