1.Connect the DLC cable of diagnostic tool to the data link connector (16 pins) in driver side crash pad lower panel, turn the power on diagnostic tool.

2.Select the 'S/W Management' and 'Car model'.
3.Select the 'Smart Key Unit' and 'Smart Key Code Saving'.

4.Follow the instructions on the screen.

Smart Key Diagnostic
Smart Key UnitHyundai Tucson (NX4) 2022-2026 Service Manual: Compressor oil
- Oil Specification
1.The R-134a or R-1234yf system requires synthetic (PAG) compressor
oil whereas the R-12 system requires mineral compressor oil. The two
oils must never be mixed.
2.Compressor (PAG) oil varies according to compressor model. Be sure to use oil specified for the model of c ...
Hyundai Tucson (NX4) 2022-2026 Owner's Manual: Parking Distance Warning
Settings
Parking Distance Warning Auto On
With the ignition switch ON, go to User
Settings > Driver assistance > Parking
Safety > Parking Distance Warning Auto
On (for cluster type) or Setup > Vehicle
> Driver Assistance > Parking Safety
> Parking Distance Warning Auto On
(f ...