Your HYUNDAI may be equipped with a smart key that can be used to lock or unlock the doors liftgate, and start the engine.
1 Door lock
2 Door unlock
3 Liftgate Unlock (Manual liftgate)
Liftgate Open/Close (Power liftgate)
4 Panic
5 Forward
6 Backward
7 Remote start
Hyundai Tucson (NX4) 2022-2023 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) 2022-2023 Owner's Manual: Smart Cruise Control disabled
If the front radar is covered or blocked,
its detecting performance is reduced,
and Smart Cruise Control is temporarily
limited or disabled.
The "Smart Cruise Control disabled. Radar
blocked" warning message may appear
on the instrument cluster.
If Smart Cruise Control does not operate ...