Put on gloves to protect your hands.
When prying with a flat-tip screwdriver or use a prying trim tool, wrap it with protective tape, and apply protective tape around the related parts, to prevent damage.
Open the fuel filler door cap (A).
After loosening the mounting bolts, then remove the fuel filler door (A).
Pull out from inside of the packing part when removing the fuel filler door housing.
Install in the reverse order of removal.
Make sure the fuel filler door locks/unlocks and opens/closes properly.
Replace any damaged clips.