Comand MERCEDES-BENZ C-Class SEDAN 2012 W204 User Guide

You are responsible for safety at all times and
must continue to pay attention to the
immediate surroundings when parking and
maneuvering. This includes the area behind,
in front of, and beside the vehicle. Otherwise
you could endanger yourself and/or others.GWARNING
The rear view camera will not function or will
not fully function if:
R the trunk lid is open
R it is raining or snowing strongly or if it is
foggy
R it is night or if you are parking/
maneuvering your vehicle in a very dark
area
R a very bright white light is affecting the
camera
R the immediate vicinity is illuminated with
fluorescent light (the display of the
COMAND system can flicker)
R temperature changes abruptly, for example
if you drive out of the cold into a heated
garage (condensation on the lens)
R the camera lens is dirty or covered
R the rear of your vehicle is damaged
In this case, have the position and the
setting of the camera checked at a
specialist workshop. Mercedes-Benz
recommends that you consult a Mercedes-
Benz Center for this purpose.
Do not use the rear view camera in these
situations. You could otherwise injure
yourself and other people and/or cause
damage - including damage to your vehicle -
while parking/maneuvering.
Activating the rear view camera
XMake sure that the SmartKey is in position
2 in the ignition lock.XMake sure that the "rear view camera"
function is selected in COMAND (see theseparate operating instructions for
COMAND).XEngage reverse gear.
The area behind the vehicle is shown in the
COMAND display.
ATTENTION ASSIST
Important safety notes
ATTENTION ASSIST helps you during long,
monotonous journeys such as on freeways
and interstate highways. It is active in the
range between 50 mph (80 km/h) and
112 mph (180 km/h).
If ATTENTION ASSIST detects typical
indicators of fatigue or increasing lapses in
concentration on the part of the driver, it
suggests you take a break.
GWARNING
ATTENTION ASSIST is only an aid and may
detect your tiredness or lapses in
concentration too late or not at all. It is not a
substitute for a well-rested and attentive
driver.
Fatigue may cause you to recognize
hazardous situations too late, misjudge a
situation or react more slowly. For this
reason, make sure you feel rested before you
begin driving and during your journey. Make
sure that you take regular breaks in time,
particularly on long journeys. Otherwise, you
may fail to recognize dangers in time, cause
an accident and injure yourself and others.
ATTENTION ASSIST assesses your level of
fatigue or lapses in concentration by taking
the following criteria into account:
R your personal driving style, e.g. steering
characteristics
R driving conditions, e.g. time, driving time
182Driving systemsDriving and parking

The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or
not occur at all:
R if the road condition is poor, e.g. if the
surface is uneven or if there are potholes
R if there is a strong side wind
R if you have adopted a sporty driving style
with high cornering speeds or high rates of
acceleration
R if you predominantly drive at speeds under
50 mph (80 km/h) or over 112 mph
(180 km/h)
R if you are currently using COMAND or
making a telephone call with it
R if the time has been set incorrectly
R in active driving situations, such as when
you change lanes or change your speed
Warning and display messages in the
multifunction displayXActivate ATTENTION ASSIST using the on-
board computer ( Y page 205).
Symbol : appears in the multifunction
display.
If ATTENTION ASSIST is active, you will be
warned no sooner than 20 minutes after your
journey has begun. You will then hear an
intermittent warning tone twice, and the
Attention Assist: Drowsiness
Detected message appears in the
multifunction display.
XIf necessary, take a break.XPress a to confirm the message.
On long journeys, take regular breaks in good
time to allow yourself to rest properly. If you
do not take a break and ATTENTION ASSIST
still detects typical indicators of fatigue or
increasing lapses in concentration, you will be
warned again after 15 minutes at the earliest.
ATTENTION ASSIST is reset when you
continue your journey and starts assessing
your tiredness again if:
R you switch off the engine.
R you take off your seat belt and open the
driver's door, e.g. for a change of drivers or
to take a break.
Lane Tracking package
General notes
The Lane Tracking package consists of Blind
Spot Assist ( Y page 183) and Lane Keeping
Assist ( Y page 185).
Blind Spot Assist
Important safety notes
Blind Spot Assist uses a radar sensor system
to monitor the areas on both sides of your
vehicle. It supports you from speeds of
approximately 20 mph (30 km/h). A warning
display in the exterior mirrors draws your
attention to vehicles detected in the
monitored area. If you then switch on the
corresponding turn signal to change lane, you
will also receive an optical and audible
collision warning. Blind Spot Assist uses
sensors in the rear bumper for monitoring
purposes.
GWARNING
Blind Spot Assist is only an aid designed to
assist driving. It may fail to detect some
vehicles and is no substitute for attentive
driving.
Blind Spot Assist cannot detect road and
traffic conditions. It may fail to detect narrow
vehicles, such as motorcycles or bicycles, or
may only detect them too late.
Monitoring may be affected by dirty sensors,
strong spray or poor visibility caused by snow,
Driving systems183Driving and parkingZ

