2025-02-20

LV Battery - Recover (Restore)

Correction code TBD 0.18 NOTE: Unless otherwise explicitly stated in the procedure, the above correction code and FRT reflect all of the work required to perform this procedure, including the linked procedures. Do not stack correction codes unless explicitly told to do so. NOTE: See Flat Rate Times to learn more about FRTs and how they are created. To provide feedback on FRT values, email LaborTimeFeedback@tesla.com. NOTE: See Personal Protection to make sure wearing proper PPE when performing the below procedure.

Procedure

  1. Disconnect the LV battery connector and keep the first responder loop connected. See LV Power (Disconnect and Connect).
  2. Connect an LV maintainer. See LV Maintainer (Connect and Disconnect) (Maintenance).
  3. Connect the LV battery connector.
    Informational PurposesAn informational icon, calling your attention
    Note
    Seat the LV battery connection and push the black connector lock inwards to secure. Engage the green locking tab when the connector is fully seated.
  4. Place the vehicle in Service Mode by using the touchscreen. See Service Mode.
  5. Disconnect the LV maintainer. See LV Maintainer (Connect and Disconnect) (Maintenance).
  6. Verify the status of the LV battery.
    1. Verify that the battery is not discharging at high current or self-protecting.
    2. Verify that the MOSFET state displays closed.
    3. Verify that the SOC is increasing through Service Mode > Low Voltage > Power Distribution > Li-Ion LV Battery.

    If after 2 minutes of PCS supporting, either of the following alerts is still present, then the LV battery has not auto-recovered. To force another recovery attempt, perform one of the following steps:

    • On the touchscreen, tap Service Mode > Low Voltage > Power Distribution > Close MOSFET.
    • Click the Actions tab, type "Reconnect LV Battery" into the search field, click PROC_VCFRONT_X_RECONNECT-LV-BATTERYvia Toolbox: (link)via Service Mode: Low Voltage ➜ Power Distribution ➜ Close MOSFET, click Run, and allow the routine to complete.
    Informational PurposesAn informational icon, calling your attention
    Note
    For CATL_LI_ION only: If the previous step does not successfully recover the battery, proceed with using the Tesla LV Li-Ion battery charger to recover the LV battery.
  7. Install the HEPA filter assembly. See HEPA FILTER (Remove and Replace).
  8. Exit Service Mode. See Service Mode.
  9. Raise the LH front window and close the LH front door.