Window Motor and Regulator - Rear

This procedure covers the removal and replacement of the rear window motor and regulator assembly on a 2017 Maserati Levante with 3.0L V6 Twin Turbo engine.

Warnings

Tools required

Parts

• Rear window regulator assembly × 1 — Use OEM specification
• Rear window motor × 1 — Use OEM specification
• Plastic trim clips (assorted) × 5 — Have spares available
• Door panel fasteners × 3 — Replacement if damaged

Preparation

1. Park vehicle on level surface and engage parking brake
2. Disconnect negative battery terminal and wait 2 minutes for system capacitors to discharge
3. Open rear door fully and secure in open position
4. Lower rear window to approximately mid-position for access (if functional)
5. Photograph trim panel and connector locations for reference during reassembly

Procedure

1. 1

   Disconnect battery
   Disconnect the negative battery terminal using a 10mm socket. Secure the cable away from the battery post. Wait at least 2 minutes before proceeding to allow electrical systems to fully discharge.
   Torque spec

   Battery Terminal Bolts6 Nm (4 lb-ft)
2. 2

   Remove rear door trim panel
   Remove all visible T20 Torx screws from the door panel perimeter and armrest. Use trim panel removal tools to carefully release the plastic clips around the door panel edge, working from bottom to top. Disconnect the door handle cable by sliding the cable end out of its retention clip. Lift the door panel upward and away from the door frame to release the top retaining clips.
3. 3

   Remove vapor barrier
   Carefully peel back the plastic vapor barrier sheet to expose the window regulator and motor assembly. Start at one corner and work slowly to avoid tearing. If equipped with adhesive, use low heat from a heat gun to soften if necessary. Leave the barrier attached at the top for easier reinstallation.
4. 4

   Secure window glass
   Raise the window glass to the full-up position manually if motor is non-functional. Use masking tape to secure the window glass to the door frame at the top, placing tape across the glass and onto the exterior door frame. This prevents the glass from falling once the regulator is disconnected.
5. 5

   Disconnect window motor electrical connector
   Locate the window motor electrical connector on the motor body. Press the locking tab and carefully disconnect the connector. If equipped with a connector screw, remove it first using a T20 Torx driver.
   Torque spec

   Connector Screws4 Nm (3 lb-ft)
6. 6

   Disconnect window glass from regulator
   Locate the two T25 Torx bolts that attach the window glass to the regulator channel inside the door. Access these through the large service holes in the door frame. Loosen and remove both bolts while supporting the window glass. The glass will now be held only by the masking tape.
7. 7

   Remove regulator mounting bolts
   Locate all regulator mounting bolts (typically 3-4 bolts). Remove the bolts using a 10mm socket. Note the location of any ground strap connections if present and ensure contact surfaces are clean for reinstallation.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)

   Ground Strap Bolt14 Nm (10 lb-ft)
8. 8

   Remove window motor mounting bolts
   If the motor is separately mounted from the regulator, locate and remove the motor mounting bolts using a 10mm socket. The motor may be integrated with the regulator on some configurations.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)
9. 9

   Extract regulator and motor assembly
   Carefully maneuver the window regulator and motor assembly out through the largest service opening in the door frame. The assembly may need to be rotated and angled to clear internal door structures. Control the regulator carefully as spring tension may still be present in the mechanism.
10. 10

    Install new regulator and motor
    Position the new window regulator and motor assembly inside the door, routing it through the service opening. Align the mounting holes with the door frame mounting points. Install all mounting bolts finger-tight first, then torque to specification. If ground straps are present, ensure contact surfaces are clean and free of paint or corrosion before final tightening.
    Torque spec

    Module Mounting Bolts8 Nm (6 lb-ft)

    Ground Strap Bolt14 Nm (10 lb-ft)
11. 11

    Reconnect window glass to regulator
    Remove the masking tape holding the window glass. Lower the glass carefully and align the glass channel with the regulator attachment points. Install the two T25 Torx bolts through the access holes and tighten securely. Verify the glass moves smoothly along the regulator channel.
12. 12

    Reconnect electrical connector
    Connect the window motor electrical connector, ensuring the locking tab clicks into place. If equipped with a connector screw, install and torque to specification.
    Torque spec

    Connector Screws4 Nm (3 lb-ft)
13. 13

    Test window operation before final assembly
    Reconnect the negative battery terminal temporarily. Test window operation through multiple full cycles (up and down). Verify smooth operation without binding or unusual noise. Perform window auto-up/down calibration if required by cycling the window fully down, then fully up and holding the switch for 2 seconds. Disconnect battery again before continuing.
    Torque spec

    Battery Terminal Bolts6 Nm (4 lb-ft)
14. 14

    Reinstall vapor barrier and door trim
    Reattach the vapor barrier sheet, ensuring a complete seal around the perimeter. Press firmly to re-engage any adhesive. Position the door trim panel, reconnect the door handle cable, and align the top clips. Press the panel firmly into place to engage all retaining clips. Reinstall all T20 Torx screws around the panel perimeter and armrest.
15. 15

    Reconnect battery and final verification
    Reconnect the negative battery terminal and torque to specification. Test all door functions including window operation, door locks, and any other switches located in the door panel. Verify window seals properly at full-up position and operates smoothly throughout full range of travel.
    Torque spec

    Battery Terminal Bolts6 Nm (4 lb-ft)

Reassembly

1. Ensure all electrical connectors are fully seated with locking tabs engaged
2. Verify vapor barrier is properly sealed to prevent water intrusion into door cavity
3. Check that all trim panel clips are fully engaged before tightening screws
4. Perform window auto-calibration procedure if vehicle is equipped with one-touch up/down operation

Verification

• Test window operation through at least 10 complete cycles to verify smooth operation
• Verify window auto-up and auto-down functions work correctly (if equipped)
• Check for any unusual noises during window travel
• Confirm window seals properly against weatherstripping when fully closed
• Verify no water leaks around door panel after reinstallation
• Test that window stops correctly at full-up and full-down positions without manual adjustment

Related trouble codes on this vehicle

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

Chasing one of these codes and not sure which part is guilty? Ask a master mechanic about YOUR car →

More procedures for this vehicle