This procedure covers the replacement of the HVAC mode door actuator, which controls airflow direction in the climate control system of the 2011-2014 Ford F-150 with 3.5L EcoBoost engine.

Warnings

Tools required

Parts

• Mode door actuator × 1 — Motorcraft YH-1933 or equivalent
• Push-pin retainers (if broken during removal) × 5 — Ford W710788-S300

Preparation

1. Park vehicle on level surface and ensure engine is completely cool
2. Disconnect negative battery terminal and wait 2 minutes for airbag system to discharge
3. Turn ignition to OFF position and remove key
4. Set climate control to OFF position before beginning work
5. Gather all tools and new parts within reach

Procedure

1. 1

   Remove lower instrument panel cover
   Locate the lower instrument panel cover on the passenger side beneath the glove box. Remove the push-pin retainers (typically 3-4) using the panel removal tool by prying the center up first, then removing the entire retainer. Carefully pull the cover down and away from the dash to disengage any remaining clips. Set aside in a safe location.
2. 2

   Access glove box area
   Open the glove box and empty all contents. Locate the glove box damper arm on the right side and disconnect it by squeezing the damper connection and pulling away. Press inward on both sides of the glove box to release the stops, then lower the glove box fully to gain access to the HVAC housing behind it.
3. 3

   Locate mode door actuator
   Using your flashlight, locate the mode door actuator on the passenger side of the HVAC housing. It is typically positioned on the right side of the housing with an electrical connector and 2-3 mounting screws. The actuator is a small plastic box approximately 3 inches square with a shaft extending into the HVAC case. You may need to reach up and behind the housing to access it fully.
4. 4

   Disconnect actuator electrical connector
   Press the locking tab on the actuator electrical connector and carefully pull straight away from the actuator body. Do not pull on the wires themselves. Note the orientation of the connector for reinstallation. If the connector is difficult to access, use a small flat-blade screwdriver to depress the locking tab while pulling.
5. 5

   Remove actuator mounting screws
   Using the 7mm socket with ratchet and extension, remove the actuator mounting screws (typically 2-3 screws). Keep these screws in your magnetic parts tray as they are small and easily lost. Support the actuator with your other hand while removing the final screw to prevent it from falling into the dash cavity.
   Torque spec

   Cover Screws12 Nm (9 lb-ft)
6. 6

   Remove old actuator
   Gently pull the actuator straight away from the HVAC housing. The actuator shaft will disengage from the mode door linkage inside the housing. You may need to rotate the actuator slightly (no more than 10-15 degrees) while pulling to clear any obstructions. Once free, carefully extract the actuator from the dash area.
7. 7

   Inspect mode door operation
   With the old actuator removed, use your flashlight to inspect the mode door shaft opening in the HVAC housing. Check for any broken plastic pieces or debris. Gently attempt to rotate the mode door shaft manually with your finger to verify it moves freely without binding. The shaft should rotate approximately 90-120 degrees smoothly. If it binds, further diagnosis of the HVAC housing may be required before installing the new actuator.
8. 8

   Prepare new actuator
   Remove the new mode door actuator from its packaging. Verify the actuator shaft is in the neutral position (typically centered in its rotation range). Do not manually force the actuator to rotate. Compare the new actuator to the old one to confirm matching connector type and mounting hole pattern.
9. 9

   Install new actuator
   Carefully align the new actuator shaft with the mode door shaft opening in the HVAC housing. You may need to rotate the actuator body slightly to align the shaft splines. Once aligned, press the actuator firmly against the housing until it seats flush. Ensure the mounting screw holes align properly with the housing bosses.
   ⚠Do not force the actuator into place. If resistance is felt, remove and check alignment of shaft splines.
10. 10

    Install actuator mounting screws
    Install the actuator mounting screws by hand first to ensure proper thread engagement. Using the 7mm socket and torque wrench, tighten the screws to 12.0 Nm (9.0 lb-ft) in a cross pattern if there are multiple screws. Do not overtighten as this can crack the plastic actuator housing or strip the threads in the HVAC case.
    Torque spec

    Cover Screws12 Nm (9 lb-ft)
11. 11

    Reconnect electrical connector
    Align the electrical connector with the actuator terminal and press firmly until you hear and feel a positive click. Gently tug on the connector to verify it is fully locked in place. Ensure no wires are pinched between the actuator and HVAC housing.
12. 12

    Reconnect battery and test actuator
    Reconnect the negative battery terminal. Turn the ignition to ON position (do not start engine). Turn on the climate control system and cycle through all mode positions (defrost, panel, floor, bi-level). Listen for the actuator motor operating as modes are changed. You should hear a quiet whirring sound lasting 2-3 seconds with each mode change. Verify airflow direction changes appropriately for each mode selection.
13. 13

    Reinstall glove box
    Raise the glove box back into position, compressing the sides inward to clear the stops. Once aligned, release the sides to engage the stops. Reconnect the glove box damper arm by pressing it onto the glove box connection until it clicks into place. Open and close the glove box to verify smooth operation.
14. 14

    Reinstall lower instrument panel cover
    Position the lower instrument panel cover and align it with the mounting locations. Press firmly to engage any clips, then install the push-pin retainers by inserting the retainer body first, then pressing the center pin until flush. Ensure the cover is secure and all edges are properly seated.

Reassembly

1. Ensure all push-pin retainers are fully seated and flush with the panel surface
2. Verify glove box damper operates smoothly and glove box closes completely
3. Check that no tools or parts were left in the dash cavity
4. Confirm all electrical connectors are fully engaged and locked

Verification

• Start the engine and allow it to reach operating temperature
• Test all climate control modes (defrost, panel, floor, bi-level, mix modes) and verify correct airflow direction from appropriate vents
• Listen for any unusual noises from the actuator during mode changes
• Verify no air leaks from the HVAC housing or dash panels
• Confirm actuator responds within 2-3 seconds when changing modes
• Test with both recirculation on and off to ensure full system functionality
• Check for proper temperature control in all modes to ensure no other HVAC issues

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