Mazda Genuine Smart Key 3-Button Used in CX-8 - Year: Registered in Reiwa 2 (2020) - Model: 3DA-KG2P The button lights up red when pressed. Battery level is unknown. As I am not a specialist, I cannot provide support for re-setting. Not initialized. Everything shown in the images is included. Please understand that this is a used electrical component and accept no claims and no returns. Thank you very much.