Menus and submenus
Menu overview
The number of menus shown depends on the optional equipment in the vehicle.
Function:Trip menu ( Y page 199);Navi menu (navigation details) ( Y page 200)=Audio menu ( Y page 201)?Tel menu (telephone) ( Y page 202)ADriveAssist menu (assistance) ( Y page 204)BServ. menu ( Y page 206)
R calls up display messages ( Y page 213)
R tire pressure loss warning system (Canada only) ( Y page 317)
R tire pressure monitor ( Y page 319)
R ASSYST PLUS service interval display ( Y page 282)CSett. menu ( Y page 206)DAMG menu in AMG vehicles ( Y page 210)
The Audio and Tel menus differ slightly in vehicles with an audio system and vehicles with
COMAND. The examples given in this Operator's Manual apply to vehicles equipped with
COMAND.
198Menus and submenusOn-board computer and displays

Resetting values
You can reset the values of the following
functions:
R Trip odometer
R Trip computer "From start"
R Trip computer "From reset"
XPress the = or ; button on the
steering wheel to select the Trip menu.XPress the 9 or : button to select the
function that you wish to reset.XPress a.
Resetting the trip computer "From start" (example)
XPress : to select Yes and press a
to confirm.
Navigation system menu
Displaying navigation instructions
In the Navi menu, the multifunction display
shows navigation instructions. For more
information, see the separate operating
instructions.
XSwitch on COMAND (see the separate
operating instructions).XPress the = or ; button on the
steering wheel to select the Navi menu.Route guidance inactive:Direction of travel;Current road
Route guidance active
No change of direction announced
:Distance to the destination;Distance to the next change of direction=Current road?Symbol for "follow the road's course"
Change of direction announced without a
lane recommendation
:Road into which the change of direction
leads;Distance to change of direction and visual
distance display=Current road?Symbol for change of direction
When a change of direction has been
announced, you will see visual distance
display ; next to the symbol for change of
200Menus and submenusOn-board computer and displays

direction ?. This decreases in size as you
approach the announced change of direction.
Change of direction announced with a
lane recommendation
Lane recommendations are only displayed if
the relevant data is available on the digital
map.:Road into which the change of direction
leads;Distance to change of direction and visual
distance display=Lane recommendation?Symbol for change of direction
On multi-lane roads, lane recommendation
= may be shown for the next change of
direction. Lanes may be added during a
change of direction.
Lane recommendation display (example)
:Uninterrupted lane;New lane during a change of direction
Other status indicators of the
navigation system
R O : you have reached the destination or
an intermediate destination.
R New Route... or Calculating Route : a
new route is being calculated.
R Off Map or Off Mapped Road : the vehicle
position is outside the area of the digital
map (off-map position).
R No Route : no route could be calculated to
the selected destination.
Audio menu
Selecting a radio station
i SIRIUS XM satellite radio acts like a
normal radio.
For more information on satellite radio
operation, see the separate operating
instructions.
You can only change the waveband and store
new stations using the audio system or
COMAND.
XSwitch on the audio system or COMAND
and select Radio (see the separate
operating instructions).XPress the = or ; button on the
steering wheel to select the Audio menu.:Waveband;Station 17XTo select a stored station:
briefly press
the 9 or : button.XTo select a station from the station
list: press and briefly hold the 9
or : button.XTo select a station using station
search 18
: press and briefly hold the 9
or : button.17
If the station has been stored, the memory position will also be displayed.
18 Only if no station list is received.Menus and submenus201On-board computer and displaysZ

