Removal and Replacement

Heater Core And Evaporator Core Housing













Removal and Installation

NOTICE: Motorcraft(R) Electric Compressor Oil only must be used as a refrigerant system lubricant for hybrid vehicles. Addition of any oil other than Motorcraft(R) Electric Compressor Oil to the hybrid vehicle refrigerant system will damage the electric Air Conditioning (A/C) compressor and contaminate the refrigerant system. Refer to the Refrigerant Oil Adding procedure in Climate Control System - General Information and Diagnostics Refrigerant Oil Adding.

NOTE: If a heater core leak is suspected, the heater core must be leak tested before the heater core is removed. For additional information, refer to Climate Control System - General Information and Diagnostics Component Tests.

1. Drain the engine coolant. For additional information, refer to Engine Cooling Cooling System Draining, Filling and Bleeding or Engine Cooling - Hybrid Cooling System Draining, Filling and Bleeding.

2. Recover the refrigerant. For additional information, refer to Climate Control System - General Information and Diagnostics Air Conditioning (A/C) System Recovery, Evacuation and Charging.

3. Remove the instrument panel. For additional information, refer to Instrument Panel and Console Instrument Panel.

4. Remove the Thermostatic Expansion Valve (TXV) fitting nut and disconnect the fitting.
- Discard the gasket seals.

- To install, tighten to 15 Nm (133 lb-in).

5. Release the clamps and disconnect the heater inlet and outlet hoses from the heater core.

6. Remove the 6 heater core and evaporator core housing nuts.
- To install, tighten to 9 Nm (80 lb-in).

7. Remove the heater core and evaporator core housing in the following sequence.

1. Detach the heater core and evaporator core housing from the dash panel studs.

2. Rotate the RH side of the heater core and evaporator core housing toward the rear of the vehicle while pulling the housing toward the RH door opening to detach it from the rear footwell duct.

3. Remove the heater core and evaporator core housing.

8. Disassemble the heater core and evaporator core housing as needed.

9. NOTICE: Motorcraft(R) Electric Compressor Oil only must be used as a refrigerant system lubricant for hybrid vehicles. Addition of any oil other than Motorcraft(R) Electric Compressor Oil to the hybrid vehicle refrigerant system will damage the electric Air Conditioning (A/C) compressor and contaminate the refrigerant system. Refer to the Refrigerant Oil Adding procedure in Climate Control System - General Information and Diagnostics Refrigerant Oil Adding.

To install, reverse the removal procedure.

- Install new gasket seals.

- Add the correct amount of clean PAG oil (non-hybrid) or electric A/C compressor oil (hybrid) to the refrigerant system. For additional information, refer to the Refrigerant Oil Adding procedure in Climate Control System - General Information and Diagnostics Refrigerant Oil Adding.

10. Fill and bleed the engine cooling system. For additional information, refer to Engine Cooling Cooling System Draining, Filling and Bleeding or Engine Cooling - Hybrid Cooling System Draining, Filling and Bleeding.

11. Evacuate, leak test and charge the refrigerant system. For additional information, refer to Climate Control System - General Information and Diagnostics Air Conditioning (A/C) System Recovery, Evacuation and Charging.