warning light MERCEDES-BENZ CLS 2014 Repair Manual

Rangeofthe sensors
General notes
PARKTRONIC doesnot take objects into
consideration that are:
Rbelow the detection range, e.g. people,
animalsorobjects
Rabove the detection range, e.g.
overhanging loads, truck overhangs or
loading ramps.
Sensors in the front bumper, left-hand
side(example)
The sensors mustbefree from dirt, ice or
slush. They can otherwise not function
correctly. Clean the sensorsregularly, taking
care not to scratch or damage them
(Ypage 315).
Example: side view
Example: top view
Front sensors
CenterApprox.40in(approx.
100 cm)
CornersApprox.24in(approx.
60 cm)
Rear sensors
CenterApprox.48in(approx.
120 cm)
CornersApprox.32in(approx.
80 cm)
Minimumdistance
CenterApprox.8in(approx.
20 cm)
CornersApprox.6in(approx.
15 cm)
Ifthere is an obstacle withinthis range, the
relevant warning displays light up and a
warning tone sounds. If the distance falls
below the minimum, the distance may no
longer be shown.
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Warning displays
Warning display for the front area
Segments on the left-hand side of the
vehicle
Segments on the right-hand side of the
vehicle
$Segments showing operational readiness
The warning displays show the distance
between the sensors and the obstacle. The
warning displayfor the front area is located
on the dashboard above the center airvents.
The warning display for the rear area is
located on the headliner in the rear
compartment.
The warning display for each side of the
vehicle is divided intofive yellow and two red
segments. PARKTRONIC is operational if
yellow segments showing operational
readiness$light up.
The selected transmission position and the
direction in which the vehicle is rolling
determine which warning display is active
when the engineisrunning.
Transmission
position
Warning display
DFrontarea activated
R,Nor the vehicle
is rolling
backwards
Rear and frontareas
activated
PNo areas activated
One or more segments light up as the vehicle
approaches an obstacle, depending on the
vehicle's distancefrom the obstacle.
From the:
Rsixthsegmentonwards,youwill hearan
intermittentwarningtonefor
approximately two seconds.
Rseventhsegment onwards, you will hear a
warning tonefor approximately two
seconds. This indicates that you have now
reached the minimum distance.
Deactivating/activating PARKTRONIC
Indicator lamp
To deactivate/activate PARKTRONIC
If indicator lamplights up, PARKTRONIC is
deactivated. Active Parking Assist is then also
deactivated.
iPARKTRONIC is automatically activated
when you turn the SmartKey to position2
in the ignition lock.
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Problems with PARKTRONIC
ProblemPossible causes/consequences andSolutions
Only the red segments
in the PARKTRONIC
warning displaysare lit.
You also hearawarning
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 ataqualified
specialist workshop.
Only the red segments
in the PARKTRONIC
warning displaysare lit.
PARKTRONIC is then
deactivated.
The PARKTRONIC sensors are dirty or there is interference.
XCleanthe PARKTRONIC sensors (Ypage 315).
XSwitch the ignition back on.
The problem may be caused by an external source of radio or
ultrasound waves.
XSee if PARKTRONIC functions inadifferent 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.Aparking symbol
indicatesasuitable parking space. Active
steering interventioncan assistyou during
parking. You may also use PARKTRONIC
(Ypage 193).
Important safety notes
Active Parking Assist is merely an aid. It is not
areplacement for your attention to your
immediate surroundings. You are always
responsible for safe maneuvering, parking
and exitingaparking space. Make sure that
no persons, animals or objectsare in the
maneuvering range.
When PARKTRONIC is switched off, Active
Parking Assist is also unavailable.
GWARNING
The vehicle swings out when parking and in
doing so could cross into the opposite lane.
This could result inacollision with another
road user. There isarisk of an accident.
Pay attention to other road users when
parking. Stop the vehicle if necessary or
cancel the Active Parking Assist parking
procedure.
