Removal and installation rear door sill trims
1. Holding the shaded areas in the figure, detach the strip A by pulling the rear sill trim in the direction of the arrow (1) in the figure, then detach the hook B, clips C and pins D by pulling in the direction of the arrow (2).
2. Grasp the shaded areas in the figure and detach the strip E by pulling the rear sill trim in the direction of the arrow (3) in the figure, then detach the hook F by pulling in the direction of the arrow (4).
3. Installation is carried out in the reverse order of removal.
The primary source is the website Mazbook