Here comes the user working experience on programming the Xhorse universal smart key on the Hyundai/Kia 8A chip type smart key system:
For example, it’s a 2023 Kia Picanto.
Some users had issue programming A LOT of xhorse Kia/Hyundai remotes. Removing the battery made a difference because I’ve never removed the battery before until yesterday when I checked feedback and saw a suggestion about it.
Take the battery out of the remote before putting it on the start button.
Removing battery when programming. It works 100%.