2011 MERCEDES-BENZ C-CLASS COUPE phone

Problems with child seat recognition
Problem Possible causes/consequences and
M Solutions
The
4 PASSENGER
AIRBAG OFF indicator
lamp on the centre con-
sole is lit. As
pecial Mercedes-Benz child seat with a transponder for auto-
matic child seat recognition has been fitted to the front-passenger
seat. The front-passenger airbag has therefore been disabled as
desired. G
Risk of injury
There is no child seat fitted to the front-passenger seat. Automatic
child seat recognition is malfunctioning.
It is also possible that the 6SRS warning lamp lights up and/
or the 4PASSENGER AIRBAG OFF indicator lamp does not light
up briefly when you switch the ignition on.
X Remove electronic equipment from the front-passenger seat,
e.g.
R
laptop
R mobile phone
R cards with transponders, such as ski passes or access cards
If the 4 PASSENGER AIRBAG OFF indicator lamp is still lit:
X Visit a qualified specialist workshop. Suitable positioning of the child restraint systems
Key to the letters used in the table:
XS
eat which is unsuitable for children in this weight category.
US uitable for child restraint systems in the Universal category that are approved for use in
this weigh tcategory.
UF Suitable for forward-facing child restraint systems that belong to the "Universal" category and are approved for use in this weigh tcategory.
LS uitable for child restraint systems as recommended, see the following table of "Recom-
mended child restraint systems" (Y page 63). Children in the vehicle
61Safety Z

Guide lines
;and =show the approximate
distance to the rear area. Yellow guide
line ;indicates a distance of approximately
1. 0ma nd red guide line =indicates a dis-
tance of approximately 0.25 m. The distances
only apply to objects tha tare at ground level.
Blue guide lines :depict the width required
for the vehicle. They are used to align the
vehicle with the edge of the carriageway, e.g.
the kerb. ATTENTION ASSIST
Important safety notes ATTENTION ASSIST helps you during long,
monotonous journeys such as on motorways
and trunk roads. It is active in the 80 km/h
to 180 km/h range.
If ATTENTION ASSIST detects typical indica-
tors of fatigue or increasing lapses in con-
centration on the part of the driver, it sug-
gests taking a break. G
WARNING
ATTENTION ASSIST is only an aid and may
detect yourt iredness or lapses in concentra-
tion too late or not at all. It is not asubstitute
for a well rested and attentive driver.
Fatigue may cause you to recognise hazard-
ous situations too late, misjudge a situation
or react slower. For this reason, make sure
you feel rested before you begin driving and
during your journey. Always take breaks in
good time and regularly, especially during
long journeys. Otherwise, you may fail to rec-
ognise dangers in time, cause an acciden tand
injure yoursel fand others.
ATTENTIO NASSIST 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 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 sur-
face is uneven or if there are potholes
R if there is a strong sid ewind
R if you have adopted a sporty driving style
with high cornering speeds or high rates of
acceleration
R if you are predominantly driving slower
than 80 km/h or faster than 180 km/h
R if you are currently using COMAND Online
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 display Example: vehicles with automatic transmission
X
Activate ATTENTION ASSIST using the on-
board computer (Y page 222).
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 the nhear an
intermittent warning tonet wice, and the
Attention Assist: Drowsiness detec‐ ted message appears in the multifunction
display.
X If necessary, take a break.
X Press the abutton to confirm th emes-
sage.
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 188
Driving systemsDriving and parking

Outside temperature display
The outside temperature display is in the mul-
tifunction display (Y page 212). G
WARNING
At temperatures just above freezing point, the
street may be icy, especially in wooded areas
or on bridges. If you do not adapt your driving
style to the conditions ,the vehicle could skid.
For this reason, adapt your driving style and
speed to the weather conditions.
Changes in the outside temperature are dis-
played after a short delay. Speedometer with segments
The segments in the speedometer indicate
which speed range is available.
Cruise control (Y page 162) activated:
The segments light up from the stored speed
to the maximum speed.
Variable SPEEDTRONIC (Y page 173) activa-
ted:
The segments light up from the start of the
scale to the selected limit speed.
DISTRONIC PLUS (Y page 164) activated:
One or two segments in the set speed range
light up.
DISTRONIC PLUS detects a vehicle in front:
The segments between the speed of the vehi-
cle in front and the stored speed light up. Operating the on-board computer
Overview The on-board computer is activated as soon
as you turn the key to position 1in the ignition
lock.
You can control the multifunction display and
the settings in the on-board computer using
the buttons on the multifunction steering
wheel. :
Multifunction display
; Switches on LINGUATRONIC; see the sep-
arate operating instructions
= Right control panel
? Left control panel
A Back button
Left control panel =
; R
Calls up the menu and menu bar 9
:
Press briefly:
R
Scrolls through lists
R Selects a submenu or function
R In the Audio menu: selects a
stored station, an audio track or
a video scene
R In the Tel (telephone) menu:
switches to the phone book and
selects a name or telephone
number Displays and operation (12-button multifunction steering wheel)
211On-board computer and displays Z

