Security system on 3002 Lincoln ls

If the ignition key is coded to the ignition and it starts the car, all you need is a locksmith to make a key for the door and you can buy a correct fob for your vehicle and program it yourself by using your ignition key.

Ok well I cant start it do to my security system so I need to disable my security system.

Ah, you can't disable the system easily yourself. I would suggest you have the transponder key programmed to the vehicle. What started all the issues?

Parked for a very long time now it doesn't start

It was suggested that to unhook the battery cables and hold together for 1 minute then use the fob to lock and then unlock the doors. Then use the keys to lock / unlock the doors, then place key in ignition turn to run for 1 minute, and start the car. If it doesn't start they say its the battery in the key itself.