MERCEDES-BENZ S CLASS 2017 Owners Manual

X
Call up the assistance graphic and select
ATTENTION AS SIST ( Y
page 221).
The foll owin g information appears:R
Length of the jo urney since the last break.R
The attention level determined by ATTENTION
AS SIST ( Attention Level ), displ ayed in a
bar displ ay in five leve ls from high to lowR
If ATTENTION AS SIST is unab le to calculate
the attention level and cannot issue a warn-
ing, the System Suspended message
appears. The bar displ ay then changes the
displ ay, e.g. if you are driv ing at a speed below
37 mph (60 km/h) or above 124 mph
(200 km/h).
Activating ATTENTION ASSIST X
Activate ATTENTION AS SIST using the on-
board computer ( Y
page 223).
The system determines the attention level of
the driv er depen din g on the setting selected:
If Standard is selected: the sensit ivit y wit h
whic h the system determines the attention level
is set to normal.
If Sensitive is selected: the sensit ivit y is set
higher. The attention level detected by Attention
Assist is adapted according ly and the driv er is
warned earlier.
When ATTENTION AS SIST is deactivate d, the

Traffic Sign Assist is not available in all coun-
tries. In this case, display C appears in the
assistance graphic ( Y
page 221).
Important safety notes Traffic Sign Assist is only an aid and is not always
able to correctly display speed limits. Traffic
signs always have priority over the Traffic Sign
Assist display.
The system may be either functionally impaired
or temporarily unavailable if 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incorrect or out of date.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 222).
If you have activated the Traffic Sign Assist dis-
play in the on-board computer, the traffic regu-
lations (speed limits and overtaking restrictions)
appear in the instrument cluster for five seconds
in each case. The wrong-way warning and the
traffic sign display for speed limits and overtak-
ing restrictions remain active even when the
display has been deactivated.
Instrument cluster display
Displaying the assistance graphic X
Call up the assistance graphics display func-
tion using the on-board computer
( Y
page 221).
Detected traffic signs appear in the instru-
ment cluster. Speed limit with unknown restriction
C
Maximum permitted speed D
Maximum permitted speed for vehicles for
which the restriction in the additional sign is
relevant

and any obstacles in good time. When pedes-
trian recognition is active, pedestrians recog-
nized by the system are visually highlighted in
color in the Night View Assist Plus display with
small frame corners.
In addition, an infrared camera is integrated into
radiator trim C . The camera helps detect
pedestrians and animals. Observe the notes on
cleaning the infrared camera ( Y
page 324).
i Infrared light is not visible to the human eye
and therefore does not glare. Night View
Assist Plus can therefore remain switched on
even if there is oncoming traffic.
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 driv-
ing style to suit the prevailing road and traffic
conditions.
The system may be impaired or may not function
if: R
there is poor visibility, e.g. due to snow, rain,
fog or spray R
the windshield is dirty, fogged up or covered,
for instance by a sticker, in the vicinity of the
camera R
the infrared camera in the radiator trim is
dirty, fogged up or obscured 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 is possible that, in addition to people and ani-
mals, other objects are also marked or highligh-
ted .
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 vehi-
cles R
the silhouette of the pedestrian or of the ani-
mal in the Night View Assist Plus display is incomplete or interrupted, e.g. by powerful
light reflections R
pedestrians or animals do not contrast with
the surroundings R
the camera system no longer recognizes
pedestrians as persons due to special cloth-
ing or other objects R
pedestrians are not in an upright position, e.g.
sitting, squatting or lying R
animals are not recognized by the system,
e.g. because of their size or shape
Pedestrian and animal recognition is deactiva-
ted at temperatures above 90 ‡ (32 †). The
spotlight function and automatic delayed
switch-off are then no longer active.
Pedestrian recognition
C
Night View Assist Plus display D
Readiness symbol for active pedestrian rec-
ognition

