Mike's Workshop Manuals: Service manuals for every vehicle
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 (Lead Acid Battery)

Software Reinstall (Lead Acid 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.
  1. Remove the rear underhood apron. See UNDERHOOD APRON - REAR (REMOVE AND REPLACE) .
  2. Connect an LV battery maintainer to make sure power is not lost during the software reinstall.
    CAUTION: If using a 50A or 80A maintainer, make sure the maintainer is set to "Lead Acid" or "Half Power" mode. Failure to do so could damage the LV battery.
    G00634664Courtesy of TESLA, INC.
  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.
    G00634664Courtesy of TESLA, INC.
  8. Disable Service Mode. See SERVICE MODE .
  9. Install the rear underhood apron. See UNDERHOOD APRON - REAR (REMOVE AND REPLACE) .
scientia non olet · About Mike's Workshop Manuals