over the navigation announcements gener-
ated by the system.
General notes
Operational readiness of the navigation
system
In vehicles for certain countries, the naviga-
tion system is not operational immediately
after delivery because the map software is
not pre-installed there.
If this is the case, you will see the following
message when you switch to navigation
mode:
The map software must be
installed. Please insert the DVD
containing the map software.
X
To install software: (
Y
page 141).
i
Do not cancel the installation process. If
you cancel the installation process, the
navigation system will not be operational.
GPS reception
Amongst other things, correct functioning of
the navigation system depends on GPS recep-
tion. In certain situations, GPS reception may
be impaired, there may be interference or
there may be no reception at all, e.g. in tun-
nels, in multi-storey car parks or due to snow
on the GPS aerial. Remove any snow from the
GPS aerial. The GPS aerial is on the roof at
the rear.
Route guidance after vehicle transpor-
tation or exiting a multi-storey car park
COMAND has to redetermine the position of
the vehicle if the vehicle has been transpor-
ted, e.g.:
R
by ferry
R
by motorail
R
after towing
COMAND may also have to redetermine the
vehicle's position after exiting a multi-storey
car park.
Positioning takes place automatically even
when COMAND is switched off. The duration
will vary from one situation to another.
Route guidance may be restricted as follows
during vehicle positioning:
R
navigation announcements, route guid-
ance displays and displayed street names
are not consistent with the actual location
of the vehicle.
R
COMAND does not generate navigation
announcements.
R
instead of the route guidance display, you
see the
Street unknown.
display and a
directional arrow. The directional arrow
shows the compass heading to the desti-
nation.
When positioning is complete, route guidance
is resumed with navigation announcements
and route guidance displays.
Interrupting the journey during route
guidance
i
Interrupting the journey means parking
the vehicle and switching off COMAND.
Continuing the journey means switching
COMAND on again and driving on.
The following applies if you interrupt the jour-
ney during route guidance and continue the
journey later on:
R
COMAND resumes route guidance auto-
matically if you continue the journey within
2 hours.
R
Route guidance is cancelled if you continue
the journey after more than 2 hours. It will
be necessary to resume the cancelled
route guidance manually.
Hard disk errors
COMAND has an integrated hard disk on
which the map software is stored.
134
Navigation system* (introduction)
COMAND
* optional
221_AKB; 2; 3, en-GB
bjanott,
Version: 2.11.7.7
2009-02-27T14:56:10+01:00 - Seite 134
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