2021 MERCEDES-BENZ S-CLASS SALOON LONG lane assist

If
th e system de tects that the driver has not
steered theve hicle for a considerable period of
time or has remo vedth eir hands from the steering
wheel, visual warning 1 is issued. If the driver
still does not steer theve hicle, or gives no con/r-
mation tothe system, a warning tone sounds in
addition tothe visual warning message.
Also obser vethe inst ructions on the contact
de tection of Active Steering Assist (/ page 284).
Ac tive Emer gency Stop Assist issues thefo llowing
wa rnings in order:
R Display message 1appears in the driver's
displa y. R
In addition todisplay 1awa rning tone
sounds.
R The Beginning emergency stop message
appears in the driver's displa y,a continuous
wa rning tone sounds, theve hicle no lon ger
accelerates, and there is a slight, repeated
te nsioning of the seat belt.
R The vehicle speed is reduced in increments
until it is at a standstill. Sharp brake impulses
are also produced.
Depending on the countr y,a lane change tothe
adjacent right-hand lane is carr ied out, if possible.
% It is only possible tochange across one lane
and only into theright-hand lane, and not
onto the hard shoulder.
When automatic braking is initiated, Active Dis-
ta nce Assist DISTRONIC is deactivated. Depend-
ing on the countr y,the hazard warning light sys-
te m is switched on.
When theve hicle is stationar y,thefo llowing
actions are car ried out:
R The vehicle is secured with the electric par k-
ing brake. R
The vehicle is unloc ked.
R If possible, an emer gency call is placed tothe
Mercedes-Benz emerg ency call centre.
Before automatic braking is initiated, you can can-
cel Active Emer gency Stop Assist bystee ring.
Yo u can cancel the inter vention byActive Emer-
ge ncy Stop Assist aTer automatic braking is initi-
ated byone of thefo llowing actions:
R Accelerating or braking: the emer gency stop is
cancelled, but thewa rning message ,wa rning
to ne and po wer steering remain active
R Steering: po wer-assis ted steering is cancelled,
th ewa rning message andwarning tone remain
active and theve hicle continues tobe braked
% Active Emer gency Stop Assist can initiate an
emer gency stop a maximum of thre e times
within one driving cycle. Subsequentl y,Ac tive
St eering Assist and Active Emer gency Stop
Assist are deactivated forth at driving cycle.
Syst Syst em limits
em limits
If Ac tive Lane Keeping Assist does not de tect lane
markings, Active Emer gency Stop Assist is not
active. Driving and parking
287
287

Fo
rth e de tection of vehicles and other obs tacles,
obser vethe system limits of thefo llowing func-
tions:
R Active Distance Assist DISTRONIC
(/ page 276)
R Active Steering Assist (/ page 284)
R Active Lane Change Assist (/ page 288)A
A
ctiv
ctiv e Lane Chang
e Lane Chang e Assist
e AssistF
F
unction of A
unction of A ctiv
ctive Lane Chang
e Lane Chang e Assist
e Assist
Ac tive Lane Change Assist supports the driver
when changing lanes and is activated byindicat-
ing brie0y.
Ac tive Lane Change Assist is only an aid and not a
substitute foryo ur attention. It is essential that
yo u obser vethe no tes on driving systems and
yo ur responsibility in theve hicle Owner's Manual;
yo u may otherwise failto recognise dangers.
The following conditions must be ful/lled for a
lane change:
R You are on a mo torw ay or high-speed major
ro ad. R
The vehicle speed is between appr oximately
80 km/h and 180 km/h.
R The neighbouring lane is separated bya bro-
ke n lane ma rking.
R Novehicle or obs tacle is de tected in the adja-
cent lane.
R Since the last time theve hicle was star ted,
th e sensors ha vedetected a vehicle at a suita-
ble dis tance behind your vehicle.
R Active Lane Change Assist is selected in the
multimedia system.
R Active Distance Assist DISTRONIC and Active
St eering Assist are activated on mo torw ays.
The system is not available and must be reactiva-
te d in thefo llowing situations:
R Active Distance Assist DISTRONIC and Active
St eering Assist werealready activated before
entering the mo torw ay.
R The system brie0y does not de tect thero ad
yo u are on as a mo torw ay or a mo torw ay-like
road, e.g. on a mo torw ay junction. As soon as
Active Lane Change Assist de tects a
suitable road, you can reactivate it with J,
M orN.
Dr Dr iv
iver displa
er displa y in t
y in the
heAssistance menu
menu 1
Green ar row:lanechange initiated
2 Red ar row: lanechange cancelled 288
288
Driving and parking

