I am stationed in Hawaii ad 3 days ago bought my dodge dart limited. when I bought it I got all the upgraded features on the inside to include the navigation so I was told and assumed. Bad idea, I should have checked before leaving because I got home to find out I didn't have the nav button on the screen. So I went back to the dealer to findout what happened and apparently in Hawaii the navigation doesn't work because it runs through Sirius? anyways they are ordering me the unit with the navigation because the had also thought It had it but apparently the dealer removed it or something just a thought though check all your stuff before you leave!!!!! hopefully they will fix this for me whe I take it back to get the part I originally pid for when I bought the car installed for free!!!