This procedure replaces both headlight bulbs on a 2011-2014 Ford F-150 3.5L EcoBoost, requiring partial removal of the air intake system and battery access on the driver side.

Warnings

Tools required

Parts

• H13/9008 halogen headlight bulb × 2 — H13 or 9008 (65/55W)

Preparation

1. Park vehicle on level surface and turn off engine
2. Allow headlights to cool completely if recently used
3. Open hood and secure with prop rod
4. Verify replacement bulbs match H13/9008 specification

Procedure

1. 1

   Disconnect battery negative terminal (driver side only)
   For driver side headlight access on the 3.5L EcoBoost, disconnect the negative battery terminal using a 10mm socket. Loosen the terminal bolt and carefully remove the cable, securing it away from the battery post to prevent accidental contact.
   Torque spec

   Battery Terminal Bolts6 Nm (4 lb-ft)
2. 2

   Remove air intake components (driver side)
   On the driver side, loosen the clamp on the air intake tube where it connects to the throttle body. Disconnect any electrical connectors on the mass airflow sensor. Carefully lift and reposition the intake tube to provide clearance to access the headlight assembly from behind.
3. 3

   Access headlight bulb from engine bay
   Reach behind the headlight assembly from the engine bay. Locate the bulb socket at the rear of the headlight housing. On passenger side, access is more direct; on driver side, work through the space created by moving the intake tube.
4. 4

   Disconnect bulb electrical connector
   Press the release tab on the bulb connector and pull straight back to disconnect the wiring harness from the bulb socket. Do not pull on the wires themselves.
5. 5

   Remove bulb retaining ring
   Rotate the bulb socket counterclockwise approximately 1/4 turn to unlock it from the headlight housing. Carefully pull the socket and bulb assembly straight out of the housing.
6. 6

   Remove old bulb from socket
   The H13 bulb has a twist-lock base. Grasp the bulb base (not the glass) and rotate counterclockwise to unlock, then pull straight out of the socket assembly.
7. 7

   Install new bulb
   Wearing clean gloves or handling only the plastic base, align the new H13 bulb tabs with the socket slots. Insert the bulb and rotate clockwise until it locks into place. Ensure the bulb is fully seated and secure.
8. 8

   Reinstall bulb assembly into housing
   Insert the bulb socket assembly straight into the rear of the headlight housing, aligning the tabs. Rotate clockwise approximately 1/4 turn to lock the socket into the housing.
9. 9

   Reconnect electrical connector
   Push the wiring harness connector onto the bulb socket until it clicks into place. Gently tug to verify it is securely locked.
10. 10

    Repeat for opposite side
    Perform steps 3 through 9 for the opposite side headlight. Passenger side has more direct access and does not require intake removal.
11. 11

    Reinstall air intake components (driver side)
    Reposition the air intake tube to its original location. Reconnect the mass airflow sensor electrical connector. Tighten the intake tube clamp at the throttle body securely.
12. 12

    Reconnect battery negative terminal
    Place the negative battery cable back onto the battery post. Tighten the terminal bolt to specification using a 10mm socket and torque wrench. Ensure the connection is secure but do not overtighten.
    ⚠Do not overtighten battery terminal bolts as this can damage the terminal or battery post
    Torque spec

    Battery Terminal Bolts6 Nm (4 lb-ft)

Reassembly

1. Verify all electrical connectors are fully seated and locked
2. Ensure air intake system is properly reinstalled with no loose clamps or disconnected sensors
3. Confirm battery terminal is tight and cable cannot rotate on post

Verification

• Turn ignition to ON position and activate headlights to verify both low beams illuminate
• Activate high beams to verify both bulbs function in high beam mode
• Visually inspect that both headlight beams have similar color and intensity
• Check for any warning lights on instrument cluster related to exterior lighting
• Close hood and verify no tools or parts were left in engine bay

More procedures for this vehicle