Tesla Model 3 Owners & Service Manuals

Tesla Model 3: Vent Assembly - HV Battery - LH (Remove and Replace)

Tesla Model 3 2017-2025 Service Manual / Battery System / HV Battery Enclosure / Vent Assembly - HV Battery - LH (Remove and Replace)

Vent Assembly - HV Battery - LH- Remove

Remove

  1. Use Toolbox to put the vehicle into Factory Mode.
  2. Invoke diagnostics on the touchscreen.
  3. Inspect the Notifications for either a BMS_a123 or a BMS_W123 alert.
  4. If:
  • Either alert is present - Contact Service Engineering. Do not perform this procedure.
  • Neither alert is present - Continue to the next step.
  1. Exit diagnostics and restart the touchscreen.
  2. Use Toolbox to exit Factory Mode.
  3. Disconnect 12V power. See 12V Power (Disconnect and Connect).
  4. Perform the vehicle electrical isolation procedure. See Vehicle Electrical Isolation Procedure.
  5. Remove the mid aero shield panel. See Panel - Aero Shield - Mid (Remove and Replace).

Vent Assembly - HV Battery - LH- Remove

  1. Release the fir tree clips that attach the coolant hoses to the LH shear plate.
  2. Put on personal protective equipment.

Warning: HV insulating gloves and leather glove protectors must be worn when exposed to the interior of the HV battery.

Vent Assembly - HV Battery - LH- Remove

  1. Remove the nuts (x5) that attach the LH vent assembly to the HV battery, and then remove the vent assembly from the battery.

Vent Assembly - HV Battery - LH- Install

Install

  1. Put on personal protective equipment.

Warning: HV insulating gloves and leather glove protectors must be worn when exposed to the interior of the HV battery.

Vent Assembly - HV Battery - LH- Install

  1. Install the LH vent assembly to the HV battery, and then install the nuts (x5) that attach the vent assembly to the battery. Torque 10 Nm
  2. Perform an HV battery air leak test. See HV Battery Air Leak Test.
  3. If the replacement vent assembly is without a breather valve, install one now. See Breathers - HV Battery (Remove and Replace).

Vent Assembly - HV Battery - LH- Install

  1. Fasten the fir tree clips that attach the coolant hoses to the LH shear plate.
  2. Install the mid aero shield panel. See Panel - Aero Shield - Mid (Remove and Replace).
  3. Connect 12V power. See 12V Power (Disconnect and Connect).

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