2021 MERCEDES-BENZ S-CLASS SALOON LONG brake sensor

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

%
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

Selecting a vie
Selecting a vie
w f
w for t
or t he 360° Camer
he 360° Camer a (rev
a (r ever
erse
se
g
g ear)
ear)
R
R eq
eq uir
uir ements:
ements:
R The Activation in R setting is activated in the
multimedia system (/ page 317).#
Engage reve rsege ar. #
Select the desired view in the multimedia sys-
te m (/ page 312).
Se
Se tting t
tting t herev
he rever
ersing camer
sing camer a or 360° Camera
a or 360° Camera
The reve rsing camera is only an aid. It is not a
substitute foryo ur attention tothe sur roundings.
The responsibility for safe manoeuvring and par k-
ing remains with you. Make sure that no persons,
animals or objects etc. are in the manoeuvring
ra nge. Pay attention toyour surroundings and be
re ady tobrake at all times.
Multimedia system: 4 © 5
Settings 5
Assistance
5 Camera #
Activate or deactivate Activation in R.
% The settings for deactivating there ve rsing
camera are not available in every countr y.360° Camer
360° Camer
a wit
a with GPS - managing activ
h GPS - managing activ ation
ation
positions
positions
Multimedia system:
4 © 5
Settings 5
Assistance
5 Camera
R R enaming an activ
enaming an activ ation position
ation position
% You can de term ine activation positions in the
Camera views menu. (/page 312) #
Select an activation position. #
Select ´. #
Enter a name and con/rm.
The activation position is sa ved under the new
name.
Dele Dele ting an activ
ting an activ ation position
ation position #
Select Manage activation positions. #
Select an activation position. #
Select E. #
Con/ rmthe prom pt.
The activation position is del eted. Opening t
Opening t
he camer
he camera cov
a cover of t
er of t herev
he rever
ersing cam-
sing cam-
era
era
Multimedia system:
4 © 5
Settings 5
Assistance
5 Camera #
Select Open camera cover.
% The camera co ver closes automatically aTer
some time or aTer theve hicle is switched on
or o.. P P
ar
ar king Assis
king Assis t P
t PARK
ARK TR
TRONIC
ONIC F
F
unction of P
unction of P ar
arking Assis
king Assis t P
t PARK
ARK TR
TRONIC
ONIC
Pa rking Assist PARKTRONIC is an electronic par k-
ing assistance system which monitors the area
sur rounding your vehicle and sho wsyouth e dis-
ta nce between theve hicle and a de tected obs ta-
cle visual lyand audib ly.
The passive side impact pr otection also warnsyou
of obstacles tothe side. These must be de tected
beforehand bythe sensors in the front or rear
bumper while driving bythem. If you steer in the
direction of a de tected obstacle and there is a risk
of a lateral collision, a warning is issued. The pas- Driving and parking
317
317

%
If Drive AwayAssist is not available, the same
symbol appears in grey . If theCamera & park-
ing menu is not open in the central displa y,
th e symbol and pop-up of Parking Assist
PA RKTRONIC bo thappear.
Drive Away Assist is only an aid. It is not a substi-
tute foryo ur attention tothe sur roundings. The
re sponsibility for safe manoeuvring and parking
re mains with you. Make sure that no persons, ani-
mals or objects etc. are in the manoeuvring
ra nge. &
W
WARNI NG
ARNI NGRisk of accident caused bylimi-
te d de tection per form ance of Drive Away
Assist
Drive Away Assist cannot alw ays clear lyiden-
tify objects and tra1c situations. #
Always pay careful attention tothe tra1c
situation; do not relyon Drive Away
Assist alone. #
Be prepare dto brake or swer veas nec-
essar y,prov ided the tra1c situation per-
mits and that it is safe totake evasive
action. Syst
Syst
em limits
em limits
The system limits of Active Parking Assist apply
(/ page 321).
On uphill gradients, the per form ance of Drive
Away Assist is restric ted.
If transport equipment is secured tothe trailer
hitch, such as a trailer or bicycle rack , Drive Away
Assist is not available when you are reve rsing.
F
F unction of cr
unction of cr oss
osstr
tra1c
a1c w
war
ar ning
ning
The cross tra1c warning can warnyou of crossing
tra1c when you are exiting a parking space. The
ra dar sensors in the bumper also monitor the area
adjacent totheve hicle.
The cross tra1c warning is active under thefo l-
lowing conditions:
R Warning for crossing traffic behind: theve hi-
cle is driving in reve rse at a speed slo werth an
appr ox. 10 km/h. R
Warning for crossing traffic ahead: theve hi-
cle is driving forw ards at a speed slo werth an
appr ox. 10 km/h and the camera image is
shown in the central display (/ page 316).
The Warning for crossing traffic ahead can be
deactivated or activated in theManoeuvring
assistance menu.
Depending on the countr y,theWarning for cross-
ing traffic behind can also be deactivated or acti-
va ted (/ page 333).
If a critical situation is de tected, thefo llowing
symbol appears in red in the selected view in the
Camera & parking menu: Warning for crossing traffic behind:
theve hicle
can be automatically braked if cross tra1c is
de tected. Driving and parking
331 331

