Is there a special way to arm the alarm in a Sport model(no Tech package)? Is it necessary to hit the lock button twice on the keyfob until you here the audible horn or do you only have to hit it once. I didnt even think there was an alarm and tried by locking the car with the keyless entry and then opening the door by unlocking it from the inside through an opened window. No alarm. The book says there is an audible alarm.