2014 MERCEDES-BENZ CLA warning

Driving to the final position
White lane at current steering wheel angle
Parking space marking
XTurn the steering wheel to the center
positionwhile the vehicle is stationary.
Red guide line at a distance of
approximately 10 in (0.25 m) from the
rear of the vehicle
White lane with steering wheel straight
"End of parking space
XBack up carefully until you have reached
the final position.
Red guide lineis then at end of parking
space".The vehicle is almost parallel in
the parking space.
ATTENTION ASSIST
General notes
ATTENTION ASSIST helps you during long,
monotonous journeys, such as on 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.
Important safety notes
ATTENTION ASSIST is only an aid to the
driver. It might not always recognize fatigue
or increasing inattentiveness in time or fail to
recognize them at all. The system is not a
substitute for a well-rested and attentive
driver.
ATTENTION ASSIST assesses your level of
fatigue or lapses in concentration by taking
the following criteria into account:
Ryour personal driving style, e.g. steering
characteristics
Rjourney details, e.g. time of day and length
of journey
The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or
not occur at all:
Rif the road condition is poor, e.g. if the
surface is uneven or if there are potholes
Rif there is a strong side wind
Rif you have adopted a sporty driving style
with high cornering speeds or high rates of
acceleration
Rif you are predominantly driving slower
than 50 mph (80 km/h) or faster than
112 mph (180 km/h)
Rif you are currently using COMAND or
making a telephone call with it
Rif the time has been set incorrectly
Rin active driving situations, such as when
you change lanes or change your speed
Warning and display messages in the
multifunction display
XActivate ATTENTION ASSIST using the on-
board computer (Ypage 204).
If ATTENTION ASSIST is active, you will be
warned no sooner than 20 minutes after
your journey has begun. You then hear an
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intermittent warning tonetwice and the
Attention Assist: Take a Break!
message appears in the multifunction
display.
XIf necessary, take a break.
XPress theorbutton 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, you will be warned again
after 15 minutes at the earliest. The
preconditionfor this is that
ATTENTION ASSIST still detects typical
indicators of fatigue or increasing lapses in
concentration.
ATTENTION ASSIST is reset when you
continue your journey and starts assessing
your tiredness again if:
Ryou switch off the engine.
Ryou take off your seat belt and open the
driver's door, e.g. for a change of drivers or
to take a break.
When ATTENTION ASSIST is deactivated, the
symbol appears in the multifunction
display in the assistance graphic display.
Speed Limit Assist
General notes
Speed Limit Assist shows you detected speed
limits in the multifunction display.Data from
the navigation system is also used for this
purpose. If a traffic sign indicating a speed
limit or the end of a speed limit is detected,
it is shown in the multifunction display. If
Speed Limit Assist does notdetectany traffic
signs, the speed limit from the digital road
map is used and shown in the display.
Speed Limit Assist detects the traffic signs
with a camera attached behind the top of the
windshield.
Speed Limit Assist camera
Important safety notes
Speed Limit Assist is only an aid and does not
always detect traffic signs with information
aboutthe maximum permissible speed.
Traffic signs always have priority over the
Speed Limit Assist display.
The system may be impaired or may not
function if:
Rthere is poor visibility, e.g. due to snow,
rain, fog or spray
Rthere is glare, e.g. from the sun or from
oncoming traffic
Rthe windshield is dirty, fogged up or
covered, for instance by a sticker, in the
vicinity of the camera
Rthe traffic signs are covered, for instance
by dirt, snow or trees
Rthe traffic signs are poorly illuminated
Rthere are ambiguous traffic signs, for
instance near roadworks or on multi-lane
roads
Information in the multifunction display
Briefly showing detected traffic signs in
the multifunction display
XActivate the Speed Limit Assist warning
function using the on-board computer
(Ypage 203).
Atraffic sign indicating a speed limitorthe
end of a speed limit appears in the
multifunction display for around five
seconds as soon as it is detected. Any other
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information in the multifunction display is
hidden for this period.
Speed Limit Assist is available and
switched on
Traffic sign indicatingaspeed limit or the
end of a speed limit (example)
"Own vehicle
Permanently showing detected traffic
signs in the multifunction display
XDisplay the assistance graphic using the
on-board computer (Ypage 203).
Atraffic sign indicating a speed limitorthe
end of a speed limitappears in the
multifunction display as soon as it is
detected.
Traffic sign indicating a speed limitis
generally displayed until:
Ra traffic sign indicating the end of the
speed limit is detected.
Ryou make a turn.
Ryou leave or enter a city.
Rthe road type changes (e.g. freeway,
country road).
Ryou have traveled a certain minimum
distance without the traffic sign being
repeated or detected again.
iYou can also activate Speed Limit Assist
using COMAND. The maximum permissible
speed is shown in the COMAND display;
see the COMAND Operating Instructions.
Lane Tracking package
General notes
The Lane Tracking package consists of Blind
Spot Assist (Ypage 188) and Lane Keeping
Assist (Ypage 190).
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 exteriormirrors draws your
attention to vehicles detected in the
monitored area. If you then switch on the
corresponding turnsignal 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
GWARNING
Blind Spot Assist does not react to:
Rvehicles overtaken too closely on the side,
placing theminthe blind spot area
Rvehicles 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
carefully, 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.
iUSA only:
This device has been approved by the FCC
as a "VehicularRadar 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 notpermitted by the
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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:
Rdirt on the sensors or anything else
covering the sensors
Rthere is poor visibility, e.g. due to fog, heavy
rain or snow
Ra narrow vehicle traveling in front, e.g. a
motorbike or bicycle
Rthe road has very wide lanes
Rthe road has narrow lanes
Ryou are not driving in the middle of the lane
Rthere 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(3.0m)behind your vehicle and directly
nextto 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:
Rwarnings may be issued in error when
driving close to crash barriers or similar
solid lane borders.
