How do you change the brake light bulb on Peugeot 406 hdi saloon?

To change the brake light bulb on a Peugeot 406 HDi saloon, first, open the trunk and locate the access panel behind the rear light cluster. Remove the panel and unscrew the bulb holder by turning it counterclockwise. Pull the old bulb out and replace it with a new one, ensuring it is securely seated. Finally, reassemble the bulb holder and access panel, and test the brake light to ensure it works properly.