overheating MERCEDES-BENZ R-Class 2011 W251 Comand Manual

Problem Possible
causes/co nsequences andM Solutions
The
Navigation Unavailable message
appea rs. COMAND
hasanintegrated harddiskonwhich thedigital mapis
stored.
To protect thehard diskfrom damage, COMAND switchesitoff at
very high temperatures. Thenavigation systemwillthen be
temporarily unavailable.
X Let the vehicle andCOMAND cooldown.
X To hide themessage: switchCOMAND offand then onagain. If
an area ofthe hard dischasamalfunction ,COMAND canno
longer access themap data inthis area, forexample when
calculating aroute.
X To hide themessage: switchCOMAND offand then onagain.
The navigation systemwillbeoperational againuntilithas to
access thefaulty areaofthe hard diskonce more. Themessage
will then reappear.
X Consult anauthorized Mercedes-B enzCenter. Problem Possible
causes/co nsequences andM Solutions
You
willsee amessage
informin gyou that the
DVD containing the
digital mapis
incompatible withthe
system software. The
DVD containing thedigital mapcannot beused forthe update.
X To confirm themessage: pressthe9button.
X Ejec tthe DVD .
X Have thesystem software updatedatan authorized Mercedes-
Benz Center. Problem Possible
causes/co nsequences andM Solutions
The
map software
update hasfailed. The
DVD isdirty orscratc hed.
X Clea nthe DVD .
X Restart theupdate. There
isoverheating duetoexcessive temperatures inthe vehicle
interior.
X Wait untilthevehicle interior hascooled down.
X Restart theupdate. COMAND's
integralharddiskisfaulty.
X Consult anauthorized Mercedes-B enzCenter. 92
Problems
withthenavigation systemNavigationsystem