I like the way you can lock the Prius by pushing the button on the door. However, there have been some occasions where I push the button, and I get a long beep. It doesn't lock the car. Usually, when it does lock it, it gives me a short beep.

Anyone run into this problem? Why will it sometimes lock, and sometimes not lock.. When it does not lock, I have to lock it with my key fob, but that's not as cool.

You know, one big reason for the Prius is the coolness ....