We have a built in GPS system in our 13RS. We hate it. It's a Tom Tom based system. It uses a SD card, which stores the maps, just like our Garmin does. Has anyone replaced the Tom Tom maps with a...
I have the same problem with my Subaru, a really kludgy nav system. It is hopeless so I just use out Garmin for other than casual stuff. I compared the Garmin with the one in the Subaru and the map source is the same the difference is the algorithms speed or response and additional things like lane assist POI etc.