Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2018 Tesla Model X 100DFACTORY OEM SERVICE PROCEDURE
Firmware Reinstall - Touchscreen: Procedure
- Remove the rear underhood apron. See Underhood Apron - Center - Rear (Remove And Replace) .
- 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.
- 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 .
- Go to the Service Mode menu: touch the Service Mode "wrench" icon at the bottom of the vehicle touchscreen.
- 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.
- FW versions 2022.36 and feature/2022.8.10.6 (Tegra ONLY) onward:
- 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".
- 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.
- Disable Service Mode. See Service Mode .
- Disconnect the 12V support charger.
- 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.