Tesla Model 3 Owners & Service Manuals

Tesla Model 3: Coolant Pump - HV Battery (Remove and Replace)

Tesla Model 3 2017-2025 Service Manual / Thermal Management / Cooling System / Coolant Pump - HV Battery (Remove and Replace)

Coolant Pump - HV Battery - Remove

Coolant Pump - HV Battery (Remove and Replace)

Remove

  1. Remove the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  2. Disconnect 12V power. See 12V Power (Disconnect and Connect).
  3. Remove the front aero shield panel. See Panel - Aero Shield - Front (Remove and Replace).
  4. Position a coolant drain under the superbottle.
  5. If the vehicle is equipped with dual motors, perform these steps. Otherwise, go to step 6.
  1. Install a foldable funnel underneath the front drive unit heat exchanger.

Note: Make sure the foldable funnel covers the front drive unit 12V connector, steering rack, and is positioned to catch fluid from the heat exchanger coolant outlet.

  1. Release the clip and disconnect the front drive unit heat exchanger to superbottle hose from the heat exchanger coolant outlet, and then drain the coolant into the coolant drain container.  
  2. Install plugs into the front drive unit heat exchanger to superbottle hose and the heat exchanger coolant outlet.

Coolant Pump - HV Battery- Remove

  1. Release the clip that attaches the electrical harness to the superbottle.

Coolant Pump - HV Battery- Remove

  1. Disconnect the electrical harness from the HV battery coolant pump connector.

Coolant Pump - HV Battery- Remove

  1. Remove and discard the bolts that attach the HV battery coolant pump to the superbottle, and then remove the pump from the superbottle.

Coolant Pump - HV Battery - Install

Install

  1. Remove and discard any o-rings or debris in the superbottle where the coolant pump will install.
  2. Make sure that new o-rings are installed onto the new coolant pump.
  3. Lubricate the o-rings with Silaramic lubricant.
  4. Position the outlet of the coolant pump in the up position, and insert the coolant pump into the superbottle.
  5. Make sure that the coolant pump is fully seated in the superbottle.

Coolant Pump - HV Battery- Install

  1. Hand-tighten new screws to attach the coolant pump to the superbottle.
  2. Tighten the coolant pump screws in a cross-pattern. Torque 1.8 Nm
  3. Connect the electrical harness to the coolant pump connector.

Coolant Pump - HV Battery- Install

Coolant Pump - HV Battery- Install

  1. Fasten the clip that attaches the electrical harness to the superbottle.
  2. Connect 12V power. See 12V Power (Disconnect and Connect).
  3. Perform a cooling system vacuum refill. See Cooling System (Vacuum Refill).
  4. Install the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  5. Install the cabin intake duct assembly. See Duct - Cabin Intake (Remove and Replace).
  6. Remove the coolant drain from under the vehicle.
  7. Install the front aero shield panel. See Panel - Aero Shield - Front (Remove and Replace).

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