2020 MERCEDES-BENZ S-CLASS SALOON LONG steering

th
e driver still does not steer theve hicle, or
gives no confirmation tothe sy stem, a warning
to ne sounds in addition tothe visual warning
message.
If th e driver does not react tothis wa rning for a
considerable period, an emergency stop is initi‐
ated (/ page 239).
The warning is not issued or is stopped as soon
as the sy stem de tects that the driver has
to uched thesteering wheel.
To uch de tection may be limited or inoperati vein
th efo llowing situations:
R The driver is wearing glov es.
R There is a steering wheel co ver on thesteer‐
ing wheel.
If Ac tive Steering Assist de tects that a sy stem
limit has been reached, a visual warning is
issued and a warning tone sounds.
Obser vethe no tes on driving sy stems and your
re sponsibility; you may otherwise failto recog‐
nise dangers (/ page 219). Sy
stem limits
Ac tive Steering Assist has a limited steering tor‐
qu efo r lateral guidance. In some cases, the
st eering inter vention is not su fficient tokeep the
ve hicle in the lane.
The sy stem may be impaired or may not function
in thefo llowing ins tances:
R The reis poor visibilit y,e.g. due tosno w,rain,
fo g, heavy spr ay,greatly varying light condi‐
tions or strong shado wsonthe car riag ewa y.
R There is glare, e.g. from oncoming traf fic,
di re ct sunlight or reflections.
R Insuf ficient road illumination.
R The windsc reen is dirty, mis ted up, damaged
or co vered in the vicinity of the camera, e.g.
by ast icke r.
R No, or se veral, unclear lane markings are
present for one lane, or the markings change
qu ickl y,forex ample, in a con stru ction area
or junctions.
R The lane markings are wornaw ay, dark or
co vered up, e.g. bydirt or sno w. R
Ifth e dis tance totheve hicle in front is too
short and thus the lane markings cann otbe
de tected.
R The road is nar rowand winding.
R There are obs tacles on the lane or projecting
out into the lane, such as object mar kers.
R If transport equipment, forex ample a trailer
or bicycle rack , is attached tothe trailer
hitch and the electrical connection has been
cor rectly es tablished.
The sy stem does not pr ovide assis tance in the
fo llowing conditions:
R Onvery tight bends and when turning.
R When crossing junctions.
R Atroundabouts or tollst ations.
R When actively changing lane without swit ch‐
ing on the turn signal indicator.
R When the tyre pressure is too lo w. 238
Driving and parking

&
WARNING Risk of accident if Active
St eering Assist unexpectedly stops func‐
tioning
If th e sy stem limits of Active Steering Assist
are reached there is no guarantee that the
sy stem will remain active or will keep the
ve hicle in lane. #
Alw ayske ep your hands on thesteering
wheel and obser vethe tra ffic carefull y. #
Alw aysst eer theve hicle paying atten‐
tion totraf fic conditions. &
WARNING Risk of accident if Active
St eering Assist unexpectedly inter venes
The de tection of lane markings and objects
may malfunction and cause unexpected
st eering inter ventions. #
Steer according totraf fic conditions. Ac
tivating/deactivating Active Steering
Assist
Re quirements:
R ESP ®
is activated, but is not inter vening.
R Active Dis tance Assi stDISTRONIC is acti va‐
te d.
Multimedia sy stem:
4 © 5
Settings 5
Assistance
5 Driving #
Select ØAct. Steering Asst . Fu
nction of Active Eme rgency Stop Assist Ac
tive Emergency Stop Assist uses touch sen‐
sors tomonitor whe ther the driver holds the
st eering wheel and initiates an emer gency stop if
necessar y.
If Ac tive Steering Assist is deactivated, the
accelerator and brake pedal are monitored as
we ll as thesteering wheel. A warning is issued
when thesteering wheel is not being held or
when a pedal is not depressed, and theve hicle
is in danger of leaving the lane. If
th e sy stem de tects that the driver has not
st eered theve hicle for a considerable period of
time or has remo vedth eir hands from thesteer‐
ing wheel, visual warning 1is issued. If the
driver still does not steer theve hicle, or gives no
confirmation tothe sy stem, a warning tone
sounds in addition tothe visual warning mes‐
sage.
Also obser vethe instructions on the conta ct
de tection of Active Steering Assist
(/ page 237). Driving and parking
239

