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If your nissan key cutting keyfob doesn't respond your commands, its battery could be dead. This is a straightforward fix that most people can handle themselves.
You can purchase an alternative from a hardware store or your owner's manual that is specific to the model you have and then follow these steps for changing the battery.
Removing the Battery
The key fob in your nissan figaro key model has an internal lithium battery which will eventually lose charge. Fortunately, replacing the battery of your key fob is a simple process which takes just about a minute to complete. First, you'll need to purchase the CR2032 battery. This is a small coin cell battery often found in key fobs and can be found at all convenience stores. You will also need a pair of gloves (latex or non-latex) and small screwdrivers with flat heads to open the fob. Refer to the owner's guide for specific instructions and steps prior to starting.