This procedure covers the removal and replacement of the headlight dimmer switch (multifunction switch) on the steering column of a 2011-2014 Ford F-150 3.5L EcoBoost.

Warnings

Tools required

Parts

• Multifunction switch (dimmer switch) × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and set parking brake
2. Turn steering wheel to straight-ahead position and lock in place with ignition key removed
3. Disconnect battery negative terminal and wait minimum 2 minutes for airbag system capacitor discharge
4. Ensure driver's seat is moved fully rearward for access
5. Gather all tools and new multifunction switch before beginning disassembly

Procedure

1. 1

   Remove lower steering column covers
   Use panel removal tool to release the clips securing the lower steering column cover. There are typically 4-6 clips around the perimeter. Gently pull the lower cover away from the column. Remove the upper steering column cover by releasing its clips and lifting upward and away from the steering column. Set covers aside in a clean area.
2. 2

   Disconnect multifunction switch electrical connectors
   Locate the two electrical connectors on the right side of the steering column behind the multifunction switch. Press the locking tab on the first connector and pull straight back to disconnect. Repeat for the second connector. Note the routing of the wiring harness for reinstallation.
   ⚠Do not pull on wires; pull only on the connector bodies to avoid damaging terminals.
3. 3

   Remove multifunction switch mounting screws
   Using the Torx T20 bit, remove the two screws securing the multifunction switch to the steering column. These screws are typically located on the underside of the switch assembly. Support the switch with one hand while removing the second screw to prevent it from dropping.
4. 4

   Remove multifunction switch from steering column
   Carefully slide the multifunction switch assembly off the steering column shaft. The switch slides rearward (toward the driver's seat) to disengage from the column. You may need to wiggle it slightly while pulling to clear any alignment pins. Remove the switch completely and set aside.
5. 5

   Inspect steering column and clockspring
   With the switch removed, visually inspect the clockspring (yellow connector assembly) beneath the multifunction switch location. Check for any visible damage, fraying wires, or loose connections. Verify the steering wheel has not been rotated and the clockspring is still centered. Inspect the column shaft for any damage or excessive wear.
   ⚠If clockspring appears damaged or off-center, it must be replaced and centered before proceeding.
6. 6

   Install new multifunction switch
   Position the new multifunction switch assembly over the steering column shaft, ensuring the alignment pins on the switch engage with the corresponding holes in the column housing. Slide the switch forward onto the column until it seats fully against the column housing. Verify the switch lever operates freely through all positions before securing.
7. 7

   Install multifunction switch mounting screws
   Insert the two Torx T20 screws through the multifunction switch mounting holes and thread them into the steering column. Hand-tighten both screws first to ensure proper alignment. Using a torque wrench with Torx T20 bit, tighten the mounting screws to 8.0 Nm (6.0 lb-ft). These are considered module mounting bolts per Ford specifications.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)
8. 8

   Reconnect electrical connectors
   Route the wiring harness as noted during disassembly. Connect both electrical connectors to the multifunction switch, pressing firmly until you hear and feel a positive click indicating the locking tab has engaged. Gently tug on each connector to verify it is fully locked in place.
9. 9

   Reinstall steering column covers
   Position the upper steering column cover over the column, aligning the clips with their corresponding holes. Press firmly around the perimeter until all clips engage. Install the lower steering column cover by aligning its clips and pressing firmly until all clips engage with an audible snap. Verify both covers are secure and properly seated.
10. 10

    Reconnect battery and perform system verification
    Reconnect the battery negative terminal and tighten the terminal bolt to 6.0 Nm (4.0 lb-ft) using a torque wrench. Do not overtighten as this can damage the battery terminal. Turn the ignition to the ON position without starting the engine and verify the instrument cluster illuminates without airbag warning lights remaining on after initial bulb check.
    ⚠Do not overtighten battery terminal bolt; excess torque can crack the battery post.
    Torque spec

    Battery Terminal Bolts6 Nm (4 lb-ft)

Reassembly

1. Ensure all electrical connectors are fully seated and locked before reinstalling covers
2. Verify steering column covers are completely seated with no gaps before final testing
3. Double-check that no tools or parts were left in the steering column area

Verification

• With ignition ON, test high beam operation by pulling dimmer switch toward steering wheel - verify blue high beam indicator illuminates on instrument cluster
• Test low beam operation by pushing dimmer switch forward - verify high beam indicator turns off
• Test flash-to-pass function by pulling dimmer switch momentarily - verify headlights flash
• Verify turn signal operation in both left and right positions
• Verify windshield wiper operation in all switch positions
• Start engine and verify no airbag warning lights remain illuminated after initial bulb check (approximately 6 seconds)
• Test all multifunction switch operations while driving at low speed in a safe area to ensure proper functionality

More procedures for this vehicle