After selecting Navigation from main menu, move the knob to the right (where you can select split screen). Here you will see some menu for maps. Scroll down and you will see an option which says Navigation System Version. Select this and you will be shown the maps version/year installed on your car.
Originally Posted by ahloong2
How and where to check the version of the map, and what is the latest map code or 'number' should be? Thanks.