Is yours built into the dash? How much of a pain is it to update the maps? Mine stays in the suction cup mount on the windshield, but when I update it once a year or so, I can easily bring it into the house and plug it into my computer. It's not linked to my radio at all, so I don't get niceties like lowering the volume, but I don't mind.
I just use a software in the desktop that will tell me if there's any available update, if so i can put it on an SD card and just pop it in the car and that's it, I believe i can do it directly o the unit through wifi but never tried.
