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only happen if ATTENTION ASSIST still
detects typical indicators of fatigue or
increasing lapses in concentration.
If a warning is output in the multifunction dis-
play, COMAND Online provides a service sta-
tion search. You can select a service station
and navigation to this service station will then
begin. This function can be activated and
deactivated in COMAND Online. Traffic Sign Assist
General notes Traffic Sign Assist displays the maximum
speed permitted and overtaking restrictions
to the driver in the instrument cluster. Driving
onto a section of road in the wrong direction
triggers a warning. Traffic Sign Assist detects
traffic signs with camera system :attached
behind the top of the windscreen. The data
and general traffic regulations stored in the
navigation system are also used to determine the current speed limit.
If a traffic sign that is relevant to your vehicleis passed, the display of the speed limits and
overtaking restrictions is updated.
The display can also be updated without a
visible traffic sign if:
R the vehicle changes roads (e.g. motorway
exit or slip road)
R a village or town boundary is passed which
is stored in the digital map
R the last traffic sign detected by the camera
has not been repeated If a sign indicating the end of a restriction
(speed limit or overtaking restriction) is
passed, the sign is displayed for five seconds.
The currently applicable traffic regulation
continues to be shown in the assistance
graphic display (Y page 257).
The camera also detects traffic signs with a
restriction indicated by an additional sign
(e.g. in wet conditions).
The traffic signs are only displayed with the
restrictions if:
R the regulation must be observed with the
restriction, or
R Traffic Sign Assist is unable to determine
whether the restriction applies
If Traffic Sign Assist is unable to determine a
maximum permitted speed from any of the
available sources, no speed limit is displayed
in the instrument cluster either. Traffic Sign Assist is not available in all coun-
tries. In this case, display :is shown in the
speedometer.
Important safety notes Traffic Sign Assist is only an aid and is not
always able to correctly display speed limits
and overtaking restrictions. Traffic signs
always have priority over the Traffic Sign
Assist display.230
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The system may be either functionally
impaired or temporarily unavailable if:
R visibility is poor, e.g. due to snow, rain, fog
or spray
R there is glare, e.g. from the sun being low in
the sky
R there is dirt, ice or misting on the wind-
screen in the vicinity of the camera
R traffic signs are hard to detect (dirt, ice,
snow)
R the traffic signs are insufficiently lit at night
R signs are ambiguous (e.g. traffic signs on
construction sites or in adjacent lanes)
R the information in the digital street map of
the navigation system is incorrect or out of
date
Activating Traffic Sign Assist X
Activate the Traffic Sign Assist display
using the on-board computer
(Y page 259).
If you have activated the Traffic Sign Assist
display in the on-board computer, the traffic
regulations (speed limits and overtaking
restrictions) are displayed in the instrument
cluster for five seconds respectively. The
wrong-way warning and the traffic sign dis-
play for speed limits and overtaking restric-
tions remain active even when the display has
been deactivated.
Instrument cluster display Speed limit with overtaking restriction A maximum permitted speed of 60 km/h
(60 mph)
:and an overtaking restriction ;
apply.
Speed limit with unknown restriction :
Maximum permitted speed
; Maximum permitted speed for vehicles
for which the restriction in the additional
sign is relevant
= Additional sign for unknown restriction
A maximum permitted speed of 80 km/h
(80 mph) and a speed limit of 60 km/h
(60 mph) with an unknown restriction apply.
Speed limits in wet conditions :
Maximum permitted speed
; Additional signs for wet conditions
A maximum permitted speed of 80 km/h
(80 mph) applies in wet conditions and when
Traffic Sign Assist has determined that the
restriction must be observed. Driving systems
231Driving and parking Z
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End of an overtaking restriction
A maximum permitted speed of 60 km/h
(60 mph) :applies. The overtaking restric-
tion no longer applies ;. The traffic sign for
signalling the end of an overtaking restriction
is displayed for five seconds.
End of a speed limit No speed limit
:applies here.
i The unit for the speed limit (km/h or mph)
depends on the country in which you are
driving. It is generally neither shown on the
traffic sign nor on the instrument cluster
but must be taken into account when
observing the maximum permitted speed. No entry (wrong-way warning) :
Warning message in the instrument clus-
ter (wrong-way warning)
If no entry signs are passed, a warning mes-
sage is displayed in the instrument cluster
should Traffic Sign Assist detect that you are
driving in the wrong direction. You will then
also hear a warning tone. You should imme-
diately check your direction of travel in order to avoid danger to yourself and other road
users. Night View Assist Plus
General notes 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 camera ;picks up the
infrared light and displays a monochrome
image in the multifunction display. The image
shown in the display corresponds to a road lit
up by main-beam headlamps. This enables
you to see the road's course and any obsta- 232
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cles in good time. When pedestrian recogni-
tion is active, pedestrians recognised by the
system are visually highlighted in colour in the
Night View Assist Plus display with small
frame corners.
