Hi, Vorda; This sounds like a security system problem. If your remote won't lock/unlock the system, try using the key to lock, then unlock the driver's door. Is there any damage visible to the wiring near the steering column? Also, look under the hood for any wiring tampering.
I have a 2004 Chrysler Neon. As it was broken into, it won't start with the key, only via remote starter. So my battery was dead,and after putting in a new one, my remote start doesn't work. It won't even unlock or lock the doors. I checked the fuses, played around for a bit. Even removed a ignition lock cylinder and tried to turn the ignition with a screwdriver. Car started and run for a couple seconds. I did it few more times but the car wouldn't stay running. Now it won't even start anymore when I turn ignition. Lights and sounds come on but it's not starting. Wonder what happened there? Thanks