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Home >> Tesla >> 2021 >> Model 3 Performance >> Repair and Diagnosis >> General Information >> Computer Relearn >> Maintenance, Inspection And Service -- Model 3 >> Firmware Service >> Software Reinstall - Touchscreen >> Software Reinstall (Li-Ion Battery)
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Software Reinstall (Li-Ion Battery)

CAUTION: Vehicle software version 2023.12 or newer is required in order to perform this procedure.
  1. Remove the rear underhood apron. See Underhood Apron - Rear (Remove And Replace) .
  2. Connect the LV maintainer to the vehicle, but do not disconnect the LV battery. See LV Maintainer (Connect and Disconnect) .
    NOTE: It is OK for the LV maintainer and LV battery to both be connected while performing this procedure.
  3. Enable Service Mode. See Service Mode .
  4. Go to the Service Mode menu: touch the Service Mode "wrench" icon at the bottom of the vehicle touchscreen.
    NOTE: Alternatively, for vehicles with older firmware versions: Touch Controls  (vehicle icon), and then touch Service Mode  .
  5. On the vehicle touchscreen, touch Software Reinstall > Reinstall  .
  6. Once the reinstallation is complete, check that the release notes appear on the touchscreen, indicating a successful reinstallation.
  7. Disconnect the LV maintainer from the vehicle. See LV Maintainer (Connect and Disconnect) .
  8. Disable Service Mode. See Service Mode .
  9. Install the rear underhood apron. See Underhood Apron - Rear (Remove And Replace) .