Kia Maintenance Questions? Ask a Mechanic for Answers ASAP
In order to remove the trim on the tailgate you will need to determine what holds it to the boot lid. Have a look around the trim and see if there are any visible screws. Also see if there are any removable caps covering screws.
If you can't find any then the trim is simply held in by trim clips at the rear. You can use a trim tool which is just a plastic lever to push behind the trim to work the trim free or simply pull with your hands. they can sometimes be very tight to remove.
Hope this helps.