%
Ifth e cross tra1c warning is not available, the
L symbol appears in grey . If theCamera
& parking menu is not opened in the central
displa y,the symbol and pop-up of Parking
Assist PARKTRONIC bo thappear.
The cross tra1c warning is only an aid and not a
substitute foryo ur attention tothe sur roundings.
The responsibility for safe manoeuvring and par k-
ing remains with you. Make sure that no persons,
animals or objects etc. are in the manoeuvring
ra nge. &
W
WARNI NG
ARNI NGRisk of accident caused bylimi-
te d de tection per form ance of the cross
tra1c warning
The cross tra1c warning cannot alw ays clear ly
identify objects and tra1c situations. #
Always pay careful attention tothe tra1c
situation; do not relyonthe cross tra1c
wa rning alone. #
Be prepared tobrake or swer veas nec-
essar y,prov ided the tra1c situation per-
mits and that it is safe totake evasive
action. Syst
Syst
em limits
em limits
The system limits of Active Parking Assist apply
(/ page 321).
If th era dar sensors are obstructed byvehicles or
ot her objects, de tection is not possible.
In thefo llowing situations, the cross tra1c warn-
ing is not available:
R on inclines
R Warning for crossing traffic behind : if trans-
port equipment, forex ample a trailer or bicy-
cle rack , is attached tothe trailer hitch and
th e electrical connection has been cor rectly
es tablished
Manoeuvr
Manoeuvr ing br
ing brak
ake function
e function
The manoeuvring brake function can pr event colli-
sions with pedestrians when theve hicle is reve rs-
ing at slow speeds. If there ve rsing camera
de tects a person in theve hicle path, theve hicle
can be braked toa standstill.
The manoeuvring brake function can inter vene
under thefo llowing conditions:
R The vehicle is reve rsing at a speed slo werth an
10 km/h. R
The camera image is shown in the central dis-
play (/ page 316).
Yo u can activate and deactivate the manoeuvring
brake function in theManoeuvring assistance
menu (/ page 333).
If th e manoeuvring brake function is triggered, the
fo llowing symbol appears in red in the selected
view in theCamera & parking menu: %
Ifth e manoeuvring brake function is not avail-
able, the same symbol appears in grey.
The manoeuvring brake function is only an aid. It
is not a substitute foryo ur attention tothe sur-
ro undings. The responsibility for safe manoeuvring
and parking remains with you. Make sure that no
persons, animals or objects etc. are in the
manoeuv ring range. 332 332
Driving and parking

R
Furthermore, the use of cer tain tyre types in
cer tain regions and areas of operation can be
high lybene/cial.
R Only use tyres and wheels of the same type
(summer tyres, winter tyres, MOExtended
tyres) and the same make.
R Only /t wheels of the same size on one axle
(leT and right).
It is only permissible to/t a di.e rent wheel
size in theev ent of a 0at tyre in order todrive
to the specialist workshop.
R Do not make any modi/cations tothe brake
system, the wheels or the tyres.
The use of shims or brake dust shields is not
permitted and may in validate theve hicle's
ge neral opera ting permit.
R V Vehicles wit
ehicles wit h a tyr
h a tyre pr
e pressur
essur e monit
e monit or
oring sy
ing sy s-
s-
t
t em:
em: all /t tedwheels must be equipped with
functioning sensors forth e tyre pressure mon-
itoring system.
R Attemp eratures below 7 °C use winter tyres
or all-season tyres mar kedi M+Sfor all
wheels. Wi
nter tyres pr ovide the best possible grip in
wintry road conditions.
R For M+S tyres, only use tyres with the same
tread.
R Obser vethe maximum permissible speed for
th e M+S tyres /t ted.
If th e tyre's maximum speed is below that of
th eve hicle, this must be indicated byan
appropriate label in the driver's /eld of vision.
R Run in new tyres at moderate speeds forthe
/r st 100 km.
R Replace the tyres aTer six years at the latest,
re ga rdless of wear.
R When r
When r eplacing wit
eplacing wit h tyr
h tyres t
es that do no
hat do no t f
t featur
eatur e
e
r
r un-0at
un-0at c
char
har act
acter
eris
istics:
tics: vehicles with
MOExtended tyres are not equipped with a
TIREFIT kit at thefa ctor y.Equip theve hicle
with a TIREFIT kit aTer replacing with tyres
th at do not feature run-0at characteristics,
e.g. winter tyres.
Fo r more information on wheels and tyres, con-
ta ct a quali/ed specialist workshop. Be sure
toalso obser vethefo llowing fur ther rela-
te d subjects:
R Notes on tyre pressure (/ page 462)
R Tyre pressure table (/ page 463)
R Notes on the emer gency spa rewheel
(/ page 475) N No
ot
tes on int
es on int erc
erchanging wheels
hanging wheels &
W
WARNING
ARNING Risk of injury thro ugh di.erent
wheel sizes
Inter changing the front and rear wheels can
se verely impair the driving characteristics.
The disk brakes or wheel suspension compo-
nents may also be damaged. #
Only inter change the front and rear
wheels if the wheels and tyres ha vethe
same dimensions. Inter
changing the front and rear wheels if the
wheels or tyres ha vedi.erent dimensions can
re nder thege neral opera ting permit in valid. 468 468
Wheels and tyres

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
¸
ð
ç
Ä
temporarily unavailable
Sensors dirty *F
ront and corner radar sensors (hereaTer "sensors") are malfunctioning. Possible causes:
R The senso rsare dirty
R Heavy rain or snow
R Extended country driving without other tra1c, e.g. in the desert
Driving systems and driving saf ety sy stems ma y be malfunctioning or temp orarily una vailable. The brake system, steer-
ing and drive system will continue tofunction normall y. #
Drive on
Once the causes of the problem are no longer present, the driving systems and driving saf ety sy stems will be available
again and the cor responding symbols will be switched o..
If th e display message does not disappear: #
Stop theve hicle in accordance with the tra1c conditions. #
Clean all sensor co vers from outside (/ page 267). #
Restart theve hicle. 546 546
Displ
aymessages and warning/indicator lamps