Tesla Model 3 Owners & Service Manuals

Tesla Model 3: Flood Ports - 2nd Generation (Retrofit)

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

Flood Ports - 2nd Generation (Retrofit)

Procedure

Note: This procedure destructively removes the 1st generation flood ports and installs 2nd generation flood ports.

  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 (Retrofit)

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

Flood Ports - 2nd Generation (Retrofit)

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

Flood Ports - 2nd Generation (Retrofit)

  1. Use a 90º pick to permanently bend open the tabs (x4) of the LH 1st generation flood port retainer ring.

Note: It is acceptable if the tabs break off.

Flood Ports - 2nd Generation (Retrofit)

  1. Pull the retainer ring of the LH flood port down and off

Twist the retainer ring as it is pulled down.

Flood Ports - 2nd Generation (Retrofit)

  1. Rotate the LH flood port core 60º and pull it down and out of the underside of the HV battery penthouse.
  2. Repeat step 11 through step 13 for the RH 1st generation flood port.
  3. Use an IPA wipe to clean the area around the openings where the flood ports were removed.

Flood Ports - 2nd Generation (Retrofit)

  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 16 for the RH underside of the HV battery penthouse

Flood Ports - 2nd Generation (Retrofit)

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

Flood Ports - 2nd Generation (Retrofit)

  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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