screw! Open the storage box and look carefully toward the front and you'll see a felt covered 'flap' that hides that screw.
After that, it a matter of using a door tool to release the plastic pop-rivits (that's what I call them) under the door's outside and then LIFTING up to release the door panel.
Theres a 'hook' apx in the center of the door that must be seated into its place to get it back together properly. It's obvious once you get the door panel off.
This info is my "COUPE"!