If the Smart Key is not working properly, try replacing the battery with a new one.
Battery Type: CR2032
To replace the battery:
1. Remove the mechanical key.
2. Use a slim tool to pry open the rear cover
of the smart key.
3. Remove the old battery and insert the new battery. Make sure
the battery position is correct.
4. Reinstall the rear cover of the smart key.
If you suspect your smart key might have sustained some damage, or you feel your smart key is not working correctly, it is recommended that you contact an authorized HYUNDAI dealer.
Information
An inappropriately disposed battery can be harmful to the environment and human health. Dispose of the battery according to your local law(s) or regulations.
Hyundai Kona (OS) 2018-2024 Service Manual: Rear Seat Back Cover Components and components location
Component Location
1. Rear seat back cover [LH]
2. Rear seat back cover [RH]
...
Hyundai Kona (OS) 2018-2024 Owners Manual: With the central door lock/unlock switch
When pressing the () portion (2)
of the switch, all vehicle doors will lock.
If any door is opened, the doors will not lock even though the lock button
(2) of the central door lock switch is pressed.
If the smart key is in the vehicle and any door is opened, the doors will
not lock even tho ...