That’s a setting in your Alarm box. For most alarms you can change it with sequences that you input from that little red panic button. Just look in your manual to find out how to change it.
For me my Alarm came from Japan or Korea or something. I think they wrote the manual in their language and used a regular program like bablefish at altavista to convert. The English is horrible and hard to understand.
Only thing I could really take from it was the wiring diagram. To get around the auto locking, all I had to do was refrain from connecting the wire attaching to my parking brake. I’ve developed other means for alarming the car when it is in unauthorized movement.