I just noticed this morning when I locked the doors on my SRT6 that I didn't hear the chirping sound from the alarm that I usually do. I had replaced the original siren for the same reason with the new updated version in May 2016. I checked the fuse it was OK, dome light and trunk light still worked. I tried the panic button on both fobs, one was a new, never used fob, and then did the lock the doors with the window open and then open the door with the inside door release test, still no alarm. I guess batteries are pooched again I was hoping to get 10 years out of it, but no luck. I'm going to remove the siren, split the case and check to see if the condition of the board, if it's not corroded, I'll change out the batteries. I got lucky doing this previously with the siren on my Limited. If the siren can't be repaired, then I'll go without, I still have the piezo buzzer I put in years ago and it still works when locking/unlocking the doors.