Alarm will not shut off

Try disconnecting the battery negative cable at the battery for 5 minutes.

CALL YOUR KIA DEALER ASK FOR SERVICE MANAGER BETTER DISCONNECT BATTERY OR IT WILL RUN DEAD

try resetting alarm lower drivers side window and take out keys,disconnect battery and fully charge it , when you reconnect battery alarm will go off ,put key in drivers side door and turn key all the way open and all the locked 3 times then remove key that should reset alarm.

Battery Disconnect or Replacement Problems

You probably need to disarm the system, try locking and unlocking the drivers door with the key if you don't have the remote.

Try closing the doors then hook up jumper cables, let it sit for a couple of minutes with cables hooked up and other vehicle running. Then try to use key to turn off alarm before opening door. Then try to start it.

Do you arm the alarm with your key pod? If so, simply don't arm it. Whatever you do to arm it stop doing. That way at least you can check to see if that is the problem.

If for some reason it automatically arms when you shut your doors, then remove one wire from your alarm. Tape the end of it so it won't hit something and cause a short.

I don't personally believe that is it. Check the battery terminal connectors and make sure there is no corrosion built up on them. Also, make certain they are tight on the battery posts.

Let us know if that does it.

Sirwriter

try to open and close your car trunk

Alarm Module Reset Procedure
NOTE: This information applies to a Vehicle Theft Security System (VTSS) that was armed when the battery was disconnected and reconnected.
When the armed VTSS senses that the battery has been disconnected and reconnected, it enters its power-up mode. In the power-up mode the alarm system remains armed following a battery failure or disconnect. If the VTSS was armed prior to a battery disconnect or failure, the system will have to be actively or passively disarmed following a battery reconnection.
The power-up mode will also apply if the battery goes dead while the system is armed and battery jump-starting is attempted. The engine no-run feature will prevent the engine from starting until the alarm system has been actively or passively disarmed.
Passive disarming of the Vehicle Theft Security System (VTSS) occurs when the vehicle is unlocked using the key to unlock either front door or the lift gate. Active disarming of the VTSS occurs when the vehicle is unlocked by depressing the Unlock button of the Remote Keyless Entry (RKE) transmitter.
Once the alarm has been activated (horn sounding, lights flashing, and the engine no-run feature), either disarming method will deactivate the alarm.
Depressing the Panic button (if equipped) on the RKE transmitter will also disarm the VTSS, but the horn will sound and the lights will flash for about three minutes as part of the Panic feature. The horn and lights can be stopped by pressing any of the RKE transmitter's buttons or driving the vehicle above 15 mph.

How long did it take you to replace the battery? If you did a quick switch, try disconnecting it again and leave for 10-15 minutes. Maybe it will reset? Did you replace the battery before it went completely bad? Is this a stock alarm?