Can anyone help me with bringing up the secret screen of the navi system that I've read about in a number of the posts. I read and actually watched some the posts and videos showing a number of combinations, but none seem to work with my system. I ran across these posts while reading about battery voltage from the alternator. As mentioned, I've had my 430 nearly a year now, and plan to do as much maintenance as possible. Being able to bring up this screen may come in hand when I need to change out the alternator. I'm still using the 2001 version 1 dvd. Plan to switch up to a gen 4 soon though.