Blower Motor Resistor

Remove and replace the blower motor resistor, which controls HVAC fan speeds, located in the passenger footwell area behind the lower dash panel.

Warnings

Tools required

Parts

• Blower motor resistor × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and turn off ignition
2. Allow HVAC system to cool for at least 15 minutes if recently operated
3. Open passenger door fully for working access
4. Move passenger seat fully rearward to maximize footwell working space

Procedure

1. 1

   Locate blower motor resistor
   Position yourself at the passenger door opening. Look up into the lower passenger side of the dash near the center console transition area. The blower motor resistor is mounted to the HVAC housing with the electrical connector facing downward. It is located behind and slightly above the passenger footwell carpet line.
2. 2

   Disconnect electrical connector
   Reach up and locate the electrical connector on the blower motor resistor. Press the locking tab on the connector and pull straight down to disconnect. The connector may be stiff due to heat cycling; wiggle gently while pulling if needed. Allow the connector to hang freely.
3. 3

   Remove resistor mounting fasteners
   Using a 7mm socket with extension, remove the 2 mounting screws securing the blower motor resistor to the HVAC housing. The screws are oriented vertically and may be difficult to see. Work by feel if necessary, ensuring the socket is fully seated before turning to avoid rounding the screw heads.
   ⚠These fasteners may be tight from heat cycling. Ensure proper socket engagement to prevent damage to screw heads in this confined space.
4. 4

   Remove blower motor resistor
   Once both screws are removed, grasp the resistor body and pull straight down to remove it from the HVAC housing. The resistor has a seal that may create resistance; use steady firm pressure. Inspect the mounting location for any debris or corrosion.
5. 5

   Inspect old resistor and mounting area
   Examine the old resistor for signs of failure such as burned terminals, melted plastic housing, or heat damage. Check the HVAC housing mounting surface for corrosion or damage. Inspect the seal on the old resistor; the new unit should include a fresh seal.
6. 6

   Install new blower motor resistor
   Align the new resistor with the mounting holes in the HVAC housing, ensuring the seal is properly positioned. Push the resistor firmly into place until it seats fully against the housing. The electrical connector should face downward for easy access.
7. 7

   Install mounting fasteners
   Thread both 7mm mounting screws by hand to avoid cross-threading. Once both screws are started, tighten them evenly using the socket and extension. Tighten until snug; do not overtighten as this can crack the resistor housing or strip the HVAC housing threads.
8. 8

   Reconnect electrical connector
   Push the electrical connector onto the blower motor resistor terminals until the locking tab clicks into place. Tug gently on the connector to verify it is fully locked. Ensure the wiring harness is not pinched or stressed.

Reassembly

1. Return passenger seat to original position
2. No trim or panels require reinstallation for this procedure

Verification

• Turn ignition to ON position without starting engine
• Test all blower motor speeds (typically 4 speeds plus off) using the HVAC controls
• Verify smooth operation at each speed setting with no unusual noises
• Confirm airflow increases appropriately with each higher speed setting
• Check that the blower motor turns off completely when set to OFF position
• Listen for any buzzing or arcing sounds that would indicate poor electrical connection

Related trouble codes on this vehicle

Codes that commonly send this job to the bay — tap one for symptoms, causes, and diagnostic steps.

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