9
:
Press and hold:
R
In the Audio menu: selects the
previous/next station or selects
an audio track or a video scene
using rapid scrolling
R In the Tel (telephone) menu:
starts rapid scrolling through the
phone book a R
Confirms selection/display mes-
sage
R In the Tel (telephone) menu:
switches to the telephone book
and starts dialling the selected
number
R In the Audio menu: stops the
station search function at the
desired station Right control panel
~ R
Rejects or ends a call
R Exits telephone book/redial
memory 6 R
Makes or accepts a call
R Switches to the redial memory W
X R
Adjusts the volume 8 R
Mute Back button
%
Press briefly:
R
Back
R Switches off LINGUATRONIC
R Hides display messages or calls
up the last Trip menu function
used
R Exits the telephone book/redial
memory %
Press and hold:
R
Calls up the standard display in
the Trip menu
Multifunction display
Values and settings as well as display mes-
sages are shown in the multifunction display. :
Description field
; Menu bar
= Drive program
? Outside temperature or speed
(Ypage 223)
A Transmission position
X To show menu bar ;:press the =
or ; button on the steering wheel.
Vehicles with manual transmission: the
indicators in the lower part of the multifunc-
tion display differ from the display shown
here. 212
Displays and operation (12-button multifunction steering wheel)On-board computer and displays

Menu overview
The number of menus show ndepends on the optional equipment in the vehicle. Function
:
Trip menu (Y
page 215) ;
Navi menu (navigation instructions) (Y
page 216)=
Audio menu (Y
page 217) ?
Tel menu (telephone) (Y
page 219)A
Assist. menu (assistance) (Y
page 220)B
Service menu (Y
page 222)
R calls up display messages ( Ypage 233)
R tyre pressure loss warning (Y page 340)
R Tyre pressure monitor (Y page 342)
R ASSYST PLUS service interval display (Y page 305)C
Settings menu (Y
page 223) D
AMG menu in AMG vehicles (Y
page 229)The
Audio ,
Navi and
Tel menus differ slightly in vehicles with an audio system and vehicles
with COMAND Online. The examples given in this Owner's Manual apply to vehicles equipped
with COMAND Online. 214
Displays and operation (12-button multifunction steering wheel)On-board computer and displays

Telephone menu
Introduction Functions and displays ar
edependen tonthe
optional equipment installed in your vehicle.
You can place your mobile phone in the
mobile phone bracket (Y page 292), or set
up a Bluetooth ®
connection to the audio sys-
tem or COMAND Online (see the separate
operating instructions).
i You can obtain further information about
suitable mobile phones and connecting
mobile phones via Bluetooth ®
:
R in any Mercedes Benz Service Centre
R on the Internet at http://
www.mercedes-benz.com/connect G
WARNING
Observe the legal requirements of the country
in which you are currently driving regarding
the use of mobile phones in the vehicle.
If it is permitted to use mobile phones while
the vehicle is in motion, you should only use
them when the road and traffic conditions
allow.O therwise, you may be distracted from
the traffic conditions, cause an accident and
injure yourself and others.
X Switch on the mobile phone and audio sys-
tem or COMAND Online (see the separate
operating instructions).
X Press the =or; button on the steer-
ing wheel to select the Tel menu.
You will see one of the following display mes-
sages in the multifunctio ndisplay:
R Please enter PIN :t
he mobile phone has
been placed in the mobile phone bracket
and the PIN has not been entered.
X Enter the PIN using the mobile phone, LIN-
GUATRONIC, the audio system or
COMAND Online.
The mobile phone will search for a network. R
Telephone ready or the name of the net-
work 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 acall If someone calls you whe
nyou are in the
Tel menu, a display message appears in the
multifunction display, for example: X
Press the 6button 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 acall X
Press the ~button on the steering
wheel.
If you are not in the Tel menu, you can still
reject or end a call.
Dialling anumber from the phone book If you
rmobile phone is able to receive calls,
you can search for and dial a number from the
phone book in the audio system or COMAND
Online at any time.
X Press the =or; button on the steer-
ing wheel to select the Tel menu.
X Press the 9,:ora button to call
up the phone book.
X Press the 9or: button to select the
desired name.
To start scrolling rapidly ,press and hold the
9 or: button for longer than one Displays and operation (12-button multifunction steering wheel)
219On-board computer and displays Z

