If the Smart Key does not operate normally, you can lock or unlock the door by using the mechanical key.

Move the release lever in the direction of the arrow (1) and then remove the mechanical key (2). Insert the mechanical key into the key hole on the door.
To reinstall the mechanical key, put the key into the hole and push it until a click sound is heard.
Start-up
Loss of a smart keyHyundai Kona (OS) 2018-2026 Owners Manual: Blind-spot collision warning (BCW) system
[A] : Blind spot area [B] : Closing at high speed
The Blind-spot Collision Warning (BCW) system uses radar sensors in the rear
bumper to monitor and warn the driver of an approaching vehicle in the driver's
blind spot area.
The system monitors the rear area of the vehicle and provides information ...
Hyundai Kona (OS) 2018-2026 Service Manual: Components and components location
Components Location
1. Head Up Display (HUD)
2. Light sensor
3. Cluster
4. Rheostat switch
5. Head Up Display switch
...