Ryancall,
That's the way the alarm is designed. If you hit it lightly, it gives you a warning chirp. This is to tell people to back off and stop hitting your ride. If you bump it hard enough, the alarm goes off. That's what your alarm is supposed to do.
No you can't roll down the windows with the remote. You can always go to the DEI site and check if there is an add-on to your alarm that will do that, but I seriously doubt it.
If your ride is getting knocked hard enough for the alarm to go off, and it happens enough for you to ask your question about the alarm going off, I'd say you have problems more important than your alarm. Get who ever is hitting you car to stop it! :lmao:
Peace.