I have a 2013 Kizashi with a Garmin, Kenwood Nav System. I started the car one day and the screen went white with 4 black spots for re calibrating the touch screen. Which I did. Everything but the Nav works. The message "unable to unlock maps" comes up each time the car is started. Major H...

Here's a bit more I just found from the Garmin site: http://www.garmin.com/us/maps/poiloader/custom_poi_sources Custom POI Sources With the help of Garmin's free POI Loader software, you can upload additional, custom points of interest (POI) to your compatible Garmin device*. Below are links to sev...