The fog lights are an important of the overall safety of your BMW E39. If they go out, they should be replaced as soon as possible in order to prevent potential accidents and to avoid being fined by the local authorities. The E39 uses H7 bulbs for the front fog lights and they can be purchased at most auto parts stores. Replacing the front fog lights only requires a screwdriver and replacement bulb.
Remove the keys from the ignition and open the hood.
Remove the cover panel next to the headlamp. Loosen both screws and swivel out the lamp assembly from the vehicle.
Release the spring on the back of the lamp assembly and rotate the fog light cover to the left. The fog light cover is the smallest cover on the headlamp assembly.
Release the clamp and remove the old bulb. Use a clean cloth to install the replacement bulb. Reattach the spring and place the assembly back into the vehicle.
Retighten both the screws and reattach the cover panel to the headlamp. Close the hood.
