Ferntree Gully Nissan. I don't think it is as complicated as contacting Japan?? To be honest, I don't know what they did but I assume they just copy the code from the existing key. They had a few problems to begin with but found the remote they had brought in was faulty. Within 24 hours, they got another remote and sorted it out. Now they have done one for me, it should be fairly straight forward for future customers.