OK -- this is probably a really stupid question -- but, how do I get the radio to be off when I start the car. So I'm driving and I have the radio on. So at some point I turn the radio off. The next time I start the car as soon as the info comes up on the screen the radio comes on. I though the system remembers what the last state of the radio was and when you restart the radio reverts to that state. I looked everywhere in the manuals and I can't find anything about having the radio be off when you start the car.