!If unavoidable, you should drive over
obstacles such as curbs slowly and not at
asharp angle. Otherwise, you may damage
the wheels or tires.
Active Parking Assist may possibly indicate
parking spaces which are not suitable for
parking, for example:
Rwhere parking or stopping is prohibited
Rin front of driveways or entrances and exits
Ron unsuitable surfaces
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ThePark Assist Active Select R
ObserveSurroundingsmessage appears in
the multifunction display.
Further transmission shifts may be
necessary.
As soon as the parking procedure is
complete, thePark Assist Finished
message appears in the multifunction
display.PARKTRONICcontinuestobe
available.
XManeuver if necessary.
XAlways observe the warning messages
displayed by PARKTRONIC (Ypage 195).
Parking tips:
RThe way your vehicle is positioned in the
parking space after parking is dependent
on various factors. These include the
position and shape of the vehicles parked
in front and behind it and the conditions of
the location. It may be the case that Active
Parking Assist guides you too far into a
parking space, or not far enough into it. In
some cases, it may also lead you across or
ontothe curb. If necessary, you should
cancel the parking procedure with Active
Parking Assist.
RYou can also engage forward gear
prematurely. The vehicle redirects and
does not drive as far into the parking space.
Shouldagear be changed too early, the
parking procedure will be canceled. A
sensible parking position can no longer be
achieved from this position.
CancelingActive Parking Assist
You can cancel Active Parking Assist at any
time.
XStop the movementofthe multifunction
steeringwheel or steer yourself.
Active Parking Assist will be canceled at
once. ThePark Assist Canceled
message appears in the multifunction
display.
or
XPress the PARKTRONIC button on the
center console (Ypage 195).
PARKTRONIC is switched off and Active
Parking Assist is immediately canceled.
ThePark Assist Canceledmessage
appears in the multifunction display.
Active Parking Assist is canceled
automatically if:
Rthe transmission is shifted too early.
Rparking using Active Parking Assist is no
longer possible.
Ryou are driving faster than6mph
(10 km/h).
Rawheel spins, ESP®intervenes or fails. The
warning lamp lights up in the
instrument cluster.
Awarning tone sounds. The parking symbol
disappears and themultifunction display
shows theParkAssist Canceled
message.
If ActiveParking Assist is canceled, you must
steer again yourself.
Rearview camera
Important safety notes
The rear view camera is only an aid. It is not
areplacementfor your attentiontoyour
immediatesurroundings. You are always
responsible for safe maneuvering and
parking.When maneuvering or parking, make
sure that there are no persons, animals or
objectsinthe area in which you are
maneuvering.
Under the following circumstances, the rear
view camera will not function, or will function
inalimited manner:
Rif the trunk lid/tailgate is open
Rin heavy rain, snow or fog
Rat night or in very dark places
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Yellow guide line atadistanceof
approximately 13 ft(4.0m)from the rear
of the vehicle
White guide line without turning the
steering wheel, vehicle width including
the exterior mirrors (static)
$CLSCoupe:yellow guide line for the
vehicle width including the exterior
mirrors,for current steering wheel angle
(dynamic)
!Yellow lane marking tires at current
steering wheel angle(dynamic)
Yellow guide line atadistance of
approximately3ft(1.0 m) from the rear
of the vehicle
%Vehicle center axle (marker assistance)
Bumper
Red guide line atadistance of
approximately 12 in (0.30 m) from the
rear of the vehicle
The guide linesare shownwhen the
transmission is in positionR.
The distance specifications only apply to
objectsthat are at ground level.
Additional messages for vehicles withPARKTRONIC
Front warning display
Additional PARKTRONIC measurement
operational readiness indicator
$Rear warning display
Vehicles with PARKTRONIC:if
PARKTRONIC is operational (Ypage 193), an
additional operational readiness indicator will
appearinCOMAND display.Ifthe
PARKTRONIC warning displays are active or
light up, warning displaysand$are also
active or light up correspondingly in the
COMAND display.
