One technique that worked for my 2017 was to disconnect the negative cable to the battery in the rear trunk. This causes the system to reboot and brought the GPS back into the neighborhood. Just be careful when detaching the negative cable. Undo the cable at the post of the battery not a few inches away where you will see another connection. That connection can easily break and cause you a lot of issues. So pull the negative cable off of the post and wait about 5 minutes and then reattach. That should do it.