How do you change high mount rear brake light for a Lexus IS300?

To change the high mount rear brake light on a Lexus IS300, first, open the trunk and locate the access panel on the rear deck where the light is housed. Remove the panel by unscrewing or unclipping it, then disconnect the wiring harness from the old bulb. Replace the old bulb with a new one, reconnect the harness, and reattach the access panel. Finally, test the light to ensure it’s working properly.