have only had my STi for a few weeks and want to test the alarm system to see if it is working correcly. What the best way to test to see if the alarm is working as it should be?

 

set the alarm and leave ya window down, once set put ur arm in the car.

 

you could try winding down a window lock it with the fob and stick your arm in see if the ultrasonicks pick u up or try jacking it up with the alarm on i may be wrong but i think they have a tilt sensor im sure ill be corrected

 

throw a brick through the window

 

with the car locked and alarm set open the car using the keys.

 

Yeah worked a treat, just left the window open then 5 mins later the alarm went off. Cheers guys

 

If its a standard alarm, you can turn the interior sensors off, temporarily.
While igntion is on, press the key fob, then turn igntion off. When you lock the car, the indicators will flash more than normal.
Good idea if you are leaving a pet in the car, or windows open for airing. The alarm will still work if the doors are opened.