How to Change the Backup Light Bulb in the BMW M3

1. Turn the engine of the M3 off and open the trunk. Put on a pair of clean gloves.
2. Use a Phillips head screwdriver to loosen the clip at the center of the trunk lid.
3. Fold the trim panel downward and pull the bulb socket down to disengage it form the electrical connector.
4. Rotate the bulb to the left and remove it from the bulb socket. Install a replacement bulb into the socket and rotate it to the right to secure it. Reattach the socket to the trunk lid. Once you hear a click, the bulb is secured.
5. Reattach the trim and the clip. Close the trunk lid.