You will need: T20 TORX wrench, flat blade screwdriver.
1. Remove the front door upholstery (see «Removal and installation of an upholstery of a forward door»).
2. Use a screwdriver to press the latches securing the inner handle to the door upholstery...
3.... and remove the inner handle of the front door lock drive.
4. Install the inner handle and all removed parts in the reverse order of removal.