When you press and hold the red button on the remote, the panic alarm is activated. The body control module actuates the horn relay and light circuits. This function can be turned off with Techstream or by the dealer. I turned mine off because it would sometimes go off when bending down to pick up the newspaper or pull a weed.
fob got jammed in a tight seat, the alarm went off... now the horn doesn't work and when the panic button is pressed... Nothing no horn and no blinking lights, seems like a fuse is blown other than the horn or a relay