How to Replace Rear Light Bulbs in an Audi A4

1. Open the trunk of the car. Reach behind the taillight with the broken bulb and locate the carpeted access panel on the back side of the taillight. Open up the panel using your hands.
2. Reach inside to the plastic panel on the back side of the taillight. Squeeze the plastic tabs on the sides of the panel with your hands and pull the panel off of the taillight.
3. Twist out the taillight bulb which you want to remove from the plastic panel. Install a replacement bulb into the panel, also using a twisting motion.
4. Push the plastic panel back into the back side of the taillight until it clicks in place. Close the carpeted panel and shut the trunk.