How do you replace head light bulbs in 2007 Audi A6?

To replace the headlight bulbs in a 2007 Audi A6, first, open the hood and locate the back of the headlight assembly. Disconnect the electrical connector from the old bulb and remove the bulb by twisting it counterclockwise. Insert the new bulb, ensuring it is securely in place, and reconnect the electrical connector. Finally, test the new bulb before closing the hood.