
– 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: Special Service Tools
- Special Service Tools
Tool (Number and Name)IllustrationApplication
RKE Battery Checker(09954-2P100)
Measuring the RKE battery voltage.
...
Hyundai Tucson (NX4) 2022-2026 Service Manual: Description and Operation
- Description
Power liftgate is an electro-mechanical system designed to provide
power opening and closing of the liftgate through the push of a button
of a remote key (fob), console switch, inner switch or an outside handle
switch of the liftgate.The power liftgate will reverse direction o ...