Ac
tive Emergency Stop Assist issues thefo llow‐
ing warnings in order:
R Display message 1appears in the driver
displa y.
R In addition todisplay 1awa rning tone
sounds.
R The Beginning emergency stop message
appears in the driver displa y,a continuous
wa rning tone sounds, theve hicle no longer
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 impul‐
ses are also produced.
Depending on the count ry, a lane change tothe
adjacent right-hand lane is car ried out, if possi‐
ble.
% It is only possible tochange across one lane
and on ly intotheright-hand lane, and not
onto the hard shoulder.
Depending on the count ry,th e hazard warning
lights are switched on when automatic braking is
initiated. When
theve hicle is stationar y,thefo llowing
actions are car ried out:
R The vehicle is secured with the electric park‐
ing brake.
R Active Dis tance Assi stDISTRONIC is ended
R The vehicle is unloc ked.
R If possible, an emer gency call is placed to
th e Mercedes-Benz emer gency call centre
Before au tomatic braking is initia ted, you can
cancel Active Emergency Stop Assist bysteer‐
ing.
Yo u can cancel the inter vention byActive Emer‐
ge ncy Stop Assist af ter auto matic braking is ini‐
tiated byone of thefo llowing actions:
R Accelerating or braking: the emer gency stop
is cancelled, but thewa rning message, warn‐
ing tone and po werst eering remain active
R Steering: po wer-assis tedsteering is cancel‐
led, thewa rning message and warning tone
re main active and theve hicle continues tobe
braked %
Active Emergency Stop Assist can initiate an
emer gency stop a maximum of thre e times
within one ignition cycle. Af terth is Ac tive
St eering Assist and Active Emergency Stop
Assist are deactivated forth at ignition cycle.
Sy stem limits
If Ac tive Lane Keeping Assist does not de tect
lane markings, Active Emergency Stop Assist is
not active.
Fo rth e de tection of vehicles and other obs ta‐
cles, obser vethe sy stem limits of thefo llowing
functions:
R Active Dis tance Assi stDISTRONIC
(/ page 229)
R Active Steering Assist (/ page 237)
R Active Lane Change Assi st (/ page 240) Ac
tive Lane Change Assi st Fu
nction of Active Lane Change Assi st
Ac tive Lane Change Assi stsupports the driver
when changing lanes and is activated byindicat‐
ing briefly. 240
Driving and pa rking

play appears along with gr
eyarrow s in the driver
displa y.
If no vehicle or obs tacle is de tected in the adja‐
cent lane and a lane change is permit ted, the
lane change begins af terth e driver has indicated
brief ly. The lane change is shown tothe driver
with a flashing greenarro w next tothe±
st eering 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,forex ample, also
appears.
Ac tive Lange Change Assi stcan 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
st eering wheel.
R The driver steers with too much forc e or in
th e opposite direction.
R The driver mo vesth e turn signal indicator in
th e opposite direction. R
Active Dis tance Assi stDISTRONIC or Active
St eering Assist is deactivated.
R The vehicle cannot make the lane change as
planned.
Cancellation of Active Lane Change Assi stis 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 onthe
driver displa y.
R In cer tain circums tances a warning tone
sounds. &
WARNING Risk of accident when chang‐
ing lane toan occupied adjacent lane
Lane Chan geAssi stcannot al ways 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 to otherroad users. #
Monitor the lane change. &
WARNING Risk of accident if Lane
Change Assi stunexpectedly stops func‐
tioning
If th e sy stem limitations for Lane Change
Assist ha vebeen reached, there is no guar‐
antee that the sy stem will remain active.
Lane Change Assist cannot then assist you
by applying steering torque. #
Alw ays monitor the lane change and
ke ep your hands on thesteering wheel.
Obser vethe tra ffic conditions and steer
and/or brake if necessar y. Sy
stem limits
The sy stem limitations of Active Steering Assist
apply toActive Lane Change Assi st
( / page 237).
The sy stem may also be impaired or may not
function in thefo llowing situations:
R The sensors are damaged, co vered or dirty
(/ page 220). 242
Driving and pa rking

