Same as in
Garden's post...i got this from Maxima.org
How to Program OEM Alarm Key Fob Remote
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Couldn't find this anywhere and thought it might be handy to post.
To program the remote(s) follow this procedure
1. Close and lock all doors with power door lock switch on driver's door.
2. Insert and remove the key from the ignition more than 6 times within 10 seconds. The hazard warning lamps (both turn signals) will then flash twice and the original codes will be cleared.
3. Turn ignition key to "ACC" position.
4. Push the "Lock" button on the new remote controller once. At this time, the car learns the new ID code. The hazard warning lamps (both turn signals) will then flash twice.
For additional remotes continue below else go to step 9
5. If you need to activate additional remote controllers, manually unlock the driver's door only then lock again with door lock knob.
6. Push lock button on the additional remote controller once.
7. Hazard warning lamps (both turn signals) will then flash twice and additional remote is programmed.
8. For additional remotes, go back to step 5.
9. Open driver's door to exit programming state when done.
NOTE: Only a maximum of 4 remotes can be programmed to any ONE car.