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HOMESERVICE MANUALSTESLA2018MODEL 3 BASEREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTDRIVERS ASSISTANCE SYSTEMS - ADASELECTRICAL SYSTEM (2 OF 2) -- MODEL 3ELECTRONIC CONTROL MODULESMODULE - BODY CONTROLLER - LH (LHD) (NON-HEAT PUMP) - REMOVE AND REPLACEREMOVE
2018 Tesla Model 3 Base

Module - Body Controller - LH (LHD) (Non-Heat Pump) - Remove and Replace: Remove

2018 Tesla Model 3 BaseSECTION Remove
  1. Open all doors and lower all windows.
  2. Remove the 2nd row lower seat cushion. See SEAT CUSHION - LOWER - 2ND ROW (REMOVE AND REPLACE) .
  3. Remove the rear underhood apron. See UNDERHOOD APRON - REAR (REMOVE AND REPLACE) .
  4. Move the driver seat fully rearward.
  5. Disconnect 12V power. See 12V/LV POWER (DISCONNECT AND CONNECT) .
  6. Remove the LH instrument panel end cap. See END CAP - INSTRUMENT PANEL - LH (REMOVE AND REPLACE) .
  7. Remove the LH middle A-pillar trim. See TRIM - A-PILLAR - MIDDLE - LH (REMOVE AND REPLACE) .
  8. Remove the LH lower A-pillar trim. See TRIM - A-PILLAR - LOWER - LH (REMOVE AND REPLACE) .
  9. Remove the driver footwell cover. See COVER - FOOTWELL - DRIVER (REMOVE AND REPLACE) .
  10. Remove the driver knee airbag. See AIRBAG - KNEE - DRIVER (REMOVE AND REPLACE) .
  11. Remove the LH footwell duct. See DUCT - FOOTWELL - LH (REMOVE AND REPLACE) .
  12. Release the clip that attaches the electrical harness to the IP carrier.
    G14743841Courtesy of TESLA, INC.
  13. Disconnect the clips that attach the LH front door electrical connectors to the LH body controller module.
    G14743842Courtesy of TESLA, INC.
  14. Release the connector lock, and then disconnect the LH front door electrical connector from the LH body controller module.
    G14743843Courtesy of TESLA, INC.
  15. Release the connector lock, and then disconnect the driver seat electrical connector from the LH body controller module.
    G14743844Courtesy of TESLA, INC.
  16. Release the connector lock, and then disconnect the instrument panel electrical connector from the LH body controller module.
    G14743845Courtesy of TESLA, INC.
  17. Disconnect the HVAC electrical connector from the LH body controller module.
    G14743846Courtesy of TESLA, INC.
  18. Disconnect the inline electrical harness connector X909 from the LH body harness, and then separate it from the LH body controller module.
    G14743847Courtesy of TESLA, INC.
  19. Remove and discard the nut that attaches the 12V power cable to the LH body controller module.

    Tip: Use of the following tool(s) is recommended:

    • 10 mm 12-point deep socket
    • 1/4 in std ratchet
    • 1/4 in torque wrench (installation only)
    • 4 in extension
    G14743848Courtesy of TESLA, INC.
  20. Disconnect the front wiring harness connector from the LH body controller module.
    G14743849Courtesy of TESLA, INC.
  21. Disconnect the body 3 electrical connector from the LH body controller module.
    G14743850Courtesy of TESLA, INC.
  22. Disconnect the body 1 electrical connector from the LH body controller module.
    G14743851Courtesy of TESLA, INC.
  23. Disconnect the body 2 electrical connector from the LH body controller module.
    G14743852Courtesy of TESLA, INC.
  24. Disconnect the electrical connector from the headliner electrical connector.
    G14743853Courtesy of TESLA, INC.
  25. Release the electrical harness clips that attach the LH body controller module to the vehicle.
    G14743854Courtesy of TESLA, INC.
  26. Move the LH body harness away from the LH body controller module.
  27. Release the clip that attaches the LH front door electrical harness to the LH body controller module.
    G14743855Courtesy of TESLA, INC.
  28. Remove and discard the nut that attaches the LH body controller module to the vehicle.

    Tip: Use of the following tool(s) is recommended:

    • 10 mm 12-point deep socket
    • 1/4 in std ratchet
    • 1/4 in torque wrench (installation only)
    • 2 in extension
    G14743856Courtesy of TESLA, INC.
  29. Slide the LH body controller upwards to release the W-clip, and then move the LH body controller module out from underneath the instrument panel.
    G14743857Courtesy of TESLA, INC.
  30. Remove the LH body controller module from the vehicle.
  31. If the LH body controller module has a shroud installed, release the clips that attach the shroud to the module.
    NOTE: A shroud should be installed on the new body controller module even if one was not present during removal.
    G14743858Courtesy of TESLA, INC.
    G14743859Courtesy of TESLA, INC.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.