
This warning light illuminates:
If the LED headlight warning light remains illuminated while driving, have the vehicle inspected by an authorized HYUNDAI dealer.
This warning light blinks:
Whenever there is a malfunction with a LED headlight related part.
If this occurs, have the vehicle inspected by an authorized HYUNDAI dealer.
Information
Driving with the LED Headlight warning light on or blinking may reduce LED headlight life.
 4 Wheel Drive (AWD) warning 
light. 4 Wheel Drive (AWD) LOCK 
indicator light
4 Wheel Drive (AWD) warning 
light. 4 Wheel Drive (AWD) LOCK 
indicator light Icy road warning light
Icy road warning lightHyundai Tucson (NX4) 2022-2025 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) ...
   
Hyundai Tucson (NX4) 2022-2025 Service Manual: Smart Key Unit
    - Components (1)
 Integrated Body Control Unit (IBU)
Connector Pin Information
NoConnector AConnector BConnector CConnector D
1Speed_input-ECU groundBlower motor operate_output
2-Rear washer switch_outputpower ground-
3Front washer switch_inputESCL (+)_outputBattery (+) ECU-
4PDW-R power_ ...