Intake Actuator
Heater & A/C Control Unit (Manual)Hyundai Tucson (NX4) 2022-2026 Owner's Manual: Remote key precautions
The remote key may not work if any of
the following occur:
The key is in the ignition switch.
The maximum operating distance limit
is exceeded (about 32 feet (10 m)).
The remote key battery is weak.
Other vehicles or objects may block
the signals.
The weather is extremely cold.
...
Hyundai Tucson (NX4) 2022-2026 Service Manual: Repair procedures
- Removal
1.Disconnect the negative (-) battery terminal.
2.Remove the heater control unit.(Refer to Heating, Ventilation And Air Conditioning - "Heater Control Unit")
3.Remove the IBU (A) after loosening mounting bolt, nut and screw.
4.Disconnect IBU connectors and then remove the IBU (A) ...