electrical
Blower Motor
for 2012 Ford F-150 3.5L V6 EcoBoost · 4WD
Difficulty
Easy
Time
1.8 h
Tools
7
Steps
12
This procedure covers removal and replacement of the HVAC blower motor assembly located in the passenger compartment beneath the glove box area.
Warnings
⚠Disconnect the negative battery cable and wait 2 minutes before beginning work to allow airbag system capacitors to discharge
ℹ️The blower motor is located below the passenger side dash and can be accessed without removing the entire dash assembly
⚠Inspect the blower motor resistor and wiring connector for signs of heat damage or melting during removal
Tools required
7mm socket and ratchetEssential
8mm socket and ratchetEssential
10mm socket and ratchetEssential
Panel removal tool setEssential
Torque wrench (1-20 Nm range)Essential
Flashlight or work light
Shop vacuum
Parts
- Blower motor assembly × 1 — Motorcraft MM-1056 or equivalent
- Blower motor resistor (if damaged) × 1 — Motorcraft YH-1715 or equivalent
Preparation
- Park vehicle on level ground and turn off ignition
- Disconnect negative battery cable and wait 2 minutes
- Remove any items from under the passenger side dashboard area to create workspace
- Set HVAC controls to OFF position
Procedure
- 1Remove passenger side lower dash panelLocate the lower dash panel beneath the glove box on the passenger side. Remove the plastic panel retaining clips using a panel removal tool. Carefully pull the lower panel downward and away from the dash to expose the blower motor housing. There are typically 3-4 push clips securing this panel.
- 2Disconnect blower motor resistor connectorLocate the blower motor resistor module mounted on the side of the blower motor housing. Depress the locking tab on the electrical connector and pull straight out to disconnect. Inspect the connector terminals for signs of overheating or corrosion.
- 3Remove blower motor resistorRemove the two screws securing the blower motor resistor to the housing. Pull the resistor module out of the housing. Set aside and inspect for damage or burned components.Torque specBlower Motor Resistor Screws2 Nm (1.5 lb-ft)
- 4Disconnect blower motor electrical connectorReach behind the blower motor housing and locate the main blower motor electrical connector. Press the locking tab and pull the connector straight off the blower motor terminals. Note the connector orientation for reinstallation.
- 5Remove blower motor mounting screwsLocate the three mounting screws securing the blower motor assembly to the HVAC housing. These screws are positioned around the perimeter of the blower motor flange. Remove all three screws using an 8mm socket. Support the blower motor with one hand as you remove the final screw.Torque specBlower Motor Screws4 Nm (3 lb-ft)
- 6Remove blower motor assemblyCarefully lower the blower motor assembly from the housing. Rotate the motor as needed to clear the housing opening. The motor and fan cage assembly is removed as a single unit. Be careful not to damage the fan blades during removal.
- 7Clean blower motor housingUse a shop vacuum to remove any debris, leaves, or dirt from inside the blower motor housing cavity. Inspect the housing seal surface for damage or deterioration. Check the evaporator drain tube is clear of obstructions.
- 8Install new blower motor assemblyPosition the new blower motor assembly into the housing opening. Align the mounting screw holes and ensure the motor sits flush against the housing flange. Verify the seal is properly positioned before installing screws.Torque specBlower Motor Screws4 Nm (3 lb-ft)
- 9Reconnect blower motor electrical connectorConnect the main electrical connector to the blower motor terminals. Ensure the connector locks into place with an audible click. Gently tug on the connector to verify it is fully seated.
- 10Install blower motor resistorInsert the blower motor resistor module into its mounting location on the housing. Align the screw holes and install the two retaining screws. Do not overtighten as the resistor housing is plastic.Torque specBlower Motor Resistor Screws2 Nm (1.5 lb-ft)
- 11Reconnect resistor electrical connectorConnect the electrical connector to the blower motor resistor. Push firmly until the locking tab clicks into place. Verify the connection is secure.
- 12Reinstall lower dash panelPosition the lower dash panel back into place. Align the push clips with their mounting holes and firmly press until each clip locks into position. Verify the panel is secure and properly aligned.
Reassembly
- Reconnect the negative battery cable
- Verify all electrical connectors are properly seated and locked
- Ensure no tools or parts are left in the work area
Verification
- Turn the ignition to the ON position without starting the engine
- Test blower motor operation at all fan speed settings (1-7) to ensure proper function
- Listen for unusual noises such as squealing, grinding, or rubbing during operation
- Verify airflow is coming from all vent positions when selected
- Check that the lower dash panel is properly secured with no rattles or loose clips
- Confirm no warning lights related to climate control appear on the instrument cluster