Does anyone know where or how to purchase an updated disk for the nav? Often many roads or neighborhoods I drive in are not on the map and it looks like I am driving into never, never land.

 

They make a new disk approximately every fall. They send you a flyer when a new one is available. They're available from www.zenrin.com The current version is 6.2. The version you have is printed on your disk, eject it from the DVD drive and take a look. I have 6.1, and don't feel the need to upgrade at this time, as it's $185 for a new disc. (A little cheaper when they first come out with a new version and send you the flyer for about a month, though.)

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter