
– 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 Owner's Manual: System Maintenance
Air Conditioning Performance and
Maintenance at Your HYUNDAI
Dealer
If the amount of refrigerant is too low
or too high, the performance of the air
conditioning is reduced. Have the system
be inspected by an authorized HYUNDAI
dealer.
NOTICE
The refrigerant system should only
be ...
Hyundai Tucson (NX4) 2022-2026 Service Manual: Injector
- Description
Based on information from various sensors, the ECM can calculate the
fuel amount to be injected. The fuel injector is a solenoid-operated
valve and the fuel injection amount is controlled by length of injection
time.In order to improve fuel economy, improve engine performance ...