Despite the many Nissan models, one set of instructions programs the smart key for almost every model and model year. Entering the programming mode deletes the car computer’s memory of all prior authorizations, so you’ll have to program all your remotes as a set in a single session.
Close all doors and lock them using the driver’s door control panel.
Insert the ignition key, but don’t turn it. Take it back out.
Repeat Step 2 five more times, all in under 10 seconds. Don’t do it too fast, though. If you did it to the right count and right speed, the car will flash its hazard lights.