Mercedes-Benz C-Class 2008 COMAND Manual - Manual (Page 116)

115
Navigation
Introduction
An unsuccessful update may be caused by
one of the following:
ț DVD dirty or scratched.
̈ Clean the DVD.
Please refer to the “Notes on DVD
discs” section (
୴ page 112).
̈ Restart the update.
ț Overheating as a result of excessively
high temperatures in the passenger
compartment.
̈ Wait until the passenger compart-
ment has cooled down.
̈ Restart the update.
ț The memory medium (hard drive) inte-
grated into COMAND has a physical de-
fect.
̈ Contact an authorized
Mercedes-Benz Center.
Operational readiness of the navigation
system after the system software up-
date
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
described in the “Update process” sec-
tion (
୴ page 114). Use map software
compatible 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 naviga-
tion system must perform a position find-
ing 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 re-
ception. In certain situations, the GPS re-
ception may be impaired, distorted or even
impossible, e.g. in tunnels, multi-storey
car parks or due to snow on the GPS anten-
na. 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 deter-
mine 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 posi-
tion, route guidance is subject to the fol-
lowing restrictions:
ț Navigation announcements, route
guidance displays and displayed street
names do not match the actual loca-
tion.
General information