
– 1st warning: If you open the driver's door after you open and then close the rear passenger and turn the engine off, the system provides warning by showing message on the cluster and giving voice instruction.
– 2nd warning
1)The system detects the indoor movement using the rear occupant alert sensor installed on the head lining when the driver gets off the vehicle and locks all the doors.
2)If any movement inside the vehicle is detected, horn and Hazard Warning Flasher are activated for 25 seconds and the mobile text message is sent.


1. Rear Occupant Alert Sensor
2. Integrated body control unit
3. Cluster (Message pop-up and Voice)
1.Disconnect the negative (-) battery terminal.
2.Remove the cover (A) by using a flat-tip screwdriver.

3.Disconnect the connector (A) and then remove the occupant alert sensor.

1.Install the occupant alert sensor.
2.Connect the negative (-) battery terminal.
Daytime Running Light (DRL)Hyundai Tucson (NX4) 2022-2026 Service Manual: Quarter Garnish
- Replacement
• When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components.
• Put on gloves to prevent hand injuries.
1.Using a screwdriver or remover, remove the quarter garnish (A).
2.To install, r ...
Hyundai Tucson (NX4) 2022-2026 Service Manual: Evaporator Temperature Sensor
- Description
The evaporator temperature sensor will detect the evaporator core
temperature and interrupt compressor relay power in order to prevent
evaporator from freezing by excessive cooling.
- Inspection
1.Turn the ignition switch ON.
2.Turn the A/C swicth ON.
3.Measure resist ...