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
Atleast one of there d tra1c lights de tected is
on the front passenger side beside theve hi-
cle's own lane.
R The tra1c lights are in thefo llowing sequence
(from topto bottom): red, yello w, green.
% Ifth e function is available, you can activate or
deactivate thewa rnings at pedestrian cross-
ings, stop signs and red lights in theTra1c
Sign Assist menu under Further warnings
(/ page 297).
Syst
Syst em limits
em limits
The system may be impaired or may not function
particular lyin thefo llowing situations:
R If visibility is poor, e.g. due toinsu1cient illu-
mination of thero ad, highly variable shade
conditions, rain, sno w,fog, swirling dust or
heavy spr ay.
R Ifth ere is glare, e.g. from oncoming tra1c,
direct sunlight or re0ections.
R Ifth e windscreen in the area of the multifunc-
tion camera is dirty, or if the camera is misted
up, damaged or co vered. R
If tra1c signs are di1cult todetect, e.g.
because they are dirty, co vered, faded, co v-
ered with ice, damaged, badly positioned,
poor lylit or twisted.
R Active tra1c signs with LED displa ysmay not
be de tected cor rectly or at all due to technical
fa ctors, such as transmission frequency.
R Ifth e information on the navigation system's
digital map is incor rect, incomple teor out of
date.
R If signs or thero ad la yout is ambiguous, e.g.
tra1c signs in roadwor ks, at exits and ramp s,
in neighbou ring lanes or parallel roads.
R If signs do not conform tothe standard.
R If signs or road la youts are speci/c tothe
count ryand deviate from thero ute guidance
in the navigation system, e.g. at or be yond
construction sites.
R ATer sharp turns and tight bends, when tra1c
signs are outside the camera's /eld of vision.
R Ifyo uove rtake vehicles with tra1c signs
which are a1xed or attached tothem. R
Ifyo u are using transport equipment secured
to theve hicle with a trailer coupling, such as a
bicycle rack ,re strictions for car/trailer combi-
nations may be considered valid if applicable.
Se Se tting
tting Tr
Tra1c
a1c Sign Assist
Sign Assist
Multimedia system:
4 © 5
Settings 5
Assistance
5 Assistance 5
Traffic Sign Assist
A
A ctiv
ctiv ating or deactiv
ating or deactiv ating t
ating the speed w
he speed w ar
arning
ning #
Activate or deactivate Speed limit warning .
A
A ctiv
ctiv ating or deactiv
ating or deactiv ating furt
ating further functions of Tr
her functions of Traf-
af-
f
f ic Sign Assist
ic Sign Assist #
Switch Further warnings orAdditional warn-
ing tone on or o..
Se
Se tting t
tting t he w
he war
arning t
ning t hr
hreshold
eshold
This value de term ines the speed at which a warn-
ing is issued when exceeded. #
Set the desired speed under Warning thresh-
old. Driving and parking
297
297

