Mercedes-Benz CLA-Class 2014 COMAND Manual - Manual (Page 123)

Problem Possible causes/consequences and M M Solutions
The Navigation Navigation
Unavailable Unavailable message
appears.
COMAND has an integrated hard drive on which the digital map is
stored.
To protect the integrated hard drive against damage, COMAND
deactivates it at very high and low 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. This may occur when
calculating a route, for example.
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 drive once more. The message
will then reappear.
X Consult an authorized Mercedes-Benz Center.
Problem Possible causes/consequences and M M Solutions
You see a message
informing you that the
DVD containing the dig-
ital map is incompatible
with the system soft-
ware.
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 database checked at an authorized Mercedes-
Benz Center.
Problem Possible causes/consequences and M M Solutions
The map software
update has failed.
The DVD is dirty.
X Clean the DVD.
X Restart the update.
The DVD is scratched.
X Consult an authorized Mercedes-Benz Center.
There is overheating due to excessive temperatures in the vehicle
interior.
X Wait until the vehicle interior has cooled down.
X Restart the update.
COMAND's integrated hard disk is defective.
X
Consult an authorized Mercedes-Benz Center.
Problems with the navigation system
121
Navigation
Z