Operating audio player or audio media
Audio data from various audio devices or
media can be played, depending on the
equipment installed in the vehicle.
XSwitch on the audio system or COMAND
and select the audio device or medium (see
the separate operating instructions).XPress the = or ; button on the
steering wheel to select the Audio menu.
CD changer display (example)
:Current trackXTo select the next/previous track:
briefly press the 9 or : button.XTo select a track from the track list
(rapid scrolling): press and hold the
9 or : button until the desired track
has been reached.
If you press and hold the 9 or :
button, the rapid scrolling speed is increased.
Not all audio devices or media support this
function.
If track information is stored on the audio
device or medium, the multifunction display
will show the number and name of the track.
The current track does not appear in audio
AUX mode ( Auxiliary audio mode: external
audio source connected).
Video DVD operation
XSwitch on COMAND and select video DVD
(see the separate operating instructions).XPress the = or ; button on the
steering wheel to select the Audio menu.
DVD changer display (example)
:Current sceneXTo select the next or previous scene:
briefly press the 9 or : button.XTo select a scene from the scene list
(rapid scrolling): press and hold the
9 or : button until the desired
scene has been reached.
Telephone menu
Introduction
You can establish a Bluetooth ®
connection to
the audio system or to COMAND (see the
separate operating instructions).
GWARNING
A driver's attention to the road must always
be his/her primary focus when driving. For
your safety and the safety of others, we
recommend that you pull over to a safe
location and stop before placing or taking a
telephone call. If you choose to use the
telephone while driving, please use the hands-
free device and only use the telephone when
weather, road and traffic conditions permit.
Some jurisdictions prohibit the driver from
using a mobile phone while driving a vehicle.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h ), your vehicle is
covering a distance of 44 feet (approximately
14 m) every second.
XSwitch on the mobile phone and audio
system or COMAND (see the separate
operating instructions).XPress the = or ; button on the
steering wheel to select the Tel menu.202Menus and submenusOn-board computer and displays

You will see one of the following display
messages in the multifunction display:
R Telephone Ready or the name of the
network provider: the mobile phone has
found a network and is ready to receive.
R Telephone No Service : no network is
available, or the mobile phone is searching
for a network.
Accepting a call
If someone calls you when you are in the Tel
menu, a display message appears in the
multifunction display, for example:
XPress the 6 button on the steering
wheel to accept an incoming call.
If you are not in the Tel menu, you can still
accept a call.
Rejecting or ending a call
XPress the ~ button on the steering
wheel.
If you are not in the Tel menu, you can still
reject or end a call.
Dialing a number from the phone book
If your mobile phone is able to receive calls,
you can search for and dial a number from the
phone book in the audio system or COMAND
at any time.
XPress the = or ; button on the
steering wheel to select the Tel menu.XPress the 9, : or a button to call
up the phone book.XPress the 9 or : button to select the
desired name.
To start scrolling rapidly, press and hold the
9 or : button for longer than one
second. After a short time, the rapid scroll
speeds up.
Rapid scrolling stops when you release the
button or reach the end of the list.XIf only one telephone number is stored
for a name: press the 6 or a button
to start dialing.
or
XIf there is more than one number for a
particular name: press the 6 or a
button to display the numbers.XPress the 9 or : button to select the
number you want to dial.XPress the 6 or a button to start
dialing.
or
XIf you do not want to make a call: press
the ~ or % button.
Redialing
The on-board computer saves the last names
or numbers dialed in the redial memory.
XPress the = or ; button on the
steering wheel to select the Tel menu.XPress the 6 button to switch to the
redial memory.XPress the 9 or : button to select the
desired name or number.XPress the 6 or a button to start
dialing.
or
XIf you do not want to make a call: press
the ~ or % button.Menus and submenus203On-board computer and displaysZ

XTo open: pull handle : and open glove box
flap ;.XTo close: fold glove box flap ; upwards
until it engages.
The glove box can only be locked and
unlocked using the mechanical key.
XTo lock: insert the mechanical key into the
lock and turn it 90° clockwise to position
2 .XTo unlock: insert the mechanical key into
the lock and turn it 90° counter-clockwise
to position 1.
Eyeglasses compartment
There is a compartment to stow eyeglasses
in the headliner on the driver's side.
XTo open: pull down eyeglasses
compartment : by the handle.
Stowage compartment under the armrest
i Depending on the vehicle's equipment, a
USB connection and an AUX IN connection
or a Media Interface are installed in the
stowage compartment. A Media Interface
is a universal interface for mobile audio
equipment, e.g. for an iPod ®
or MP3 player
(see the separate COMAND operating
instructions).
XTo open: press left-hand button ; or right-
hand button :.
The stowage compartment opens.Stowage areas255Stowing and featuresZ