T
T
r
ra1c
a1c light view
light view Inf
Inf
or
ormation about t
mation about t he
hetr
tra1c
a1c light view
light view
The tra1c light view supports the driver when
wa iting in front of a red light bydisplaying the
camera image on the central displa y.The camera
ima geis displa yed when the driver is the /r stvehi-
cle in front of there d light and faded out when the
ve hicle drives o..
Displa
Displa ying
yingtr
tra1c
a1c light view
light view
R
R eq
eq uir
uir ements:
ements:
R The Traffic light view option is switched on .
R A tra1c light view is available.
Multimedia system: 4 © 5
Settings 5
Assistance
5 Assistance 5
Traffic light view
% This function is not available in all countries.
If th eve hicle is in /rst position at a tra1c light,
th e camera image with tra1c light view is shown
on the central displa y.
When theve hicle pulls away,th e camera image is
fa ded out. #
Activate Dor deactivate ETraffic
light view.
Using ot
Using other av
her available functions
ailable functions #
Select Z. #
Select On request orAutomatic.
If On request is set and a tra1c light view is
av ailable, thePlease tap here for traffic light
view. message is displa yed. The camera image
is shown aTer con/ rmation of the message.
When Automatic is set,the camera image is
automatically displa yed when the tra1c light
view is available. A
A
ctiv
ctiv e Blind Spo
e Blind Spo t Assis
t Assist wit
t with e
h exit w
xit w ar
arning
ning F
F
unction of A
unction of A ctiv
ctive Blind Spo
e Blind Spo t Assis
t Assist wit
t with e
h exit
xit
w
w ar
ar ning
ning
Ac tive Blind Spot Assist uses radar sensors to
monitor the area up to40 m behind and 3 m next
to your vehicle.
The system can de tect vehicles tr avelling from
speeds of appr oximately 12 km/h and issue a
wa rning if they mo veinto the monitoring range. St
atus displ ayinthe driver's display
¸ Grey
Gr ey:
:th e system is activated but inopera-
tive.
¸ Gr
Green:
een: the system is activated and opera-
tional. Driver display in
theAssistance menu
If a vehicle is de tected within the monitoring
ra nge, there dwa rning lamp lights up in the cor re-
sponding outside mir ror.In the Assistance menu,
th e lamp in outside mir ror1 also lights up red,
and the lane in which theve hicle is de tected is
hatched out. 298
298
Driving and parking

%
V
Vehicles wit
ehicles wit h ambient lighting or activ
h ambient lighting or activ e ambi-
e ambi-
ent lighting:
ent lighting: theWarning assistance ofthe
ambient lighting can be activated and deacti-
va ted (/ page 179).
% The warning assistance can di.er depending
on the equipment and may vary according to
th e setting.
The exitwa rning is only available when Active
Blind Spot Assist is activa ted and up toa maxi-
mum of thre e minutes aTer the ignition has been
switched o.. The exitwa rning is no longer availa-
ble once thewa rning lamp in the outside mir ror
0ashes thre e times.
The exitwa rning is only an aid and not a substi-
tute forth e attention of vehicle occupants. The
re sponsibility for opening and closing the doors
and for leaving theve hicle remains with theve hi-
cle occupants.
Syst Syst em limits
em limits
Ac tive Blind Spot Assist may be limited in thefo l-
lowing situations, in particular:
R ifth ere is dirt on the sensors or the sensors
are obscured R
in poor visibility, e.g. due tofog, heavy rain or
snow
R ifth ere are nar row vehicles, e.g. bicycles or
mo torbikes
R ifth ero ad has very wide or nar row lanes
R ifve hicles are not driving in the middle of their
lane
Wa rnings may be issued in er ror when driving
close tocrash bar riers or similar continuous lane
borders. Alw ays make sure that there is su1cient
distance tothe side forot her tra1c or obs tacles.
Wa rnings may be inter rupted when driving along-
side long vehicles, forex ample lor ries, for a pro-
longed time.
Ac tive Blind Spot Assist is not operational when
re ve rsege ar is engaged.
Ac tive Blind Spot Assist is not operational if trans-
port equipment, forex ample a trailer or bicycle
ra ck , is attached tothe trailer hitch and the elec-
trical connection has been cor rectly es tablished. Ad
ditionall y,theex itwa rning may be limited in the
fo llowing situations:
R when the sensors are co veredby adjacent
ve hicles in nar row parking spaces
R when people approach theve hicle
R intheev ent of stationary or slo wlymoving
objects
F F unction of t
unction of t he br
he brak
ake application of A
e application of A ctiv
ctive Blind
e Blind
Spo
Spo t Assist
t Assist
If Ac tive Blind Spot Assist de tects a risk of a side
impact in the monitoring range, a cours e-correct-
ing brake application is car ried out. This is
designed tohelp youavo id a collision.
The course-cor recting brake application is availa-
ble in the speed range between appro ximately
30 km/h and 200 km/h. &
W
WARNING
ARNING Risk of accident despi tebrake
application of Active Blind Spot Assist
A course-cor recting brake application cann ot
alw ays pr event a collision. #
Always steer, brake or accelerate your-
self, especially if Active Blind Spot Assist 300
300
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