Specifications

46
Infotainment
Behaviour of the internal map memory while driving
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After entering the route destination a map section is
copied to an internal memory. The map section
consists of a location radius, a destination radius as
well as a slightly narrower route corridor in
between.
When the vehicle is driving towards the destination,
the location of the vehicle changes. To make
optimum use of internal memory, the position and
size of the location radius are updated continuously
by the system when the navigation CD is loaded.
Likewis, the size of the destination radius as well as
the width of the corridor are updated continuously
in the internal memory. In codedthe event that the
navigation CD is removed, this ensures that the
optimum map section is always stored in the
system memory.
When the navigation CD is removed from the
system, the map content stored at the time of
removal of the CD remains stored in the system
memory. The map content remains stored in the
deactivated system for 72 hours.
This enables one to enter a route from town A to
town B and to navigate between town A to town B
over a lengthy period of time without having to
reload the navigation CD.
If the actual location and the destination are too far
apart when the navigation CD is removed, the
system may request that the navigation CD be
reloaded while navigating to the destination.
The size of the corridor is defined by the size of the
system memory. Due to the different density of the
navigation data in towns and in sparsely populated
areas, it is not possible to specify the size of the
corridor area.
Destination radiusRoute with
corridor
Location radius
Note
When map data is stored in the system, the static current consumption of the system rises
slightly. Map data can only be cleared prematurely by disconnecting the system from the power
supply. Please bear this fact in mind when performing static current measurements on the
vehicle.