
– 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: Description and Operation
- Description
Emissions Control System consists of three major systems. • The
Crankcase Emission Control System prevents blow-by gas from releasing
into the atmosphere. This system recycles gas back into the intake
manifold (Closed Crankcase Ventilation Type).
• The Evaporative Emiss ...
Hyundai Tucson (NX4) 2022-2026 Owner's Manual: Driver Attention Warning
Operation
Basic function
The Driver Attention Warning informs
you of the "Attention Level" and when to
"Consider taking a break".
Attention level
The driver’s attention level appears on
a scale of 1 to 5. The lower the level, the
sooner you must take a break.
Driver Attention Warning operat ...