Hyundai Palisade (LX2): Heater / Evaporator Core

Hyundai Palisade (LX2) 2020-2026 Service Manual / Heating,Ventilation And Air Conditioning / Heater / Evaporator Core

Repair procedures

Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Remove the heater and blower assembly.
(Refer to Heater - "Heater Unit")
3.
Remove the heater core.
(Refer to Heater - "Heater Core")
4.
Loosen the mounting screws and remove the evaporator core cover (A).

Hyundai Palisade. Repair procedures
5.
Separate the evaporator temperature sensor (A) from the evaporator core.

Hyundai Palisade. Repair procedures
6.
Remove the evaporator core (A) from the heater unit.

Hyundai Palisade. Repair procedures
7.
Install in the reverse order of removal.
Hyundai Palisade. Repair procedures   
•
Be careful that the inlet and outlet pipe are not bent during heater core and evaporator core removal/installation.
Hyundai Palisade. Repair procedures   
•
If you're installing a new evaporator 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 or R-1234yf to avoid leakage.
•
Immediately after using the oil, replace the cap on the container, and seal it to avoid moisture absorption.
•
Do not spill the refrigerant oil on the vehicle; it may damage the paint; if the refrigerant oil contacts the paint, wash it off immediately.
•
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.

    Repair procedures Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the heater and blower assembly.

    Description and operation Description The PTC (Positive Temperature Coefficient) heater is installed at the exit or the backside of the heater core.

    Other information:

    Hyundai Palisade (LX2) 2020-2026 Service Manual: In-car Sensor

    Description and operation Description The In-car air temperature sensor is built in the heater & A/C control unit. The sensor consists of a thermistor that measures the inside temperature. The signal decided by the resistance value that changes in accordance with perceived inside temperature, is delivered to heater co

    Hyundai Palisade (LX2) 2020-2026 Service Manual: Components and components location

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