2020 MERCEDES-BENZ S-CLASS SALOON LONG trailer

Deactivating
Active Di stance Assist
DISTRO NIC or the variable limi ter &
WARNING Risk of an accident due to
Ac tive Dis tance Assi stDISTRONIC being
acti vewhen you lea vethe driver's seat
If yo u lea vethe driver's seat while theve hicle
is being braked byActive Dis tance Assi st
DISTRONIC only, theve hicle can rollaw ay. #
Alw ays deactivate Active Dis tance
Assi stDISTRONIC and secure theve hi‐
cle topreve nt it from rolling away
before you lea vethe driver's seat. #
Press ±.
% Ifyo u brake, deactivate ESP ®
or if ESP ®
inter venes, Active Dis tance Assi st
DISTRONIC is deacti vated. The variable lim‐
iter is not deactivated.
Fu nction of Active Speed Limit Assi st
If speed limit change between 20 km/h and
13 0 km/h is de tected and the automatic adop‐
tion of speed limits is active, it will be automati‐ cally adop
ted as thestored speed
(/ page 236).
The driven speed is adjus ted when theve hicle is
le ve l with the traf fic sign at the latest. In the
case of signs indicating entry into an urban area,
th e speed is adap ted according tothe speed
permitted within the urban area. The speed limit
display in the driver display is alw ays updated
when theve hicle is le vel with the traf fic sign.
If yo u are driving on German mo torw ays and
th ere is no speed limit, the sy stem uses the
speed stored on an unlimited stre tch of road as
th ere commended speed. If you do not alter the
st ored speed on an unlimited stre tch of road, the
re commended speed is 130 km/h.
If Ac tive Dis tance Assi stDISTRONIC has been
put into passi vemode bypressing the accelera‐
to r pedal, only speed limits which are higher
th an the set speed are adop ted.
The maximum permissible speed does not take
th ero ad condition and cur rent we ather and traf‐
fi c conditions into account. Adjust your speed
accordin gly, when necessar y. Obser
vethe no tes on driving sy stems and your
re sponsibility; you may otherwise failto recog‐
nise dangers (/ page 219).
Sy stem limits
The sy stem limits of Traf fic Sign Assi stapply to
th e de tection of traf fic signs (/ page 247).
Speed limits bel ow20 km/h are not auto mati‐
cally adop tedby the sy stem as thestored speed.
Te mp orary speed restrictions (e.g. for a cer tain
time or due towe ather conditions) cannot be
proper ly detected bythe sy stem. The maximum
permissible speed applying toave hicle with a
trailer is not de tected bythe sy stem.
Ad just the speed in these situations. &
WARNING Risk of accident due toActive
Speed Limit Assi stadapting theve hicle's
speed
The speed adop tedby Active Speed Limit
Assi stmay be too high or incor rect in some
individual cases, su chas:
R at speed limits below 20 km/h 234
Driving and parking

R
inwe t conditions or in fog
R when towing a trailer #
Ensure that the driven speed complies
with traf fic re gulations. #
Adjust the driving speed tosuit cur rent
traf fic and weather conditions. Fu
nction of route-based speed adaptation
When Active Dis tance Assi stDISTRONIC is acti‐
va ted, theve hicle speed will be adap ted accord‐
ingly tothero ute events ahead. Depending on
th e drive prog ram selected, theve hicle negoti‐
ates a route event ahead in a fuel-s aving, com‐
fo rtable or dynamic manner. When thero ute
eve nt has been passed, theve hicle accelerates
again tothestored speed. The set dis tance to
th eve hicle in front, vehicles de tected ahead and
speed restrictions ahead are take n into account.
Ro ute-based speed adap tation can be acti vated
in the multimedia sy stem (/ page 236).
The following route events are take n into
account:
R Bends R
Roundabouts
R T-junctions
R Turns and exits
R Traf fic jams ahead (only wi thLive Traf fic )
Also, the speed is reduced if the turn signal indi‐
cator tochange lanes is swit ched on and one of
th efo llowing situations is de tected:
R Turning off at junctions
R Driving on slowing-down lanes
R Driving on lanes adjacent toslowing-down
lanes
The driver is responsible forch oosing theright
speed and observing other road users. This
applies in particular tojunctions, roundabouts
and traf fic lights, as route-based speed adap ta‐
tion does not brake theve hicle toast andstill.
If a cor responding route event is de tected while
ro ute guidance is active, thefirs t speed adjust‐
ment is car ried out automaticall y.Ifth e turn sig‐
nal indicator is switched on, the selected route is
confirmed and fur ther speed adjustment is acti‐
va ted. Speed adap
tation is cancelled in thefo llowing
cases:
R Ifth e turn signal indicator is switched off
before thero ute event and it is therefore
assumed that thero ute event is not releva nt
to the driver.
R Ifth e driver depresses the accelera tor or
brake pedal during the process.
Sy stem limits
Ro ute-based speed adaptation does not take
ri ght of wayre gulations into account. The driver
is responsible for complying with road traf fic
re gulations and driving at a suitable speed.
In dif ficult conditions, the speed selection made
by the sy stem may not alw ays be suitable:
R unclear roads
R road nar rowing
R varying maximum permissible speeds in indi‐
vidual lanes, forex ample at tollst ations
R wetro ad sur faces, snow or ice
R if transport equipment, forex ample a trailer
or bicycle rack , is attached tothe trailer Driving and parking
235