objects and pedestrians cannot be gaged accu-
rately by looking at a screen.
Animal recognition Animals can be recognized in the following sit-
uations: R
darkness R
outside built-up areas R
below an ambient temperature of 90 ‡
(32 †).
Night View Assist Plus can recognize larger ani-
mals 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-
ognizable
When detected, animals are marked with small
color frame corners. In contrast to pedestrian
recognition, there is no separate readiness sym-
bol in the multifunction display.
Activating/deactivating Night View
Assist Plus
Activation conditions You can only activate Night View Assist Plus if all
of the following conditions are met: R
the ignition is switched on ( Y
page 145) or the
engine has been started. R
the light switch is in the X or X posi-
tion. R
reverse gear has not been engaged.
Activating/deactivating X
Press button C .
If Night View Assist Plus is activated, the
Night View Assist Plus display is shown in the
multifunction display.
The infrared headlamps only switch on in the
dark from speeds of approximately 6 mph
(10 km/ h) . This means that you do not have the
full visual range while the vehicle is stationary
and cannot check whether Night View Assist
Plus is working. The infrared headlamps are
deactivated at speeds below 3 mph (5 km/h).
The Night View image continues to be displayed
until you deactivate it by pressing button C .
Automatic activation You can select the Night View Assist Auto‐
matic 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 automatically
displayed in the multifunction display as soon as
pedestrians or animals are detected. X
In the assistance menu, select automatic acti-
vation of Night View Assist Plus
( Y
page 222).
Spotlight function
General notes Under certain conditions, the spotlight function
uses the headlamps to flash at detected pedes-
trians.
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 40 mph
(60 km/h) R
the "Adaptive Highbeam Assist PLUS" func-
tion is activated ( Y
page 127).
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 function
is running the background. If the prerequisites
are met, the spotlight function uses the head-202
Driving systems
Driving and parking

lamps to flash four short pulses at a pedestrian
detected on or near to the road. X
In the light menu, select the spotlight function
of Night View Assist Plus ( Y
page 225).
The spotlight function does not flash at animals.
Display in the assistance graphic X
To display the assistance graphic: select
the Assistance Graphic menu using the on-
board computer ( Y
page 221).
Pedestrian symbol C 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.
Problems with Night View Assist Plus Problem
Possible causes/consequences and P Solutions
The picture quality of
Night View Assist Plus
has deteriorated. The windshield is fogged up on the inside. X
Fold down camera cover ( Y
page 324).X
Defrost the windshield ( Y
page 139).
The windshield is iced up. X
De-ice the windshield ( Y
page 139).
The windshield wipers are smearing the windshield. X
Replace the wiper blades ( Y
page 129).
The windshield is smeared after the vehicle has been cleaned in a car
wash. X
Clean the windshield ( Y
page 322).
There is windshield chip damage in the camera's field of vision. X
Replace the windshield.
The pedestrian and ani-
mal recognition is not
available. the infrared camera in the radiator trim is dirty X
Use a soft cloth and water to clean the infrared camera. Driving systems 203
Driving and parking Z

Drivin g Assistance PLUS package
General notes The Driving Assistanc e PLU S package consist s
of DISTRONIC PLU S ( Y
page 171), Active Blin d
Spot Assis t ( Y
page 204) and Active Lan e Keep-
in g Assis t ( Y
page 206).
Active Blind Spot Assist General notes Active Blin d Spot Assis t uses a radar sensor
system, pointe d toward th e rea r of th e vehicle,
to monito r th e are a to th e sides of th e vehicle
whic h th e driver is unable to see . A warnin g dis -
play in th e exterio r mirrors draws your attention
to vehicles detecte d in th e monitored area. If
you then switch on th e correspondin g turn sig -
nal to chang e lane, you will also receiv e an opti-
cal and audible warning. If a ris k of latera l colli-
sio n is detected, corrective braking may hel p
you avoid a collision . Before a course-correcting
brake application , Active Blin d Spot Assis t eval-
uates th e spac e in th e direction of trave l and at
th e sides of th e vehicle. Fo r this, Active Blin d
Spot Assis t uses th e forward-facin g radar sen -
sors.
Active Blin d Spot Assis t supports you from a
speed of approximately 20 mph (30 km/h).
Important safet y notesActive Blin d Spot Assis t is only an aid and is no t
a substitute fo r attentive driving.
G WARNING
Active Blin d Spot Assis t doe s no t react to :R
vehicles overtaken to o closely on th e side,
placin g them in th e blin d spo t are aR
vehicles whic h approac h wit h a larg e speed
differential and overtak e your vehicle
As a result , Active Blin d Spot Assis t may nei-
ther giv e warnings no r interven e in suc h sit -
uations. There is a ris k of an accident.
Always observ e th e traffic condition s care-
fully, and maintain a saf e latera l distance.
i US A only: Thi s devic e has bee n approved by
th e FCC as a "Vehicular Radar System". The
radar sensor is intended fo r use in an auto-
motive radar syste m only. Removal, tamper-
ing, or altering of th e devic e will void any war- ranties, and is no t permitte d by th e FCC. Do
no t tampe r with, alter, or use in any non-
approved way.
An y unauthorized modification to this devic e
could void th e user's authorit y to operat e th e
equipment.
i Canada only: Thi s devic e complies wit h
RSS-210 of Industry Canada. Operation is
subjec t to th e followin g tw o conditions:
1. Thi s devic e may no t cause harmful inter-
ference , and
2. Thi s devic e mus t accept any i nterferenc e
re
ceived, includin g interferenc e that may
cause undesired operation of th e device.
Removal, tampering, or altering of th e devic e
will void any warranties , and is no t permitted.
Do no t tampe r with, alter, or use in any non-
approved way.
An y unauthorized modification to this devic e
could void th e user's authorit y to operat e th e
equipment.
Rada r sensor sThe Active Blind Spot Assis t radar sensor s are
integrated into th e fron t and rea r bumper s and
behin d a cover in th e radiator trim. Mak e sur e
that th e bumper s and th e cover in th e radiator
grill are free of dirt, ic e or slush. The rea r sensor s
mus t no t be covered, fo r example by cycle racks
or overhangin g cargo. Followin g a severe impact
or in th e event of damage to th e bumpers, hav e
th e function of th e radar sensor s checke d at a
qualified specialis t workshop . Active Blin d Spot
Assis t may otherwise no longer wor k properly.
Monitoring area
G WARNING
Active Blind Spot Assis t doe s no t detec t all
traffic situation s and road users. There is a
ris k of an accident.
Always mak e sur e that there is sufficien t dis -
tanc e on th e sid e fo r other traffic or obstacles.204
Driving systems
Driving an d parking

