How do you replace rear bulb on Audi a3?

To replace the rear bulb on an Audi A3, first, open the trunk and locate the access panel behind the rear light assembly. Remove the panel or the screws securing the light assembly, then gently pull it out. Disconnect the bulb holder by twisting it counterclockwise, replace the old bulb with a new one, and reassemble the light assembly by reversing the steps. Ensure the new bulb is securely in place and test it before closing everything up.