If you are considering downloading a "Map Disk Software" file from the internet, be aware of the following dangers:

Use Google Maps, Waze, or Apple Maps on your smartphone with a dashboard mount. These are infinitely more up-to-date than any 2015–2020 Toyota map.

For Lexus owners, the Lexus Driver’s portal (drivers.lexus.com) sometimes provides digital downloads of map data, but again, for the ND series (NDDN), physical media was the norm. Check your VIN to see if any digital option exists.