Replace the blower motor resistor to restore proper HVAC fan speed control. This is a straightforward passenger compartment repair requiring removal of the lower glove box area trim panel.

Warnings

Tools required

Parts

• Blower motor resistor assembly × 1 — Use OEM specification

Preparation

1. Turn off ignition and remove key fob from vehicle
2. Allow HVAC system to cool for at least 30 minutes if recently operated on high heat
3. Ensure passenger seat is moved fully rearward for working space
4. Verify replacement resistor matches part number on existing unit before beginning disassembly

Procedure

1. 1

   Remove lower passenger kick panel
   Using a panel trim tool, carefully release the retaining clips securing the lower passenger side kick panel trim. There are typically 4-6 push clips along the perimeter. Pull the panel away from the firewall area to access the blower motor compartment.
2. 2

   Locate blower motor resistor
   The blower motor resistor is mounted on the HVAC housing near the blower motor, on the passenger side firewall. It is a rectangular module with a wire harness connector and cooling fins visible. Use a flashlight to identify the component - it will have 2 small screws securing it to the housing.
3. 3

   Disconnect electrical connector
   Press the locking tab on the electrical connector and pull straight out to disconnect the wiring harness from the blower motor resistor. Do not pull on the wires themselves. If connector is tight, gently wiggle while pulling to release.
4. 4

   Remove resistor mounting screws
   Using a 7mm socket or nut driver, remove the two screws securing the blower motor resistor to the HVAC housing. These screws are small and may be difficult to access - use an extension if needed. Keep screws in a safe location for reinstallation.
   Torque spec

   Resistor Screws2 Nm (1.5 lb-ft)
5. 5

   Extract old resistor
   Carefully pull the blower motor resistor straight out from the HVAC housing. The resistor has cooling fins that insert into the housing duct - it may require gentle wiggling to extract. Inspect the mounting surface and seal area for debris or damage.
6. 6

   Clean mounting surface
   Inspect the HVAC housing opening where the resistor mounts. Remove any debris, leaves, or corrosion from the mounting surface using a clean rag. Ensure the airflow path through the opening is clear of obstructions.
7. 7

   Install new blower motor resistor
   Align the new blower motor resistor with the mounting holes in the HVAC housing, ensuring the cooling fins are properly oriented to insert into the duct opening. Push the resistor firmly into place until it seats flush against the housing. Verify the seal makes good contact around the perimeter.
8. 8

   Install and torque resistor screws
   Thread the two mounting screws by hand first to ensure proper alignment. Using a torque wrench, tighten the resistor screws to exactly 2.0 Nm (1.5 lb-ft) in a cross pattern. This torque is very low - use an inch-pound torque wrench for accuracy and do not overtighten.
   Torque spec

   Resistor Screws2 Nm (1.5 lb-ft)
9. 9

   Reconnect electrical connector
   Push the electrical connector onto the blower motor resistor terminals until you hear and feel the locking tab click into place. Tug gently on the connector to verify it is fully seated and locked.
10. 10

    Reinstall kick panel trim
    Align the lower passenger kick panel with the mounting locations. Push firmly on each clip location until all clips are fully seated and the panel is secure. Verify the panel edges are flush with surrounding trim.

Reassembly

1. Ensure all trim panels are properly clipped and seated with no gaps
2. Return passenger seat to normal position

Verification

• Turn ignition to ON position without starting engine
• Test blower motor operation at all fan speeds (1, 2, 3, 4, and high)
• Verify smooth transitions between speeds with no intermittent operation
• Confirm airflow changes appropriately with each speed setting
• Listen for abnormal noises from the blower motor area
• Start engine and verify HVAC system operates normally under all conditions

More procedures for this vehicle