Rwarnings 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 vicinityofthe sensors. For
example, the radar sensors must not be
covered 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 specialist workshop. Blind Spot
Assist may otherwise 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.
Yellow indicator lamp/red warning lamp
When Blind Spot Assist is activated, indicator
lampin the exterior mirrors lights up
yellow at speeds of up to 20 mph(30km/h).
At speeds above 20 mph (30 km/h), the
indicator lamp goes out and Blind Spot Assist
is operational.
If a vehicle is detected withinthe monitoring
range of Blind Spot Assist at speeds above
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20 mph (30km/h), then warning lampon
the corresponding side lights up red. This
warning is always emitted whenavehicle
enters the blind spot monitoring range from
behind or from the side.When you overtake
a vehicle, the warning only occurs if the
difference in speed is less than7mph
(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 lampflashes. If
the turn signal remains on, vehicles detected
are indicated by the flashing of red warning
lamp.There are no further warning tones.
Switching on Blind Spot Assist
XMake sure that Blind Spot Assist is
activated in the on-board computer
(Ypage 205).
XTurn the SmartKey to position2in the
ignition lock.
Warning lampsin 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 by means of a camera at
the top of the windshield. Lane Keeping Assist
detects lane markings on the road and warns
you before you leave your lane
unintentionally.
Lane Keeping Assist camera
If you selectkmon the on-board computer in
theDisplay Unit Speed-/Odometer
function (Ypage 206), Lane Keeping Assist
is active starting ataspeed of 60 km/h. If the
milesdisplay unit is selected, the assistance
range begins at 40 mph.
Important safety notes
GWARNING
Lane Keeping Assist may not always clearly
recognize lane markings.
In this case, Lane Keeping Assist may:
Rgive an unnecessary warning
Rnot 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.
GWARNING
The Lane Keeping Assist warning does not
returnthe vehicle to the original lane. There
is a risk of an accident.
You should always steer, brake or accelerate
yourself, in particular if warned by Lane
Keeping 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
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front, for vehicle speed, for braking in good
time and for staying in yourlane.
The Lane Keeping Assist does notkeep the
vehicle in the lane.
The system may be impaired or may not
function if:
Rthere is poor visibility, e.g. due to
insufficient illumination of the road, or due
to snow, rain, fog or spray
Rthere is glare, e.g. from oncoming traffic,
the sun or reflections (e.g. when the road
surface is wet)
Rthe windshield is dirty, fogged up, damaged
or covered, for instance by a sticker, in the
vicinity of the camera
Rthere are no, several or unclear lane
markings for a lane, e.g. in areas with road
construction work
Rthe lane markings are worn away, dark or
covered up, e.g. by dirt or snow
Rthe distance to the vehicle in front is too
small and the lane markings thus cannot be
detected
Rthe lane markings change quickly, e.g.
lanes branch off, cross one another or
merge
Rthe road is narrow and winding
Rthere are strong shadows cast on the lane
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
steering wheel for up to 1.5 seconds.
Switching on Lane Keeping Assist
XSwitch on Active Lane Keeping Assist using
the on-board computer; to do so, select
StandardorAdaptive(Ypage 205).
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lane markings in the assistance
graphics display (Ypage 203) are shown
in green.
WhenStandardis selected, no warning
vibration occurs if:
Ryou switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
Ra driving safety system intervenes, such as
ABS, BAS or ESP®.
WhenAdaptiveis selected, no warning
vibration occurs if:
Ryou switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
Ra driving safety system intervenes, e.g.
ABS, BAS or ESP®.
Ryou accelerate hard, e.g. kickdown.
Ryou brake hard.
Ryou steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly.
Ryou cut the corner on a sharp bend.
In order that you are warned only when
necessary and in good time if you cross the
lane marking, the system recognizes certain
conditions and warns you accordingly.
The warning vibration occurs earlier if:
Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a
freeway.
Rthe system recognizes solid lane markings.
The warning vibration occurs later if:
Rthe road has narrow lanes.
Ryou cut the corner on a bend.
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Useful information............................194
Important safety notes....................194
Displays and operation....................194
Menus and submenus......................197
Display messages.............................212
Warning and indicator lamps in the
instrument cluster............................240
193
On-board computer and displays

Useful information
iThis Operator's Manual describes all
models and all standard and optional
equipment 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.
iRead the information on qualified
specialist workshops: (Ypage 25).
Important safety notes
GWARNING
If you operate information systems and
communication equipment integrated in the
vehicle 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
situationpermits.Ifyou are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the
equipment when the vehicle is stationary.
GWARNING
If the instrument cluster has failed or
malfunctioned, 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
immediately.
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
multifunction display.You should therefore
make sure your vehicle is operating safely at
all times. Otherwise, a vehicle that is not
operating safely may cause an accident.
For an overview, see the instrument panel
illustration (Ypage 29).
Displays and operation
Instrument cluster lighting
The lighting in the instrument cluster, in the
displays and the controls in the vehicle
interior can be adjusted using the brightness
control knob.
The brightness control knob is located on the
bottom left of the instrument cluster
(Ypage 29).
XTurn the brightness control knob clockwise
or counter-clockwise.
If the light switch is set to,or
, the brightness is dependent upon
the brightness of the ambient light.
iThe 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
GWARNING
Opening the hood when the engine is
overheated 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.
!Adisplay message is shown if the coolant
temperature is too high.
194Displays and operation
On-board computer and displays