Apologies if this is a stupid question but I can't figure it out. When I bought my 06 Cayman S used, I received 2 keys and one is in significantly better shape than the other. The nicer looking key only worked for the first few days so I switched to the other one. My issue is, even if I swap the battery and chip from the worn key to the nicer key, it still won't work. It won't function or even light up anymore. Any ideas as to why? I don't want to be defeated by a key...