Transfer Case Motor/Actuator

This procedure covers the removal and replacement of the transfer case actuator motor on a 2017 Maserati Levante 3.0L V6 Twin Turbo RWD, which controls engagement of the all-wheel drive system.

Warnings

Tools required

Parts

• Transfer case actuator motor × 1 — Use OEM specification
• Actuator motor O-ring or gasket × 1 — Usually included with actuator

Preparation

1. Park vehicle on level surface and engage parking brake
2. Raise vehicle on lift or with floor jack and support securely on jack stands at manufacturer lift points
3. Allow drivetrain to cool if vehicle was recently operated
4. Remove engine under covers and transfer case splash shields to access transfer case area
5. Locate transfer case mounted on rear of transmission; actuator motor is typically on driver side of transfer case

Procedure

1. 1

   Disconnect electrical connector
   Locate the electrical connector on the transfer case actuator motor. Press the locking tab and carefully disconnect the wiring harness. Inspect connector pins for corrosion or damage and clean if necessary with electrical contact cleaner.
2. 2

   Clean actuator mounting area
   Use a wire brush to clean around the actuator motor mounting bolts and surrounding area. Remove any debris, dirt, or corrosion to prevent contamination from entering the transfer case during removal.
3. 3

   Position drain pan
   Place a drain pan beneath the transfer case actuator motor location. Some transfer case fluid may leak out when the actuator is removed, particularly if fluid level is high or vehicle is on an incline.
4. 4

   Remove actuator mounting bolts
   Remove the mounting bolts securing the transfer case actuator motor to the transfer case housing. Typically there are 3-4 bolts arranged in a circular pattern. Keep bolts organized for reinstallation. Note the position and orientation of the actuator before removal.
5. 5

   Extract actuator motor
   Carefully pull the actuator motor straight out from the transfer case housing. If resistance is felt, gently rotate the actuator while pulling to disengage the internal gear mechanism. Do not force or pry as this may damage the internal shift fork or actuator gear.
6. 6

   Inspect transfer case opening
   Once actuator is removed, inspect the transfer case opening for debris, metal shavings, or excessive wear. Check the shift fork position through the opening if visible. Look for any signs of internal damage that may indicate a larger transfer case problem.
7. 7

   Remove and inspect old seal
   Remove the old O-ring or gasket from the actuator mounting surface on the transfer case. Clean the mating surface thoroughly with a shop towel. Inspect the sealing surface for damage, scratches, or warping that could prevent proper sealing.
8. 8

   Prepare new actuator motor
   Unpack the new transfer case actuator motor and verify it matches the original unit. Install the new O-ring or gasket onto the new actuator, ensuring it is properly seated in the groove. Lightly lubricate the seal with clean transfer case fluid or petroleum jelly to aid installation.
9. 9

   Install new actuator motor
   Align the actuator motor with the transfer case opening, ensuring the internal gear or shaft is properly oriented to engage with the shift mechanism. Gently push the actuator straight into the housing while rotating slightly if needed to engage internal components. Seat the actuator fully against the transfer case housing.
10. 10

    Install mounting bolts
    Install the actuator mounting bolts in a cross-pattern sequence to ensure even seating. Tighten bolts gradually in stages rather than fully tightening one at a time. Since no torque specification is provided in the database, follow OEM service manual specification or use moderate torque appropriate for the bolt size (typically 8-12 Nm for M6 bolts).
11. 11

    Reconnect electrical connector
    Reconnect the wiring harness to the actuator motor electrical connector. Ensure the connector locks securely with an audible click. Gently tug on the connector to verify it is fully seated and locked.
12. 12

    Check for fluid leaks
    Inspect the actuator installation area for any transfer case fluid leaks around the seal. Wipe the area clean and observe for several minutes. Minor seepage may occur initially but should not continue.

Reassembly

1. Reinstall transfer case splash shields and engine under covers
2. Lower vehicle from jack stands or lift
3. If battery was disconnected, reconnect negative terminal
4. Check transfer case fluid level if significant fluid was lost during actuator removal

Verification

• Start the engine and verify no warning lights appear on the instrument cluster related to the AWD system
• Using the Maserati diagnostic system or scan tool, verify the transfer case actuator motor responds to commands and completes self-test procedures
• Test drive the vehicle and verify proper AWD engagement in various driving conditions if equipped with selectable modes
• After test drive, re-inspect actuator mounting area for any fluid leaks
• Verify no unusual noises from transfer case during operation or mode changes

Related trouble codes on this vehicle

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