lane assist MERCEDES-BENZ CLA 2013 Owners Manual

COLLISION PREVENTION ASSIST
PLUS ................................................ 67
Distance warning function ...............65
Electronic Brake-force Distribution ..70
ESP ®
(Electronic Stability Pro-
gram) ......................................... 68, 69
Important safety guidelines .............64
Driving safety systems
ABS (Anti-lock Braking System) .......64
ADAPTIVE BRAKE ............................. 70
Adaptive brake lamps ......................68
BAS (Brake Assist System) ..............64
ETS (Electronic Traction System) .....68
Overview .......................................... 63
Steering assistant STEER CON-
TROL ................................................ 70
Driving system
Active Parking Assist .....................186
Driving systems
ATTENTION ASSIST ........................195
Blind Spot Assist ............................ 197
Cruise control ................................ 168
Display message ............................ 242
Distronic Plus ................................ 173
HOLD function ............................... 181
Lane Keeping Assist ......................199
Lane package ................................ 197
PARKTRONIC ................................. 182
Reversing camera ..........................191
Speed Limit Assist .........................196
SPEEDTRONIC ............................... 171
Driving tips
Aquaplaning ................................... 167
Automatic transmission .................154
Brakes ........................................... 166
DISTRONIC PLUS ........................... 180
Downhill gradient ........................... 166
Driving abroad ............................... 106
Driving in winter ............................. 167
Driving on flooded roads ................167
Driving on wet roads ......................167
General .......................................... 165
Icy road surfaces ........................... 168
Limited braking efficiency on sal-
ted roads ....................................... 167
New brake pads/linings ................167
Running-in tips ............................... 144
Snow chains .................................. 319Symmetrical dipped beam .............106
Towing a trailer .............................. 201
Wet road surface ........................... 166
DVD audio (on-board computer) ...... 215
E
EASY-VARIO-PLUS system Luggage compartment enlarge-
ment .............................................. 271
EBD (electronic brake force distri-
bution) Display message ............................ 229
Function/notes ................................ 70
ECO display
Function/notes ............................. 165
On-board computer .......................212
ECO start/stop function
Automatic engine start ..................149
Automatic engine switch-off ..........148
Deactivating/activating .................149
General information .......................148
Important safety notes ..................147
Introduction ................................... 147
Electrical fuses
see Fuses
Electromagnetic compatibility
Declaration of conformity ................23
Electronic Stability Program
see ESP ®
(Electronic Stability Program)
Emergency key
Unlocking the driver's door ..............83
Emergency key element
Function/notes ................................ 77
Locking vehicle ................................ 84
Emergency release
Driver's door .................................... 83
Emergency spare wheel
General notes ................................ 332
Important safety notes ..................331
Removing ....................................... 332
Technical data ............................... 332
Emergency unlocking
Boot ................................................. 86
Vehicle ............................................. 83
Engine
Display message ............................ 240
ECO start/stop function ................147
Index9

Overview ........................................ 113
Reading lamp ................................. 113
Setting the ambient lighting
brightness (on-board computer) ....222
Interior motion sensor ........................ 72
ISOFIX child seat securing system .... 54
J
Jack Storage location ............................ 297
Using ............................................. 326
Jump starting (engine) ...................... 306
K
Key Changing the battery .......................79
Checking the battery .......................78
Convenience closing feature ............88
Convenience opening feature ..........88
Display message ............................ 254
Door central locking/unlocking .......77
Emergency key element ................... 77
Important safety notes ....................76
Loss ................................................. 80
Modifying the programming .............77
Positions (ignition lock) .................145
Problem (malfunction) .....................80
Starting the engine ........................146
Key positions (ignition lock) ............ 145
Kickdown Driving tips .................................... 155
Manual drive program ....................157
Kneebag ............................................... 44
L
Lamps see Warning and indicator lamps
Lane Keeping Assist
Activating/deactivating .................219
Display message ............................ 244
Function/information ....................199
Lane package ..................................... 197
Lashing eyelets ................................. 272
Licence plate lamp (display mes-
sage) ................................................... 238
Lights
Activating/deactivating the Intel-
ligent Light System ........................221
Activating/deactivating the inte-
rior lighting delayed switch-off .......222
Active light function .......................110
Automatic headlamp mode ............107
Cornering light function .................111
Dipped-beam headlamps ...............107
Display message ............................ 236
Driving abroad ............................... 106
Foglamps ....................................... 108
Foglamps (extended range) ...........111
Hazard warning lamps ...................110
Headlamp flasher ........................... 109
Headlamp range ............................ 108
Light switch ................................... 107
Main-beam headlamps ................... 109
Motorway mode ............................. 111
Parking lamps ................................ 108
Rear foglamp ................................. 108
Setting the ambient lighting
brightness (on-board computer) ....222
Side lamps ..................................... 108
Switching Adaptive Highbeam
Assist on/off ................................. 221
Switching the daytime driving
lights on/off (on-board computer) . 220
Switching the daytime driving
lights on/off (switch) .....................107
Switching the exterior lighting
delayed switch-off on/off (on-
board computer) ............................ 222
Switching the surround lighting
on/off (on-board computer) ..........222
Turn signals ................................... 109
see Interior lighting
see Replacing bulbs
Light sensor (display message) ....... 239
LIM indicator lamp Cruise control ................................ 169
DISTRONIC PLUS ........................... 174
Variable SPEEDTRONIC .................171
Limiting the speed
see SPEEDTRONIC
Loading guidelines ............................ 268
Locking see Central locking 12Index