R
The exterior lighting sho wsa defect.
R The sy stem does not de tect a suitable road,
fo rex ample, in tight bends or shortly af ter a
slip road.
R The vehicle is on a construction site.
% The Active Lane Change Assi stsensors
adjust automatically while a cer tain dis tance
is being driven af terth eve hicle has been
delivered. Active Lane Change Assi stis
una vailable or only partially available during
th is teach-in process, and no ar rows are dis‐
pla yed next totheØ Active Steering
Assist symbol.
Obser vethe no tes on driving sy stems and your
re sponsibility; you may otherwise failto recog‐
nise dangers (/ page 219).
Selecting Active Lane Change Assi st
Multimedia sy stem:
4 © 5
Settings 5
Assistance
5 Driving #
Select the function. Ac
tive Brake Assi st Fu
nction of Active Brake Assi st
Ac tive Brake Assi stconsi sts of thefo llowing
functions:
R Distance warning function
R Autonomous braking function
R Situation-dependent braking assi stance
R Evasive Steering Assist (count ry-specific)
Ac tive Brake Assi stcan help youto minimise the
ri sk of a collision with vehicles, cyclists or
pedestrians or toreduce the ef fects of su ch a
collision.
If Ac tive Brake Assi sthas de tected a risk of colli‐
sion, a warning tone sounds and theL dis‐
ta nce warning lamp lights up. In
theAssistance menu, an insuf ficient di stance
1 totheve hicle in front is displa yed in red. If
yo u fur ther reduce the dis tance, theve hicle in
front is also highlighted in red. When the sy stem
de tects a risk of collision, redra dar waves2
appear in front of theve hicle.
Ve hicles with PRE-SAFE ®
:depending on the
countr y,an additional haptic warning occurs in
th efo rm of slight, repeated tensioning of the
seat belt.
% Vehicles with active ambient lighting: if
Warning assistance is activated,theAc tive
Brake Assi stwa rning is also accompanied by
ambient lighting (/ page162). Driving and pa
rking 243

R
An ob stacle is no lon ger de tected in front of
yo ur vehicle.
Re action tooncoming road users
Ac tive Brake Assi stcan also react todetected
oncoming road users:
R Reaction up tospeeds of appr oximately
10 0 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
Evasi veSte ering Assist &
WARNING Risk of accident despi teEva‐
si ve Steering Assist
Evasive Steering Assist cann otalw aysre cog‐
nise objects or compl extraf fic situations
clear ly.
Moreo ver,th esteering support pr ovided by
Evasive Steering Assist is not suf ficient to
avo id a collision. #
Alw ays pay careful attention tothe traf‐
fi c situation; do not rely on Ev asive
St eering Assist alone. #
Be prepared tobrake or swer veif nec‐
essar y. #
End the support byactively steering in
non-critical situations. #
Drive at an appropriate speed if there
are pedestrians close tothe path of
yo ur vehicle. Evasive
Steering Assist has thefo llowing charac‐
te rist ics:
R Detection of pedestrians, cycli sts and vehi‐
cles.
R Assis tance thro ugh po wer-assis tedsteering if
it de tects a swerving manoeuvre.
R Activation byan abrupt steering mo vement
during a swerving manoeuvre.
R Assis tance du ring swerving and stra ightening
of theve hicle. R
Reaction from a speed of appr oximately
20 km/h up toa speed of appr oximately
11 0 km/h.
The steering support of Evasive Steering Assist
can be cancelled at any time bycounter steer‐
ing.
Sy stem limits
Fu ll sy stem per form ance is not available for a
fe w seconds af ter switching on the ignition or
af te r driving off.
If th e sy stem is una vailable or the functions are
re stricted, theÄ warning lamp appears in the
driver's displa y.
The sy stem may be impaired or may not func‐
tion, particular lyin thefo llowing situations:
R In sno w,rain, fog, heavy spr ay, if there is
gl are, in direct sunlight or in greatlyvarying
light conditions.
R Ifth e sensors are dirty, mis ted up, damaged
or co vered. (/ page 220)
R Ifth e sensors are impaired due tointer fer‐
ence from other radar sources, e.g. strong
ra dar reflections in multi-s torey car par ks. 246
Driving and pa rking

