There is another way you can test the alarm. While sitting inside your car and all doors closed, lock the car via the key fob. Wait a few seconds. Then try to open the door. No matter how many times you pull the door handle, the door will stay lock. If you have the alarm, it will sound. If you don't have the alarm, no sound. I know because I have locked my gf in the car via the key fob and when she tried to get out, the alarm went off, hahahahaha.

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