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Ford Focus Headlight Bulbs Replacement Guide
How to change a low beam, high beam, turn signal or front side marker light bulb in an MK3 2011-2014 Ford Focus.

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2012 Focus SEL Headlight
Remove Torx T-30 Screw
Outer Screw Removed
This automotive tutorial was specifically written to assist owners of the MK III third generation (2011, 2012, 2013 & 2014) Ford Focus in changing a burnt out low beam, high beam, front turn signal or front side marker light bulb in the headlight assemblies.

Owners of other similar Ford sedan or hatchback vehicles such as the Fiesta, Fusion, Taurus and C-Max may also find these DIY instructions to be helpful.

Replacement bulbs with their part numbers are as follows: Low Beam # H11, High Beam # H1, Turn Signal # 7440 and Front Side Marker # 168NA ("natural amber" colored glass).

The only tool needed to change any of the headlight bulbs in either the driver or passenger side housing is a Torx T-30 star bit screwdriver.

Remove Inner T30 Screw
Two Screws Removed
Pull Off Headlight Assembly
The first two steps are to pop open the hood and then move to the side of the vehicle with the burnt out bulb.

Locate the two screws that hold the headlight assembly in place. One screw is near the outer edge and the other is at the inner corner.

Remove the two screws by turning them counter clockwise with a Torx T-30 star bit screwdriver. Set the two screws aside in a safe place.

Turn Over Headlight Housing
Low Beam - Center of Housing
Pull Off Rubber Dust Cap
Gently pull the headlight housing straight off the front of the car.

Turn over the housing and rest it on the bumper. To avoid scratching the plastic lens or the painted bumper, place a towel in between them.

Rubber Cover Removed
Low Beam Bulb Exposed
1/4 Turn Counter Clockwise
The Low Beam bulb is located at the center of the headlight assembly.

Pull off the rubber dust cap on the rear of the housing to access the base of the old low beam bulb.

Rotate the base of the bulb 1/4 turn counter clockwise to unlock it.

Remove Low Beam Bulb
Disconnect Power Plug
Philips H11 LL 12V 55W
Pull the old low beam bulb straight out of the housing.

Pry up the black plastic tab on the electrical connector before sliding it straight off the bottom of the old bulb.

Low Beam Bulb Socket
Insert New H11 Bulb
1/4 Turn Clockwise - Lock
Try to avoid touching the glass part of the new halogen bulb with your fingers or anything greasy in the engine bay.

If you do get the new bulb dirty, wipe off the glass with an alcohol moistened paper towel.

Insert the new H11 low beam bulb in to the housing and rotate it 1/4 turn clockwise to lock it in place.

New Low Beam Bulb Installed
Push On Rubber Cover
High Beam - Inner Corner

Push the rubber dust cap back in place over the low beam bulb access opening.

The High Beam bulb is located at the inner corner of the headlight housing.

Pull Off Rubber Dust Cap
Rubber Cover Removed
Press Plug Release Button
Pull off the rubber cover on the back of the headlight behind the high beam bulb.

Press in on the black plastic release button before sliding the power connector straight off.

Pull Off Electrical Connector
Showing Release Tab
Push In To Release Plug
The pictures above show a closer view of how the retaining clip on the high beam bulb power plug works.


High Beam Bulb Exposed
Ford-Focus-Headlight-Bulbs-Replacement-Guide-029 Ford-Focus-Headlight-Bulbs-Replacement-Guide-030
Pull Out Old High Beam
Grasp the metal base of the old high beam bulb and pull it straight out of the housing.
High Beam Bulb Socket
Osram Germany H1 12V 55W
Insert New H1 Bulb
Insert a new # H1 bulb straight in to the socket.

Due to the round shape with one flat edge, the bulb can only be inserted in one way.

New High Beam Installed
Push On Power Plug
New High Beam Installed
Gently push the black plastic electrical connector straight on to the base of the new high beam bulb.

Push the rubber cover back in place over the high beam bulb opening.

Push On Rubber Cover
Underside of Housing
Turn Signal Light At Bottom
The Turn Signal bulb is located at the lower inner corner of the headlight housing.
1/4 Turn Counter Clockwise
Plastic Dust Cap Removed
Turn Signal Bulb Socket
Rotate the black plastic cover 1/4 turn counter clockwise to expose the turn signal bulb socket.

Set the dust cap aside in a safe place.

1/4 Turn Counter Clockwise
Remove Turn Signal Socket
Pull Out Turn Signal Bulb
Reach in and rotate the black plastic turn signal bulb socket 1/4 turn counter clockwise before pulling it straight out.

Pull the old turn signal bulb straight out of the socket and push in a new # 7440 or W21W (clear glass) bulb.

Turn Signal Socket Housing
1/4 Turn Clockwise - Lock
Replace Cover - 1/4 Turn C
Re-insert the socket in to the housing and rotate it 1/4 turn clockwise to secure it in place.

Replace the black plastic dust cap and rotate it 1/4 turn clockwise to lock it.

Side Marker - Outer Corner
Small Oval Rubber Cover
Pull Off Rubber Dust Cap
The Front Side Marker bulb is located at the upper outer corner of the headlight assembly. This bulb is the most difficult to replace, especially if you have large hands.

Pull off the rubber dust caps for both the low beam bulb and the smaller oval cap for the side marker bulb.

Reach In & 1/4 Turn CC
Side Marker Socket Removed
Pull Out Old Side Marker Bulb
Reach in with your fingers and rotate the small side marker bulb socket 1/4 turn counter clockwise before pulling it out of the housing.

Pull the old bulb straight out of the socket and push in a new amber colored # 168NA bulb.

Test New Side Marker Bulb
Re-Insert Socket, Difficult
1/4 Turn Clockwise
Turn on the parking lights and check that the new bulb works before re-installing it in to the headlight housing.

The most challenging part of this procedure is re-inserting the socket in to the housing.

You may need to use a screwdriver or other tools to guide the small socket back in to its mounting location.

Then turn the side marker socket 1/4 turn clockwise to lock it in to place.

Replace Low Beam Cap
Push On Side Marker Dust Cap
Push On Headlight Housing
Replace the rubber dust caps for the low beam bulb opening and the side marker bulb.

Line up the headlight housing and carefully push it back in to place on the front of the car.

Tighten Inner Torx T-30
Replace Outer T30 Screw
Test New Headlight Bulbs
Insert the two screws and tighten them with the Torx T30 star bit screwdriver.

Test the new bulbs by turning on the headlights, flashing the high beams, and activating the hazard signals.

For more, check out my other Ford Focus Repair & Maintenance Guides.

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