Tesla Model 3 Owners & Service Manuals

Tesla Model 3: Tube - Input - Coolant - Power Conversion System- Install

Tesla Model 3 2017-2025 Service Manual / Battery System / HV Battery Cooling System / Tube - Output - Coolant - Power Conversion System (Remove and Replace) / Tube - Input - Coolant - Power Conversion System- Install

Install

  1. Wipe up any spilled coolant.

Caution:  Spilled coolant can create an electrical path.

O-rings in good condition O-rings in good condition

  1. Make sure that the o-rings are not damaged and that they are properly seated in the connector groove prior to inserting the tube into the power conversion system. Replace components as necessary.

O-ring in poor condition O-ring in poor condition

  1. Lubricate the coolant input tube o-rings with Silaramic lubricant.
  2. Remove the plugs from the power conversion system and the battery flange.

Tube - Input - Coolant - Power Conversion System- Install

  1. Install the coolant input tube into the power conversion system and the battery flange

Example of a Secure Connection Example of a Secure Connection

  1. Firmly press down on the tube fittings, to make sure that the fittings are securely connected.

Caution:

Verify that both clips have fully engaged the barb on the power conversion system and battery flange, and then pull up on the fittings to check retention

  1. Remove the absorbent pads from around the coolant input tube fittings, and wipe up any spilled coolant.

Caution:

Spilled coolant can create an electrical path.

  1. Perform a penthouse coolant leak test. See Penthouse Coolant Leak Test.
  2. Connect the 12V auxiliary battery negative terminal only. Torque 6 Nm

Caution:

Do not follow the procedure to connect 12V power at this time

  1. Connect a 12V charger to the 12V auxiliary battery terminals
  2. Refill the coolant. See Penthouse Coolant (Drain and Refill).
  3. On the touchscreen, touch Controls > Safety & Security > Vehicle Power > Power Off.
  4. Disconnect the 12V charger from the 12V auxiliary battery terminals.
  5. Disconnect the 12V auxiliary battery negative terminal.
  6. Install the hinge tray into the hinges, and then lower the hinge tray.
  7. Fasten the clips that attach the harness to the hinge tray and hinges.
  8. Install the high voltage controller. See Controller - High Voltage (Remove and Replace).
  9. Install the pyrotechnic battery disconnect into the penthouse. See Pyrotechnic Battery Disconnect (Remove and Replace).

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