I've been trying to program a key fob to my car for the past couple months now and have had no success. I can get the car into programming mode easily but can't get any remotes to respond to the module. I have purchased a few remotes and also replaced the keyless entry module. Also, I took it to a locksmith last week and they used a brand new remote and could not get it programmed at all. I really want to avoid a Mazda dealer if possible but I don't know if that's possible. Does anyone know by replacing the module, if it needs to be synchronized to my car somehow? The locksmith told me that I probably had a bad receiving antenna and he tried telling me it was either located in the back of the car or somewhere near the floor up front. But I believe the Keyless Module in the ceiling is the complete receiving unit? I've been told that the PJB could be faulty but I haven't had any other electrical issues with the car so I haven't messed with that yet.