2025-03-20

LV Battery - Recover (Restore)

Correction code 17010008 0.06 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.

Informational PurposesAn informational icon, calling your attention
Note
The LV battery won't recover unless the HV system is healthy and supporting the vehicle. Make sure that the HV system is functioning correctly before attempting to recover the LV battery .
  1. Remove the rear underhood apron. See Underhood Apron - Rear (Remove and Replace).
  2. Disconnect the LV battery connector and keep the first responder loop connected.
    Informational PurposesAn informational icon, calling your attention
    Note
    Release the green locking tab, pull the black connector lock outwards to release the connector, and then pull up to disconnect the connector.
  3. Connect the LV maintainer.
    1. Release the positive jump post cover.
    2. Attach the positive LV maintainer clamp to the positive jump post.
    3. Attach the negative LV maintainer clamp to the bolt head located between the brake fluid reservoir and the front trunk.
    4. Connect the LV maintainer to a power supply and switch it on.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    To avoid damaging the vehicle, DO NOT allow the positive terminal to make contact with any other metal components than the positive jump post.
  4. Connect the LV battery connector.
    Seat the LV battery connector on the LV battery, push the black connector lock inwards to engage the connector, and then seat the green locking tab after the lock is fully secured.
  5. Open LH front door and lower the window.
  6. Enable Service Mode. See Service Mode.
  7. Disconnect the LV maintainer.
    Informational PurposesAn informational icon, calling your attention
    Note
    Power off the LV maintainer and release the connections from the vehicle. Reinstall the positive jump post cover.
  8. Verify the status of the LV battery.
    • If after 2 minutes of PCS support, the alert VCFRONT_a478_LVBMS_MOSFET_Open is present, the LV battery has not auto-recovered. Auto-recovery can be manually attempted via the touchscreen or Toolbox as outlined in the next step.
  9. Perform the following routine using Service Mode or Toolbox (see 0005 - Service Modes): PROC_VCFRONT_X_RECONNECT-LV-BATTERYvia Toolbox: (link)via Service Mode: Low Voltage ➜ Power Distribution ➜ Close MOSFET
  10. If the steps above do not succeed in auto-recovering the LV battery, recover the battery using the Tesla Li-Ion battery charger.
    • Verify that the battery is not discharging at high current and is not self-protecting.
    • Go to Service Mode > Low Voltage > Power Distribution > LV Battery and confirm that LV battery SoC is increasing.
    • Verify that the LV Battery MOSFET status is Closed.
  11. Exit Service Mode. See Service Mode.
  12. Install the rear underhood apron. See Underhood Apron - Rear (Remove and Replace).