2018 Tesla Model 3 BaseFACTORY OEM SERVICE PROCEDURE

Module - Body Controller - Front (Dual Motor) - Remove and Replace: Remove

  1. Remove the 2nd row lower seat cushion. See SEAT CUSHION - LOWER - 2ND ROW (REMOVE AND REPLACE) .
  2. Remove the rear underhood apron. See UNDERHOOD APRON - REAR (REMOVE AND REPLACE) .
  3. Remove the cabin intake duct. See DUCT - CABIN INTAKE (REMOVE AND REPLACE) .
  4. Remove the underhood storage unit. See UNDERHOOD STORAGE UNIT (REMOVE AND REPLACE) .
  5. Remove the LH and RH wiper arms. See WIPER ARMS (REMOVE AND REPLACE) .
  6. Remove the LH and RH shock tower covers. See COVER - SHOCK TOWER - LH (REMOVE AND REPLACE) .
  7. Remove the cowl screen panel. See PANEL - COWL SCREEN (REMOVE AND REPLACE) .
  8. Disconnect 12V power. See 12V/LV POWER (DISCONNECT AND CONNECT) .
  9. Remove the 12V auxiliary battery. See 12V/LV BATTERY (REMOVE AND REPLACE) .
  10. Remove the bolt that attaches the 12V battery rear hook tie down to the body, and then remove the tie down from the body.
    G14752312Courtesy of TESLA, INC.
  11. Remove the nuts (x2) that attach the superbottle to the thermal beam.
    G14752313Courtesy of TESLA, INC.
  12. Remove the upper bolts (x2) that attach the battery bracket to the vehicle.
    G14752314Courtesy of TESLA, INC.
  13. Release the clip that attaches the coolant hose to the 12V battery bracket.
    G14752315Courtesy of TESLA, INC.
  14. Release the clip that attaches the 12V battery vent hose to the 12V battery bracket.
    G14752316Courtesy of TESLA, INC.
  15. Loosen the inner bolts that attach the shock tower brace to the RH shock tower.
    G14752317Courtesy of TESLA, INC.
  16. Loosen the outer bolt that attaches the shock tower brace to the RH shock tower.
    G14752318Courtesy of TESLA, INC.
  17. Remove the inner bolts that attach the shock tower brace to the LH shock tower.
    G14752319Courtesy of TESLA, INC.
  18. Remove the outer bolt that attaches the shock tower brace to the LH shock tower.
    G14752320Courtesy of TESLA, INC.
  19. Shift the LH side of the shock tower brace towards the front of the vehicle to increase working space.
  20. Remove the bolt that attaches the thermal harness cover to the front body controller module, and then remove the cover from the module.
    G14752321Courtesy of TESLA, INC.
  21. Disconnect the thermal harness from the front body controller module connector.
    G14752322Courtesy of TESLA, INC.
  22. Release the clip that attaches the suction/liquid lines to the body near the TXV, and then move the electrical harness aside to gain access to the front body controller module.
    G14752323Courtesy of TESLA, INC.
  23. Remove the bolts (x9) that attach the front body controller module cover to the front body controller module, and then remove the cover.
    G14752324Courtesy of TESLA, INC.
  24. Disconnect the electrical harness from the front body controller module connectors (x4).
    G14752325Courtesy of TESLA, INC.
  25. Remove and discard the nuts (x6) and bolt that attach the power and ground cables to the front body controller module.
    G14752326Courtesy of TESLA, INC.
  26. Remove the bolts (x3) that attach the front body controller module to the body.
    G14752327Courtesy of TESLA, INC.
  27. Release the clips (x2) that attach the bottom of the front body controller module to the body, and then remove the lower busbar from the stud.
    G14752328Courtesy of TESLA, INC.
  28. Remove the bolt that attaches the ground strap to the upper rear of the front body controller module, and then remove the ground strap from the module.
    G14752329Courtesy of TESLA, INC.
  29. Remove the bolt that attaches the ground strap to the lower right side of the front body controller module, and then remove the ground strap from the module.
    G14752330Courtesy of TESLA, INC.
  30. Remove the bolt that attaches the ground strap to the lower rear of the front body controller module, and then remove the ground strap from the module.
    G14752331Courtesy of TESLA, INC.
  31. Remove the front body controller module from the vehicle.
    G14743825Courtesy of TESLA, INC.
Factory Service Tools

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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.

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