Kia Sedona: Heater Core Repair procedures - Heater - Heating,Ventilation And Air Conditioning - Kia Sedona YP Service ManualKia Sedona: Heater Core Repair procedures

Third generation YP (2014-2021) / Kia Sedona YP Service Manual / Heating,Ventilation And Air Conditioning / Heater / Heater Core Repair procedures

Replacement
1.
Disconnect the negative (-) battery terminal.
2.
After loosening the nuts and bolts, remove the main crash pad and cowl cross bar assembly (A) altogether.
(Refer to Heater - "Heater Unit")
3.
Remove the heater core cover (A) after loosening the mounting screws.

4.
Pull out the heater core (A) from the heater unit.

5.
Install in the reverse order of removal.
When 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 before installing them. Be sure to use the right O-rings for R-134a to avoid leakage.
Immediately after using the oil, replace the cap on the container, and seal it to avoid moisture absorption.
Do not spill refrigerant oil on the vehicle as it may damage the paint. If refrigerant oil comes in contact with the paint, wash it off immediately.
Apply sealant to the grommets.
Make sure that there is no air leakage.
Charge the system and test its performance.
Do not interchange the inlet and outlet heater hoses and install the hose clamps securely.
Refill the cooling system with engine coolant.
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