Navigation47
NavigationIntroduction to navigationIntroductionGeneral information
The current vehicle position is determined by means of the GPS system
(Global Positioning System). Sensors in the vehicle measure distances
driven. The measurements are adapted using the detailed information given
in the navigation data medium ma ps and according to the programmed
traffic management. Where applicable, TMC traffic reports are included in the
calculation of routes ⇒ page 70. The navigation system uses these data to
determine an optimal route to the destination.
The destination is defined by entering an address or a point of interest, e.g.
apetrol station or hotel.
Navigation announcements and visual guidance on the navigation unit and
the instrument panel direct you to your destination ⇒page 63.
Depending on the country, some radio-navigation system functions can no
longer be selected when the vehicle is travelling above a certain speed. This
is not a malfunction, but simply a legal requirement.
Navigation data
In normal circumstances, all the necessary navigation data is already stored
in the navigator. A memory card containing the navigation data can be
obtained from an Authorised Service to update this information ⇒page 48.
Additional Information:•Safety notes
’ ⇒ page 6
•Unit overview ⇒ page 8•Entering a destination ⇒page 52
•Destination memory ⇒page 58•Route guidance ⇒ page 63Note
Dirty or damaged navigation data media may lead to problems when copying
navigation information or even in the navigation itself. Store unused data
media in a suitable container or in the original box to protect them from
mechanical damage, heat, humidity or direct sunlight.Limitations of the navigation functionPossible errors in navigation
If the navigation system is not able to receive data from the GPS satellites
(dense vegetation, underground garage), it is still possible to navigate using
the vehicle sensory analysis.
In areas that are not or only partially digitised on the data medium
(e.g. insufficient definition of one-way streets and road categories), the navi-
gation system will still attempt to provide route guidance.
If navigation data are unavailable or incomplete, the navigation system may
be unable to determine the exact vehicle position. As a result, the navigation
may not be as exact as usual.
Navigation area and age of navigation data
The accuracy of the data (small villages, streets and house numbers)
depends on the respective version for the country.
Roads and streets are subject to constant change (e.g. new roads, changes to
street names and house numbers). After some time, navigation data will no
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Navigation
64changed while route guidance is in progress. The route will then be recalcu-
lated.•Press the unit button in one of the navigation menus.•In the Navigation setup menu , press the function button
⇒ page 63, fig. 63.•Select or deselect an option by ticking or clearing the appropriate
checkbox ⇒page 63, fig. 64 .
Defining route criteria •In the Route options setup menu , press the function button.•Press the desired settings to select them in the pop-up window.
Dynamic route
If dynamic route guidance is activated, TMC traffic reports will be taken into
account in the route calculation ⇒page 70.
Excluding types of route in the calculation
The function buttons , etc. define whether or not these
types of road may be included in the route calculation.
Even when excluded, these types of route will still be included in the route
calculation if no practical alternative route exists. For example, if it is impos-
sible to reach an island without using the ferry. For the calculation of very long
routes, it is not possible to avoid motorways.
Navigation announcementsWhen the route has been calculated, the first announcement is given. Up to
three navigation announcements are given before a turn, e.g. within a town
“Prepare to turn left”, “Turn left after 300 metres” and “Now turn left”.•Press the setting knob ⇒page 8, fig. 1 to hear the last navigation
announcement again.
The distances that are announced depend on the type of road and the speed
at which you are driving. On motorways, the first announcement is given
roughly 2,000 m before an exit.
For example, the following announcements may be heard on multi-lane high-
ways or roads that divide, and at roundabouts: “Take the second exit at the
roundabout!”.
When you arrive at your destination, the following announcement is heard:
“You have reached the destination”.
During dynamic route guidance, you receive information about reported
traffic congestion on the route. If the route is recalculated due to traffic
congestion, you will be advised accordingly ⇒page 70.
Announcement settings.
Navigation announcements are played at the preset volume.
The volume of an announcement can be changed with the volume control
D.
All following announcements will then be made at this volume.
The volume of navigation announcements can be preset or switched off in the
Navigation setup menu ⇒ page 73 or in the volume settings ⇒page 88.
Route criteria
MeaningFastest route to the destination, even if it means driv-
ing further.This function aims to find an equilibrium between the
shortest time and the shortest route.Shortest route to the destination, even if it results in a
longer travelling time. The navigation route may
include unusual route sections, e.g. dirt roads.
SETUP
Route optionsRoute criteria
FastEconomicalShort
˜Avoid motorways
A10
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