
If the remote key is not working properly, try replacing the battery with a new one.
Battery Type: CR2032
To replace the battery:
1. Insert a slim tool into the slot and gently pry open the cover.
2. Using a screw driver, remove the battery cover.
3. Remove the old battery and insert a new battery. Make sure the battery position is correct.
4. Reinstall the battery cover and key cover in the reverse order of removal.
If you suspect your remote key might have sustained some damage, or you feel your remote 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.
Mechanical key
Smart keyHyundai Kona (OS) 2018-2026 Owners Manual: Ignition switch
To reduce the risk of SERIOUS INJURY or DEATH, take the following precautions:
NEVER allow children or any person who is unfamiliar with the vehicle
to touch the ignition switch or related parts. Unexpected and sudden vehicle
movement can occur.
NEVER reach through the steering wheel for the ...
Hyundai Kona (OS) 2018-2026 Service Manual: Repair procedures
Removal
1.
Turn the ignition switch OFF and disconnect the battery negative (-)
cable.
2.
Turn the steering wheel so that the front wheels can face straight ahead.
3.
Remove the drive airbag module.
...