Mercedes-Benz MY15 Manual page 57

General Information
Operational Readiness of the
Navigation System after the System
Software Update
Sometimes the installed map software is no
longer compatible following a system
software update by an authorized Mercedes-
Benz Center. In this case, the navigation
system is not operational.
To update map software: Proceed as
X
described in the "Update Process" section
( page 53). Use map software compatible
Y
with the system software.
i
Please note that in this case the update
must run through right to the end. If you
cancel beforehand, the navigation system
will still not be ready for operation.
After start-up or initial start-up, the navigation
system must perform a position finding
operation. As a result, you may have to drive
for some time until precise route guidance
takes place.
GPS Reception
The correct functioning of the navigation
system is also dependent on the GPS
reception. In certain situations, the GPS
reception may be impaired, distorted or even
impossible, e.g. in tunnels, multi-storey car
parks or due to snow on the GPS antenna. If
there is snow on the GPS antenna, you should
remove it. The GPS antenna is at the rear on
the vehicle's roof.
Route Guidance after Vehicle Transport
After vehicle transport (e.g. by ferry, car train
or by towing) COMAND must determine the
vehicle location again.
Position finding takes place automatically
when the vehicle is driven off again, even if
COMAND is switched off. The actual length of
time may vary from case to case.
While the vehicle is determining its position,
route guidance is subject to the following
restrictions:
Navigation announcements, route
R
guidance displays and displayed street
names do not match the actual location.
COMAND does not issue any navigation
R
announcements.
The message Off Mapped Road
R
direction arrow are displayed instead of the
route guidance displays. The arrow
indicates the direction of the destination.
i
Direction arrow accuracy is also
dependent on correct vehicle position
and/or direction.
Once the position finding operation has been
completed, route guidance takes place again
via navigation announcements and route
guidance displays.
Interrupting Journey during Route
Guidance
i
An interruption in the journey means
parking the vehicle and switching off the
vehicle.
The continuation of the journey means
switching the vehicle on again and
continuing to drive.
If you interrupt the journey during route
guidance and continue it later, the following
applies:
If you continue the journey within 2 hours,
R
COMAND automatically continues route
guidance.
If you continue the journey after 2 hours,
R
route guidance is canceled. You will have
to continue the canceled route guidance
again manually ( page 89).
Y
Measurement Units
The measurement units displayed in
navigation mode are identical to those set in
the instrument cluster.
Introduction
and a
Z
55