As of 2010 the Focus has been a staple in the Ford Motor Company line up for ten years. The small, four cylinder front wheel drive auto comes with manual or automatic transmissions. A variety of power assisted options are available such as windows, locks, mirrors, as well as radio and trim upgrades. Your Focus uses halogen headlight bulbs, as well as incandescent bulbs for the tail lights, indicators, back up lights, and interior dome light. Check all of the Focus’ bulbs as part of your regular maintenance regimen and replace burnt out bulbs as soon as possible.
Open the bonnet to replace a headlight bulb. Remove the black plastic splash shield by pulling it straight up until the retaining clips release. Place the cover aside. Locate the rear of the headlight assembly and rotate the headlight bulb socket in a counterclockwise direction. Pull the socket from the rear of the headlight and pull the bulb straight out of the socket. Insert a new bulb into the socket. Push the socket into the hole in the rear of the headlight and turn it in a clockwise direction until it locks into place.
Replace a front turn signal or parking light bulb in the same fashion as replacing a headlight bulb. Push the splash shield into position until it snaps into place when you are finished.
Remove the rear interior plastic trim cover when replacing a rear turn signal, tail light, or back up light bulb. Remove the cover by loosening and removing the thumb nut in a counterclockwise direction. Pull the trim cover away from the inside of the car body and place it aside. Remove the tail light retaining screw from inside the vehicle with a Philips screwdriver.
Pull the tail light assembly away from the outside of the car body until the retaining clip releases. Rotate the bulb socket in a counterclockwise direction for the bulb you want to replace. Pull the bulb from the socket and insert a replacement. Install the socket, tail light, and trim in the reverse order.
Replace a dome light bulb by prying the light assembly away from the ceiling panel with a flat blade screwdriver. Pull the bulb straight tout of the socket and insert a new bulb in its place. Push the dome light assembly back into its cavity in the ceiling panel until it snaps into place.