Mercedes-Benz COMAND Operating Instructions Manual page 106

Route guidance
104
The change of direction is performed when the light-color bar on the right drops down to 0 ft
and the current vehicle position symbol has reached the white change-of-direction point.
When the change of direction is completed, the map will appear in full screen mode again.
The image shows an example of route guidance at a highway intersection when driving on a
highway.