detected vehicle turns a corner and reveals
an obstacle or stationary vehicle, DISTRONIC
PLUS will not brake for these.
Crossing vehicles
DISTRONIC PLUS may detect vehicles that
are crossing your lane by mistake. Activating
DISTRONIC PLUS at traffic lights with cross-
ing traffic, for example, could cause your vehi-
cle to pull away unintentionally.
HOLD function
Important safety notes
GWARNING
When leaving the vehicle, it can still roll away
despite being braked by the HOLD function if:
R there is a malfunction in the system or in
the voltage supply
R the HOLD function is deactivated by the
accelerator pedal being depressed, e.g. by
a vehicle occupant
R the electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with
R the battery is disconnected
There is a risk of an accident.
Before leaving the vehicle, always deactivate
the HOLD function and secure the vehicle
from rolling away.
! If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes automati-
cally in certain situations. To prevent dam-
age to the vehicle, deactivate DISTRONIC
PLUS and the HOLD function in the follow-
ing or other similar situations:
R when towing the vehicle
R in the car wash
Deactivate the HOLD function ( Y page 182).
General notes
The HOLD function can assist the driver in the
following situations:
R when pulling away, especially on steep
slopes
R when manoeuvring on steep slopes
R when waiting in traffic
The vehicle is kept stationary without the
driver having to depress the brake pedal.
The braking effect is cancelled and the HOLD
function is deactivated when you depress the
accelerator pedal to pull away.
Activation conditions
You can activate the HOLD function if:
R the vehicle is stationary.
R the engine is running or if it has been auto-
matically switched off by the ECO start/
stop function.
R the driver's door is closed or if your seat
belt is fastened.
R the electric parking brake is released.
R the transmission is in position D, R or N on
vehicles with automatic transmission.
R DISTRONIC PLUS is deactivated.
Driving systems181Driving and parkingZ

Problems with PARKTRONICProblemPossible causes/consequences and M SolutionsOnly the red segments
in the PARKTRONIC
warning displays are lit.
You also hear a warning
tone for approximately
two seconds.
PARKTRONIC is then
deactivated and the
indicator lamp on the
PARKTRONIC button
lights up.PARKTRONIC has malfunctioned and has switched off.XIf problems persist, have PARKTRONIC checked at a qualified
specialist workshop.Only the red segments
in the PARKTRONIC
warning displays are lit.
PARKTRONIC is then
deactivated.The PARKTRONIC sensors are dirty or there is interference.XClean the PARKTRONIC sensors ( Y page 291).XSwitch the ignition back on.The problem may be caused by an external source of radio or
ultrasound waves.XSee if PARKTRONIC functions in a different location.Active Parking Assist
General notes
Active Parking Assist is an electronic parking
aid with ultrasound. It measures the road on
both sides of the vehicle. A parking symbol
indicates a suitable parking space. Active
steering intervention can assist you during
manoeuvring and parking. You may also use
PARKTRONIC ( Y page 182).
Important safety notes
Active Parking Assist is only an aid. It is not a
substitute for your attention to the immediate
surroundings. The responsibility for safe
manoeuvring and parking remains with you.
Make sure that no persons, animals or
objects are in the manoeuvring range.
When PARKTRONIC is switched off, Active
Parking Assist is also unavailable.
GWARNING
While parking or pulling out of a parking
space, the vehicle swings out and can drive
onto areas of the oncoming lane. This could
cause you to collide with other road users.
There is a risk of an accident.
Pay attention to other road users. Stop the
vehicle if necessary or cancel the Active Park-
ing Assist parking procedure.
! If unavoidable, you should drive over
obstacles such as kerbs slowly and not at
a sharp angle. Otherwise, you may damage
the wheels or tyres.
Active Parking Assist may also display spaces
not suitable for parking, e.g.:
R parking or stopping prohibitions
R in front of driveways or entrances and exits
R unsuitable surfaces
186Driving systemsDriving and parking

