How do you change the brake light bulb in Audi 2002 A6?

To change the brake light bulb in a 2002 Audi A6, first, open the trunk and remove the access panel on the rear light assembly. Disconnect the electrical connector from the bulb holder and twist the holder counterclockwise to remove it. Replace the old bulb with a new one, ensuring it's securely in place, then reassemble the components by reversing the steps. Finally, test the brake light to ensure it functions correctly.