What does the option button on my automatic car keys do for my 1992 nissan maxima?

I just got a 1992 nissan maxima and there are three buttons. Lock, unlock, and the option button. But i can't seem to figure out what the option button does.|||On most car keys if there are more than 2 buttons the 3rd one is usually an auxillery button. If you bought the car and the button you press doesn't open or turn on or start anything than, more than likely the option button has not been programmed to anything. It can be programmed to open the trunk, start the car, roll the windows up if you have power windows. If there is no panic button it might be that. The panic button is for when your in danger just push hold the button for 3-5 secs and the alarm or horn starts beeping. If not, I would go to your local nissan dealer and inquire about it.





I hope this helps you out a little bit.|||It can be programmed to unlock the truck, turn the interior light on if not all ready programmed for that. It can be programmed to open the garage door open if you have a opener. It could be programmed for a remote start if you have that installed