01 wrangler sentry key wont work

My 01 jeep wrangler wont start ......even with the sentry key ...I was driving to work when the security key light came on solid i thought for sure the jeep was gonna die but it didnt .....Before i use to get a security key light on when i started the jeep then it went away a few seconds after start.....when the solid light came on while i was driving ..i noticed that after when i would start the jeep i didnt get the security light on right away like i used too before the problems started ....it would come on about thirty secs later...and stay on ...jeep would run..........

then this morning the jeep died after i started it and wouldnt stay running

the only thing that is diifferent is yesterday a had the battery disconnected. i think this may of resetmy system but because the system isnt coming on right away looking for the key it kills the motor .... 

I know this sounds cunfusing but basically is there anyway to trouble shoot or bypass this stupid system????

Thanks