At a distance of approximately 1.6 ft (0.5 m) D
from the vehicle, Active Blind Spot Assist mon-
itors the area up to 10 ft (3 m) next to

signal remains on, detected vehicles are indica-
ted by the flashing of red warning lamp . There
are no further warning tones.
Course-correcting brake application If Active Blind Spot Assist detects a risk of a lat-
eral collision in the monitoring range, a course-
correcting brake application is carried out. This
is meant to assist you in avoiding a collision.
G WARNING
A course-correcting brake application cannot
always prevent a collision. There is a risk of an
accident.
Always steer, brake or accelerate yourself,
especially if Active Blind Spot Assist warns
you or makes a course-correcting brake appli-
cation. Always maintain a safe distance at the
sides.
If a course-correcting brake application occurs,
the red warning lamp flashes in the exterior mir-
ror and a dual warning tone sounds. In addition,
a display underlining the danger of a side colli-
sion appears in the multifunction display.
In very rare cases, the system may make an
inappropriate brake application. A course-cor-
recting brake application may be interrupted at
any time by countersteering slightly or acceler-
ating.
The course-correcting brake application is avail-
able in the speed range between 20 mph
(30 km/h) and 120 mph (200 km/h).
Either no braking application, or a course-cor-
recting brake application adapted to the driving
situation occurs if: R
there are vehicles or obstacles, e.g. crash
barriers, located on both sides of your vehicle. R
a vehicle approaches you too closely at the
side. R
you have adopted a sporty driving style with
high cornering speeds. R
you clearly brake or accelerate. R
a driving safety system intervenes, e.g. ESP ®
or PRE-SAFE ®
Brake.R
ESP ®
is switched off.R
a loss of tire pressure or a defective tire is
detected. Switching on Active Blind Spot Assist X
Make sure that Active Blind Spot Assist is
activated in the on-board computer
( Y
page 223) X
Switch on the ignition.
Warning lamps in the exterior mirrors light up
red for approximately 1.5 seconds. Gray radar
waves propagating backwards appear next to
the vehicle in the assistance display on the
multifunction display.
Active Lane Keeping Assist General notes
Active Lane Keeping Assist monitors the area in
front of your vehicle by means of multifunction
camera C at the top of the windshield. Various
different areas to the front, rear and side of your
vehicle are also monitored with the aid of the
radar sensor system. Active Lane Keeping
Assist detects lane markings on the road and
can warn you before you leave your lane unin-
tentionally. If you do not react to the warning, a
lane-correcting application of the brakes can
bring the vehicle back into the original lane.
This function is available in a speed range
between 40 mph and 120 mph (60 km/h and
200 km/h).
Important safety notes
If you fail to adapt your driving style, Active Lane
Keeping Assist can neither reduce the risk of an
accident nor override the laws of physics. Active
Lane Keeping Assist cannot take account of
road and weather conditions. It may not recog-
nize traffic situations. Active Lane Keeping
Assist is only 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.206
Driving systems
Driving and parking

