LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Tesla >> 2021 >> Model S Performance >> Repair and Diagnosis >> External Pages >> Different car >> Section 24 (Maintenance, Inspection And Service -- Model Y) >> Firmware Service >> Software Reinstall - Touchscreen >> Software Reinstall (Li-Ion Battery)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Software Reinstall (Li-Ion Battery)

WARNING: This page is about a different car, the 2024 Tesla Model Y, 2023 Tesla Model Y, 2022 Tesla Model Y, 2021 Tesla Model Y, and 2020 Tesla Model Y. However, it is still accessible from the selected car via links, so may be relevant.
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  .
  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) .
scientia non olet · About LEMON Manuals