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Harness - Media Control Unit - Retrofit: Restore

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2020 Tesla Model S, 2019 Tesla Model S, 2018 Tesla Model S, 2017 Tesla Model S, and 2016 Tesla Model S. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect to Toolbox.
    NOTE: Remove any necessary trim for access.
  2. In Toolbox, select MCU Cloner > MCU Restore  .
    NOTE: If the MCU backup failed in the "Backup" section of this procedure, in Toolbox, select MCU Restore from IC  to restore the MCU files.
  3. Update the vehicle firmware. See Firmware Update .
    NOTE: Make sure that the MCU is not in Factory Mode  before installing firmware.
  4. If the MCU backup failed in the "Backup" section of this procedure, in Toolbox, select Reset Remote Unlock Security Key > Start  .
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