Cars Comp

1. Turn off the car completely and put on your safety glasses and gloves.
2. Open the hood, and locate the bulbs you need to change. The low beam bulb will be closer to the outside of the vehicle, and the high beams are closer to the inside, right behind the light cover near the engine.
3. Turn the bulb holder to the left, and pull it straight off, and then unscrew the burned-out bulb. Put it somewhere out of the way.
4. Twist the new bulb carefully into place using a cloth or clean gloves, without touching it directly.
5. Replace the bulb holder and tighten it into place. If more bulbs need replacing, repeat this process as necessary.

1. Turn off your Mercedes W211, and prop open the hood.
2. Tape around the silhouette of the bumper and the headlight bezel to protect the paint.
3. Remove the push-lock fasteners in each wheel well. Pry them out using your pliers, or use the screwdriver as a wedge.
4. Remove the two clips below the lower portion of the central grille, and pull this lower portion of the grille upward and away from the bumper to remove it.
5. Remove the four 8-mm screws from below the lower bumper.
6. Remove the pair of screws in each wheel well holding the lower bumper to the fender.
7. Pull the lower bumper off the bottom front of the vehicle, just below the larger bumper.
8. Remove the two 10-mm bolts that were revealed when you removed the lower portion of the grille.
9. Remove the 8-mm bolts between each headlight cavity.
10. Remove the 10-mm plastic nuts in the front wheel wells using the socket wrench. These plastic nuts are near the push-lock fasteners you removed earlier.
11. Pull out the interfender panel near the wheel well. Look for the small screw that secures the fender to the bumper clamp. Remove this screw with a #20 Torx wrench.
12. Remove the last two front 10-mm bolts near the central grille holding the bumper to the vehicle. You should have someone hold the bumper while you do this. Pull the bumper off the vehicle and set it down gently.
13. Remove the four 8-mm bolts securing each headlight.
14. Pull the headlight slightly out of its cavity, and disconnect the four wiring harnesses from the rear of the headlight.
15. Install the new headlight by connecting the four wiring harness and securing the headlight in the socket with the four 8-mm bolts. Remount the bumper, lower bumper and lower portion of the central grille using the fasteners you have already removed.

1. First, select the new headlights you want to install. The Audi TT can use a high-intensity discharge (HID) bulb or an light-emitting diode (LED) package. Choose which one you want from an auto parts store.
2. To access the headlights, you must pop the trunk and remove the headlights from behind the casings. Open the trunk and find the back of the headlight wires. These should feed right into the middle of the headlight assembly.
3. Loosen the securing screws around the headlight connection. The connection is a small plastic piece at the end of the wires. Some twisting and maneuvering may be needed to get at the screws. Loosen all the screws but do not completely remove them.
4. Once the screws are loosened, twist the headlight connector until it pulls freely out of the headlamp case. The bulb and connector will come out together.
5. Release the headlight bulb from the connector by depressing the clip or attachment (some models may have different types of clips) and pull out the bulb.
6. Insert the new bulbs by sliding them into the connectors. Replace the bulbs in the headlamp. Turn and lock them in place behind the screws, then tighten the screws to secure them.