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Warning and display messages in the
multifunction display
XActivate ATTENTION ASSIST using the on-
board computer (Ypage228).
If ATTENTION ASSIST is active, you willbe
warned no sooner than 20 minutes after
yourjourney has begun. You then hear an
intermittent warning tonetwice and the
Attention Assist:Drowsiness
detectedmessage appears in the
multifunction display.
XIf necessary, takeabreak.
XPressthebutton to confirmthe
message.
On longjourneys, takeregular breaksingood
timetoallow yourself to rest properly. If you
do not takeabreak,you will be warned again
after 15 minutes at theearliest. The
preconditionfor this is that
ATTENTION ASSIST still detectstypical
indicators of fatigue or increasing lapses in
concentration.
When ATTENTION ASSIST is deactivated, the

symbol and OFF appear in the
multifunction display in the assistance
graphics display when the engine is running.
ATTENTION ASSIST is reset when you
continue your journey and startsassessing
your tiredness again if:
Ryou switch off the engine.
Ryou take off your seat belt and open the
driver's door, e.g. forachange of drivers or
to takeabreak.
Night View Assist Plus
Important safety notes
Night View Assist Plus is only an aid and is not
asubstitute for attentive driving. Do not rely
on the Night View Assist Plus display.You are
responsible for the distance to the vehicle in
front,for vehicle speed and for braking in
good time. Drive carefully and always adapt
your driving style to suit the prevailing road
and traffic conditions.
The system may be impaired or may not
function if:
Rthere is poor visibility, e.g. due to snow,
rain, fog or spray
Rthe windshield is dirty, fogged up or
covered, for instance byasticker, in the
vicinityofthe camera
Ron bends, on uphill gradients or downhill
gradients
Pedestrian recognition may be impaired or
inoperative if:
Rpedestrians are partially or entirely
obscured by objects, e.g. parked vehicles
Rthe silhouette of the pedestrian in the Night
View Assist Plus display is incompleteor
interrupted, e.g. by powerful light
reflections
Rpedestrians do not contrast adequately
from the background
Rpedestrians are not in an upright position,
e.g. sitting, squatting or lying
In addition to the illumination provided by the
normal headlamps, Night View Assist Plus
uses infrared light to illuminate the road.
Night View Assist Plus camerapicks up
the infrared light and displaysamonochrome
image in COMAND. The image displayed in
COMAND corresponds toaroad lit up by high-
beam headlamps. This enables you to see the
road's course and any obstacles in good time.
If pedestrian recognition is activated,
pedestrians recognized by the system are
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pedestrians cannot be gaged accurately by
lookingatascreen.
It may be the case that objects are highlighted
as well as pedestrians.
Fogged up or dirty windshield
GWARNING
Always rememberthat you must concentrate
primarily on driving the vehicle.Adriver's
attention to the road must always be his/her
primary focus when driving. For your safety
and the safety of others: stop the vehicle
before attempting to clean fogged up
windows or the windshield area in front of the
Night View Assist Plus camera.
Please remember that when your vehicle is
traveling ataspeed of only 30 mph
(approximately 50 km/h)itcoversadistance
of 44 ft (approximately 14 m) per second.
If the windshield in front of the camera is
fogged up or dirty on the inside or outside, the
Night View Assist Plus displayisaffected.
XTo defrost:check the automatic air
conditioning settings (Ypage 140) and fold
down the camera cover (Ypage 316).
XTo defrost the inside of the windshield:
fold down the camera cover (Ypage 316)
and clean the windshield(Ypage 314).
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This device has been approved by the FCC
asa"Vehicular RadarSystem". The radar
sensor is intended foruse 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:
Rdirt on the sensors or anything else
covering the sensors
Rpoor visibility, e.g. due to fog, heavy rain,
snow or spray
Rnarrow vehicles, e.g. motorcycles or
bicycles
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 similarlane borders
Vehiclesinthemonitoringrangeare then not
indicated.
