Repair Procedures: Replacement

Disconnect the negative (-) battery terminal.
After loosening the nuts and bolts, remove the main crash pad and cowl cross bar assembly altogether.
(Refer to Heater - "HEATER UNIT ")
Disconnect the PTC heater connector (A).

Fig 1: Locating PTC Heater Connector
Courtesy of KIA MOTORS AMERICA, INC.
Remove the PTC heater core (A) after loosening the screws.

Fig 2: Removing PTC Heater Core Screws (1 Of 2)
Courtesy of KIA MOTORS AMERICA, INC.

Fig 3: Removing PTC Heater Core Screws (2 Of 2)
Courtesy of KIA MOTORS AMERICA, INC.
Remove the smart key unit (A) after loosening the screws.

Fig 4: Removing Smart Key Unit Screws
Courtesy of KIA MOTORS AMERICA, INC.
Remove the heater core cover (A) after loosening the screws.

Fig 5: Removing Heater Core Cover Screws
Courtesy of KIA MOTORS AMERICA, INC.
Remove the heater core (A) in the direction of arrow.

Fig 6: Removing Heater Core
Courtesy of KIA MOTORS AMERICA, INC.
Install in the reverse order of removal.
- 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.