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) 2022-2026 Service Manual: Description and Operation
- Description of ESP
Electronic Stability Control (ESC) recognizes critical driving
conditions, such as panic reactions in dangerous situations, and
stabilizes the vehicle by individual wheel braking and engine control
input.ESC adds an additional function known as Active Yaw Control (AYC) ...
Hyundai Tucson (NX4) 2022-2026 Service Manual: Repair procedures
- Replacement
• Put on gloves to prevent hand injuries.
• Use seat covers to avoid damaging any surfaces.
1.Remove the front pillar trim.(Refer to Interior Trim - "Front Pillar Trim")
2.Remove the inside rear view mirror assembly.(Refer to Mirror ...