XWait for a voice connection to the
Mercedes-Benz Customer Assistance
Center.XAfter the emergency call is ended, close
cover :.GWARNING
If you feel in any way in jeopardy when in the
vehicle (e.g. smoke or fire in the vehicle,
vehicle in a dangerous road location), please
do not wait for voice contact after you have
pressed the SOS button. Carefully leave the
vehicle and move to a safe location. The
Mercedes-Benz Customer Assistance Center
will automatically contact local emergency
officials with the vehicle's approximate
location if they receive an automatic SOS
signal and cannot make voice contact with the
vehicle occupants.
Roadside Assistance button
XPress and hold Roadside Assistance
button : for more than two seconds.
This initiates a call to the Mercedes-Benz
Customer Assistance Center. The indicator
lamp in Roadside Assistance button :
flashes while the call is active. The
Connecting Call message appears in the
multifunction display. The audio output is
muted.
If a connection can be established, the Call
Connected message appears in the
multifunction display.
If a cellular phone network is available and
there is sufficient GPS reception, the mbrace
system transmits data to the Mercedes-Benz
Customer Assistance Center, for example:
R current location of the vehicle
R vehicle identification number
i The display of the audio system or
COMAND shows that an mbrace call is
active. During the call, you can change to
the navigation menu by pressing the NAVI
button on COMAND, for example.
Voice output is not available.
A voice connection is established between
the Mercedes-Benz Customer Assistance
Center and the vehicle occupants.XDescribe the type of assistance needed.
The Mercedes-Benz Customer Assistance
Center either sends a qualified Mercedes-
Benz technician or organizes for your vehicle
to be transported to the nearest authorized
Mercedes-Benz Center. You may be charged
for services such as repair work and/or
towing. Further details are available in your
mbrace manual.
i The mbrace system failed to initiate a
Roadside Assistance call if:
R the indicator lamp in Roadside
Assistance button : is flashing
continuously.
R no voice connection to the Mercedes-
Benz Customer Assistance Center was
established.
This may be because the corresponding
mobile phone network is not available.
The Call Failed message appears in the
multifunction display.
XTo end a call: press the ~ button on the
multifunction steering wheel.
or
XPress the corresponding button for ending
a phone call on the audio system or on
COMAND.Features267Stowing and featuresZ

MB Info call buttonXPress and hold MB Info call button : for
more than two seconds.
This initiates a call to the Mercedes-Benz
Customer Assistance Center. The indicator
lamp in MB Info call button : flashes while
the connection is being established. The
Connecting Call message appears in the
multifunction display. The audio output is
muted.
If a connection can be established, the Call
Connected message appears in the
multifunction display.
If a cellular phone network is available and
there is sufficient GPS reception, the mbrace
system transmits data to the Mercedes-Benz
Customer Assistance Center, for example:
R current location of the vehicle
R vehicle identification number
i The display of the audio system or
COMAND shows that an mbrace call is
active. During the call, you can change to
the navigation menu by pressing the NAVI
button on COMAND, for example.
Voice output is not available.
A voice connection is established between
the Mercedes-Benz Customer Assistance
Center and the vehicle occupants. You can
obtain information on how to operate your
vehicle's systems, on the location of the
nearest authorized Mercedes-Benz Center,
and on further products and services offered
by Mercedes-Benz USA.
Further details on the mbrace system can be
found under http://www.mbusa.com 21
.
Log in under "Owners Online".
i The mbrace system failed to initiate an
MB Info call if:
R the indicator lamp in MB Info call
button : is flashing continuously.
R no voice connection to the Mercedes-
Benz Customer Assistance Center was
established.
This may be because the corresponding
mobile phone network is not available.
The Call Failed message appears in the
multifunction display.XTo end a call: press the ~ button on the
multifunction steering wheel.
or
XPress the corresponding button for ending
a phone call on the audio system or on
COMAND.
Call priority
When service calls are active, e.g. Roadside
Assistance or MB Info calls, an emergency
call can still be initiated. In this case, an
emergency call will take priority and override
all other active calls.
The indicator lamp of the respective button
flashes until the call is ended. An emergency
call can only be terminated by the Mercedes-
Benz Customer Assistance Center. All other
calls can be ended by pressing the ~
button on the multifunction steering wheel or
the corresponding button for ending a
telephone call on the audio system or on
COMAND.
i If an mbrace call is initiated, audio output
is muted. The mobile phone is no longer
connected to COMAND. However, if you
want to use your mobile phone, we
21 USA only.268FeaturesStowing and features