Replace a failed front power window regulator on a 2024 Model S Long Range. The job requires removing the front door trim panel and water-resistant vapor barrier to access the regulator assembly inside the door cavity.

Warnings

Tools required

Parts

• Front door window regulator assembly (driver or passenger as applicable) × 1 — OEM Tesla Model S 2021+ refresh front regulator — verify by VIN
• Butyl sealant / vapor barrier adhesive (for re-sealing door barrier) × 1 — Generic automotive butyl rope sealant
• Replacement plastic clips for door card (if any break on removal) × 1 — Tesla Model S door panel retainer clips — generic equivalent acceptable

Preparation

1. Park on level ground, place in P, engage parking brake.
2. Exit ALL doors with the key fob taken at least 10 feet away from the vehicle. Wait at least 2 minutes for HV systems to fully de-energize, even on this non-HV job.
3. Open the frunk and disconnect the 12V low-voltage battery (located under the front nose cowl panel on Model S). Loosen the negative terminal first, isolate, and tuck away.
4. DO NOT touch, cut, or pierce ANY orange cable — these are high-voltage and lethal. If you encounter an orange cable, an HV component, or are unsure if a system is de-energized: STOP and consult a Tesla-certified technician.
5. Lower the affected window approximately halfway (do this BEFORE disconnecting 12V) to expose the glass-to-regulator clamp bolts, OR fully raise it and tape the glass to the door frame to support it during regulator removal — choose method based on the replacement regulator's shipping position.
6. Gather trim tools, fasteners organizer, and a soft pad to lay the door card on once removed.
7. Verify the replacement regulator matches by part number / VIN before disassembly.

Procedure

1. 1

   Mark glass position and secure the window
   If the glass is in the up position, use painter's tape across the top of the glass and door frame to support and reference it. If down, note the exact height. This prevents the glass from dropping into the door cavity once the regulator clamps are released.
2. 2

   Remove door panel trim covers and fasteners
   Carefully pry off the trim cap behind the interior door handle and any covers concealing fasteners. Remove the exposed Torx/Phillips screws securing the door card to the door shell. Work slowly with a non-marring trim tool — Tesla door cards use a combination of screws and edge clips.
   ⚠Do not pry against the painted aluminum door skin — only against the inner door shell flange.
3. 3

   Release the door card from the door shell
   Starting at a lower corner, release the perimeter retaining clips by pulling straight outward (not down or up). Once the perimeter is free, lift the door card slightly upward to disengage the upper window-belt hook from the door. Rotate the panel away enough to access the connectors behind it.
4. 4

   Disconnect door card harnesses
   Disconnect each electrical connector for the door switch pack, speaker, tweeter, ambient lighting, and any capacitive/handle harness. Press the connector tab fully — do not pull on wires. Set the door card on a soft pad, outside-face up.
   ⚠If a connector resists, re-check the lock tab — forcing it will break the housing and require a new sub-harness.
5. 5

   Peel back the vapor barrier
   Carefully peel the plastic/foam water-resistant vapor barrier away from the butyl sealant along the edge needed to access the regulator bolts. Preserve the butyl bead — it is reusable if kept clean. Tuck the barrier upward and tape it out of the way.
   ℹ️A damaged vapor barrier will cause water intrusion, wind noise, and eventual mold inside the door card. Replace it if torn.
6. 6

   Access and release the window glass from the regulator
   Through the access holes in the inner door shell, locate the two glass-to-regulator clamp bolts. Loosen them so the glass can be lifted free of the regulator carrier. With a helper supporting the glass, lift the glass upward and either secure it in the fully-up position with tape against the door frame, or remove it from the door and set it aside on a padded surface.
   ⚠️Frameless glass will fall into the door cavity once unclamped — support it before fully releasing the bolts.
7. 7

   Disconnect the regulator motor harness
   Locate the motor connector on the regulator assembly and release the lock tab. Unclip any harness retainers attaching the wiring to the regulator frame so the harness stays with the door.
8. 8

   Remove the regulator assembly from the door
   Remove the regulator-to-door mounting fasteners (typically Torx or hex). Support the regulator while removing the last fastener so it doesn't drop. Maneuver the assembly out through the large access opening in the inner door shell, rotating as needed.
   ⚠Do not let the regulator's cable/track scrape the painted door interior on the way out.
   Torque spec

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

   Compare old and new regulators
   Verify the replacement regulator matches the original in mounting points, motor orientation, connector type, and carrier height. Transfer any rubber bumpers or cable guides if not pre-installed on the new unit.
10. 10

    Install the new regulator
    Maneuver the new regulator through the access hole and align it with the mounting holes in the inner door shell. Hand-start all mounting fasteners before torquing. Torque the regulator mounting fasteners to the manufacturer-specified value — refer to Tesla Service Manual for this fastener; if the verified spec applies (Module Mounting Bolts), torque accordingly.
    ℹ️Do not invent a torque value if unsure — under-torquing causes rattles, over-torquing strips the aluminum door shell threads.
    Torque spec

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

    Reconnect the regulator motor and reattach the glass
    Plug the motor harness back into the new regulator and seat the lock tab. Lower the glass back into the regulator carrier clamps, align to your reference marks (or center the glass squarely in the frame), and tighten the glass clamp bolts evenly. Torque to OEM specification — refer to Tesla Service Manual.
    ⚠Misaligned glass will bind, leak, or fail to seal against the roof gasket — verify alignment before final tightening.

Reassembly

1. Temporarily reconnect the 12V battery and cycle the window fully up and down to confirm smooth travel and proper seal at the top of the door before closing up the door.
2. If travel is correct, disconnect the 12V again before reinstalling the vapor barrier.
3. Re-seat the vapor barrier into the original butyl bead, adding fresh butyl sealant where the old bead was disturbed. Press firmly to ensure a continuous water seal.
4. Reconnect all door card harnesses (switch pack, speaker, tweeter, ambient lighting, handle/capacitive).
5. Align the door card top hook over the window belt-line, then press the perimeter clips into place working around the panel.
6. Reinstall all door card screws and trim caps. Do not overtighten — the threads back into plastic or thin aluminum.
7. Reconnect the 12V battery (positive first, then negative) and torque the terminal hardware.
8. Close the frunk and verify it latches normally.

Verification

• Initialize the window: with the door closed and ignition active (brake pedal pressed), hold the window switch fully down until the glass bottoms out, hold an additional 2 seconds, then hold fully up until the glass reaches the top, hold an additional 2 seconds. This re-teaches the pinch-protection end stops.
• Test auto-up and auto-down operation from both the door switch and the touchscreen window controls.
• Test pinch protection by gently obstructing the glass during auto-up — it should reverse immediately.
• Close the door and listen for wind seal — the frameless glass should rise into the roof gasket and drop slightly when the door opens (Tesla 'index' behavior). If indexing fails, the regulator end-stops may not be calibrated.
• Spray water along the top of the glass and inspect inside the door card the next day for leaks — this confirms vapor barrier integrity.
• Check the Tesla service screen (Service Mode if available) for any door module DTCs and clear them.
• Note: while the door is apart is a good time to verify the cabin air filter service interval — Tesla recommends replacement every 2 years (3 years for HEPA-equipped Model S).

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