[A new ECM with no learning experience is installed.]

WARNING: This page is about a different car, the 2024 Genesis G80. However, it is still accessible from the selected car via links, so may be relevant.

Perform "Key Teaching" procedure with diagnostic tool.
(Refer to Body Electrical System - "IMMOBILIZER SYSTEM ")

Using the key or start button and turn it to the IGN ON and OFF position. Then the ECM learns the smart key information automatically.

(Refer to Body Electrical System - "SMART KEY ")