Hi Sifus! I don't know if my car has any alarm system on it. I have been told (by this site) that my car comes with only the immobiliser...no alarm. Moreover there is no blinking lights on my rear mirror. However, when the car is locked, there's a red light blinking at the dashboard panel, in between gear and panel. There is another tiny red light blinking at the radio panel.Anyway, recently I don't know what happened...the alarm sounded, really loud. Probably I pressed the lock button on the key without closing the back door.However, today I was curious and slightly close the back door and pressed the lock button. Nothing happened. I left the back door opened and surpressed the lock again. Car lock knob went down but no siren.I am confused. How come the last time it sounded so loudly and today, no trace of alarm on the car. Gee...spooky!! Hahaha... Can you guys share some knowledge please. Thanks!