Window Motor and Regulator - Front

This procedure covers the removal and replacement of the front window motor and regulator assembly on a 2017 Maserati Levante, including door panel removal and electrical connections.

Warnings

Tools required

Parts

• Front window regulator and motor assembly × 1 — Use OEM specification
• Door panel clips (assorted) × 1 — Replacement clips as needed
• Vapor barrier adhesive × 1 — 3M weatherstrip adhesive or equivalent

Preparation

1. Park vehicle on level surface and engage parking brake
2. Disconnect negative battery terminal and wait 2 minutes for airbag system to discharge
3. Lower window to approximately mid-position for easiest access to regulator bolts
4. Protect door sill and surrounding trim with towels or fender covers

Procedure

1. 1

   Remove door panel fasteners
   Remove the door pull cover by carefully prying it up with a trim tool. Remove two T25 Torx screws behind the door pull. Remove the screw behind the door handle trim. Carefully pry the door panel away from the door frame starting at the bottom rear corner, releasing all retaining clips. Lift the door panel up and off the door once all clips are released.
2. 2

   Disconnect door panel electrical connectors
   Disconnect all electrical connectors from the door panel including window switches, mirror controls, and door lock/unlock switch. Note connector positions and routing for reassembly. Carefully peel back the vapor barrier to access the door interior, taking care not to tear it.
3. 3

   Support window glass
   Raise the window glass to approximately 3-4 inches from the top position. Secure the glass in place using masking tape from the glass to the door frame exterior, or use a dedicated window support clamp. Ensure the glass is stable and will not fall when regulator is disconnected.
4. 4

   Disconnect window motor electrical connector
   Locate the window motor electrical connector inside the door. Press the release tab and disconnect the connector from the motor. If connector is corroded, spray with electrical contact cleaner and allow to dry before reconnecting during reassembly.
5. 5

   Separate glass from regulator
   Locate the two bolts securing the window glass to the regulator lift plate (accessible through access holes in the door frame). Remove these mounting bolts using an 8mm socket with extension. Carefully raise the glass fully up and ensure it is securely supported by the tape or clamp.
   Torque spec

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

   Remove regulator mounting bolts
   Locate all regulator mounting bolts (typically 3-4 bolts) securing the regulator assembly to the door frame. Remove all mounting bolts using a 10mm socket. Note the position of any ground strap connections if present.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)
7. 7

   Remove window motor bracket
   Remove the bracket bolts securing the window motor to the door frame using a 10mm socket. The motor may have 2-3 bracket mounting points depending on the specific door (driver or passenger side).
   Torque spec

   Bracket Bolts22 Nm (16 lb-ft)
8. 8

   Extract regulator assembly
   Carefully manipulate the regulator assembly through the large access opening in the door frame. The regulator may need to be rotated and angled to clear the door structure. Take care not to damage the vapor barrier or interior door components during removal.
9. 9

   Install new regulator assembly
   Position the new regulator assembly inside the door, routing it through the access opening in the same orientation as removal. Align all mounting bolt holes with the door frame. If the regulator came without the motor attached, transfer the motor from the old assembly or install new motor onto regulator.
10. 10

    Install regulator mounting bolts and motor bracket
    Install all regulator mounting bolts and tighten to specification. Install the motor bracket bolts and tighten to specification. Ensure any ground strap connections are properly positioned under bolt heads with clean contact surfaces.
    Torque spec

    Module Mounting Bolts8 Nm (6 lb-ft)

    Bracket Bolts22 Nm (16 lb-ft)
11. 11

    Connect motor and attach glass
    Connect the electrical connector to the window motor. Reconnect the battery negative terminal and tighten to specification. Temporarily test motor operation using the window switch (window should move freely without glass attached). Disconnect battery again. Lower the regulator lift plate to align with glass mounting points. Remove window support and carefully lower glass onto regulator lift plate. Install the glass mounting bolts and tighten to specification.
    Torque spec

    Battery Terminal Bolts6 Nm (4 lb-ft)

    Module Mounting Bolts8 Nm (6 lb-ft)
12. 12

    Test and calibrate window operation
    Reconnect battery negative terminal. Test window operation through full travel up and down multiple times, ensuring smooth operation without binding or unusual noise. Perform window auto-up/down initialization by fully lowering window, then fully raising and holding switch in up position for 2 seconds after window reaches top.
    Torque spec

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

    Reinstall vapor barrier and door panel
    Reattach the vapor barrier to the door frame using fresh adhesive if needed, ensuring a complete seal. Route all electrical connectors through the door panel. Connect all electrical connectors to their respective switches and controls. Align door panel over door frame and press firmly to engage all retaining clips. Install all door panel screws and covers, tightening fasteners to specification if torque-critical.
    Torque spec

    Cover Screws11 Nm (8 lb-ft)

Reassembly

1. Ensure vapor barrier is properly sealed to prevent water intrusion into door interior
2. Verify all door panel clips are fully seated before installing screws
3. Check that door lock and window switches operate correctly before finalizing reassembly
4. If any ground connections were disturbed, ensure contact surfaces are clean and connections are tight

Verification

• Test window operation through complete travel in both directions multiple times
• Verify window auto-up and auto-down functions work correctly (if equipped)
• Check for unusual noise, binding, or slow operation during window movement
• Ensure window seals properly against weatherstripping when fully closed
• Verify all door panel switches and controls function normally
• Check for water leaks by spraying door with water and inspecting interior

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