2021 MERCEDES-BENZ S-CLASS SALOON LONG steering

When
Active Lane Change Assist is available, the
± display appears along with green ar rows in
th e driver displa y.Ifth e system has been activa-
te d but is not cur rently available, the± display
appears along with grey arro ws inthe driver dis-
pla y.
If no vehicle or obs tacle is de tected in the adja-
cent lane and a lane change is permitted, the lane
ch ange begins aTer the driver has indicated
brie0y. The lane change is shown tothe driver
with a 0ashing green ar row next tothe±
steering wheel symbol. Green ar row 1 is dis-
pla yed in the appropriate adjacent lane in the
Assistance menu inthe driver displa y.The Lane
change to the left message,fo rex ample, also
appears.
Ac tive Lane Change Assist can be cancelled in
va rious situations, including thefo llowing:
R Change in the sur rounding conditions (e.g.
de tected obs tacle).
R The driver remo vesth eir hands from the steer-
ing wheel.
R The driver steers with too much forc e or in the
opposite direction. R
The driver mo vesth e turn signal indicator in
th e opposite direction.
R Active Distance Assist DISTRONIC or Active
St eering Assist is deactivated.
R The vehicle cann otmake the lane change as
planned.
Cancellation of Active Lane Change Assist is dis-
pla yed as follo ws:
R The ar row in the selected direction of tr avel
turns red.
R A cor responding message appears on the
driver displa y.
R In cer tain circumstances a warning tone
sounds. &
W WARNI NG
ARNI NGRisk of accident when changing
lane toan occupied adjacent lane
Lane Change Assist cann otalw ays clear ly
de tect if the adjacent lane is free.
The lane change might be initiated although
th e adjacent lane is not free. #
Before changing lanes, make sure that
th e neighbouring lane is free and there is
no danger toother road users. #
Monitor the lane change. &
W
WARNING
ARNING Risk of accident if Lane Change
Assist unexpectedly stops functioning
If th e system limitations for Lane Change
Assist ha vebeen reached, there is no guaran-
te eth at the system will remain active.
Lane Change Assist cannot then assist youby
applying steering torque. #
Alwa ys monitor the lane change and
ke ep your hands on the steering wheel.
Obser vethe tra1c conditions and steer
and/or brake if necessar y. Syst
Syst
em limits
em limits
The system may be impaired or may not function
in thefo llowing instances:
R There is poor visibility, e.g. due tosno w,rain,
fo g, heavy spr ay,gr eatly varying light condi-
tions or strong shadow s onthe car riag ewa y. Driving and parking
289 289

R
There is glare, e.g. from oncoming tra1c,
di re ct sunlight or re0ections.
R Due toinsu1cient illumination of thero ad, or
if th eex terior lighting indicates a malfunction.
R The windscreen is dirty, misted up, damaged
or co vered in the vicinity of the camera, e.g.
by a stic ker.
R The sensors are damaged, co vered or dirty.
R No, or se veral, unclear lane markings are pres-
ent for one lane, or the markings change
qu ickl y,forex ample, in a construction area or
junctions.
R The system does not de tect a suitable road,
fo rex ample, in tight bends or shortly aTer a
slip road.
R The lane markings are wornawa y,dark or co v-
ered up, e.g. bydirt or sno w.
R Ifth e distance totheve hicle in front is too
short and thus the lane markings cannot be
de tected.
R There are obs tacles on the lane or projecting
out into the lane, such as object mar kers.
R When the tyre pressure is too lo w. Also obser
vethe system limits of Active Steering
Assist and the information on vehicle senso rsand
cameras in theve hicle Owner's Manual.
% The Active Lane Change Assist sensors adjust
automatically while a cer tain distance is being
driven aTer theve hicle has been deli vered.
Ac tive Lane Change Assist is una vailable or
only partially available during this teach-in
process, and no ar rows are displ ayed next to
th eØ Active Steering Assist symbol.
