The smart key may not work if any of the following occur:
If the smart key does not work correctly, open and close the door with the mechanical key. If you have a problem with the smart key, it is recommended that you contact an authorized HYUNDAI dealer.
If the smart key is in close proximity to your mobile phone, the signal could be blocked by your mobile phone’s normal operational signals. This is specifically relevant when the phone is active such as making and receiving calls, text messaging, and/or sending/receiving emails.
Avoid placing the smart key and your mobile phone in the same location and always try to maintain an adequate distance between the two devices.
Information
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. If the keyless entry system is inoperative due to changes or modifications not expressly approved by the party responsible for compliance, it will not be covered by your manufacturer’s vehicle warranty.
NOTICE
Keep the smart key away from electromagnetic materials that blocks electromagnetic waves to the key surface.
NOTICE
Always have the smart key with you when leaving the vehicle. If the smart key is left near the vehicle, the vehicle battery may be discharged.
Hyundai Kona (OS) 2018-2025 Owners Manual: Limitations of the system
The driver must be cautious in the below situations, because the system may not
detect other vehicles or objects in certain circumstances.
When a trailer or carrier is installed.
The vehicle drives in inclement weather such as heavy rain or snow.
The sensor is polluted with rain, snow, mud, etc ...
Hyundai Kona (OS) 2018-2025 Owners Manual: LCD display messages
Shift to P (for smart key system and dual clutch transmission)
This warning message is displayed if you try to turn off the engine without the
shift lever in P (Park) position.
At this time, the Engine Start/Stop button turns to the ACC position (If you
press the Engine Start/Stop button once more ...