2014 MERCEDES-BENZ CLA-Class warning

Information in the multifunction display
Briefly showing detected traffic signs in
the multifunction display
X Activate the Speed Limit Assist warning
function using the on-board computer
(Y page 205).
A traffic sign indicating a speed limit or the
end of a speed limit appears in the multi-
function display for around five seconds as soon as it is detected. Any other informa-
tion in the multifunction display is hidden
for this period. 0043
Maximum permissible speed (example)
0044 Maximum permissible speed for vehicles
subject to the restriction in the additional
sign (example)
0087 Additional character in fog
0085 Speed Limit Assist is available and
switched on
Permanently showing detected traffic
signs in the multifunction display
X Display the assistance graphic using the
on-board computer (Y page 204).
A traffic sign indicating a speed limit or the
end of a speed limit appears in the multi-
function display as soon as it is detected.
Traffic sign 0043indicating a speed limit is gen-
erally displayed until:
R a traffic sign indicating the end of the speed
limit is detected.
R you make a turn.
R you leave or enter a city. R
the road type changes (e.g. highway, coun-
try road).
R you have traveled a certain minimum dis-
tance without the traffic sign being repea-
ted or detected again. Lane Tracking package
General notes The Lane Tracking package consists of Blind
Spot Assist (Y page 191) and Lane Keeping
Assist (Y page 193).
Blind Spot Assist General notes
Blind Spot Assist uses a radar sensor system
to monitor the areas on both sides of your
vehicle. It supports you from a speed of
approximately 20 mph (30 km/h). A warning
display in the exterior mirrors draws your
attention to vehicles detected in the moni-
tored area. If you then switch on the corre-
sponding turn signal to change lanes, you will also receive a visual and audible collision
warning. For this purpose, Blind Spot Assist
uses sensors in the rear bumper.
Important safety notes G
WARNING
Blind Spot Assist does not react to:
R vehicles overtaken too closely on the side,
placing them in the blind spot area
R vehicles which approach with a large speed
differential and overtake your vehicle
As a result, Blind Spot Assist may not give
warnings in such situations. There is a risk of an accident.
Always observe the traffic conditions care-
fully, and maintain a safe lateral distance.
Blind Spot Assist is only an aid. It may fail to
detect some vehicles and is no substitute for
attentive driving.
i USA only: Driving systems
191Driving and parking Z

This device has been approved by the FCC
as a "Vehicular Radar System". The radar
sensor is intended for use in an automotive radar system only. Removing, tampering
with, or altering the device will void any
warranties, and is not permitted by the
FCC. Do not tamper with, alter, or use in
any non-approved way.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
Monitoring range of the sensors
In particular, the detection of obstacles can
be impaired if:
R dirt on the sensors or anything else cover-
ing the sensors
R there is poor visibility, e.g. due to fog, heavy
rain or snow
R a narrow vehicle traveling in front, e.g. a
motorbike or bicycle
R the road has very wide lanes
R the road has narrow lanes
R you are not driving in the middle of the lane
R there are barriers or similar lane borders
Vehicles in the monitoring range are then not
indicated. Blind Spot Assist monitors the area up to 10 ft
(3.0 m)behind your vehicle and directly next
to your vehicle, as shown in the diagram. For this purpose, Blind Spot Assist uses radar
sensors in the rear bumper.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may
be indicated, especially if the vehicles are not
driving in the middle of their lane. This may be the case if the vehicles are driving on the inner
side of their lane.
Due to the nature of the system:
R warnings may be issued in error when driv-
ing close to crash barriers or similar solid
lane borders.
R warnings may be interrupted when driving
alongside particularly long vehicles, e.g.
trucks, for a prolonged time.
The two sensors for Blind Spot Assist are
integrated into the sides of the rear bumper.
Make sure that the bumper is free of dirt, ice
or slush in the vicinity of the sensors. For
example, the radar sensors must not be cov-
ered by bicycle racks or overhanging loads.
Following a severe impact or in the event of
damage to the bumpers, have the function of
the radar sensors checked at a qualified spe-
cialist workshop. Blind Spot Assist may oth-
erwise not work properly.
Indicator and warning display
Blind Spot Assist is not active at speeds below approximately 20 mph (30 km/h). Vehicles in the monitoring range are then not indicated. 0043
Yellow indicator lamp/red warning lamp
When Blind Spot Assist is activated, indicator
lamp 0043in the exterior mirrors lights up yel-
low at speeds of up to 20 mph (30 km/ h). At 192
Driving systemsDriving and parking

