
– 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: Smart Key Diagnostic
- Inspection
Self Diagnosis With Scan Tool
It will be able to diagnose defects of SMART KEY system with diagnostic
tool quickly. diagnostic tool can operates actuator forcefully,
input/output value monitoring and self diagnosis.The following three
features will be major problem in SMART KE ...
Hyundai Tucson (NX4) 2022-2026 Service Manual: Fender
Components and Components Location
- Component Location
1. Fender assembly
Repair procedures
- Replacement
• When removing the fender, wrap protective tape around a screwdriver or remover not to damage components
• Put on gloves to prevent hand injuries
1. ...