In addition, an infrared camera is integrated
into the radiator trim :. The camera helps
detect pedestrians and animals. Observe the notes on cleaning the infrared camera
(Y page 351).
i Infrared light is not visible to the human
eye and therefore does not dazzle. Night
View Assist Plus can therefore remain
switched on even if there is oncoming traf- fic.
Important safety notes Night View Assist Plus is only an aid and is not
a substitute 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 func-
tion:
R if there is poor visibility, e.g. due to snow,
rain, fog or spray
R if the windscreen is dirty, misted up or cov-
ered, for instance by a sticker, in the vicinity of the camera
R if the thermal imaging camera in the radia-
tor grille is dirty, misted up or covered
R on bends, hilltops or downhill gradients
R at high outside temperatures
Night View Assist Plus cannot display objects
directly in front of or beside the vehicle.
It may be the case that other objects are
marked or highlighted as well as pedestrians
and animals. Pedestrian and animal recognition General notes
Pedestrian or animal recognition may be
impaired or inoperative if:
R pedestrians or animals are partially or
entirely obscured by other objects, e.g.
parked vehicles
R the silhouette of the pedestrian or of the
animal in the Night View Assist Plus display
is incomplete or interrupted, e.g. by pow-
erful light reflections
R pedestrians or animals do not contrast with
the surroundings
R the camera system no longer recognises
pedestrians as persons due to special
clothing or other objects
R pedestrians are not in an upright position,
e.g. sitting, squatting or lying
R animals are not recognised by the system,
e.g. because of their size or shape
Pedestrian and animal recognition is deacti-
vated at temperatures above 32 †. The spot- light function and automatic activation are
then no longer active.
Pedestrian recognition :
Night View Assist Plus display
; Standby symbol for active pedestrian rec-
ognition
= Highlighting
? Pedestrian recognised
Night View Assist Plus can recognise pedes-
trians using typical characteristics, e.g. the Driving systems
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body contours and posture of a person stand-
ing upright.
Pedestrian recognition is then switched on
automatically if:
R Night View Assist Plus is activated
R you are driving faster than approximately
10 km/h
R it is dark
If pedestrian recognition is active, readiness
symbol ;appears. Persons who are detec-
ted are highlighted by framing =. If the
pedestrian recognition system has brought a
pedestrian to your attention, look through the
windscreen to evaluate the situation. The
actual distance to objects and pedestrians
cannot be gauged accurately by looking at a
screen.
Animal recognition
Animals can be recognised in the following
situations:
R darkness
R outside built-up areas
R below an outside temperature of 32 †
Night View Assist Plus can recognise larger
animals such as deer, cows or horses using
typical characteristics.
The system does not detect:
R smaller animals, e.g. dogs and cats
R animals whose silhouette is not clearly rec-
ognisable
When detected, animals are marked with
small coloured frame corners. In contrast to
pedestrian recognition, there is no separate
readiness symbol in the multifunction dis-
play. Activating/deactivating Night View
Assist Plus Activation conditions
You can only activate Night View Assist if all of
the following conditions have been fulfilled:
R the ignition is switched on (Y page 161) or
the engine has been started.
R the light switch is in the ÃorL posi-
tion.
R reverse gear has not been engaged.
Activating Night View Assist Plus X
Press button :.
The Night View Assist Plus display appears in the multifunction display.
i The infrared headlamps only switch on in
the dark when the vehicle is being driven at speeds of at least 10 km/h. This means
that you do not have the full visual range
while stationary and cannot check whether
Night View Assist Plus is working. The infra- red headlamps are deactivated at speeds
below 5 km/h. The Night View image con-
tinues to be displayed until you deactivate
it by pressing button :.
Automatic activation
You can select the Night View Assist Night View Assist
Automatic Automatic activation
activation option via the Night
View Assist menu. The pedestrian and animal
search function remains active even when the
Night View image is not displayed. In the dark, in unlit surroundings and at speeds of more
than 60 km/ h,the Night View image is auto- 234
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matically displayed in the multifunction dis-
play as soon as pedestrians or animals are
detected.
X In the assistance menu, select automatic
delayed switch-off of Night View Assist Plus
(Y page 259).
