Tell me about car alarms. Yes, i just bought a new car (Subaru BRZ), and the dealer talked me into a Karr Security system. It is not installed yet, so tell me what you know I could probably get out of it. It was the only thing I succumbed to at the dealer. I am second guessing it. The car is the premium model, which is the lower of the two. It "supposedly" does not have an alarm, but just an engine immobilizer. i found out the cars are shipped with any security system turned off. It needs to be turned on by holding and pressing some buttons on the remote, then you get a flashing icon on the dash when the car is off. The factory disables them before they ship so the alarms don't go off in shipping. Or so I read. I played with the buttons tonight, and lo and behold, there appears to be some semblance of an alarm. I accidentally left a door ajar and there was a weird buzzing, which i noticed at the same time i noticed the alarm icon was flashing. I did not test it, it's kind of late, but when i locked the car up in the garage, the icon that is flashing was definitely NOT flashing the past few days. I will leave a window open tomorrow, lock the car, and reach in and open the door. If it goes off, well, i guess i don't need anything else?