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

Tr
af fic Sign Assi stcan de tect following addi‐
tional signs 3and, if necessar y,anal ysethe
re leva nce of there strictions using other vehicle
sensors:
R inwe t conditions
R on slippe ryroad sur faces
R infog
R temp orary restrictions
R exits
R limits for car/trailer combinations
Tr af fic Sign Assi stalso uses data from the digital
st re et map in the navigation sy stem. Therefore,
when you lea veor enter a municipality or change
ro ads, on a mo torw ay ex it or slip road forex am‐
ple, or af teryo u turn at a junction, the display in
th e driver display can be updated without a traf‐
fi c sign having been de tected.
If Traf fic Sign Assi stcannot de term ine the cur‐
re ntly applicable maximum pe rmissible speed
(e.g. due tomissing signs), thefo llowing display
appears in the driver display: Tr
af fic Sign Assi stis not available in all coun‐
tries. If theve hicle is in a country where Traf fic
Sign Assi stis not suppor ted, this is displa yed
continuously.
% Also obser vethe information on display mes‐
sages in Traf fic Sign Assi st (/ page 492).
Wa rning when the maximum permissible
speed is exceeded
The sy stem can warnyou if you unin tentionally
exc eed the maximum permissible speed. Todo
th is, you can specify in the multimedia sy stem
by how much the maximum permissible speed
can be exceeded before a warning is issued. Yo u
can set thewa rning tovisual only (the traf fic
sign flashes thre e times in the driver display) or
visual and acoustic, including a warning tone.
Ad ditional functions of Traf fic Sign Assist
(count ry-specific)
Wa rning for no-entry signs: Traf fic Sign Assi st
can warnyou if you drive the wrong way down a section of
road, forex ample on mo torw ay slip
ro ads or one-w aystre ets.
Wa rning at pedestrian crossings: ifyou
approach pedestrian crossings, pr ovided that
pedestrians are in the danger zone or are moving
to wa rds it, Traf fic Sign Assi stcan warnyou up to
a speed of appr oximately 70 km/h.
Wa rning at stop signs: Traf fic Sign Assi stcan
wa rnyou up toa speed of appr oximately
70 km/h if you are about todrive past a stop
sign unintentionall y.Fo rth is to be possible, the
signs must be clear, forex ample if the sy stem
de tects more than one stop sign, or a stop sign
can be confirmed using the digital navigation
map. Nowarning can be issued if se veral dif fer‐
ent signs are de tected.
Wa rning at red lights: Traf fic Sign Assi stcan
wa rnyou up toa speed of appr oximately
70 km/h if you are about todrive thro ugh a red
light unin tentional ly.
The following conditions must be fulfilled:
R Several traf fic lights ha vebeen de tected.
R All traf fic lights de tected are red. Driving and parking
249

