Factory or aftermarket? Either way you will be able to replace the battery. I don't know how the new key fobs look but my fob just needs a tiny flathead to separate the halves. Takes less than a minute to do.
Thanks to all. It's the factory fob. I also have a honda fob that is dead. It is the one with the small screw. Good to know it's probably just a battery change. Have never been faced with this problem before.