Selecting A Selecting A ctiv
ctive Lane Chang
e Lane Chang e Assist
e Assist
Multimedia system:
4 © 5
Settings 5
Assistance
5 Driving #
Select the function. A
A
ctiv
ctiv e Br
e Br ak
ake Assist
e Assist F
F
unction of A
unction of A ctiv
ctive Br
e Br ak
ake Assist
e Assist
Ac tive Brake Assist consists of thefo llowing func-
tions:
R Distance warning function
R Collision warning R
Autonomous braking function
R Situation-dependent braking assistance
R Evasive Steering Assist (countr y-speci/c)
Ac tive Brake Assist can help youto minimise the
ri sk of a collision with vehicles, cyclists or pedes-
trians or toreduce the e.ects of such a collision.
If Ac tive Brake Assist has de tected a risk of colli-
sion, a warning tone sounds and theL dis-
ta nce warning lamp lights up. In
theAssistance menu, an insu1cient distance
1 totheve hicle in front is displ ayed in red. If you
fur ther reduce the distance, theve hicle in front is
also highlighted in red. When the system de tects a 290
290
Driving and parking

R
an obs tacle is no longer de tected in front of
yo ur vehicle
R
R eaction t
eaction t o oncoming r
o oncoming r oad users
oad users
Ac tive Brake Assist can also react todetected
oncoming road users:
R Reaction up tospeeds of appr oximately
100 km/h
R Warning for oncoming road users thro ugh
acoustic warning and warning lamp
R Autonomous braking application in order to
re duce the se verity of an accident
Ev
Ev asiv
asiv eSt
e St eer
eer ing Assist
ing Assist &
W
WARNING
ARNING Risk of accident despite Eva-
sive Steering Assist
Evasive Steering Assist cannot alw aysre cog-
nise objects or complex tra1c situations
clear ly.
Moreo ver,th e steering support pr ovided by
Evasive Steering Assist is not su1cient to
av oid a collision. #
Always pay careful attention tothe tra1c
situation; do not relyon Evasive Steering
Assist alone. #
Be prepared tobrake or swer veif neces-
sar y. #
End the support byactively steering in
non-critical situations. #
Drive at an appropriate speed if there
are pedestrians close tothe path of your
ve hicle. Evasive
Steering Assist has thefo llowing charac-
te ristics:
R Detection of pedestrians, cyclists and vehi-
cles.
R Assis tance thro ugh po wer-assis ted steering if
it de tects a swerving manoeuvre.
R Activation byan abrupt steering mo vement
during a swerving manoeuv re.
R Assistance during swerving and straighte ning
of theve hicle. R
Reaction from a speed of appr oximately
20 km/h up toa speed of appr oximately
110 km/h.
The steering support of Evasive Steering Assist
can be cancelled at any time bycounter steering.
Syst Syst em limits
em limits
Fu ll system per form ance is not yetavailable for a
short time aTer switching on theve hicle or aTer
driving o.. As long as the functions are restric ted,
th eÆ warning lamp can also be shown in the
driver's displa y.Depending on the environmental
conditions, it may take afew minutes before full
system per form ance is available.
If Ac tive Brake Assist is deactivated or the func-
tions are restric ted, e.g. due toactivation of
ano ther driving system, theê display message
appears in the driver's displa y.
If th e system is una vailable due todirty or dam-
aged sensors or due toafa ult, or if the functions
are restric ted, theÓ warning lamp appears in
th e driver's displa y. Driving and parking
293
293

The system may be impai
red or may not function,
particular lyin thefo llowing situations:
R In sno w,rain, fog, heavy spr ay, if there is glare,
in direct sunlight or in greatly varying light
conditions.
R Ifth e sensors are dirty, misted up, damaged or
co vered. (/ page 267)
R Ifth e sensors are impaired due tointer fere nce
from other radar sources, e.g. strong radar
re 0ections in multi-s tore y car par ks.
R If a loss of tyre pressure or a defecti vetyre
has been de tected and displa yed.
R In complex tra1c situations where objects
cannot alw ays be clear lyidenti/ed.
R If pedestrians, cyclists or vehicles mo ve
qu ickly into the sensor de tection range.
R Ifro ad users are hidden by other objects or
are located close toother objects.
