I have a 2003 Accord Coupe EX that supposedly comes with factory alarm. But the problem is that it doesn't auto lock the doors if I forget to do so. Besides that, I am not sure how to turn on the alarm. What I did was simply press the lock key on the remote and then press it again so the car honks once. But no matter how I tried, I couldn't set the alarm off except for once when my friend opened the passenger door, that set it off.