Sorry to say that, but most factory system are basically a keyless entry device.
Most if not all, do not have an impact sensor that will trigger the system in the attempt of a break-in.
The factory installed security system will in fact keep the transport from starting, but will not protect your personal effects.
Do not become a victim.....!
Have an after market security system installed today!
From the basic alarm system with a starter disable, door locks, trunk release, parking lights and a siren to a state of the art automobile security system with Gps technology, remote starter from anywhere via your cell phone, radar sensors, impact sensors , tilt sensors, even a camera which takes a picture of the interior of the vehicle and sends it to your alarm remote control.