I have an extra key fob that i have from my old Infiniti, that i want to program to work on my Z. Who knows how to do that?? the dealer wants $40 just to do this.

 

A little more detail, this one worked for me...

1. Get in the vehicle.

2. Close and lock all doors utilizing the driver's power-door lock/unlock switch.

3. Insert and remove the ignition key more than six times within a 10-second period (at a rate of one insertion/removal cycle per second). Don't rush the process, and be sure the key is completely withdrawn from the ignition-key cylinder each time it's removed.

4. Turn the ignition to the ACC position and press any button on the remote one time. The hazard lights should flash twice, letting you know your mission is a success.

If you were going to program more than one remote, you'd simply unlock and lock the doors once again with the driver's switch and press the one button, one time, on the second remote. The procedure is completed by turning the ignition off, unlocking with the driver's switch, and opening the driver's door.

 

Its not working, after taking the key in and out about 7 times the lights blink and then i turn it into acc and hold a button on the fob, but nothing happens.

 

The door has to be closed and locked.

Don't insert and remove the key too fast.

Here's the page from the Tech Manual.
http://www.courtesyparts.com/Merchan...ntry_Instr.gif