This procedure replaces the transfer case shift motor/actuator on a 2011-2014 Ford F-150 3.5L EcoBoost 4WD, which controls engagement between 2WD and 4WD modes.

Warnings

Tools required

Parts

• Transfer case shift motor/actuator assembly × 1 — Ford BC3Z-7G360-A or equivalent
• Transfer case motor gasket/O-ring × 1 — Usually included with motor assembly
• Transfer case fluid × 1 — Motorcraft Transfer Case Fluid

Fluids

• Motorcraft Transfer Case Fluid — 2.5 qt

Preparation

1. Park vehicle on level surface and apply parking brake
2. Place wheel chocks behind rear wheels
3. Shift transfer case into 2WD mode using dash selector switch
4. Turn ignition off and remove key
5. Allow transfer case to cool if vehicle was recently driven (minimum 30 minutes)
6. Raise front of vehicle and support securely on jack stands at frame rails
7. Remove front skid plate if equipped (four bolts)

Procedure

1. 1

   Locate transfer case motor
   The transfer case shift motor is mounted on the rear driver's side of the transfer case, behind the transmission. It is a cylindrical electric motor approximately 4 inches in diameter with a single electrical connector and typically three mounting bolts. Verify you can access the motor, electrical connector, and drain plug from underneath the vehicle.
2. 2

   Disconnect electrical connector
   Locate the electrical connector on the shift motor. Press the locking tab and pull the connector straight off the motor. If connector is corroded or difficult to remove, spray with electrical contact cleaner and wiggle gently while pulling. Inspect connector terminals for corrosion or damage and clean if necessary.
3. 3

   Position drain pan and remove drain plug
   Position a drain pan with at least 3-quart capacity beneath the transfer case drain plug, located on the bottom rear of the transfer case. Using a socket wrench, remove the drain plug and allow all fluid to drain completely. This may take 5-10 minutes. Inspect drained fluid for metal particles or unusual debris, which may indicate internal transfer case wear.
4. 4

   Remove shift motor mounting bolts
   Locate the three mounting bolts securing the shift motor to the transfer case housing. These are typically 10mm or 13mm bolts. Remove all three bolts and set aside. Note the bolt positions if they are different lengths. Support the motor with one hand while removing the final bolt to prevent it from falling.
5. 5

   Extract shift motor assembly
   Carefully pull the shift motor straight out from the transfer case housing. The motor shaft engages with the shift mechanism inside, so it may require a gentle twisting motion while pulling. If motor is stuck, do NOT pry against the transfer case housing. Instead, thread one mounting bolt back in 2-3 turns and tap the bolt head gently with a hammer to break the seal. Remove the gasket or O-ring from the motor or housing and discard.
6. 6

   Inspect shift mechanism and housing
   With the motor removed, visually inspect the shift fork engagement area inside the transfer case opening. Look for broken components, excessive wear, or metal debris. Inspect the motor mounting surface on the transfer case housing for damage or corrosion. Clean the mounting surface with a razor blade scraper and shop rag to ensure a clean, flat sealing surface. Avoid dropping any debris into the transfer case opening.
7. 7

   Prepare new shift motor
   Remove new shift motor from packaging and verify it matches the old unit in appearance and connector type. Install the new gasket or O-ring onto the motor housing, ensuring it is properly seated in its groove. If the new motor has a protective shipping cap on the shaft, remove it. Verify the shaft rotates freely by hand (it should move with slight resistance).
8. 8

   Install new shift motor
   Align the motor shaft with the shift mechanism inside the transfer case. The shaft has a specific orientation and will only engage one way. Gently push the motor into the housing while rotating the shaft slightly to align with the internal mechanism. You should feel it engage and seat fully against the mounting surface. Do not force the motor if it does not seat easily; remove and re-align.
9. 9

   Install and torque mounting bolts
   Install all three mounting bolts finger-tight, ensuring the motor is properly seated against the housing. Tighten the bolts in a star/cross pattern to draw the motor evenly into place. Torque the mounting bolts to specification using a torque wrench.
   Torque spec

   Mounting Bolts31 Nm (23 lb-ft)
10. 10

    Reinstall drain plug
    Clean the drain plug and inspect the sealing washer. Replace the washer if damaged or flattened. Thread the drain plug into the transfer case by hand to avoid cross-threading, then tighten securely. If torque specification is available for your specific drain plug, torque to spec; otherwise, tighten firmly (typically 25-35 lb-ft).
11. 11

    Refill transfer case fluid
    Locate the transfer case fill plug on the side or rear of the transfer case housing (consult service manual for exact location on your model). Remove the fill plug. Using a fluid transfer pump, add Motorcraft Transfer Case Fluid through the fill hole until fluid begins to drip out of the fill hole, indicating proper level. Install and tighten the fill plug securely. Total capacity is approximately 2.5 quarts.
12. 12

    Reconnect electrical connector
    Push the electrical connector firmly onto the shift motor until you hear or feel the locking tab click into place. Tug gently on the connector to verify it is fully seated and locked. Ensure the wiring is routed away from exhaust components and moving parts.
13. 13

    Reinstall skid plate
    If equipped with a front skid plate, reinstall it using the four mounting bolts. Ensure all mounting points are aligned properly before tightening bolts securely.

Reassembly

1. Lower vehicle from jack stands to the ground
2. Remove wheel chocks
3. Double-check that all tools and parts have been removed from under the vehicle

Verification

• Start the engine and allow it to idle
• With foot on brake, shift the transfer case through all positions: 2WD → 4WD High → 4WD Low → 2WD
• Verify the transfer case shifts smoothly into each mode without grinding or error messages on the instrument cluster
• Check for fluid leaks around the shift motor and drain plug while engine is running
• Test drive the vehicle and confirm 4WD engagement by observing front axle engagement during acceleration (brief test on loose surface or wet pavement)
• Re-check transfer case fluid level after test drive and top off if necessary
• Verify no warning lights remain illuminated on the dash

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