speeds above 20 mph (30 km/h), the indica-
tor lamp goes out and Blind Spot Assist is
operational.
If a vehicle is detected within the monitoring
range of Blind Spot Assist at speeds above
20 mph (30 km/h), then warning lamp 0043on
the corresponding side lights up red. This
warning is always emitted when a vehicle
enters the blind spot monitoring range from
behind or from the side. When you overtake a vehicle, the warning only occurs if the differ-
ence in speed is less than 7 mph (12 km/h).
The yellow indicator lamp goes out if reverse gear is engaged. In this event, Blind Spot
Assist is no longer active.
The brightness of the indicator/warning
lamps is adjusted automatically according to
the ambient light.
Collision warning
If a vehicle is detected in the monitoring range of Blind Spot Assist and you switch on the
corresponding turn signal, a double warning
tone sounds. Red warning lamp 0043flashes. If
the turn signal remains on, vehicles detected
are indicated by the flashing of red warning
lamp 0043. There are no further warning tones.
Switching on Blind Spot Assist X Make sure that Blind Spot Assist is activa-
ted in the on-board computer
(Y page 206).
X Turn the SmartKey to position 2in the igni-
tion lock.
Warning lamps 0043in the exterior mirrors
light up red for approximately 1.5 seconds
and then turn yellow. Lane Keeping Assist General notes
Lane Keeping Assist monitors the area in
front of your vehicle with camera
0043, which is
mounted at the top of the windshield. Active
Lane Keeping Assist detects lane markings on
the road and can warn you before you leave
your lane unintentionally.
This function is available in the range between
40 mph and 120 mph (60 km/h and
200 km/h).
A warning may be given if a front wheel
passes over a lane marking. It will warn you by means of intermittent vibration in the steer-
ing wheel for up to 1.5 seconds.
Important safety notes G
WARNING
Lane Keeping Assist may not always clearly
recognize lane markings.
In this case, Lane Keeping Assist may:
R give an unnecessary warning
R not give a warning
There is a risk of an accident.
Always pay particular attention to the traffic
situation and stay in lane, in particular if
warned by Lane Keeping Assist. G
WARNING
The Lane Keeping Assist warning does not
return the vehicle to the original lane. There is a risk of an accident. Driving systems
193Driving and parking
Z

