
– 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: A/C Pressure Transducer
- Description
The A/C Pressure Transducer (APT) converts the pressure value of high
pressure line into voltage value after measuring it. By converted
voltage value, engine ECU controls the cooling fan by operating it high
speed or low speed. Engine ECU stops the operation of the compressor ...
Hyundai Tucson (NX4) 2022-2026 Owner's Manual: Rear Cross-Traffic Collision
Warning Settings
Rear Cross-Traffic Safety
With the ignition switch ON, go to User
Settings > Driver Assistance > Parking
Safety > Rear Cross-Traffic Safety (for
cluster type) or Setup > Vehicle > Driver
Assistance > Parking Safety > Rear
Cross-Traffic Safety (for infotainment
sys ...