2018 Tesla Model X 100DFACTORY OEM SERVICE PROCEDURE

Firmware Reinstall - Toolbox: Procedure

NOTE: Make sure the vehicle is operating firmware version 2020.36.11 or newer before proceeding. If vehicle firmware is older than 2020.36.11, update the firmware. See Firmware Update .
  1. Remove the rear underhood apron. See Underhood Apron - Center - Rear (Remove And Replace) .
  2. Connect a 12V support charger to make sure power is not lost during the firmware reinstall.
    CAUTION: Make sure the charger supports lead acid 12V batteries. Connecting a 15V charger can damage the vehicle and/or the charger.
  3. Connect a laptop with Toolbox 3 to the vehicle.
  4. In Toolbox, click the Actions/Autodiag  tab, and then type "Redeploy" in the search field.
  5. Run  the appropriate routine and wait for the reinstallation to complete. Reinstallation status can be monitored on the vehicle touchscreen.
    • Service CAN Redeploy (UPDATE_CAN-REDEPLOY):  A "partial" firmware reinstallation that reinstalls the currently installed firmware package to all module, ECU, and component replacements, with the exception of the MCU, IC, and DAS/FSD module.
    • Service Redeploy (UPDATE_SERVICE-REDEPLOY):  A "full" firmware reinstallation that reinstalls the currently installed firmware package to all module, ECU, and component replacements, including the IC and DAS/FSD module.
  6. Verify that the firmware package was successfully installed.
    • If the reinstall failed, repeat from step  4.
    • If the reinstall succeeded, and the reinstall was performed as one step of another service procedure, return to that procedure.
    • If the reinstall succeeded, and the reinstall was performed as a stand-alone procedure, continue to the next step.
  7. Disconnect the laptop from the vehicle.
  8. Disconnect the 12V support charger.
  9. Install the rear underhood apron. See Underhood Apron - Center - Rear (Remove And Replace) .
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.