Security system won't shut off

I have a 1996 jeep grand cherokee laredo and i can not get the security system to shut off. i have tried to use the key to unlock and relock the doors and it will not disarm. Any ideas?

Hi there i had the same problem on one of my jeeps, what you got to do if the problem is still there as you posted this on the 20th. you need to take out the big 50amp fuse under the hood,start the car and go for a drive for 5, 10 min and the put the fuse back in while the car still runs. that will get rid of the problem and will kind of reset the system.
i worked for me and haven't had the problem since.