Software Reinstall - Touchscreen: Notes

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2023 Tesla Model 3, 2022 Tesla Model 3, 2021 Tesla Model 3, 2020 Tesla Model 3, and 2019 Tesla Model 3. However, it is still accessible from the selected car via links, so may be relevant.

Last modified: 01/12/2023 00:57:34

NOTE: See Personal Protection to make sure to wear proper PPE when performing below procedure.

Revision History:

2023-12-01: Updated the UI operations according to the UI of the latest firmware.
2023-06-08: Updated Li-Ion instructions: Vehicle software version 2023.12 or newer is required, and consolidated "contactors closed" and "contactors open" procedures.
2023-03-27: Revised Li-Ion instructions. The most notable (but not the only) updates are as follows: Contactors closed - check for "VCFRONT_a402_LVBatteryCannotSupportVehicle" alert before initiating FW reinstallation. Contactors open - Check LV battery SoC and HV Battery BMS state before initiating the 2nd FW reinstallation.

NOTE: This procedure describes how to use the vehicle touchscreen to reinstall the currently installed vehicle software to all CAN ECUs; DO NOT use this procedure to update the car computer. The package will not be downloaded from Tesla servers.

NOTE: The software reinstall process varies depending on whether the vehicle is equipped with a lead acid or li-ion battery.