R Ifth e typical outline of a pedestrian or cyclist
cannot be distinguished from the backg round.
R If a pedestrian or cyclist is not de tected as
such, e.g. due tospecial clo thing or other
objects. R
Ifth e driver's seat belt is not fastened.
R On bends wi tha tight radius.
Se Se tting A
tting A ctiv
ctive Br
e Br ak
ake Assist
e Assist
R
R eq
equir uir ements:
ements:
R The vehicle is switched on.
Multimedia system: 4 © 5
Settings 5
Assistance
5 Avoid collision 5
Active Brake Assist #
Select the desired setting.
Deactiv
Deactiv ating A
ating Activ
ctive Br
e Br ak
ake Assist
e Assist
% It is recommended that you alw ays lea ve
Ac tive Brake Assist acti vated. #
Select Off.
The distance warning function, the autono-
mous braking function and Evasive Steering
Assist are deactivated.
The system is switched on again the next time
th eve hicle is star ted.
% IfAc tive Brake Assist is deactivated, theæ
symbol appears in the status bar of the driv-
er's displa y. T T
r
ra1c
a1c Sign Assist
Sign Assist F
F
unction of
unction of Tr
Tra1c
a1c Sign Assist
Sign Assist
% This function is available on demand
(/ page 26).
Tr a1c Sign Assist de tects tra1c signs with the
multifunction camera and compares this with
information in the digital navigation map. It assists
yo uby displaying de tected speed limits and over-
ta king restrictions in the driver's display and in
th e head-up displa y.The system can issue a warn-
ing when youex ceed the maximum permissible
speed.
In some countries, the system can pr ovide you
with fu rther functions and can warnyou when you
are approaching pedestrian crossings or when
yo u are about todrive past stop signs or red lights
unintentionall y.
The camera also de tects and anal yses tra1c
signs with a restriction indicated byan additional
sign (e.g. when wet).
Tr a1c Sign Assist portr ays only selected signs in
th e driver's displa y.Ac tual tra1c signs and speed
limits ha vepriority over tra1c signs and speed
limits shown in the driver's displa y.294 294
Driving and parking

A
A
ctiv
ctiv ating/deactiv
ating/deactiv ating A
ating Activ
ctive Blind Spo
e Blind Spo t Assist
t Assist
Multimedia system:
4 © 5
Settings 5
Assistance
5 Avoid contact 5
Active Blind Spot Assist #
Select Active Blind Spot Assist .#
Select OnorOff . A
A
ctiv
ctiv e Lane K
e Lane K eeping Assist
eeping Assist F
F
unction of A
unction of A ctiv
ctive Lane K
e Lane K eeping Assist
eeping Assist
Ac tive Lane Keeping Assist monitors the area in
front of your vehicle bymeans of the multifunction
camera (/ page 267) and can warnyou before
yo u lea veyour lane unintentionall y.The system
can guide you back into your lane thro ugh a
course-cor recting steering inter vention and addi-
tionally warnsyo u with vibration pulses in the
stee ring wheel. Active Lane Keeping Assist is
av ailable in the speed range between 60 km/h
and 200 km/h.
The system can inter vene in thefo llowing situa-
tions:
R Active Lane Keeping Assist de tects a lane
marking. R
One of your front wheels goes over a lane
marking.
If yo u activate the turn signal indicator, a steering
inter vention does not occur on the cor responding
side.
If th e system de tects an obs tacle, such as ano ther
ve hicle in the adjacent lane, a steering inter ven-
tion occurs rega rdless of the turn signal indicator.
If yo u lea vethe lane without activating the turn
signal indicator, but danger of a collision with a
moving obstacle is de tected in your lane, a steer-
ing inter vention does not occur. Display
1will appear in the driver's display and a
wa rning tone will sound in thefo llowing situations:
R A steering inter vention byActive Lane Keeping
Assist lasts longer than appr oximately ten sec-
onds.
R The system ca rries out two or more steering
inter ventions within appro ximatelythree
minutes without any steering inter vention from
th e driver.