R
Atleast one of there d tra ffic lights de tected
is on the front passenger side beside the
ve hicle's own lane.
R The traf fic 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
crossings, stop signs and red lights in the
Tr af fic Sign Assi stmenu under Further warn-
ings (/page 250).
% The assi stance functions of DIGITAL LIGHT
can also warnyou of no-ent rysigns, stop
signs and red lights byprojecting a triangle
onto thero adw ay (/page 157).
Sy stem limits
The sy stem may be impaired or may not function
particular lyin thefo llowing situations:
R If visibility is poor, e.g. due toinsuf ficient illu‐
mination of thero ad, high lyvariable shade
conditions, rain, sno w,fog, swirling dust or
heavy spr ay. R
Ifth ere is glare, e.g. from oncoming traf fic,
di re ct sunlight or reflections.
R Ifth e windscreen in the area of the multi‐
function camera is dirty, or if the camera is
mis ted up, damaged or co vered.
R If tra ffic signs are dif ficult todetect, e.g. due
to dirt, sno w,ice, insuf ficient lighting or driv‐
ing too close totheve hicle in front, or
because they are co vered, faded, damaged,
badly positioned or twis ted.
R Active traf fic signs wi thLED display s may not
be de tected cor rectly or at all due totech ni‐
cal factors, su chas transmission frequenc y.
R Ifth e information on the navigation sy stem's
digital map is incor rect, incomple teor out of
date.
R If signs or thero ad la yout is ambiguous, e.g.
traf fic signs in roadwor ks, at exits and
ra mp s, in neighbouring lanes or parallel
ro ads.
R If signs do not con form tothest andard.
R If signs or road la youts are specific tothe
country and devia tefrom thero ute guidance in
the navigation sy stem, e.g. at or be yond
construction si tes.
R After sharp turns and tight bends, when traf‐
fi c signs are outside the camera's field of
vision.
R Ifyo uove rtake vehicles with traf fic signs
whi chare af fixe d or attached tothem.
R Ifyo u are using transpo rtequipment secured
to theve hicle with a trailer coupling, such as
a bicycle rack ,re strictions for car/trailer
combinations may be considered valid if
applicable.
Setting Traf fic Sign Assist
Multimedia sy stem:
4 © 5
Settings 5
Assistance
5 Assistance 5
Traffic Sign Assist
Ac tivating or deactivating the speed warning #
Activate or deacti vate Speed limit warning .
Setting the type of warning #
Select ´nexttoSpeed limit warning. #
Select Visual & audible orVisual. 250
Driving and pa rking

and make sure
there is suf ficient clear‐
ance. If a
vehicle is de tected in the monitoring range,
th ere dwa rning lamp lights up in the cor re‐
sponding outside mir ror.
If a vehicle occupant pulls the door handle on
th e side of thewa rning, a warning tone sounds
twice and the ambient lighting in there spective
door and thewa rning lamps in the cor respond‐
ing outside mir rorflash red.
Ve hicles with MBUX Interior Assistant: the
visual warning begins as soon as the hand of a
ve hicle occupant mo ves in tothe area of the
door.
% Ve
hicles with ambient lighting or active
ambient lighting: theWarning assistance of
th e ambient lighting can be activated and
deactivated (/ page162).
% The warning assis tance can di ffer depending
on the equipment and may vary according to
th e setting.
The exitwa rning is only available when Active
Blind Spot Assi stis activated and up toa maxi‐ mum of
thre e minutes af terth e ignition has
been switched off. The exitwa rning is no longer
av ailable once thewa rning lamp in the outside
mir rorflashes 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.
Sy stem limits
Ac tive Blind Spot Assi stmay be limi ted 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 rowvehicles, 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
th eir lane Wa
rnings may be issued in er ror when driving
close tocrash ba rriers or similar continuous lane
borders. Alw ays make sure that there is suf fi‐
cient di stance tothe side forot her traf fic or
obs tacles.
Wa rnings may be inter rupte d when driving along‐
side long vehicles, forex ample lor ries, for a pro‐
longed time.
Ac tive Blind Spot Assi stis not operational when
re ve rsege ar is engaged.
Ac tive Blind Spot Assi stis not operational if
transpo rtequipment, forex ample a trailer or
bicycle rack , is attached tothe trailer hitch and
th e electrical connection has been cor rectly
es tablished.
Ad ditionall y,theex itwa rning may be limited in
th efo llowing situations:
R when the sensors are co veredby adjacent
ve hicles in nar rowparking spaces
R when people approach theve hicle
R intheeve nt of stationary or slowly moving
objects Driving and parking
253

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