You should always steer, brake or accelerate
yourself, in particular if warned by Lane Keep- ing Assist.
If you fail to adapt your driving style, Lane
Keeping Assist can neither reduce the risk of
an accident nor override the laws of physics. Lane Keeping Assist cannot take into account
the road, traffic and weather conditions. Lane Keeping Assist is merely an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good
time and for staying in your lane.
The Lane Keeping Assist does not keep the
vehicle in the lane.
The system may be impaired or may not func-
tion if:
R there is poor visibility, e.g. due to insuffi-
cient illumination of the road, or due to
snow, rain, fog or spray
R there is glare, e.g. from oncoming traffic,
the sun or reflections (e.g. when the road
surface is wet)
R the windshield is dirty, fogged up, damaged
or covered, for instance by a sticker, in the
vicinity of the camera
R there are no, several or unclear lane mark-
ings for a lane, e.g. in areas with road con-
struction work
R the lane markings are worn away, dark or
covered up, e.g. by dirt or snow
R the distance to the vehicle in front is too
small and the lane markings thus cannot be
detected
R the lane markings change quickly, e.g.
lanes branch off, cross one another or
merge
R the road is narrow and winding
R there are strong shadows cast on the lane
Switching on Lane Keeping Assist
X Switch on Active Lane Keeping Assist using
the on-board computer; to do so, select
Standard Standard orAdaptive
Adaptive (Ypage 206).
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected, the lane markings in the assistance graph-
ics display (Y
page 204) are shown in
green.
When Standard is selected, no warning vibra-
tion occurs if:
R you switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
R a driving safety system intervenes, such as
ABS, BAS or ESP ®
.
When Adaptive is selected, no warning vibra-
tion occurs if:
R you switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
R a driving safety system intervenes, e.g.
ABS, BAS or ESP ®
.
R you accelerate hard, e.g. kickdown.
R you brake hard.
R you steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly.
R you cut the corner on a sharp bend.
In order that you are warned only when nec-
essary and in good time if you cross the lane marking, the system recognizes certain con-
ditions and warns you accordingly.
The warning vibration occurs earlier if:
R you approach the outer lane marking on a
bend.
R the road has very wide lanes, e.g. a free-
way.
R the system recognizes solid lane markings.
The warning vibration occurs later if:
R the road has narrow lanes.
R you cut the corner on a bend. 194
Driving systemsDriving and parking

Useful information
............................196
Important safety notes ....................196
Displays and operation ....................196
Menus and submenus ......................199
Display messages ............................. 213
Warning and indicator lamps in the instrument cluster ............................243 195On-board computer and displays

Useful information
i This Operator's manual describes all
models and all standard and optional equip- ment of your vehicle available at the time of
publication of the Operator's manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
i Read the information on qualified special-
ist workshops (Y page 26). Important safety notes
G
WARNING
If you operate information systems and com-
munication equipment integrated in the vehi- cle while driving, you will be distracted from
traffic conditions. You could also lose control of the vehicle. There is a risk of an accident.
Only operate the equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary. G
WARNING
If the instrument cluster has failed or mal-
functioned, you may not recognize function
restrictions in systems relevant to safety. The operating safety of your vehicle may be
impaired. There is a risk of an accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop immedi-
ately.
You must observe the legal requirements for
the country in which you are currently driving when operating the on-board computer.
The on-board computer only shows messages
or warnings from certain systems in the mul- tifunction display. You should therefore make
sure your vehicle is operating safely at all times. Otherwise, a vehicle that is not oper-
ating safely may cause an accident.
For an overview, see the instrument panel
illustration (Y
page 31). Displays and operation
Instrument cluster lighting
The lighting in the instrument cluster, in the
displays and the controls in the vehicle inte-
rior can be adjusted using the brightness con-
trol knob.
The brightness control knob is located on the bottom left of the instrument cluster
(Y page 31).
X Turn the brightness control knob clockwise
or counter-clockwise.
If the light switch is set to 0058,0060or
0058, the brightness is dependent upon
the brightness of the ambient light.
i The light sensor in the instrument cluster
automatically controls the brightness of
the multifunction display.
In daylight, the displays in the instrument
cluster are not illuminated. Coolant temperature display
G
WARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
! A display message is shown if the coolant
temperature is too high.
If the coolant temperature is over 248 ‡
(120 †), do not continue driving. The
engine will otherwise be damaged. 196
Displays and operationOn-board computer and displays