In theAc tive Lane Keeping Assist settings, you
can set the sensitivity of the system and set the
le ve l of support. Additionall y,yo u can set whe ther
th e system should react todiscontinuous lane
markings or only continuous lane markings
(/ page 304).
S S t
tatus display
atus display s f
s for A
or A ctiv
ctive Lane K
e Lane K eeping Assist
eeping Assist
ï Whit
White:
e:Ac tive Lane Keeping Assist is deac-
tivated.
ï Y
Yellow
ellow :
:th ere is a malfunction. Please also
obser vethe display messages.
ð Grey
Gr ey:
:Ac tive Lane Keeping Assist is activa-
te d, but not operating. 302
302
Driving and parking

ð
Gr
Green:
een: Active Lane Keeping Assist is acti-
va ted and operating. If the system is
operational on only one side, the lane
marking is shown in green on the cor re-
sponding side.
ð R
Red:
ed: Active Lane Keeping Assist has gui-
ded you back into your lane with a course-
cor recting steering inter vention. The sta-
tus display will 0ash if there is also a hap-
tic warning in the steering wheel. The lane
marking is shown in red only on the side
fo r which there is a warning.
V
V ehicles wit
ehicles wit hout Dr
hout Driving Assist
iving Assist ance P
ance Pack-
ac k-
ag
ag e:
e: if bo thlane markings are simultane-
ously shown in red in the status displa y,
Ac tive Lane Keeping Assist has initiated an
emer gency stop (/ page 286). A
A
ctiv
ctiv e Lane Chang
e Lane Chang e Assis
e Assist displat displa y in t
y in the "Assis-
he "Assis-
t
t ance" menu
ance" menu If
th e front wheel of theve hicle drives over a
de tected lane marking, this will be highlighted red
in theAssistance menu inthe driver's displa y.
% V
Vehicles wit
ehicles wit h activ
h active ambient lighting:
e ambient lighting: ifWarn-
ing assistance is activated,theAc tive Lane
Ke eping Assist warning is also accompanied
by ambient lighting (/ page 179). Syst
Syst
em limits
em limits
In thefo llowing situations, no lane-cor recting
steering inter vention occurs but rather a warning
in the steering wheel, depending on the situation:
R You clear lyand actively steer, brake or accel-
erate.
R If a driving saf ety sy stem inter venes, such as
ESP ®
,Ac tive Brake Assist or Active Blind Spot
Assist.
R You ha veadop ted a sporty driving style with
high cornering speeds or high rates of acceler-
ation.
R When ESP ®
is deacti vated.
R If transport equipment, forex ample a trailer or
bicycle rack , is attached tothe trailer hitch
and the electrical connection has been cor-
re ctly es tablished.
R If a loss of tyre pressure or a defective tyre
has been de tected and displa yed. Driving and parking
303 303

%
This function must be activated in vehicles
without Driving Assis tance Package, so that
Emer gency Stop Assist is fully available.
Fu rther information on Emer gency Stop Assist
(/ page 286) AIRMA
AIRMA
TIC
TIC F
F
unction of AIRMA
unction of AIRMA TIC
TIC
AIRMATIC is an air suspension system with varia-
ble damping for impr oved driving comfort. The all-
ro und le vel control system ensures the best possi-
ble suspension and constant ground clearance,
ev en with a laden vehicle. When driving at speed,
th eve hicle is lo wered automatically toimpr ove
driving saf ety and toreduce fuel consum ption.
Yo u also ha vethe option of manually adjusting the
ve hicle le vel.
AIRMATIC includes thefo llowing components and
functions:
R air suspension with automatic all-round le vel
cont rol
R speed-dependent lo wering toreduce fuel con-
sum ption R
increased vehicle le velfo rgr eater ground
clearance, selected via the multimedia system
R ADS PLUS (Adaptive Damping System with
constant damping forc e adjustment)
Suspension se Suspension se tting depending on t
tting depending on t he dr
he driv
ive pr
e pr o-
o-
gr
gr am
am
Drive prog ram C andB:
R The suspension setting is /rmer.
R The vehicle is set tolow le vel -1.
