MERCEDES-BENZ S-CLASS SALOON LONG 2020 Service Manual

Depending on
theve hicle equipment, this
includes thefo llowing data, forex ample:
R multimedia data, such as music, films or pho‐
to sfo r playback in an integrated multimedia
sy stem
R address book data for use in connection with
an integrated hands-free sy stem or an inte‐
grated navigation sy stem
R entered navigation destinations
R data about the use of Internet services
These data for con venience and inf otainment
functions may be sa ved locally in theve hicle or
th ey may be located on a device which you ha ve
connected totheve hicle, such as a smartphone,
USB flash drive or MP3 pla yer.If yo u ha ve
entered these data yourself, you can dele tethem
at any time.
This data is transmit ted from theve hicle tothird
parties only at your requ est. This applies, in par‐
ticular, when you use online services in accord‐
ance with the settings that you ha veselected. Smartphone integ
ration (e.g. Android Autoor
Apple CarPlay ®
)
If yo ur vehicle is accordingly equipped, you can
connect your smartphone or ano ther mobile end
device totheve hicle. You can then control them
by means of the control elements integrated in
th eve hicle. Images and audio from the smart‐
phone can be output via the multimedia sy stem.
Cer tain information is simultaneously transfer‐
re dto yo ur smartphone. Depending on the type
and integration, this includes position data, day/
night mode and other general vehicle statuses.
Fo r more information please consult the Owner's
Manual of theve hicle/inf otainment sy stem.
This integration allo ws the use of selected
smartphone apps, such as navigation or music
pla yer apps. There is no fur ther interaction
between the smartphone and theve hicle; in par‐
ticular, vehicle data is not directly accessible.
The type of additional data processing is de ter‐
mined bythe pr ovider of the app being used.
Which settings you can make, if an y,depends on
th e specific app and the operating sy stem of
yo ur smartphone. Online services
Wire
less network connection
If yo ur vehicle has a wireless network connec‐
tion, it enables data tobe exc hanged between
yo ur vehicle and additional sy stems. The wire‐
less network connection is made possible bythe
ve hicle's own transmitter and recei ver or by a
mobile end device that you ha vebrought into the
ve hicle, forex ample, a smartphone. Online func‐
tions can be used via the wireless network con‐
nection. This includes online services and appli‐
cations/apps pr ovided to yo uby the manufac‐
turer or by other pr oviders.
Manu factu rer's se rvices
Re garding the manufacturer's online services,
th e individual functions are described bythe
manufacturer in a suita ble place,forex ample, in
th e Owner's Manual or on the manufacturer's
we bsite, where there leva nt da taprotection
information is also given. Personal data may be
used forth e pr ovision of online services. Data
are exchanged via a secure connection, such as
th e manufacturer's designated IT sy stems. Any
personal data which are collected, processed 38
General no tes

and used,
other than forth e pr ovision of serv‐
ices, is done so exclusively on the basis of legal
permission. This is the case, forex ample, for a
legally prescribed emergency call sy stem, a con‐
tractual agreement or when consent has been
given.
Yo u can ha veservices and functions, some of
which are subject toafe e, activated or deactiva‐
te d. This excludes legally prescribed functions
and services, such as an emer gency call sy stem.
Third party services
If yo u use online services from other pr oviders
(third parties), these services are there sponsi‐
bility of the pr ovider in question and subject to
th at pr ovider's data pr otection conditions and
te rm s of use. As a general rule, the manufac‐
turer has no influence on the conte nt
exc hanged.
Fo rth is reason, when services are pr ovided by
th ird parties, please ask the service pr ovider in
qu estion for information about the type, extent
and pu rpose of the collection and use of per‐
sonal data. Data pr
otection rights Depending on
your count ryor the equipment
and range of functions of your vehicle as well as
th e services you use and the services on of fer,
yo u are entitled todiffere nt da taprotection
ri ghts. Further information on data pr otection
and your data pr otection rights can either be
fo und on the manufacturer's website or you will
re cei vethis information as part of theva rious
services and service of fers . The reyou will also
fi nd the conta ct information forth e manufac‐
turer and its data pr otection of ficers.
At awo rkshop, forex ample, with the support of
a specialist and possibly for a fee, you can ha ve
data read out which is stored only locally in the
ve hicle. Copyright
Information on licences for free and open-sou rce
software used in your vehicle can be found on
th e data car rier in your vehicle document wallet
and with updates on thefo llowing website:
https://www.mercedes-benz.com/opensource General no
tes39

