Heater Core

Repair Procedures

Replacement

1. 1
   Disconnect the negative (-) battery terminal.
2. 2
   Remove the heater and blower assembly. (Refer to Heater - "Heater")
3. 3
   Loosen the mounting nuts and screws and remove the Surround View Monitor (SVM) unit (A).

   

4. 4
   Loosen the mounting screws and remove the heater core cover (A).

   

5. 5
   Loosen the mounting screws and remove the PTC heater (A).

   

6. 6
   Separate the heater core (A) from the heater unit.

   

7. 7
   Install in the reverse order of removal.

   If installing a new heater core, add refrigerant oil (PAG OIL). Replace the O-rings with new ones at each fitting and apply a thin coat of refrigerant oil to them before installation. Be sure to use O-rings suitable for R-134a or R-1234yf to prevent leakage. Immediately after use, close the oil container cap tightly to prevent moisture absorption. Do not spill refrigerant oil on the vehicle; it may damage the paint. If refrigerant oil gets on the paint, wipe it off immediately. Apply sealant to the bushings. Check that there is no air leakage. Charge the system and check that it operates properly. Do not reverse the heater inlet and outlet hoses, and securely install the clamps. Fill the cooling system with engine coolant.