Tesla Model S Owners & Service Manuals

Tesla Model S: HVAC Assembly (Remove and Replace)

Tesla Model S (2012-2026) Service Manual / Thermal Management / HVAC Assembly (Remove and Replace)

Removal

  1. Remove cross car beam (refer to procedure).
  2. Recover refrigerant from AC system (refer to procedure).
  3. Disconnect AC connection to HVAC, discard 'O' rings (torque 22 Nm).

    HVAC Assembly (Remove and Replace)

  4. Remove screws (x2) securing bulkhead TXV valve to HVAC (torque 6 Nm).
  5. Disconnect TXV harness connector.

    HVAC Assembly (Remove and Replace)

  6. Remove and discard 'O' ring. Caution: Lubricate new O-rings with clean refrigerant oil.
  7. Disconnect HVAC harness connectors (x10).
  8. LHD vehicles only: Remove the body controller (BCM) (refer to procedure).
  9. Remove bolts (x7) securing HVAC to bulkhead (torque 6 Nm).

    HVAC Assembly (Remove and Replace)

  10. Disconnect HVAC drain tube.
  11. Remove plastic rivets (x3) securing front LH shock tower cover to body. Release cover and remove.

    HVAC Assembly (Remove and Replace)

  12. Working from above, disconnect harness connector from DC-DC module.

    Note: Components have been removed in this graphic to aid clarity.

    HVAC Assembly (Remove and Replace)

  13. Attach a tether to the PTC heater harness.
  14. With assistance carefully release PTC harness from bulkhead and withdraw into footwell.
  15. Disconnect tether from harness connector. Note: Do not withdraw tether from bulkhead.
  16. Carefully remove HVAC and place on padded surface to prevent damage.

Caution: Plug pipe connections to prevent ingress of moisture or dirt.

Installation
  1. Installation procedure is the reverse of removal. Caution: Lubricate new O-rings with clean refrigerant oil.
  2. With assistance carefully pull DC-DC harness through bulkhead. Follow route left by tether, check surrounding components are not compromised. Cable tie and clip harness and hoses to avoid rubbing.
  3. Disconnect tether from harness connector.

    READ NEXT:

     Actuator - Inlet (Remove and Replace)

    Removal Remove glove box assembly (refer to procedure) Disconnect actuator harness connector. Remove screws (x3) securing recirculation actuator to HVAC assembly (torque 1 Nm).

     Actuator - Driver's Temperature (Remove and Replace)

    Removal Remove IP carrier (refer to procedure) Disconnect duct temperature sensor harness connector. Remove screw securing duct to HVAC assembly and position duct aside (torque 1

     Actuator - Mode (Remove and Replace)

    Removal Remove IP carrier (refer to procedure) Disconnect duct temperature sensor harness connector. Remove screw securing duct to HVAC assembly and position duct aside (torque 1

    SEE MORE:

     Front Drive Unit (From Below) (Remove and Install) - Installation

    Installation Installation procedure is the reverse of removal, except for the following: Use alcohol wipes to clean the mating surfaces between the RH motor mount and drive unit. When securing the motor to the mounts, use the shim tools to ensure

     Troubleshooting

    Charging does not start. The green "Ready" light in the software application is dimmed. Check that the HV power supply is plugged in and turned on. Check the connections at the rear of the charger/interface control box. Discharging does not start.

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