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First you have to locate the navigation DVD player itself. The navigation system DVD players are either under the front seats or behind the navigation screen. All you have to do to update the GPS system is remove the old GPS disc and insert the new GPS disc. The NAV system will update itself. About the only thing you may have to do is reset the region the Navigation system shows. Most of the time you dont have to do anything. It will do all the updates itself.
Toyota Navigation Upgrade Discs. The new Toyota navigation update disc contains over 5 million miles of road and millions of points of interest. The 2016 Toyota GPS navigation update discs are now available. Use the tables below to determine which disc fits your Toyota and how to determine if you need to update. This navigation upgrade only updates the maps and the points of interest. I does not add any new features to the Toyota navigation system itself.