When I click the Lock button on the remote, it locks but the horn doesn't chirp. It will chirp if I hit the "Lock" button a second time quickly enough. I figure that's normal; I had a Mazda 6 that worked the same way. The chirp when I hit "Lock" a second time is slightly longer and louder than the chirp when I turn the ignition off, though.

I'm taking the car to a dealer next week to have it checked over and get some floor mats; I'll ask them about the chirp at the same time.

Actually, here's a question: Aside from the red "Security" light next to the driver's door lock, there is a small black box with a red LED on it under the steering column. The LED is always on. I'm thinking that's probably not a factory-installed device; could that be a 3rd-party security system that the independent dealer installed, or that another dealer might have installed?