Tesla Model S Owners & Service Manuals

Tesla Model S: Reservoir Assembly - Coolant (Remove and Replace)

Tesla Model S (2012-2024) Service Manual / Thermal Management / Reservoir Assembly - Coolant (Remove and Replace)

Warning: If the 12V power supply is disconnected, do not attempt to open any doors with door glass in closed position. Failure to follow this instruction could result in door glass shatter.

Note: Before disconnecting the 12V power supply, ensure that the driver's door window is fully open. Failure to follow this instruction could result in vehicle lockout.

Removal

  1. Remove the LH front upper wheel arch liner (RH for RHD) (refer to procedure).
  2. Disconnect 12V power.
    • Rear wheel drive (RWD): Refer to procedure.
    • Dual Motor: Refer to procedure.
  3. Remove the underhood storage unit (refer to procedure).
  4. Disconnect the harness connections (x2):
    • Powertrain coolant pump connector (red arrow)
    • Coolant level sensor connector (yellow arrow)

    Reservoir Assembly - Coolant (Remove and Replace)

  5. Clamp the hose from the reservoir to the 4-way valve. Ensure that the clamp is placed just below the spring clamp on the reservoir.

    Reservoir Assembly - Coolant (Remove and Replace)

  6. From the LH wheelwell (RH for RHD), clamp the hose from the powertrain coolant pump to the rocker hose. Ensure that the clamp is placed just outside of the spring clamp.

    Reservoir Assembly - Coolant (Remove and Replace)

  7. Remove the reservoir cap.
  8. Siphon the coolant from the reservoir into a container.
  9. For RHD vehicles: release the bolt that secures the coolant reservoir upper bracket to the strut brace (torque 5 Nm).

    Reservoir Assembly - Coolant (Remove and Replace)

  10. Release the 1 nut that secures the coolant reservoir upper bracket (torque 5 Nm).

    Reservoir Assembly - Coolant (Remove and Replace)

  11. Release the bolts (x2) that secure the coolant reservoir to the crossmember (torque 5 Nm).

    Note: RHD vehicles have a refrigerant pipe routed very close to these bolts. Use a long extension to remove the bolts.

    Reservoir Assembly - Coolant (Remove and Replace)

  12. Release the 2 fasteners that secure the coolant reservoir bracket.
  13. Release the spring clamps (x2). Caution: Do not remove the clamps that were placed on the hoses in steps 5 and 6.
  14. Remove the coolant reservoir and powertrain coolant pump assembly from the vehicle.

    Caution: Plug the hoses to prevent ingress of moisture or dirt.

    Reservoir Assembly - Coolant (Remove and Replace)

  15. For RHD vehicles, remove the bolt that secures the bracket to the pump (torque 4 Nm).

    Reservoir Assembly - Coolant (Remove and Replace)

  16. Position the reservoir and pump assembly over a container to catch any coolant that is spilled in the next step.
  17. Release the spring clamp that secures the hose to the coolant pump assembly.

    Reservoir Assembly - Coolant (Remove and Replace)

  18. Clean up any spilled coolant.
Installation

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

  • When all components have been reinstalled, refill and bleed the cooling system (refer to procedure).

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