Guide lines
?BumperARed guide line at a distance of approx-
imately 0.25 m from the rear of the vehicleBYellow guide line at a distance of approx-
imately 4.0 m from the rear of the vehicleCVehicle centre axle (marker assistance)DYellow guide line at a distance of approx-
imately 1.0 m from the rear of the vehicle
The lanes and guide lines are only displayed
if you have engaged reverse gear.
The distance specifications only apply to
objects that are at ground level.
Additional displays on vehicles with PARKTRONIC
and COMAND Online
:Front warning display;Additional PARKTRONIC measurement
operational readiness indicator=Rear warning display
Vehicles with PARKTRONIC and COMAND
Online: when PARKTRONIC is operational
( Y page 182), additional operational readi-
ness indicator ; appears in the COMAND
display. If the PARKTRONIC warning displays
are active or light up, warning displays : and
= are also active or light up correspondingly
in the COMAND display.
Reverse parking functionXMake sure that the reversing camera is
activated and the "Reverse parking" func-
tion is selected; see the separate operating
instructions for the audio system/
COMAND Online.
The lane and the guide lines are shown.
Reversing straight into a parking space
without turning the steering wheel
:White lane indicating the route the vehicle
will take with the steering wheel straight;Yellow guide line at a distance of approx-
imately 1.0 m from the rear of the vehicle=Red guide line at a distance of approx-
imately 0.25 m from the rear of the vehicleXWith the help of white lane :, check
whether the vehicle will fit into the parking
space.XUsing the white lane as a guide, carefully
reverse until you reach the end position.
Red guide line = is then at the end of the
parking space. The vehicle is almost paral-
lel in the parking space.
Reverse perpendicular parking with the
steering wheel at an angle
XDrive past the parking space and bring the
vehicle to a standstill.Driving systems193Driving and parkingZ

Rif 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 COMAND
Online
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 218).
The À symbol appears in the assistance
display ( Y page 217).
If ATTENTION ASSIST is active, it will not
warn you until at least 20 minutes after
your journey has begun. You then hear an
intermittent warning tone twice and the
Attention Assist: Take a break!
message appears in the multifunction dis-
play.XIf necessary, take a break.XPress the a button to confirm the mes-
sage.
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. This will only
happen if ATTENTION ASSIST still detects
typical indicators of fatigue or increasing lap-
ses in concentration.
ATTENTION ASSIST is reset and starts
assessing your tiredness again when you con-
tinue your journey 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
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 not detect any traffic
signs, the speed limit from the digital road
map is taken and shown in the display.
Speed Limit Assist detects the traffic signs
with a camera attached behind the top of the
windscreen.
:Speed Limit Assist camera
Important safety notes
Speed Limit Assist is only an aid and does not
always detect traffic signs specifying the
maximum permissible speed. Traffic signs
always have priority over the Speed Limit
Assist display.
The system may be impaired or may not func-
tion if:
R there is poor visibility, e.g. due to snow,
rain, fog or spray
R there is glare, e.g. from the sun or from
oncoming traffic
R the windscreen is dirty, misted up or cov-
ered, for instance by a sticker, in the vicinity
of the camera
R the traffic signs are covered, for instance
by dirt, snow or trees
196Driving systemsDriving and parking

Rthe traffic signs are poorly illuminated
R there 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
( Y page 218).
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.:Speed Limit Assist is available and
switched on;Traffic sign indicating a speed 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 ( Y page 217).
A traffic sign indicating a speed limit or the
end of a speed limit ; appears in the mul-
tifunction display as soon as it is detected.Traffic sign indicating a speed limit ; is
generally 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 town.
R the road type changes (e.g. motorway,
country road).
R you have travelled a certain minimum
distance without the traffic sign being
repeated or detected again.
i You can also activate Speed Limit Assist
using COMAND Online. The maximum per-
missible speed is shown in the COMAND
display; see the COMAND Online operating
instructions.
Lane Tracking package
General notes
The Lane Tracking package consists of Blind
Spot Assist ( Y page 197) and Lane Keeping
Assist ( Y page 199).
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 speeds of
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. For this pur-
pose, Blind Spot Assist uses sensors in the
rear bumper.
Driving systems197Driving and parkingZ