R The vehicle is lo weredto low le vel -2 when
driving at speeds abo ve120 km/h.
R When driving at speeds below 80 km/h, the
ve hicle is raised again tolow le vel -1.
Drive prog ram A and;:
R The suspension setting is comfor table.
R The vehicle is set tothe normal le vel.
R The vehicle is lo weredto low le vel -1 when
driving at speeds abo ve120 km/h.
R The vehicle is lo weredto low le vel -2 when
driving at speeds abo ve160 km/h. R
When driving at speeds below 120 km/h, the
ve hicle is raised again tolow le vel -1.
R When driving at speeds below 80 km/h, the
ve hicle is raised again tothe normal le vel.
% Oper
Oper ation wit
ation wit h a tr
h a trailer or bicy
ailer or bicy cle r
cle rac
ack:
k: if
transport equipment, such as a trailer or a
bicycle rack , is attached tothe trailer hitch
and the electrical connection has been cor-
re ctly es tablished, theve hicle remains at nor-
mal le vel ir respecti veof speed or the drive
prog ram selected.
Se Se tting t
tting t he v
he vehicle lev
ehicle lev el
el &
W
WARNING
ARNING Risk of accident because vehi-
cle le vel is too high
Driving characteristics may be impaired.
The vehicle can driT outwards, forex ample,
when steering or cornering. #
Choose a vehicle le vel which is suited to
th e driving style and thero ad sur face
conditions. Driving and parking
305
305

R
A andN: ROAD SURF ACE SCAN is
active.
R N: the cur veinclination function is active.
% Oper
Oper ation wit
ation wit h a tr
h a trailer or bicy
ailer or bicy cle r
cle rac
ack:
k: ifthe
electrical connection has been cor rectly
es tablished, theve hicle, ir respecti veof speed
or the drive prog ram selected, is not automat-
ically lo wered or raised but rather remains at
normal le vel.
F
F unction of RO
unction of ROAD SURFA
AD SURFA CE SC
CE SCAN
AN
% This function is not available in all countries.
The ROAD SURF ACE SCAN function monitors the
ro ad in front of your vehicle using a multifunction
camera (/ page 267).ROAD SURF ACE SCAN
de tects une venness in thero ad sur face, e.g.
bumps, before theve hicle drives overth em. Chas-
sis mo vements are reduced and driving comfort is
increased.
RO AD SURF ACE SCAN is automatically activated
if th efo llowing conditions are met:
R Drive prog ram ; is not selected.
R Noraised vehicle le vel is set. R
You are driving at a speed between 7 km/h
and 180 km/h.
Syst Syst em limits
em limits
RO AD SURF ACE SCAN can be impaired in thefo l-
lowing situations or can stop functioning:
R Ifth e car riag ewa y is insu1ciently lit, e.g. at
night.
R In sno w,rain, fog, heavy spr ay, if there is glare,
in direct sunlight or in greatly varying light
conditions.
R Ifth e windscreen in the area of multifunction
camera is dirty, misted up, damaged or co v-
ered.
R Ifth ero ad sur face has no optic stru cture or
re 0ects light.
R Ifyo u are driving too close totheve hicle in
front.
R If sections of thero ute ha veave ry small
ra dius of cur vature.
R During abrupt driving manoeuvres, e.g. heavy
braking or sudden acceleration. Obser
vethe no tes on cleaning the multifunction
camera (/ page 433).
Se Se tting t
tting t he v
he vehicle lev
ehicle lev el
el &
W
WARNING
ARNING Risk of accident because vehi-
cle le vel is too high
Driving characteristics may be impaired.
The vehicle can driT outwards, forex ample,
when steering or cornering. #
Choose a vehicle le vel which is suited to
th e driving style and thero ad sur face
conditions. &
W
WARNING
ARNING Risk of ent rapment from vehi-
cle lo wering
When lo wering theve hicle, other people could
become trapped if their limbs are between the
ve hicle body and the tyres or underneath the
ve hicle. #
Make sure no one is underneath the
ve hicle or in the immediate vicinity of the308
308
Driving and parking