Programming key of 1998 infiniti I30 t?

To program the key for a 1998 Infiniti I30, you typically need to have both the new key and an existing, working key. Insert the existing key into the ignition and turn it to the "On" position without starting the engine. Then, turn the key back to the "Off" position and remove it, repeating this process several times until the security light blinks. Finally, insert the new key and turn it to the "On" position; the security light should go off, indicating successful programming. Always refer to the vehicle's owner manual or consult a professional for specific instructions.