Deactivating Night View Assist Plus
X Press button :.
The Night View Assist Plus display disap-
pears from the multifunction display. Night View Assist is deactivated.
Spotlight function General notes
Under certain conditions, the spotlight func-
tion uses the headlamps to flash at detected
pedestrians.
The spotlight function is only active if:
R pedestrian recognition is active
R the road surface is not lit
R the driving speed is at least 60 km/h
R the "Adaptive Highbeam Assist PLUS" func-
tion is activated (Y page 131)
The spotlight function is not active or is active
only to a limited extent if:
R you are driving in city traffic
R there are pedestrians located in the area of
an oncoming vehicle or a vehicle in front
Activating the spotlight function
The pedestrian detection with spotlight func- tion runs in the background. If the prerequi-
sites are met, the spotlight function uses the
headlamps to flash four short pulses at a
pedestrian detected on or near to the road
surface.
X In the light menu, select the spotlight func-
tion of Night View Assist (Y page 263).
The spotlight function does not flash at ani-
mals. Display in the assistance graphic
Pedestrian symbol
:in the assistance
graphic indicates the status of the spotlight
function. If the symbol is displayed not filled
in, the function is switched on. If the symbol is displayed filled in, the conditions for the spot-
light function are met.
Showing the assistance graphic
X Select the Assistance graphic Assistance graphic menu on
the on-board computer (Y page 257). Driving systems
235Driving and parking Z
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Problems with Night View Assist Plus
Problem
Possible causes/consequences and
M
MSolutions The picture quality of
Night View Assist Plus
has deteriorated. The windscreen is misted up on the inside.
X Fold down the camera cover (Y page 351).
X Demist the windscreen (Y page 144). The windscreen is iced up.
X De-ice the windscreen (Y page 144). The windscreen wipers are smearing the windscreen.
X Replace the wiper blades (Y page 134). The windscreen is smeared after the vehicle has been cleaned in a
car wash.
X Clean the windscreen (Y page 348). The windscreen has been damaged by stone impact in the cam-
era's field of vision.
X Replace the windscreen. The pedestrian and ani-
mal recognition is not
available. The infrared camera in the radiator grille is dirty.
X Use a soft cloth and water to clean the infrared camera. Driving Assistance Plus package
General notes The Driving Assistance PLUS package con-
sists of DISTRONIC PLUS (Y
page 194), Active
Blind Spot Assist (Y page 236) and Active
Lane Keeping Assist (Y page 239).
Active Blind Spot Assist General notes
Active Blind Spot Assist monitors the areas
on either side of the vehicle that are not visi-
ble to the driver with two lateral, rear-facing
radar sensors. A warning display in the exte-
rior mirrors draws your attention to vehicles
detected in the monitored area. If you then
switch on the corresponding turn signal to
change lanes, you will also receive a visual
and audible collision warning. If a risk of side impact is detected, corrective braking may
help you avoid a collision. Active Blind Spot
Assist evaluates the free space in the direc-
tion of travel and to the side before making a
course-correcting brake application. For this,Active Blind Spot Assist uses the forward-
facing radar sensors.
Active Blind Spot Assist supports you from a
speed of approximately 30 km/h.
Important safety notes
Active Blind Spot Assist is only an aid and is
not a substitute for attentive driving. 236
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G
WARNING
Active Blind Spot Assist does not react to
vehicles:
R overtaking too closely on the side, placing
them in the blind spot area
R if the difference in the speed of approach
and overtaking is too great
As a result, Active Blind Spot Assist may nei-
ther give warnings nor intervene in such sit-
uations. 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.
Radar sensors
The Active Blind Spot Assist radar sensors are
integrated into the front and rear bumpers
and behind a cover in the radiator trim. Make sure that the bumpers and the cover in the
radiator trim are free of dirt, ice or slush. The rear sensors must not be covered, e.g. 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. Active Blind Spot Assist may oth-
erwise no longer function properly.
Monitoring range G
WARNING
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 dis-
tance to the side for other traffic or obstacles. Active Blind Spot Assist monitors the area up
to 3.0 mbehind your vehicle and directly next
to your vehicle, as shown in the diagram.
The detection of vehicles may be impaired in the case of:
R dirt on the sensors or obscured sensors
R poor visibility, e.g. due to rain, snow or
spray
Vehicles in the monitoring range are then not
indicated.
Active Blind Spot Assist may not detect nar-
row vehicles, such as motorcycles or bicy-
cles, 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 nearest your vehicle.
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 Driving systems
237Driving and parking Z