Active Lane Keeping Assist cannot continuously
keep your vehicle in its lane.
G WARNING
Active Lane Keeping Assist cannot always
clearly detect lane markings.
In such cases, Active Lane Keeping Assist
can: R
give an unnecessary warning and then
make a course-correcting brake application
to the vehicle R
not give a warning or intervene
There is a risk of an accident.
Always pay particular attention to the traffic
situation and keep within the lane, especially
if Active Lane Keeping Assist alerts you. Ter-
minate the intervention in a non-critical driv-
ing situation.
The system may be impaired or may not function
if: R
there is poor visibility, e.g. due to insufficient
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 windshield is dirty, fogged up, damaged or
covered, for instance by a sticker, in the vicin-
ity of the camera R
the radar sensors in the front or rear bumpers
or the radiator trim are dirty, e.g. obscured by
snow R
there are no, several or unclear lane markings
for a lane, e.g. in areas with road construction
work R
the lane markings are worn away, dark or cov-
ered up, e.g. by dirt or snow R
the distance to the veh icle in front is too small
and the lane markings thus cannot be detec-
ted 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 road
If no vehicle is detected in the adjacent lane and
broken lane markings are detected, no lane-cor-
recting brake application is made. Warning vibration in the steering wheel 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 second s.
In orde r that you are warned only when neces-
sary and in good time if you cross the lane mark-
ing, the system recognizes certain conditions
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 highway. 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.
Lane-correcting brake application If you leave your lane, under certain circumstan-
ces the vehicle will brake briefly on one side.
This is meant to assist you in bringing the vehicle
back to the original lane.
G WARNING
A lane-correcting brake application cannot
always bring the vehicle back into the original
lane. There is a risk of an accident.
Always steer, brake or accelerate yourself,
especially if Active Lane Keeping Assist warns
you or makes a lane-correcting brake appli-
cation.
G WARNING
Active Lane Keeping Assist does not detect
traffic conditions or road users. In very rare
cases, the system may make an inappropriate
brake application, e.g. after intentionally driv-
ing over a solid lane marking. There is a risk of
an accident.
An inappropriate brake application may be
interrupted at any time if you steer slightly in
the opposite direction. Always make sure that
there is sufficient distance on the side for
other traffic or obstacles.Driving systems 207
Driving and parking Z

If a lane-correcting brake application occurs,
display C appears in the multifunction display.
The brake application also slightly reduces vehi-
cle speed.
A lane-correcting brake application can be made
after driving over a lane marking recognize as
being solid or broken. Before this, a warning
must be given by means of intermittent vibration
in the steering wheel. In addition, a lane with
lane markings on both sides must be detected.
In the case of a broken lane marking being
detected, a lane-correcting brake application
can only be made if a vehicle has been detected
in the adjacent lane. The following vehicles can
have an influence on brake application: oncom-
ing traffic, vehicles that are overtaking and vehi-
cles that are driving parallel to your vehicle.
A further lane-correcting brake application can
only occur after your vehicle has returned to the
original lane.
No lane-correcting brake application occurs if: R
you clearly and actively steer, brake or accel-
erate. R
you cut the corner on a sharp bend. R
you have switched on the turn signal. R
a driving safety system intervenes, e.g. ESP ®
,
PRE-SAFE ®
Brake or Active Blind Spot Assist.R
you have adopted a sporty driving style with
high cornering speeds or high rates of accel-
eration. R
ESP ®
is switched off.R
the transmission is not in position D .R
a loss of tire pressure or a defective tire has
been detected and displayed. R
an obstacle in the lane in which you are driving
has been detected. Active Lane Keeping Assist may not detect other
road users or traffic situations. An inappropriate
brake application may be interrupted at any time
if you: R
steer slightly in the opposite direction. R
switch on the turn signal. R
clearly brake or accelerate.
A lane-correcting brake application is interrup-
ted automatically if: R
a driving safety system intervenes, e.g. ESP ®
,
PRE-SAFE ®
Brake or Active Blind Spot Assist. R
lane markings can no longer be recognized.
Activating/deactivating Active Lane
Keeping Assist
X
Press button D .
Indicator lamp C lights up. The Lane Keep‐
ing Assist On message appears in the mul-
tifunction display. If all conditions have been
satisfied, a warning or steering intervention
may be made.
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lines in the assistance graphic
( Y
page 221) appear in green. Active Lane
Keeping Assist is ready for use. X
To deactivate: press button D .
Indicator lamp C goes out. The Active Lane
Keeping Assist is deactivated. The Lane
Keeping Assist Off message appears in
the multifunction display.
Selecting Standard or Adaptive setting X
In the DriveAssist menu on the on-board
computer, select the Active Lane Keep‐
ing Assist function ( Y
page 223).X
Select setting Standard or Adaptive .
When Standard is selected, no warning vibra-
tion occurs in the following situations:208
Driving systems
Driving and parking