Key Fob Problem
 

I have two key fobs for my 2013 370Z Touring model and one will not unlock or lock the doors. It will start the car and I have tried a new battery. Is there anything I can do to make it work for the doors. Does it need to be reprogrammed? How is that done? Thanks for your help.

I thought I posted this previously. My key fob had failed, so I had to buy a new key fob and take it to a locksmith to get it programmed to my car. $160.00 later, and all is good now.