Re
stra int sy stem Pr
otection pr ovided bythere stra int sy stem The
restra int sy stem includes thefo llowing com‐
ponents:
R Seat belt sy stem
R Airbags
R Child restra int sy stem
R Child seat securing sy stems
The restra int sy stem can help pr eventtheve hi‐
cle occupants from coming into contact with
parts of theve hicle interior in theev ent of an
accident. In theev ent of an accident, the
re stra int sy stem can also reduce thefo rc es to
which theve hicle occupants are subjected.
A seat belt can only pr ovide the best le vel of pro‐
te ction if it is worncor rectl y.Depending on the
de tected accident situation, seat belt tensioners
and/or airbags supplement the pr otection
of fere dby a cor rectly wornseat belt. Seat belt
te nsioners and/or airbags are not depl oyed in
eve ryaccident. In order
forth ere stra int sy stem toprov ide the
intended le vel of pr otection, each vehicle occu‐
pant must obser vethefo llowing information:
R Fasten seat belts cor rectl y.
R Sit in an almost up right seat position with
th eir back against the seat backrest.
R Sit with their feet resting on thefloor, if pos‐
sible.
R Alw ays secure persons under 1.50 m tall in
an additional restra int sy stem suitable for
Mercedes-Benz vehicles.
Ho wever,no sy stem available today can com‐
ple tely elimin ate injuries and fata lities in every
accident situation. In particular, the seat belt
and airbag generally do not pr otect against
objects penetrating theve hicle from the outside.
It is also not possible tocompl etely rule out the
ri sk of injury caused bythe airbag deploying. Re
duced restra int sy stem pr otection &
WARNING Risk of inju ryor death due to
modifications tothere stra int sy stem
Ve hicle occupants may no longer be pr otec‐
te d as intended if alterations are made tothe
re stra int sy stem. #
Never alter the parts of there stra int
sy stem. #
Neverta mp er with the wiring or any
electronic component parts or their
software. If it is necessary
tomodify theve hicle toaccom‐
modate a person with disabilities, con tact a
qu alified specialist workshop.
Mercedes-Benz recommends that you use driv‐
ing aids which ha vebeen appr ovedfo ryo ur vehi‐
cle byMercedes-Benz. Re
stra int sy stem functionality When
the ignition is switched on, a self-test is
per form ed, during which the6 restra int sys‐ 40
Occupant saf ety

te
m wa rning lamp lights up. It goes out no later
th an a few seconds af terth eve hicle is star ted.
The components of there stra int sy stem are then
functional. Malfunctioning
restra int sy stem A malfunction has occur
red in there stra int sys‐
te m if:
R the6 restra int sy stem warning lamp does
not light up when the ignition is switched on
R the6 restra int sy stem warning lamp
lights up continuously or repeatedly during a
journey &
WARNING Risk of inju rydue tomalfunc‐
tions in there stra int sy stem
Components in there stra int sy stem may be
activated unintentionally or not deploy as
intended in an accident. #
Have there stra int sy stem checked and
re paired immediately at a qualified spe‐
cialist workshop. Fu
nction of there stra int sy stem in an acci‐
dent How
there stra int sy stem works depends on the
se verity of the impact de tected and the apparent
type of acciden t:
R Frontal impact
R Rear impact
R Side impact
R Rollover
The activation thre sholds forth e components of
th ere stra int sy stem are de term ined based on
th eev aluation of the sensor values measured at
va rious points in theve hicle. This process is pre-
em ptive in nature. The triggering/deployment of
th e components of there stra int sy stem must
ta ke place in good time at thest art of the colli‐
sion.
Fa ctors whi chcan only be seen and measu red
af te r a collision has occur red cann otplay a deci‐
sive role in airbag deployment. Nor do they pro‐
vide an indication of airbag deployment.
The vehicle may be deformed significantly with‐
out an airbag being deplo yed. This is the case if only parts which are
relatively easily deformed
are af fected and thera te ofvehicle deceleration
is not high. Con versely, an airbag may be
deplo yedev en though theve hicle suf fers only
minor deformation. If very rigid vehicle parts
such as longitudinal members are hit, this may
re sult in suf ficiently high le vels of vehicle decel‐
eration.
Depending on the de tected deployment situa‐
tion, the components of there stra int sy stem can
be activated or deplo yed independently of each
ot her:
R Seat belt tensioner: frontal impact, rear
impact, side impact, rollo ver
R Driver's airbag, front passenger airbag: fron‐
talimpact
R Knee airbag: frontal impact
R Side airbag: side impact
R Cent reairbag: side impact, rollo ver
R Window airbag: side impact, rollo ver,frontal
impact
R Belt airbag: frontal impact
R PRE-SAFE ®
Impulse Side: side impact Occupant saf
ety41