R
ESP ®
is deacti vated.
R A loss of tyre pressure or a defective tyre is
de tected.
R 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.
Ac tivating/deactivating Active Blind Spot
Assi st
Multimedia sy stem:
4 © 5
Settings 5
Assistance
5 Avoid collision 5
Active Blind Spot Assist #
Select Active Blind Spot Assist. #
Select OnorOff. Ac
tive Lane Keeping Assist Fu
nction of Active Lane Keeping Assist
Ac tive Lane Keeping Assist monitors the area in
front of your vehicle bymeans of the multifunc‐
tion camera (/ page 220) and can warnyou
before you lea veyour lane unin tentionally. The
sy stem can guide you back into your lane th
ro ugh a course-co rrecting steering inter ven‐
tion and additional lywa rnsyo u with vibration
pulses in thesteering wheel. Active Lane Keep‐
ing Assist is available in the speed range
between 60 km/h and 200 km/h.
The sy stem 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 steer‐
ing inter vention does not occur on the cor re‐
sponding side.
If th e sy stem de tects an obs tacle, su chas
ano ther vehicle in the adjacent lane, a steering
inter vention occu rsrega rdless of the turn signal
indicator. If you lea vethe lane without using the
turn signal indica tor,but an obs tacle is de tected
in your lane, a steering inter vention does not
occu r. Displ
ay1 will appear in the driver display and a
wa rning tone will sound in thefo llowing situa‐
tions:
R Asteering inter vention byActive Lane Keep‐
ing Assist lasts longer than appr oximately ten
seconds.
R The sy stem car ries out two or more steering
inter ventions wi thin appr oximately three
minutes without any steering inter vention
from the driver.
In theAc tive Lane Keeping Assist settings, you
can set the sensitivity of the sy stem and set the
le ve l of support. Additionally, you can set
whe ther the sy stem should react todiscontinu‐ Driving and parking
255

ous lane markings or only continuous lane mark‐
ings (/
page 257).
St atus displa ysforAc tive Lane Keeping
Assist
ï White:Ac tive Lane Keeping Assist is
deactivated.
ï Yello w: there is a malfunction. Please
also obser vethe display messages.
ð Grey:Ac tive Lane Keeping Assist is acti‐
va ted, but not operating.
ð Green: Active Lane Keeping Assist is
activated and operating. If the sy stem is
operational on only one side, the lane
marking is shown in green on the cor re‐
sponding side.
ð Red:Active Lane Keeping Assist has gui‐
ded you back into your lane with a
course-co rrecting steering inter vention.
The status display will flash if there is
also a haptic warning in thesteering
wheel. The lane marking is shown in red
only on the side for which there is a
wa rning. Ve
hicles without Driving Assistance
Pa ckage: if bothlane markings are
simultaneously shown in red in thest atus
displa y,Ac tive Lane Keeping Assist has
initiated an emer gency stop
(/ page 239).
Ac tive Lane Change Assi stdispl ayinthe
"Assistance" menu If
th e front wheel of theve hicle drives over a
de tected lane marking, this will be highligh ted
re d in theAssistance menu inthe driver's dis‐
pla y. %
Vehicles with active ambient lighting: if
Warning assistance is activated,theAc tive
Lane Keeping Assist warning is also accom‐
panied byambient lighting (/ page162).
Sy stem limits
In thefo llowing situations, no lane-cor recting
st eering inter vention occu rsbut rath er a warning
in thesteering wheel, depending on the situa‐
tion:
R You clear lyand actively steer, brake or accel‐
erate.
R If a driving saf ety sy stem inter venes, su chas
ESP ®
,Ac tive Brake Assi stor Active Blind
Spot Assi st.
R You ha veadop ted a sporty driving style with
high cornering speeds or high rates of accel‐
eration.
R When ESP ®
is deactivated.
R If transport equipment, forex ample a trailer
or bicycle rack , is attached tothe trailer
hitch and the electrical connection has been
cor rectly es tablished. 256
Driving and parking