How do you program nats remote key fob on a Nissan Navara D21?

To program a NATS remote key fob for a Nissan Navara D21, first, ensure you have all existing keys and the new fob. Insert the key into the ignition and turn it to the "On" position without starting the engine. Within 5 seconds, press the "Lock" button on the new fob; you should hear a confirmation sound from the vehicle. Repeat this step for each additional fob you wish to program, then turn off the ignition to complete the process.