The front passenger airbag can only be deplo
yed
in an accident if thePA SSENGER AIR BAG OFF
indicator lamp is off. If the front passenger seat
is occupied, make sure, bo thbefore and during
th e journe y,that thest atus of the front
passenger airbag is cor rect (/ page 52). &
WARNING Risk of bu rns from hot airbag
components
The airbag parts are hot af ter an airbag has
been depl oyed. #
Do not touch the airbag parts. #
Have a deplo yed airbag replaced at a
qu alified specialist workshop as soon
as possible. Mercedes-Benz
recommends that you ha vethe
ve hicle towe dto aqu alified specialist workshop
af te r an accident. Take this into account, partic‐
ularly if a seat belt tensioner is trig gered or an
airbag deplo yed. If
th e seat belt tensioners are trig gered or an air‐
bag is deplo yed, you will hear a bang, and a
small amount of powder may also be released:
R The bang will not generally af fect your hear‐
ing.
R Ingeneral, the powder released is not haz‐
ardous tohealth but may cause short-term
breathing dif ficulties topersons suf fering
from as thma or other pulmonary conditions.
Pr ov ided it is safe todo so, lea vetheve hicle
immediately or open the window in order to
pr eve nt brea thing dif ficulties. Seat belts
Pr
otection pr ovided bythe seat belt Alw
aysfast enyour seat belt co rrectly before
st arting a journe y.A seat belt can only pr ovide
th e best le vel of pr otection if it is worncor rectly. &
WARNING Risk of inju ryor death due to
incor rectly fastened seat belt
If th e seat belt is not worncor rectly, it can‐
not per form its intended pr otective function.
In addition, an incor rectly fastened seat belt
can also cause injuries, forex ample, in the
ev ent of an accident or when braking or
ch anging direction sudden ly. #
Alw ays ensure that all vehicle occu‐
pants ha vetheir seat belts fastened
cor rectly and are sitting prope rly. Alw
ays obser vethe instructions about the cor‐
re ct driver's seat position and adjusting the seat
(/ page 107).
In order forth e cor rectly wornseat belt topro‐
vide the intended le vel of pr otection, each vehi‐
cle occupant must obser vethefo llowing infor‐
mation:
R The seat belt must not be twis ted and must
fi t tightly and snu gly across the body. 42
Occupant saf ety