Important safety notesGWARNING
Blind Spot Assist does not react to vehicles:
R overtaken too closely on the side, placing
them in the blind spot area
R when the difference in the speed of
approach and overtaking is too great
As a result, Blind Spot Assist cannot warn
drivers in these situations. There is a risk of
an accident.
Always pay careful attention to the traffic sit-
uation and maintain a safe distance at the side
of the vehicle.
Blind Spot Assist is only an aid. It may fail to
detect some vehicles and is no substitute for
attentive driving.
Monitoring range of the sensors
In particular, the detection of obstacles can
be impaired in the case of:
R dirt on the sensors or the sensors are
obscured
R poor visibility, e.g. due to fog, heavy rain or
snow
R a narrow vehicle travelling in front, e.g. a
motorcycle or a bicycle
R very wide lanes
R narrow lanes
R vehicles not driving in the middle of their
lane
R barriers or other road boundaries
Vehicles in the monitoring range are then not
indicated.
Blind Spot Assist monitors the area up to
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, for
example lorries, 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. The
radar sensors must not be covered, for exam-
ple by cycle racks or overhanging loads. Fol-
lowing a severe impact or in the event of dam-
age to the bumpers, have the function of the
radar sensors checked at a qualified special-
ist workshop. Blind Spot Assist may other-
wise not work properly.
198Driving systemsDriving and parking

Indicator and warning display
Blind Spot Assist is not active at speeds below
approximately 30 km/h. Vehicles in the mon-
itoring range are then not indicated.:Yellow indicator lamp/red warning lamp
If Blind Spot Assist is activated, indicator
lamp : in the exterior mirrors lights up yel-
low up to a speed of 30 km/h. At speeds
above 30 km/h, the indicator 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
30 km/h, warning lamp : on the corre-
sponding side lights up in red. This warning
always occurs 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 difference in speed
is less than 12 km/h.
The yellow indicator lamp goes out if reverse
gear is engaged. Blind Spot Assist is then
deactivated.
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 : flashes. If
the turn signal remains on, detected vehicles
are indicated by the flashing of red warning
lamp :. There are no further warning tones.
Activating Blind Spot AssistXMake sure that Blind Spot Assist is activa-
ted in the on-board computer
( Y page 219).XTurn the key to position 2 in the ignition
lock.
Warning lamps : in the exterior mirrors
light up red for approximately
1.5 seconds and then turn yellow.
Towing a trailer
If you attach a trailer, make sure that you have
correctly established the electrical connec-
tion. This can be accomplished by checking
the trailer lighting. Blind Spot Assist is then
deactivated. The indicator lamp lights up yel-
low in the exterior mirrors and the Blind
Spot Assist currently unavailable
See Owner's Manual message appears in
the multifunction display.
i You can deactivate the indicator lamps in
the exterior mirrors.
To do so, deactivate Blind Spot Assist if:
R the key is in position 2 in the ignition lock
R the engine is not running
R the electrical connection to the trailer
has been established
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 windscreen. Lane Keeping
Assist detects lane markings on the road and
warns you before you leave your lane unin-
tentionally.
Driving systems199Driving and parkingZ

:Lane Keeping Assist camera
If you select km on the on-board computer in
the Display unit Speed-/odometer:
function ( Y page 220), Lane Keeping Assist
is active starting at a speed of 60 km/h. If the
miles display unit is selected, the assistance
range begins at 40 mph.
Important safety notes
GWARNING
Lane Keeping Assist cannot always clearly
identify lane markings.
In these cases, 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 keep in lane, especially if Lane
Keeping Assist alerts you.
GWARNING
The Lane Keeping Assist warning does not
return the vehicle to the original lane. There
is a risk of an accident.
Always steer, apply the brakes or accelerate
the vehicle yourself, especially if Lane Keep-
ing Assist alerts you.
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
road, weather or traffic conditions. Lane
Keeping Assist is only an aid. You are respon-
sible for the distance to the vehicle in front,
for vehicle speed, for braking in good time,
and for staying in the lane.
Lane Keeping Assist does not keep your vehi-
cle in its 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 reflection from other vehicles
(e.g. if the road surface is wet)
R the windscreen is dirty, misted up, dam-
aged or covered, for instance by a sticker,
in the vicinity of the camera
R no, or several, unclear lane markings are
present for one lane, e.g. in a construction
area
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 highly variable shade conditions
on the road
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.
Activating Lane Keeping AssistXActivate Lane Keeping Assist using the on-
board computer; to do so, select Stand‐
ard or Adaptive (Y page 219).
If you drive at speeds above 60 km/h and
lane markings are detected, the lane mark-
ings in the assistance graphics display
( Y page 217) are shown in green.200Driving systemsDriving and parking