155 Controls in detail
Control system
Menus, submenus and functions
Menu1Menu2Menu3Menu4Menu5Menu6
Trip computerNavi*AudioTel*ServiceSettings
(page 156)(page 158)(page 158)(page 160)(page 164)(page 165)
Commands/submenus
Standard displayShow route guid-
ance instructions, 
current direction 
traveledSelecting radio 
stationTo take a callCall up vehicle mal-
function, warning and 
system status mes-
sages stored in mem-
ory
1
1The vehicle status message memory menu is only displayed if there is a message stored.
Reset to factory 
settings
Fuel consumption 
statistics since startSelecting satellite 
radio station*Select a phone 
book entryTire Pressure Monitor-
ing System (TPMS) 
(USA only)Instrument cluster 
submenu
Fuel consumption 
statistics since the 
last resetOperating 
CD player* RedialRun Flat Indicator 
(Canada only)
Distance to emptyCall up maintenance 
service display
Digital speed-
ometer or outside 
temperature 
301 Controls in detail
Useful features
Call priority
If other service calls such as a Roadside 
Assistance call or Information call are ac-
tive, an emergency call is still possible. In 
this case, the emergency call will take pri-
ority and override all other active calls.
Remote door unlock
In case you have locked your vehicle unin-
tentionally (e.g. SmartKey inside vehicle), 
and the reserve SmartKey is not handy:
Contact the Mercedes-Benz Response 
Center at 1-800-756-9018 (in the USA) 
or 1-888-923-8367 (in Canada).You will be asked to provide your pass-
word which you provided when you 
completed the subscriber agreement.
or 
Contact the Tele Aid web page via In-
ternet using the ID and password sent 
to you shortly after the completion of 
your acquaintance call.
Then return to your vehicle and pull the 
trunk lid handle for a minimum of 
20 seconds until the SOS button is 
flashing.
The message: 
Call connecting ap-
pears in the multifunction display.
The Response Center will then unlock 
your vehicle with the remote door un-
locking feature.
!If the indicator lamps do not start flashing 
after pressing one of the buttons or remain illu-
minated (in red) at any time, the Tele Aid system 
has detected a fault or the service is not current-
ly activated, and may not initiate a call. Contact 
an authorized Mercedes-Benz Center and have 
the system checked or contact the Response 
Center at 1-800-756-9018 (in the USA) or 
1-888-923-8367 (in Canada) as soon as possi-
ble.
iThe indicator lamp in the respective button 
flashes until the call is concluded. Calls can only 
be terminated by a Response Center or Custom-
er Assistance Center representative except 
Roadside Assistance and Information calls, 
which can also be terminated by using the t 
button on the multifunction steering wheel or the 
respective button for ending a telephone call on 
the audio system or the COMAND* head unit.
!If the indicator lamp continues to flash or 
the system does not terminate the call at all, 
contact the Response Center at 
1-800-756-9018 (in the USA) or 
1-888-923-8367 (in Canada), or Mercedes-Benz 
Customer Assistance at 1-800-FOR-MERCedes 
(1-800-367-6372) in the USA or Customer Ser-
vice at 1-800-387-0100 in Canada.
iWhen a Tele Aid call has been initiated, the 
audio system is muted. The optional cellular 
phone (if installed) switches off. If you must use 
this phone, the vehicle must be parked. Unplug 
the telephone, switch it on and place the call. 
The COMAND* navigation system (if engaged) 
will continue to run. The multifunction display in 
the instrument cluster is available for use, but 
spoken commands are not available.
iThe remote door unlock feature is available 
if the relevant telephone network is available and 
data connection is possible.
The SOS button will flash and the message: 
Call 
connecting
 appears in the multifunction dis-
play to indicate receipt of the door unlock com-
mand.