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Firmware Reinstall - Touchscreen: Procedure

  1. Remove the rear underhood apron. See Underhood Apron - 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:
  6. 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).

  7. FW versions before 2022.36 and feature/2022.8.10.6 (Tegra ONLY): 

    Partial:  Reinstalls the currently installed firmware package to replaced components having 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.
  8. 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".
  9. Verify that the firmware reinstallation was successful.
    • If the reinstallation failed, repeat from step  5.
    • 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.
  10. Disable Service Mode. See Service Mode .
  11. Disconnect the 12V support charger.
  12. Install the rear underhood apron. See Underhood Apron - Rear (Remove and Replace) .
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