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Home >> Tesla >> 2020 >> Model X Long Range Plus >> Repair and Diagnosis >> General Information >> Computer Relearn >> Maintenance, Inspection And Service -- Model X >> Firmware Service >> Firmware Reinstall - Touchscreen >> Procedure
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Firmware Reinstall - Touchscreen: Procedure

  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 LV maintainer is set to "Lead Acid" or "Half On" mode. Failure to do so could damage the LV battery and/or the maintainer.
  3. Enable Service Mode. See Service Mode .
    NOTE: If the touchscreen is inoperable, or if this is a mobile service, enable Service Mode Plus through Toolbox 3 instead. See Service Mode Plus .
  4. Go to the Service Mode menu: touch the Service Mode "wrench" icon at the bottom of the vehicle touchscreen.
  5. On the vehicle touchscreen, touch Software Reinstall  , and then touch one of the reinstall methods described below:
    NOTE: The Partial  and Full  options are not available in firmware versions before 2021.24. For these earlier versions, the software reinstall is full by default. To achieve a partial software reinstall, either use Garage > Firmware > Parts Replacement Deploy > CAN ECU  , or use Toolbox 3 to perform a Service CAN Redeploy.
    • FW versions 2022.36 and feature/2022.8.10.6 (Tegra ONLY) onward: 
      • Full  : Reinstalls the currently installed firmware package to all components. Useful for when multiple modules are replaced at the same time (for example a DAS ECU and CAN ECU). DO NOT use this for MCU replacements.
      • CAN  : Reinstalls the currently installed firmware package to all CAN ECUs. Do not use this for MCU, instrument panel (IC), DAS, or FSD module replacements.
      • DAS  : Reinstalls the currently installed firmware package to replaced DAS/FSD ECUs.
      • IC (Tegra only)  : Reinstalls the currently installed firmware package to replaced ICs (Tegra only).
    • FW versions before 2022.36 and feature/2022.8.10.6 (Tegra ONLY): 
      • Partial  : Reinstalls the currently installed firmware package to all CAN ECUs. Do not use this for MCU, instrument panel (IC), DAS, or FSD module replacements.
      • Full  : Reinstalls the currently installed firmware package to all components. Useful for when multiple modules are replaced at the same time (for example a DAS ECU and CAN ECU). DO NOT use this for MCU replacements.
      NOTE: The Partial  and Full  options are not available in firmware versions before 2021.24. For these earlier versions, the software reinstall is full by default. To achieve a partial software reinstall, either use Garage > Firmware > Parts Replacement Deploy > CAN ECU  , or use Toolbox 3 to perform a Service CAN Redeploy.
  6. Touch REQUEST  or REINSTALL  .
    NOTE: If the touchscreen does not go blank or indicate that a firmware reinstall is in progress, go to the vehicle touchscreen and touch the Software  tab, and then touch SOFTWARE UPDATE > INSTALL NOW  . If a countdown timer appears, tap the timer until the clock reaches "0".
  7. Verify that the firmware reinstallation was successful.
    • If the reinstallation failed, repeat from step  4.
    • If the reinstallation succeeded, and the reinstallation was performed as one step of another service procedure, return to that procedure.
    • If the reinstallation succeeded, and the reinstallation was performed as a stand-alone procedure, continue to the next step.
  8. Disable Service Mode. See Service Mode .
  9. Disconnect the 12V support charger.
  10. Install the rear underhood apron. See Underhood Apron - Center - Rear (Remove And Replace) .
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