
– 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: Oil Level Sensor
- Removal and Installation
1.Remove the engine room under cover.(Refer to Engine and Transaxle Assembly - "Engine Room Under Cover")
2.Drain the engine oil.(Refer to Lubrication System - "Engine Oil")
3.Disconnect the oil level sensor connector.
4.Remove the oil level sensor (A).Tightening ...
Hyundai Tucson (NX4) 2022-2026 Owner's Manual: Air Cleaner
Filter Replacement
The air cleaner filter can be cleaned for
inspection using compressed air. Do
not attempt to wash or rinse it, because
water can damage the filter. If soiled,
replace the air cleaner filter.
1. Pull up the air cleaner filter cover 1.
2. Pull down the lever to the ...