2018 Tesla Model 3 BaseFACTORY OEM SERVICE PROCEDURE

Software Reinstall - Toolbox: Notes

Last modified: 24/07/2023 17:02:42

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

Revision History:

  • 2023-06-08: Updated Li-Ion instructions: Vehicle software version 2023.12 or newer is required, and consolidated "contactors closed" and "contactors open" procedures.

NOTE: This procedure describes how to reinstall the currently installed vehicle software using a laptop with Toolbox 3 locally connected. The package will not be downloaded from Tesla servers.
  • Partial:Β  Reinstalls the currently installed software package to replaced components having CAN ECUs.
  • Full:Β  Reinstalls the currently installed software package to the car computer and replaced components having CAN ECUs.

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

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:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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