Replace the blower motor control module (also called blower motor resistor or power module) that regulates HVAC fan speed in the passenger compartment.

Warnings

Tools required

Parts

• Blower motor control module (blower motor resistor) × 1 — Use OEM specification - Mopar 68079485AA or equivalent

Preparation

1. Park vehicle on level surface and engage parking brake
2. Turn off ignition and allow HVAC system to cool if recently used
3. Gather all tools and replacement module within easy reach

Procedure

1. 1

   Remove glove box contents and prepare access
   Open the glove box fully and remove all contents. Locate the glove box door stop tabs on each side of the glove box that prevent it from opening past 90 degrees.
2. 2

   Drop glove box door for access
   Gently squeeze the sides of the glove box inward to disengage the door stop tabs from their slots. Carefully lower the glove box door down past its normal stopping point to expose the area behind it. The glove box will hang freely but remain attached at the hinge.
3. 3

   Locate blower motor control module
   Look up and to the right behind the glove box opening. The blower motor control module is mounted on the HVAC housing with a wire harness connector attached. It is typically a rectangular module with cooling fins and may have a protective cover or be directly visible.
4. 4

   Disconnect electrical connector
   Press the locking tab on the electrical connector and firmly pull the connector straight off the blower motor control module. The connector may be tight; wiggle gently if needed but avoid pulling on the wires themselves.
5. 5

   Remove mounting screws
   Using a 7mm socket or nut driver, remove the two mounting screws securing the blower motor control module to the HVAC housing. Support the module as you remove the second screw to prevent it from falling.
   Torque spec

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

   Extract control module
   Carefully pull the blower motor control module straight out from the HVAC housing. Note the orientation and position of any foam seals or gaskets on the module or housing.
7. 7

   Inspect mounting area
   Inspect the HVAC housing mounting surface for debris, corrosion, or damage. Wipe clean with a dry cloth if needed. Check that any foam seal on the housing is intact and properly positioned.
8. 8

   Install new control module
   Position the new blower motor control module with the electrical connector terminals facing the correct direction (match orientation of old unit). Ensure any foam seal is properly aligned. Insert the module into the HVAC housing opening until it seats flush against the housing.
9. 9

   Install mounting screws
   Thread in both mounting screws by hand first to ensure proper engagement. Using a torque wrench and 7mm socket, tighten the screws to specification in a cross pattern to ensure even seating of the module.
   Torque spec

   Cover Screws12 Nm (9 lb-ft)
10. 10

    Reconnect electrical connector
    Align the electrical connector with the terminals on the new blower motor control module. Push the connector firmly onto the module until you hear or feel the locking tab click into place. Tug gently to verify it is fully seated and locked.
11. 11

    Restore glove box position
    Lift the glove box door back up to its normal position. Squeeze the sides slightly and guide the door stop tabs back into their slots on both sides. Verify the glove box opens and closes normally.

Reassembly

1. Return all items to glove box
2. Ensure glove box operates smoothly without interference

Verification

• Start the engine and turn on the HVAC system
• Test all blower motor fan speeds (low, medium-low, medium-high, and high) to verify they all function properly
• Listen for unusual noises from the blower motor area that might indicate improper installation
• Verify air flow is consistent at each speed setting
• Check that the blower motor turns off completely when switched to the off position
• Confirm no warning lights appear on the instrument cluster related to HVAC system

More procedures for this vehicle