2005 Saab 9-3 Arc convertible. I replaced ISM 6 months ago with help from SaabCentral, it's been working fine. But now I need a new key fob. Took car to dealer with one original key, but they say my ISM isn't married to VIN, so they can't pair new key fob. Everything I read says ISM isn't married, you can simply replace it, which I did. Dealer won't give me the time of day. Either I pay them to replace ISM, or I buy new CIM & keys which is worse. What can I do?