BlindSpotAssist monitors the area up to
10 ft (3 m) behind your vehicle and directly
next to your vehicle, as shown in the diagram.
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 there are vehicles driving at the
inner edge of their lanes.
Due to the nature of the system:
Rwarnings may be issued in error when
driving close to crash barriers or similar
solid lane borders.
Rthe warning is canceled when driving for an
extended period next to long vehicles, such
as trucks.
The two radar 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 sensors must not be covered, for
example by cycle racks or overhanging loads.
Followingasevere impact or in the event of
damage to the bumpers, have the function of
the sensors checked ataqualified specialist
workshop. Blind Spot Assist may otherwise
not work properly.
Indicator and warning display
Yellowindicator lamp/red warning lamp
Active Blind Spot Assist is not active at
speeds below approximately 20 mph
(30 km/h). Vehicles in the monitoring range
are then not indicated.
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
208Driving systems
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indicator lamp goes out and BlindSpot Assist
is operational.
Ifavehicle is detected within the monitoring
rangeofBlindSpot Assist at speeds above
20 mph (30 km/h), warninglampon the
correspondingside lightsupred. This warning
is always emitted whenavehicle enters the
blind spot monitoring rangefrom behind or
from the side.When you overtakeavehicle,
the warning only occurs if the difference in
speed is less than7mph (12km/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
Ifavehicle is detected in the monitoring range
of Blind Spot Assist and you switchonthe
correspondingturn signal,adouble warning
tonesounds. 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
(Ypage 228) is activated in the on-board
computer.
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
Important safety notes
GWARNING
Lane Keeping Assist may not always clearly
recognizelane markings.
In this case, Lane Keeping Assist may:
Rgive an unnecessary warning
Rnot giveawarning
There isarisk 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
return the vehicle to the original lane. There
isarisk 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
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
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 oncomingtraffic,
the sun or reflections (e.g. when the road
surface is wet)
Rthe windshield is dirty, fogged up, damaged
or covered, for instancebyasticker, in the
vicinity of the camera
Rthere are no, several or unclear lane
markings foralane, e.g. in areas with road
construction work
Rthe lane markings are worn away,dark or
covered up, e.g. by dirt or snow
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specialist workshop. Active Blind Spot Assist
may otherwise no longer work properly.
Monitoring area
GWARNING
Active Blind Spot Assist does not detect all
traffic situations and road users. There is a
risk of an accident.
Always make sure that there is sufficient
distance on the side for other traffic or
obstacles.
Active 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.
The detection of obstacles can be impaired in
the case of:
Rdirt on the sensors or anything else
covering the sensors
Rpoor visibility, e.g. due to rain, snow or
spray
Vehicles in the monitoring range are then not
indicated or indicated withadelay.
Active Blind Spot Assist may not detect
narrow vehicles, such as motorcycles or
bicycles, or may only detect them too late.
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 there are vehicles at the edge
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.
Rthe warning is canceled when driving for an
extended period next to long vehicles, such
as trucks.
Indicator and warning display
Yellowindicator lamp/red warning lamp
Active Blind Spot Assist is not active at
speeds below approximately 20 mph
(30 km/h). Vehicles in the monitoring range
are then not indicated.
When active Blind Spot Assist is activated,
indicator lampin the exterior mirrors lights
up yellow at speeds of up to
20 mph(30 km/h). At speeds above 20 mph
(30 km/h), the indicator lamp goes out and
active Blind Spot Assist is operational.
Ifavehicle is detected within the monitoring
range of Blind Spot Assist at speeds above
20 mph (30 km/h), warning lampon the
corresponding side lights up red. This warning
is always given whenavehicle enters the
blind spot monitoring range from behind or
from the side. When you overtakeavehicle,
the warning only occurs if the difference in
speed is less than7mph (12km/h).
The yellow indicator lamp goes out if reverse
gear is engaged. In this event,Active Blind
Spot Assist is no longer active.
212Driving systems
Driving and parking