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

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


5.Install in the reverse order of removal.
• Refill the cooling system with engine coolant.
• Do not interchange the inlet and outlet heater hoses and install the hose clamps securely.
• Make sure that there is no air leakage.
• Charge the system and test its performance.
Heater Unit
Evaporator CoreHyundai Tucson (NX4) 2022-2025 Owner's Manual: Auto Defogging System
on Models with Automatic
Temperature Control
Auto defogging reduces the likelihood of
fogging up the inside of the windshield
by sensing moisture on the inside of the
windshield.
The auto defogging system operates
when the heater or air conditioning is on.
Information
The Auto Defogging system may not
operate normally, when the ...
Hyundai Tucson (NX4) 2022-2025 Owner's Manual: Remote Smart Parking Assist
Malfunction and Limitations
Remote Smart Parking Assist
malfunction
Remote Smart Parking Assist check
When Remote Smart Parking Assist is
not working properly, the "Check Parking
Assist" warning message may appear
on the infotainment system screen.
If the message appears, stop using
Remote Smart Parking Assist, ...