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Remove the accessory hole cover; behind the door handle, then remove the screw.
Remove the cover on the door pull, then remove two screws.
Those are the only screws holding the panel.
What I would do now is insert a plastic trim at the bottom edge between the panel and the door (if no plastic tool, a thin screwdrive with tape on the head can work. Pull back, far enough to grap with your hand, then start pulling.
The panel is held in place with plastic retainers.
Also, you have to disconnect the door lock cables from the handle, and any electrical connectors from the door switches.
When installing, make sure all the retainers are removed from the door frame, and make sure they are installed on the door (they slide in place).
Make sure to connect the connectors and the door lock cables.