Replace the blower motor control module, which regulates HVAC fan speed. Located in the passenger side footwell area behind the kick panel.

Warnings

Tools required

Parts

• Blower Motor Control Module × 1 — Motorcraft YH-1952 or equivalent
• Push-pin retainers (if damaged) × 5 — Use OEM specification

Preparation

1. Park vehicle on level surface and engage parking brake
2. Turn ignition off and remove key from ignition
3. Open hood and locate battery in engine bay
4. Allow vehicle interior to reach comfortable working temperature if recently driven
5. Clear passenger footwell area of floor mats and any obstructions

Procedure

1. 1

   Disconnect battery negative terminal
   Using a 10mm socket, loosen the negative battery terminal bolt. Remove the negative cable from battery post and secure it away from the battery terminal to prevent accidental reconnection. Wait 2 minutes for electrical systems to discharge.
   Torque spec

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

   Remove passenger kick panel
   Locate the plastic kick panel on the lower right side of the passenger footwell. Using trim removal tools, carefully pry the panel away starting from the bottom edge. Remove 3-4 push-pin retainers securing the panel. Set panel and retainers aside in a safe location.
3. 3

   Locate blower motor control module
   With the kick panel removed, use flashlight to identify the blower motor control module mounted on the HVAC housing. The module is a rectangular aluminum component with a wiring harness connector and cooling fins. It will be positioned vertically or at an angle.
4. 4

   Disconnect module electrical connector
   Press the locking tab on the wiring harness connector and pull straight out to disconnect from the blower motor control module. Do not twist or pull on wires. If connector is tight, gently rock side-to-side while pulling.
   ⚠Do not force connector. Inspect for secondary locking tabs that may need to be released first.
5. 5

   Remove module mounting bolts
   Using an 8mm socket with extension, remove the two mounting bolts securing the blower motor control module to the HVAC housing. Support the module with one hand while removing the second bolt to prevent it from falling.
   Torque spec

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

   Remove old module
   Carefully pull the blower motor control module away from the HVAC housing. Note the orientation and position of any rubber grommets or thermal pads between the module and housing. Keep these for reinstallation with new module if they are in good condition.
7. 7

   Inspect mounting area
   Examine the HVAC housing mounting surface for debris, corrosion, or damage. Clean the surface with a dry cloth. Inspect the wiring harness connector for bent pins, corrosion, or damage. Clean connector terminals if necessary.
8. 8

   Install new module
   Transfer any rubber grommets or thermal interface pads to the new module in the same positions as the old unit. Position the new blower motor control module against the HVAC housing, aligning the mounting holes. Apply a small amount of dielectric grease to connector if desired.
9. 9

   Install module mounting bolts
   Thread both mounting bolts by hand to ensure proper thread engagement. Using torque wrench and 8mm socket, tighten mounting bolts to specification in a cross-pattern to ensure even seating against housing.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)
10. 10

    Connect electrical connector
    Align the wiring harness connector with the blower motor control module and push firmly until you hear or feel a positive click. Gently tug on the connector to verify it is fully locked in place.
11. 11

    Reinstall kick panel
    Position the passenger kick panel back into place. Insert all push-pin retainers and press firmly until they click into place. Ensure panel is fully seated and flush with surrounding trim.
12. 12

    Reconnect battery
    Clean battery terminal posts if necessary. Reconnect the negative battery cable to the negative terminal post. Using a 10mm socket and torque wrench, tighten the terminal bolt to specification. Do not overtighten.
    ⚠Overtightening battery terminals can damage the terminal or battery post.
    Torque spec

    Battery Terminal Bolts6 Nm (4 lb-ft)

Reassembly

1. Verify all push-pin retainers are fully seated in kick panel
2. Check that no tools or parts were left in the passenger footwell
3. Reset clock and radio presets as needed
4. Reset power window auto-up/down feature by holding switches fully up/down for 3 seconds after full travel

Verification

• Turn ignition to ON position without starting engine
• Turn blower fan control to each speed setting (1 through 7) and verify smooth operation at all speeds
• Listen for unusual noises or hesitation during speed transitions
• Verify blower responds immediately to speed changes without delay
• Test in AUTO mode if equipped - blower should ramp up and down smoothly
• Check for any HVAC-related warning lights or messages on instrument cluster
• Operate blower for 5 minutes at various speeds to ensure module does not overheat or shut down

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