The SRS is virtually maintenance-free and there are no parts you can safely service by yourself. If the SRS airbag warning light does not illuminate when the ignition switch is in the ON position or continuously remains on, have the system immediately inspected by an authorized HYUNDAI dealer.
Any work on the SRS system, such as removing, installing, repairing, or any work on the steering wheel, the front passenger’s panel, front seats, and roof rails should be performed by an authorized HYUNDAI dealer. Improper handling of the SRS system may result in serious personal injury or death.
WARNING
To reduce the risk of serious injury or death:
Hyundai Tucson (NX4) 2022-2025 Owner's Manual: Remote key precautions
The remote key may not work if any of
the following occur:
The key is in the ignition switch.
The maximum operating distance limit
is exceeded (about 32 feet (10 m)).
The remote key battery is weak.
Other vehicles or objects may block
the signals.
The weather is extremely cold.
...
Hyundai Tucson (NX4) 2022-2025 Owner's Manual: Unlocking your vehicle
Button type
To unlock:
1. Have the smart key with you.
2. Press the door handle button or press
the Door Lock button 2 on the smart
key. The chime sounds and hazard
warning lights blink two times. Also,
the side view mirrors unfold if On
door unlock or On driver approach
is selected ...