When I try to go to hot functions under the immu/key menu, I get "Function is not supported by the ECU" Under the NATS menu, it initiates communication and I can read and it says it has cleared error codes, but I can't get to the key programming menu. I have tried replacing the immobilizer module and ECU with scrapyard replacements but still get the same result except I also get code P1615, unrecognized key, as I would expect. Is there anything else I need to do to get to the key register menu?