Tesla Model 3 Owners & Service Manuals

Tesla Model 3: Flood Ports - 2nd Generation (Remove and Replace)

Tesla Model 3 2017-2025 Service Manual / Battery System / HV Battery Enclosure / Flood Ports - 2nd Generation (Remove and Replace)

Flood Ports - 2nd Generation (Remove and Replace) - Remove

Flood Ports - 2nd Generation (Remove and Replace)

Remove

  1. Connect a laptop with Toolbox 3 to the vehicle.
  2. In Toolbox, click in the Search field, and then click Tools.
  3. From the Tools menu, click Active Alerts.
  4. Click Read Alerts and check for a BMS_a123, BMS_a151, or a BMS_a035 alert
  5. If:
  • Any of the alerts are present - Investigate and correct the low isolation condition before continuing with this procedure
  • None of the alerts are present - Continue to the next step.
  1. Disconnect the laptop from the vehicle.
  2. Perform the vehicle electrical isolation procedure. See Vehicle Electrical Isolation Procedure.
  3. Remove the rear HV battery skid plate. See Skid Plate - HV Battery - Rear (Remove and Replace).

Flood Ports - 2nd Generation (Remove and Replace)- Remove

  1. Release the clips that attach the HV battery coolant hoses to the LH shear plate.

Flood Ports - 2nd Generation (Remove and Replace)- Remove

  1. Release the clips that attach the HV battery coolant hoses to the RH shear plate.

Flood Ports - 2nd Generation (Remove and Replace)- Remove

  1. Remove the LH 2nd generation flood port from the LH underside of the HV battery penthouse.

Note: Twist the flood port while pulling down.

  1. Repeat step 11 to remove the RH 2nd generation flood port from the RH underside of the HV battery penthouse.

Flood Ports - 2nd Generation (Remove and Replace) - Install

Install

  1. Use an IPA wipe to clean the area around the openings where the flood ports were removed.

Flood Ports - 2nd Generation (Remove and Replace)- Install

  1. Install a 2nd generation flood port into the opening at the LH underside of the HV battery penthouse.

Note: Press up firmly to fully seat the flood port and fasten the clips (x8) internally.

  1. Repeat step 2 to install a 2nd generation flood port into the RH underside of the HV battery penthouse.

Flood Ports - 2nd Generation (Remove and Replace)- Install

  1. Fasten the clips that attach the HV battery coolant hoses to the RH shear plate.

Flood Ports - 2nd Generation (Remove and Replace)- Install

  1. Fasten the clips that attach the HV battery coolant hoses to the LH shear plate.
  2. Check that the HV connections at the rear of the HV battery are tight and secure.
  3. Install the rear HV battery skid plate. See Skid Plate - HV Battery - Rear (Remove and Replace).
  4. Perform a penthouse air leak test. See Penthouse Air Leak Test.

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