I called crutchfield and they told me to call pioneer and to see if it was defective. so i called pioneer troubleshooting and they didnt do jack SH#T. So i called Crutchfield again and they overnighted me one and i installed it and BAMM, I have a working navigation for my D3. Pioneer said that it should work pretty easy. If your having the same problem i was having, this is what you should try and if it doesnt work then take it back and get a new one. If when you first turn the d3 on and it has you somewhere that you dont live at then go to navi menu and to setting and select modify current l