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.
X If only one telephone number is stored
for a name: press the6ora button
to start dialling.
or
X If there is more than one number for a
particular name: press the6ora
button to display the numbers.
X Press the 9or: button to select the
number you want to dial.
X Press the 6ora button to start dial-
ling.
or
X If you do not want to make a call: press
the ~ or% button.
Redialling The on-board computer saves the last names
or numbers dialled in the redial memory.
X Press the =or; button on the steer-
ing wheel to select the Tel menu.
X Press the 6button to switch to the
redial memory.
X Press the 9or: button to select the
desired name or number.
X Press the 6ora button to start dial-
ling.
or
X If you do not want to make a call: press
the ~ or% button. Assistance menu
Introduction In the
Assist. menu you can:
R display Speed Limit Assist and activate/
deactivate the message function of Speed
Limit Assist
R show the distance display
R activate/deactivate ESP ®
R activate/deactivate PRE-SAFE ®
Brake
R activate/deactivate ATTENTION ASSIST
R activate/deactivate Blind Spot Assist or
Active Blind Spot Assist
R activate/deactivate Lane Keeping Assist or
Active Lane Keeping Assist
Speed Limit Assist Displaying Speed Limit Assist
In the
Speed Lim. Asst. function, a detec-
ted speed limit is displayed under certain
conditions (Y page 189).
X Press =or; on the steering wheel
to select the Assist. menu.
X Press 9or: to select Speed Lim.
Asst. .
X Press a.
The multifunction display shows Speed
Limit Assist.
Activating/deactivating the Speed Limit
Assist message function
You can set Speed Limit Assist (Y page 189)
to display a detected speed limit automati-
cally for five seconds. Other messages in the
multifunction display will be faded out for this
length of time. 220
Displays and operation (12-button multifunction steering wheel)On-board computer and displays

Display messages Possible causes/consequences and
M Solutions
D
Power
steering mal‐
function See Own‐
er's Manual G
Risk of accident
The powe rsteering assistance is faulty.
You will need to use more force to steer.
Aw arning tone also sounds.
X Chec kwhether you are able to apply the extra force required.
X If you are able to steer safely: carefully drive on to a qualified
specialist workshop.
X If you are unable to steer safely: do not drive on. Contact the
nearest qualified specialist workshop. &
inoperative Bat‐
tery low The on-board voltage is too low. The auxiliary heating has switched
itself off or cannot be switched on (Y page 128).
X Drive for a longer distance.
The battery is being charged. The auxiliary heating is operational
again as soon as the on-board electrical system voltage is suf-
ficient. &
inoperative
Refuel
vehicle The fuel level in the fuel tank is too low. The auxiliary heating can-
not be switched on (Y page 128).
X Refuel at the nearest filling station. &
inoperative See
Owner's Man. The auxiliary heating has a temporary malfunction or is faulty.
X When the vehicle is on alevel surface and the engine has cooled
down, make up to four attempts to switch on the auxiliary heat-
ing, waiting several minutes between each attempt
(Y page 128).
X If the auxiliary heating does not switch on, consult a qualified
specialist workshop. Telephone No
Service Your vehicle is outside the network provider's transmitter/
receiver range.
X
Wait until the mobile phone operational readiness symbol
appears in the multifunction display. ¥
Top
up washer fluid The washer fluid level in the washer fluid reservoir has dropped
below the minimum.
X
Top up the washer fluid (Y page 304). Display messages
269On-board computer and displays Z