Power Window Regulator - Front

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

Warnings

Tools required

Parts

• Front window regulator assembly × 1 — Use OEM Maserati part number specific to driver or passenger side
• Door panel trim clips (assorted) × 1 — Replace any broken clips during removal
• Vapor barrier adhesive tape × 1 — If vapor barrier seal is damaged

Preparation

1. Park vehicle on level surface and engage parking brake
2. Disconnect negative battery terminal and wait 2 minutes for airbag system capacitors to discharge
3. Lower window to approximately mid-height position before disconnecting battery
4. Cover fender with protective cloth to prevent scratches during door panel work
5. Prepare clean workspace for removed door panel and components

Procedure

1. 1

   Remove door panel trim and components
   Remove the door pull handle cover using trim tools. Remove screws securing door handle surround and pull handle assembly. Carefully pry door panel clips using trim removal tools, starting from bottom rear corner and working around perimeter. Disconnect all electrical connectors for switches and ambient lighting. Lift door panel up and away from door frame to disengage upper retaining hooks.
   Torque spec

   Cover Screws11 Nm (8 lb-ft)
2. 2

   Remove door speaker assembly
   Locate and remove speaker mounting screws behind door panel. Carefully extract speaker from door cavity and disconnect electrical connector. Set speaker aside in safe location. This provides access to lower window regulator mounting points.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)
3. 3

   Peel back vapor barrier
   Carefully peel back the plastic vapor barrier sheet from door frame, starting at bottom. Work slowly to avoid tearing the barrier. If adhesive seal is compromised, prepare replacement sealing tape. Only peel back enough to access regulator mounting points and electrical connections.
   ℹ️The vapor barrier protects interior from water intrusion. Handle carefully to maintain seal integrity.
4. 4

   Secure window glass in raised position
   Using painter's tape or specialized window clamps, secure the glass in the fully raised position within the door frame. Ensure glass is stable and will not drop during regulator removal. If window cannot be raised manually, two assistants may be needed to support glass from inside and outside.
   ⚠Glass must be firmly secured before disconnecting regulator. Unsupported glass can drop suddenly and shatter.
5. 5

   Disconnect window motor electrical connector
   Locate the window motor electrical connector inside door cavity. Press release tab and disconnect connector from motor. If equipped with anti-pinch sensor, disconnect that connector as well. Mark connector orientation with tape if necessary for reassembly reference.
6. 6

   Detach window glass from regulator
   Locate the bolts securing window glass to regulator lift mechanism through access holes in door frame. Remove these attachment bolts while supporting glass. The glass is typically held by two bolts through the lower window channel. Once detached, ensure glass remains secured in raised position with tape or clamps.
   Torque spec

   Bracket Bolts22 Nm (16 lb-ft)
7. 7

   Remove window regulator mounting fasteners
   Identify all regulator mounting bolts around the door frame perimeter. Typically there are 4-6 mounting points. Remove all mounting bolts while supporting the regulator assembly. Note the position and length of each bolt as they may vary by location.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)
8. 8

   Extract regulator assembly from door
   Carefully maneuver the regulator assembly through the access opening in the door frame. The assembly may need to be rotated and tilted at specific angles to clear door reinforcement structures. Work slowly to avoid damaging door internals or scratching painted surfaces. Remove motor assembly if still attached to regulator.
   ⚠Regulator arms are under spring tension and may move suddenly. Control the assembly during removal.
9. 9

   Prepare and install new regulator assembly
   Compare new regulator to old unit to verify correct part. If motor is separate, transfer motor to new regulator if reusing, or install new motor assembly. Apply small amount of lithium grease to regulator slide points if not pre-lubricated. Carefully insert new regulator through door opening, maneuvering into position. Align all mounting holes with door frame threaded inserts.
10. 10

    Install regulator mounting bolts
    Install all regulator mounting bolts finger-tight first to ensure proper alignment. Once all bolts are started, torque each mounting bolt to specification in a cross pattern to ensure even seating. Verify regulator sits flush against door frame with no gaps.
    Torque spec

    Module Mounting Bolts8 Nm (6 lb-ft)
11. 11

    Attach window glass to regulator
    Remove temporary glass support. Carefully lower glass into door frame and align mounting holes with regulator lift mechanism brackets. Install glass attachment bolts and torque to specification. Ensure glass channel is properly seated on regulator arms before fully tightening.
    Torque spec

    Bracket Bolts22 Nm (16 lb-ft)
12. 12

    Reconnect electrical and test operation
    Reconnect window motor electrical connector and anti-pinch sensor if equipped. Temporarily reconnect battery negative terminal and test window operation before final reassembly. Window should operate smoothly through full travel without binding. Check auto-up and auto-down functions if equipped. Verify anti-pinch function operates correctly. Disconnect battery again before proceeding.
    ℹ️Window may require initialization procedure after installation. Cycle window fully down then fully up and hold switch for 2 seconds to program.
    Torque spec

    Battery Terminal Bolts6 Nm (4 lb-ft)
13. 13

    Reinstall speaker and seal vapor barrier
    Reconnect speaker electrical connector and install speaker back into door mounting location. Torque speaker mounting bolts to specification. Carefully reposition vapor barrier, ensuring complete seal around perimeter. Apply new sealing tape if original adhesive is compromised. Press firmly to ensure water-tight seal.
    Torque spec

    Module Mounting Bolts8 Nm (6 lb-ft)
14. 14

    Reinstall door panel assembly
    Reconnect all electrical connectors for switches and lighting. Position door panel and engage upper hooks first, then press firmly around perimeter to engage all retaining clips. Install door handle components and secure with screws. Torque all cover screws to specification. Verify all switches and controls operate correctly.
    Torque spec

    Cover Screws11 Nm (8 lb-ft)

Reassembly

1. Reconnect battery negative terminal and torque to 6.0 Nm
2. Initialize window auto function by cycling fully down, then up and holding switch 2 seconds
3. Verify all door panel clips are fully engaged with no gaps or rattles
4. Test window operation multiple times including auto-up, auto-down, and anti-pinch functions
5. Check door lock, mirror controls, and all switches for proper operation
6. Verify no water leaks by testing with low-pressure water spray if weather seals were disturbed

Verification

• Window operates smoothly through full range without binding or unusual noise
• Auto-up and auto-down functions work correctly without stopping prematurely
• Anti-pinch safety feature activates when obstruction is detected
• Window seals properly at full closed position with no wind noise or gaps
• Door panel is secure with no rattles or loose trim pieces
• All electrical switches and controls in door panel function normally
• No water entry into door cavity or interior after weather seal test

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