2011 MERCEDES-BENZ C-CLASS SALOON lane assist

X
Activate Active Lane Keeping Assist using
the on-board compute r(Ypage 238).
Symbol :appears in the multifunction
display.
If you drive at speeds above 60 km/h and
lane markings are detected, symbol :is
shown in green .Active Lane Keeping Assist
is ready for use.
Trailer towing
If you attach a trailer, make sure that you have
correctly established the electrical connec-
tion. This can be accomplished by checking
the traile rlighting. Towing
atrailer Notes on towing
atrailer
Important safety notes G
WARNING
When reversing the vehicle towards the
trailer, make sure there is nobody between
the trailer and the vehicle.
Couple and uncouple the trailer carefully .If
you do no tcouple the trailer to the towing
vehicle correctly, the trailer could become
detached.
Make sure that the following values are not
exceeded:
R the permissible trailer drawbar noseweight
R the permissible trailer load
R the permissible rear axle load of the towing
vehicle
R the maximum permissible gross vehicle
weight of both the towing vehicle and the
trailer
You will find the applicable permissible val-
ues, which must not be exceeded, in the vehi-
cle documents.
You will find the values approved by the man-
ufacturer on the vehicle identification plates
and those for the towing vehicle in the "Tech-
nical data" section. G
WARNING
If the Check trailer hitch locking mechanism message appears in the multi-
function display while the vehicle is in motion,
pull over immediately and check whether the
ball coupling is correctly engaged. G
WARNING
Always observe the maximum speed permit-
ted in Germany for vehicle/trailer combina-
tions, even in countries where higher speeds
are permitted. This lowers the risk of an acci-
dent. G
WARNING
Never depress the brake pedal continuously
while the vehicle is in motion, e.g. never cause
the brakes to rub by applying constant slight
pedal pressure. This causes the brake system
to overheat, increases the braking distance
and can lead to the brakes failing completely. G
WARNING
On no account should you attempt to draw the
vehicle/trailer combination out by increasing
speed. G
WARNING
If you exceed the maximum noseweight when
using a carrier system on the ball coupling:
R the carrier system may be thrown around.
R the ball coupling and the carrier system
may become detached from the vehicle.
As a result, you may injure others or cause an
accident.
Do not exceed the maximum noseweight.
When driving with a loaded carrier system,
always adjust your driving style to the prevail-
ing road, traffic and weather conditions and
drive particularly carefully.
You can use carrier systems, e.g. bicycle
racks or load-bearing implements on the ball
coupling. The maximum noseweight of 75 kg
applies when using carrier systems on the ball
coupling. Towing
atrailer
215Driving an d parking Z

The following messages can appear in the
multifunction display:
Z Shift recommendation
(Ypage 161)
XjY Parking Guidance (Y page 199)
è Rear window wiper (Y page 130)
_ Adaptive Highbeam Assist
(Ypage 122)
À ATTENTION ASSIST (Y page 203)
¤ ECO start/stop function
(Y page 156)
Ä Speed Limit Assist (Y page 204)
à Lane Keeping Assist
(Ypage 208) or Active Lane Keep-
ing Assist (Y page 212)
HOLD HOLD function (Y
page 193)
Ä PRE-SAFE®
Brake (Y page 78)
120km/h! Maximum permissible speed
exceeded (only for certain coun-
tries)Displays and operation (12-button multifunction steering wheel)
229On-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 204).
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 204)
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. 236
Displays and operation (12-button multifunction steering wheel)On-board computer and displays

Ä
symbol as long as the HOLD function is
not activated (Y page 193).
Vehicles with Parking Guidance: if PARK-
TRONIC is activated and you are driving at a
speed under 35 km/h, the jParking Guid-
ance symbol is shown instead of the Ä
symbol.
Activating/deactivating ATTENTION
ASSIST X
Press =or; on the steering wheel
to select the Assist. menu.
X Press the 9or: button to select
Attention Asst. .
X Press a.
The current selection is displayed.
X To activate/deactivate: pressa
again.
When ATTENTION ASSIST (Y page 203) is
activated, the Àsymbol appears in the
multifunction display when the ignition is on.
Activating/deactivating Blind Spot
Assist You can use the
Blind Spot Asst. function
to activate or deactivate Blind Spot Assist
(Y page 205) or Active Blind Spot Assist
(Y page 209).
X Press =or; on the steering wheel
to select the Assist. menu.
X Press 9or: to select Blind Spot
Asst. .
X Press a.
If the function is activated, the monitored
areas in the multifunction display light up
red.
X To activate/deactivate: pressa
again.
Activating/deactivating Lane Keeping
Assist You can use the
Lane Keep. Asst. function
to activate/deactivate Lane Keeping Assist (Y
page 208) or Active Lane Keeping Assist
(Y page 212).
X Press =or; on the steering wheel
to select the Assist. menu.
X Press 9or: to select Lane Keep.
Asst. .
X Press a.
If the function is activated, the lane marking
symbol in the multifunction display lights
up red.
X To activate/deactivate: pressa
again.
When Lane Keeping Assist or Active Lane
Keeping Assist is activated, the Ãsymbol
appears in the multifunction display when the
ignition is on. Service menu
In the
Service menu you can:
R call up display messages (Y page 248)
R reset the tyre pressure loss warning system
(Y page 362) or check the tyre pressure
electronically (Y page 363)
R call up the service due date (Y page 326) Settings menu
Introduction The
Settings menu can be used for:238
Displays and operation (12-button multifunction steering wheel)On-board computer and displays

Display messages Possible causes/consequences and
M Solutions
Lane Keeping
Assist currently
unavailable See
Owner's Man‐
ual orActive Lane
Keeping Assist cur‐
rently unavailable
See Owner's Manual Lane Keeping Assis
torActive Lane Keeping Assist is deactivated
and temporarily inoperative .Possible causes:
R the windscreen is dirty in the camera's field of vision.
R visibility is impaired due to heavy rain, snow or fog.
R there are no lane markings for a longer period.
R the lane markings are worn, dark or covered, e.g. by dirt or snow.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Apply the parking brake.
X Clean the windscreen.
If the system detects that the camera is fully operational, the dis-
play message disappears.
Lane Keeping Assist or Active Lane Keeping Assist is operational
again. Lane Keeping
Assist inopera‐
tive orActive Lane
Keeping Assist
inoperative Lane Keeping Assist or Active Lane Keeping Assist is faulty.
X
Visit a qualified specialist workshop. Display messages
275On-board computer and displays Z