If you notice something wrong or missing from the new navigation map system (that was rolled out in April 2018 to Model S/X and is installed in Model 3), you can fix it in a few minutes and have it appear on your Tesla nav within a day. For instance, if you want to go to friend's house that is in a brand new subdivision but his house isn't in the nav yet, OR a new Busy Body Fitness just opened up, and you want directions to it, yet the system doesn't know about it yet OR you've got a big property and you notice that the nav doesn't quite really know where you house is exactly, read on... The new Tesla nav is based on Open Street Map, which is like a wikipedia for geomaps. Anyone can get an edit account and make changes. I made a change yesterday to my neighborhood and it showed up in my Tesla today. Go to OpenStreetMap and create an account. I'd recommend spending the 10 minutes or so going through their tutorial, it is fast and worth it. Enjoy!