Lever out the cover (with "Airbag" on it) above the height adjust slider. Remove the screw beneath. The trim gently pulls free (it has clips on the back) When you replace, you have to line up the black square on the inner height adjust mechanism with the hole on the back of the outer sliding handle; and snap trim in place, also pull the door seal rubbers over the trim edge.
There's no air bag behind the trim, its in the headliner
There's no air bag behind the trim, its in the headliner