Tesla Model X: 4 Way Coolant Valve - Series/Parallel (Remove and Replace)

Removal

1. Remove the cooling fan module (refer to procedure).
2. Remove the battery cage (refer to procedure).
3. Remove the bolts (x4) that secure the 3-way and 4-way valves to the plastic support beam (torque 5 Nm).

    

4. Release the clips (x2) that secure the coolant hose to the plastic support beam.

    

5. Remove the bolts (x2) that secure the plastic support beam to the front frame rails (torque 6.5 Nm).

    

6. Remove the plastic support beam from the vehicle.
7. Disconnect the electrical connector from the 4-way valve.

    

8. Place a container beneath the 4-way valve to catch spilled coolant.
9. Clamp the following coolant hoses:
   • 4-way valve to Battery Pump 1
   • 4-way valve to coolant reservoir
   • HV battery to 4-way valve

    

10. Release the locking rings (x4) that secure the coolant hoses to the 4-way valve. Release the coolant hoses from the nipples on the 4-way valve. Tip: Release the locking ring that secures the coolant hose that goes to the 3-way valve first. This provides more mobility when releasing the remaining locking rings. Note: Components have been removed in this graphic to aid clarity.

     

11. Remove the 4-way valve from the vehicle.

Installation procedure is the reverse of removal, except for the following:

1. Recharge the refrigerant.
2. Refill and bleed the cooling system (refer to procedure).