How do you program remote entry key for 350z?

To program a remote entry key for a Nissan 350Z, first, insert the key into the ignition and turn it to the "On" position without starting the engine. Within five seconds, press and hold the "Unlock" button on the key fob for about 10 seconds, then press the "Lock" button while still holding the "Unlock" button. Release both buttons, and the doors should lock and unlock, indicating successful programming. Repeat this process for any additional remotes you wish to program.