Select a detour in the navigation system*
Press the symbol for Detour to show an alternative route with information about its longest/shortest route as well as calculated journey time. Normally only a short detour is proposed which quickly rejoins the original itinerary.
An alternative to the Detour function is to diverge from the itinerary's route - the system then updates the route automatically and continues guidance to the destination along the most suitable route.
It is also possible to show an alternative route while driving continues.