R
The seat belt must be routed across the
centre of the shoulder and as low down
across the hips as possible.
R The shoulder section of the seat belt should
not touch your ne cknor be routed under
yo ur arm or behind your bac k.
R Avoid wearing bulky clo thing, e.g. a winter
coat.
R Push the lap belt down as far as possible
across your hips and pull tight with the shoul‐
der section of the belt. Ne verro ute the lap
belt across your abdomen.
Pregnant women must also take particular
care with this.
R Neverro ute the seat belt across sharp, poin‐
te d, abrasive or fragile objects.
R Only one person should use each seat belt at
any one time. Ne ver allow babies and chil‐
dren totrave l sitting on the lap of ano ther
ve hicle occupant.
R Never secure objects with a seat belt if the
seat belt is also being used byone of the
ve hicle's occupants. Alw ays obser vethe
instructions for loading theve hicle when securing objects, luggage or loads
(/
page 134).
Also ensu rethat no objects, e.g. a cushion,
are ever placed between a person and the
seat.
If ch ildren are tra velling in theve hicle, be sure to
obser vethe instructions and saf ety no tes on
"Children in theve hicle" (/ page 58). Limitations of
the pr otection pr ovided bythe
seat belt &
WARNING Risk of inju ryor death due to
incor rect seat position
The seat belt will not of ferth e intended le vel
of pr otection if you ha venot mo vedth e seat
backrest toan almost vertical position.
In particular, you may slip under the seatbelt
and injure yourself. #
Adjust the seat proper lybefore begin‐
ning your journe y. #
Alw ays ensure that the seat backrest is
in an almost vertical position and that th
e shoulder section of your seat belt is
ro uted across the cent reofyour shoul‐
der. &
WARNING Risk of inju ryor death when
additional restra int sy stems are not used
fo r persons with a smaller stature
Pe rsons under 1.50 m tall cannot wearthe
seat belt cor rectly wi thout a suitable addi‐
tional restra int sy stem. #
Alw ays secure persons under 1.50 m
ta ll in a suitable restra int sy stem. &
WARNING Risk of inju ryor death due to
bloc ked seat belt buckle or seat belt
anchorage
Objects next tothe front seat that block the
seat belt buckle or the moving seat belt
anchorage on the front seat impair the func‐
tion of the seat belt tensioners. #
Before starting the journe y,make sure
th at there are no objects around the Occupant saf
ety43

seat belt buckle or between
the front
seat and door. &
WARNING Risk of inju ryor death due to
damaged or modified seat belts
Seat belts cann otprov ide pr otection in the
fo llowing situations:
R the seat belt is damaged, has been modi‐
fi ed, is extremely di rty, bleached or dyed
R the seat belt buckle is damaged or
ex treme lydirty
R modifications ha vebeen made tothe seat
belt tensioner, seat belt anchorage or
seat belt retractor
Seat belts may su stain non-visible damage in
an accident, e.g. due toglass splin ters.
Modified or damaged seat belts could tear or
fa il in theev ent of an accident, forex ample.
Modified seat belt tensioners could acciden‐
ta lly trigger or failto function as intended. #
Never modify the seat belt sy stem, for
ex ample the seat belt, seat belt buckle, seat belt
tensioner, seat belt anchorage
and seat belt retractor. #
Makesure that the seat belts are
undamaged, not wornand clean. #
Alw ays ha vethe seat belts checked
immediately af ter an accident at a
qu alified specialist workshop. Mercedes-Benz
recommends that you use seat
belts which ha vebeen appr ovedfo ryo ur vehicle
by Mercedes-Benz. &
WARNING Risk of inju ryor death from
deplo yedpy rotech nic seat belt tension‐
ers
Py rotech nic seat belt tensioners that ha ve
been deplo yed are no longer operational and
are unable toper form their intended pr otec‐
tive function. #
Therefore, ha vedeplo yedpy rotech nic
seat belt tensioners immedia tely
re placed at a qualified specialist work‐
shop. Mercedes-Benz
recommends that you ha vethe
ve hicle towe dto aqu alified specialist workshop
af te r an accident.
* NO
TEDama gecaused bytrapping the
seat belt If an unused seat belt is not fully
retracted, it
may become trapped in the door or in the
seat mechanism. #
Alw ays ensure that an unused seat belt
is fully retracted. In
fo rm ation on the belt airbag in there ar
seat belt The BELTB
AGidentification indicates that a rear
seat belt is equipped with a belt airbag.
When activated, the belt airbag increases the
pr otected area of theve hicle occupant's ribcage. 44
Occupant saf ety

