the newer nissan transponders are easy to program. if your cars 2000+ you do this

1. get in the car with the master key and transponder

2. make sure all the doors are closed, lock yourself in using the driver's master door lock switch.

3. take the key and basically fuck the lock cylinder with the key all the way in and all the way out at least 6 times within 10 seconds, the hazard lights will flash indicating you're ready.

4. once the hazard lights flash, put the key in to the accessory position then press any button on the key fob, i press unlock and it should unlock the doors

5. take the key out, get out of the car, and click your transponder, congratulations

.