Mercedes-Benz 2011 CL-Class Operator's Manual page 179

Problem
Navigation
The
function
unavailable
message
appears.
Problem
You will see a message
informing you that the
DVD containing the
digital map is
incompatible with the
system software.
Problem
Installation of the map
software has failed.
Possible causes/consequences and M Solutions
COMAND has an integrated hard disk on which the digital map is
stored.
To protect the hard disk from damage, COMAND switches it off at
very high temperatures. The navigation system will then be
temporarily unavailable.
X
Let the vehicle and COMAND cool down.
X
To hide the message: switch COMAND off and then on again.
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.
X
To hide the message: switch COMAND off and then on again.
The navigation system will be operational again until it has to
access the faulty area of the hard disk once more. The message
will then reappear.
X
Consult an authorized Mercedes-Benz Center.
Possible causes/consequences and M Solutions
The DVD containing the digital map cannot be used for the update.
X
To confirm the message: press W the COMAND controller.
X
Eject the DVD.
X
Have the system software updated at an authorized Mercedes-
Benz Center.
Possible causes/consequences and M Solutions
The DVD is dirty or scratched.
X
Clean the DVD.
X
Restart the installation.
There is overheating due to excessive temperatures in the vehicle
interior.
X
Wait until the vehicle interior has cooled down.
X
Restart the installation.
COMAND's integral hard disk is faulty.
X
Consult an authorized Mercedes-Benz Center.
Navigation
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