&
WARNING Risk of inju ryor death due to
use of a non-appr ovedch ild restra int sys‐
tem
In an accident, the belt airbag may damage a
non-appr ovedch ild restra int sy stem or a
ch ild restra int sy stem which has not been
appr ovedfo r use in conjunction with the belt
airbag.
Fo r saf etyre asons, Mercedes-Benz recom‐
mends that you on lyuse a child restra int sys‐
te m which has been tested and appr ovedby
Mercedes-Benz in combination with a belt
airbag. Information on
child restra int sy stems
(/ page 60). Fa
stening and adju sting seat belts If
th e seat belt is pulled quickly or sharpl y,the
seat belt retractor lo cks. The seat belt stra p can‐
not be pulled out any fur ther.
Ve hicles with illuminated design seat belt
buckles: the illuminated seat belt buckle makes fast
ening your seat belt easier in cer tain situa‐
tions, forex ample, when light conditions are
poor.
% The illumination on the seat belt buckle does
not indicate that the seat belt buckle is func‐
tioning cor rectl y. #
Alw ays engage seat belt tongue 2ofthe
seat belt into seat belt buckle 1ofthe cor‐
re sponding seat. #
Press and hold the seat belt outlet release
and slide seat belt outlet 3into the desired
position. #
Let go of the seat belt outlet release and
ensure that seat belt outlet 3locksinto
position.
% A seat belt can only pr ovide the best le vel of
pr otection if it is worncor rectl y.Obser vethe
no tes on fastening the seat belt
(/ page 42).
* NO
TEDeployment of the seat belt ten‐
sioner and side impact airbag when the
front passenger seat is unoccupied If
th e seat belt tongue is engaged in the seat
belt buckle of the unoccupied front
passenger seat, the seat belt tensioner and
th e side impact airbag may also deploy in the
ev ent of an accident along with other sys‐
te ms. Occupant saf
ety45

#
Only one person should use each seat
belt at any one time. Seat belt adjust
ment functionVe
hicles with PRE-SAFE ®
:af te r a front seat
belt has been fastened, the automatic seat belt
adjustment may apply a cer tain tigh tening forc e.
Do not hold the seat belt tight lywhile it is
adjusting.
Yo u can activate and deactivate the seat belt
adjustment function using the multimedia sys‐
te m (/ page 46). Ac
tivating/deactivating seat belt adjustment
via the multimedia sy stem Multimedia sy
stem:
4 © 5
Settings 5
Vehicle
5 Occupant protection #
Activate or deacti vate Belt adjustment. Re
leasing seat belts #
Press there lease button in the seat belt
buckle and guide the seat belt back with the
seat belt tongue. Seat belt
warning function for the driver and
front passen ger The
ü seat belt warning lamp in the driver's
display is a reminder that all vehicle occupants
must weartheir seat belts cor rectly.
In addition, a warning tone may sound.
As soon as the driver and front passenger fasten
th eir seat belts, the seat belt warning goes out. Fu
nction of there ar seat belt status display The
rear seat belt status display is on lyavailable
fo r cer tain countries. When
the ignition is switched on, there ar seat
belt status display informs youfo r a cer tain
amount of time which rear seat belt is not fas‐
te ned.
The status of there ar seat belt can be recog‐
nised bythe colour of the symbol in the driver
display:
R Grey:th e seat belt tongue of a rear seat belt
is not engaged in the seat belt buckle of the
cor responding seat.
R Green: the seat belt tongue of a rear seat
belt is engaged in the seat belt buckle of the
cor responding seat. 46
Occupant saf ety

Every
vehicle occupant must alw aysfast en
th eir seat belt cor rectly before starting a
journe y.
R Red: a vehicle occupant in there ar
passenger compartment has released the
seat belt buckle using there lease button and
may not be properly secured.
If a vehicle occupant unfas tens a seat belt in the
re ar, there ar seat belt status display appears
again.
In addition, a warning tone may sound. Airbags
Overvi
ewof airbags Driver's/f
ront passenger seat
1 Knee airbag
2 Driver's airbag
3 Front passenger airbag
4 Window airbag
5 Side airbag
6 Centre airbag 1
1) Only for cer tain countries. Re
ar seats
4 Window airbag
7 Side airbag
The ins tallation location of an airbag is identified
by the AIRB AGsymbol. An additional ar rowsym‐
bol Mindicates the ins tallation location for cer‐
ta in airbags.
When enabled, an airbag can pr ovide additional
pr otection forth ere spective vehicle occupant.
Pot ential pr otection pr ovided byeach airbag:
R Knee airbag: thigh, knee and lo wer leg
R Driver's airbag, front passenger airbag: head
and ribcage Occupant saf
ety47