Mercedes-Benz 2013 S-Class Operator's Manual page 198

Navigation
196
Problems with the navigation system
Problem
COMAND is unable to
continue route
guidance after the
journey has been
interrupted.
COMAND is unable to
determine the vehicle's
position.
The Navigation
function
unavailable message
appears.
Possible causes/consequences and M Solutions
Route guidance is canceled if you interrupt the journey for more
than two hours.
"Interrupting the journey" refers to stopping the vehicle and
switching off COMAND. "Continuing route guidance" refers to
switching COMAND back on and driving on.
Continue route guidance (
X
COMAND determines the vehicle's position. Depending on the
driving situation, this may take some time.
Route guidance may be restricted during the determination of
the vehicle's location.
When positioning is complete, route guidance is resumed with
navigation announcements and route guidance displays.
COMAND has to redetermine the position of the vehicle if the
vehicle has been transported (e.g. by ferry, by motorail or after
towing).
Start the vehicle and pull away.
X
COMAND determines the vehicle's position. Depending on the
driving situation, this may take some time.
Route guidance may be restricted during the determination of
the vehicle's location.
When positioning is complete, route guidance is resumed with
navigation announcements and route guidance displays.
COMAND has an integrated hard drive on which the digital map is
stored.
To protect the hard drive from damage, COMAND switches it off
at very high temperatures. The navigation system will then be
temporarily unavailable.
Let the vehicle and COMAND cool down.
X
To hide the message: switch COMAND off and then on again.
X
If an area of the hard disk has a malfunction, COMAND can no
longer access the map data in this area, for example when
calculating a route.
To hide the message: switch COMAND off and then on again.
X
The navigation system will be operational again until it has to
access the faulty area of the hard drive once more. The message
will then reappear.
Consult an authorized Mercedes-Benz Center.
X
page 173).
Y