The Mercedes-Benz C280 headlight assembly is a plastic enclosure that houses the halogen headlight and the single filament turn signal. The Mercedes headlight enclosure mounts to the vehicle with two bolts on the top and two bolts on the bottom. You can replace the headlight enclosure via the engine bay as the lights mount to the front bumper fascia.
Locate the socket for the halogen light bulb. It is located on the backside of the enclosure and has several wires coming out of the back of it. Turn the socket counterclockwise and pull the socket out of the enclosure.
Turn counterclockwise the single filament bulb socket on the corner of the enclosure closest to the fender, and pull the bulb out of the enclosure.
Remove the two bolts that secure the top of the enclosure to the radiator support with a socket and ratchet.
Remove the two bolts that secure the bottom of the enclosure to the bumper fascia with the socket and ratchet.
Pull the enclosure out through the engine bay and place the new enclosure into the Mercedes.
Secure the top and bottom of the enclosure to the Mercedes using the four bolts, socket and ratchet.
Place the single filament socket into the new enclosure and turn it clockwise to lock it.
Place the halogen socket into the enclosure and turn it clockwise to lock it.