audio drives or data carriers support this
function.
If track information is stored on the audio
device or medium, the multifunction display
will show the number and title of the track.
The current track does not appear in audio
AUX mode (Aux iliary audio mode: external
audio source connected).
Video DVD operation DVD changer display (example)
X Switch on the audio system or COMAND
and select video DVD; see the separate
operating instructions.
X Press the 0059or0065 button on the steer-
ing wheel to select the Audio Audiomenu.
X To select the next/previous scene:
briefly press the 0063or0064 button.
X To select a scene from the scene list
(rapid scrolling): press and hold the 0063
or 0064 button until desired scene 0043has
been reached. Telephone menu
Introduction G
WARNING
If you operate information systems and com-
munication equipment integrated in the vehi- cle while driving, you will be distracted from
traffic conditions. You could also lose control of the vehicle. There is a risk of an accident.
Only operate the equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary. When telephoning, you must observe the
legal requirements for the country in which
you are currently driving.
X Switch on your mobile phone and audio
system or COMAND, see the separate
operating instructions.
X Establish a Bluetooth ®
connection to the
audio system or COMAND; see the sepa-
rate operating instructions.
X Press the 0059or0065 button on the steer-
ing wheel to select the Tel
Tel menu.
You will see one of the following display mes- sages in the multifunction display:
R Phone READY Phone READY or the name of the network
provider: the mobile phone has found a
network and is ready to receive.
R Telephone No Service Telephone No Service: there is no net-
work available or the mobile phone is
searching for a network.
Accepting a call Example: incoming call
X Press the 0061button on the steering
wheel to accept an incoming call.
If someone calls you when you are in the Tel Tel
menu, a display message appears in the mul- tifunction display.
You can accept a call even if you are not in the
Tel Tel menu.
Rejecting or ending a call X
Press the 0076button on the steering
wheel.
You can end or reject a call even if you are not
in the Tel
Telmenu. Menus and submenus
203On-board computer and displays Z

X
Press the 0059or0065 button on the steer-
ing wheel to select the DriveAssist DriveAssistmenu.
X Press 0063or0064 to select Assistance Assistance
Graphic
Graphic.
X Press the 0076button.
The multifunction display shows the DIS-
TRONIC PLUS distance display in the assis- tance graphic.
The assistance graphic displays the status of and information from the following driving
systems or driving safety systems:
R DISTRONIC PLUS (Y page 174)
R ATTENTION ASSIST (Y page 189)
R Lane Keeping Assist (Y page 193)
R Speed Limit Assist (Y page 190)
R Distance warning function of COLLISION
PREVENTION ASSIST (Y page 64)
R COLLISION PREVENTION ASSIST PLUS
(Y page 67)
Speed Limit Assist Activating/deactivating the Speed Limit
Assist message function
X Press the 0059or0065 button on the steer-
ing wheel to select the DriveAssist
DriveAssist menu.
X Press the 0063or0064 button to select
Speed Limit Assist Speed Limit Assist.
X Press the 0076button.
The current selection is displayed.
X To activate or deactivate: press0076.
When the Speed Limit Assist message
function is activated, the assistance
graphic shows the 00B8symbol.
If the Speed Limit Assist message function
is activated, a detected speed limit is auto- matically displayed for five seconds. Other
items in the multifunction display are sup-
pressed during this time.
Deactivating/activating ESP ®Observe the "Important safety notes" section
in the description of ESP (Y page 68). G
WARNING
If you deactivate ESP ®
, ESP ®
no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP ®
in the situations descri-
bed in the following.
It may be best to deactivate ESP ®
in the fol-
lowing situations:
R when using snow chains
R in deep snow
R on sand or gravel
Activating/deactivating ESP ®
on AMG vehi-
cles (Y page 69).
For further information about ESP ®
, see
(Y page 67).
X Start the engine.
X Press the 0059or0065 button on the steer-
ing wheel to select the DriveAssist DriveAssistmenu.
X Press the 0063or0064 button to select
ESP
ESP.
X Press the 0076button.
The current selection is displayed.
X To activate/deactivate: press the0076
button again.
ESP ®
is deactivated if the 00BBwarning
lamp in the instrument cluster lights up
continuously when the engine is running.
If the 00E5 warning lamp and the 00BBwarn-
ing lamp are lit continuously, ESP ®
is not
available due to a malfunction.
Observe the information on warning lamps
(Y page 247).
Observe the information on display messages (Y page 214).
Activating/deactivating the distance
warning function X
Press the 0059or0065 button on the steer-
ing wheel to select the DriveAssist DriveAssistmenu.
X Press 0063or0064 to select Distance
Distance
Warning
Warning. Menus and submenus
205On-board computer and displays Z