2021 MERCEDES-BENZ S-CLASS SALOON LONG engine

R
activating the hazard warning lights
R triggering an automatic emer gency call
(/ page 411)
R switching o. the engine
To start theve hicle again, switch theve hicle
o. and on once more (/ page 211). Depend-
ing on the type and se verity of the accident,
yo u may no longer be able tostart theve hicle.
R switching o. the fuel supply
R v
vehicles wit
ehicles wit h h
h hybr
ybr id dr
id dr iv
ive:
e: switching o. the
hy brid system and high-voltage on-board elec-
trical system
R unlocking theve hicle doors
R lowe ring the side windo ws
R displaying the emer gency guide in the central
display
R switching on the interior lighting
F
F unction of t
unction of t he pos
he post-collision brt-collision br ake
ake
Depending on the accident situation, the post-col-
lision brake can minimise the se verity of a fur ther
collision or even avo id it. If an accident is de
tected, the post-collision brake
can implement automatic braking. When theve hi-
cle has come toa standstill, the electric parking
brake is automatically applied.
The driver can cancel automatic braking bytaking
th efo llowing actions:
R braking more strongly than automatic braking
R fully depressing the accelerator pedal with
fo rce Saf Saf
el
ely tr
y tr anspor
anspor ting c
ting childr
hildren in t
en in t he v
he vehicle
ehicle Alw
ay
Alw ays observ
s observ e when c
e when c hildr
hildren ar
en ar e trav
e tr avelling in t
elling in t he
he
v
v ehicle
ehicle %
Also strictly obser vethe saf ety no tesfo rthe
speci/c situation. In this wa yyo u can recog-
nise po tential risks and avoid dangers if chil-
dren are tr avelling in theve hicle
(/ page 66).
Be dilig
Be dilig ent
ent
Bear in mind that negligence when securing a
ch ild in thech ild restraint system ma y haveseri- ous conse
quences. Alw ays be dili gent in securing
a ch ild carefully before every journe y.
Ne ver allow babies and children totrave l sitting
on the lap of ano ther vehicle occupant.
To impr oveprotection forch ildren younger than
12 years old or under 1.50 m in height,
Mercedes-Benz recommends you obser vethefo l-
lowing information:
R Always secure thech ild in a child restraint sys-
te m suitable forth is Mercedes-Benz vehicle.
R The child restraint system must be appropria te
to the age, weight and size of thech ild.
R The vehicle seat must be suitable for /tting a
ch ild restraint system (/ page 70).
Ac cident statistics show that children secured on
th ere ar seats are generally safe rth an children
secured on the front seats. Forth is reason,
Mercedes-Benz st rongly advises that you /t a
ch ild restraint system toare ar seat. Occupant saf
ety
65 65

#
T
To loc
o loc k t
k the
he leT-hand
leT-hand side of t
side of the v
he vehicle:
ehicle: turn
th e emer gency key clockwise as far as it will
go. #
T
To loc
o loc k t
k the r
he r ight-hand side of t
ight-hand side of t he v
he vehicle:
ehicle: turn
th e emer gency key anti-clockwise as far as it
will go.
If th e loc ked door is then closed, it can no longer
be opened from the outside. Boot
Boot
Opening t
Opening t
he boo
he boot lid
t lid &
D
DAN
AN GER
GER Risk of exhaust gas poisoning
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Exhaust
ga ses can enter theve hicle interior if the boot
lid is open when theve hicle is running, espe-
cially if theve hicle is in motion. #
Always switch o. theve hicle before
opening the boot lid. #
Never drive with the boot lid open. *
N
NOOTE
TE Damage tothe boot lid byobstacles
abo vetheve hicle The boot lid swings upwards when it is
opened.
#
Therefore, make sure that there is su1-
cient clearance abo vethe boot lid. #
Pull the boot lid handle. #
V Vehicles wit
ehicles wit h HANDS-FREE A
h HANDS-FREE A CCESS:
CCESS:make a
kicking mo vement with your foot below the
bumper (/ page 101). V
V
ehicles wit
ehicles wit h boo
h boot lid conv
t lid conv enience closing
enience closing #
Pull remo teoperating switch 1until the boot
lid opens.
or #
Press and hold theH button on thekey. #
Ifth e boot lid is stopped in an intermediate
position, pull it upwards. Release it as soon as
it begins toopen. 98
98
Opening and closing

Head r
Head r
es
estrtraints
aints A
A
djus
djusting t ting t he fr
he front seat luxur
ont seat luxur y head r
y head res
estrtraints
aints
mec
mec hanically
hanically &
W
WARNI NG
ARNI NGRisk of injury if vehicle settings
are adjusted while theve hicle is in motion
Yo u could lose control of theve hicle in partic-
ular in thefo llowing situations:
R Ifyo u adjust the driver's seat, the head
re straints, the steering wheel or the mir ror
while theve hicle is in motion.
R Ifyo ufa sten your seat belt while theve hi-
cle is in motion. #
Before starting the engine: adjust the
driver's seat, head restraints, stee ring
wheel and mir ror in particular and fasten
yo ur seat belt. &
W
WARNING
ARNING Risk of injury due toincor rectly
adjus ted head restraints
If head restraints ha venot been adjusted cor-
re ctl y,there is an increased risk of injury in th
e head and neck area, e.g. in theev ent of an
accident or sudden braking. #
Before driving o., make sure forev ery
ve hicle occupant that the centre of the
head restraint supports the back of the
head at about eye le vel. Ad
just the head restraint fore -and-aT position so
th at it is as close as possible tothe back of your
head. #
T
To mov
o mov e f
e forw
orw ar
ards:
ds: pull the head restraint for-
wa rds. #
T
To mov
o mov e bac
e backw
kwar
ards:
ds: press release knob 1
and push the head restraint ba ckwards. A
A
tt
tt ac
ac hing and r
hing and r emo
emoving t
ving t he additional cushion of
he additional cushion of
t
t he fr
he fr ont-seat luxur
ont-seat luxur y head r
y head res
estr
traint
aint #
Position head restraint 2asfarfo rw ards as
possible. #
T
To att
o att ac
ach t
h t he additional cushion:
he additional cushion: openVelcro
strip 4onthere ar of additional cushion 1. #
Guide Velcro strip 4between head restraint
2 and strip 3. Seats and st
owing
131
131

#
V
Vehicles wit
ehicles wit h r
h reclining r
eclining r ear seat
ear seat::press one of
preset position buttons 4orT.
The seat is mo vedto the stored position. ATer
re leasing the button, the front seat and rear
seat are mo ved automatically into the stored
position.
% The preset positions in the area forch au.eur
mode can only be set when the conditions for
ch au.eur mode are ful/lled (/ page 125).
% You can use there ar-compartment child
saf ety lock todisable this function
(/ page 86). S
S
t
to
o w
w ag
ag e ar
e ar eas
eas N
No
ot
tes on loading t
es on loading t he v
he vehicle
ehicle &
D
DAN
AN GER
GER Risk of exhaust gas poisoning
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Exhaust
ga ses can enter theve hicle interior if the boot
lid is open when the engine is running, espe-
cially if theve hicle is in motion. #
Always switch o. the engine before
opening the boot lid. #
Never drive with the boot lid open. Objects in
the deployment area of an airbag may
pr ev ent the airbag from functioning cor rectl y.
Obser vethe no tes on pr otection pr ovided bythe
airbag (/ page 54).
V
V ehicles wit
ehicles wit h r
h rear airbag:
ear airbag: also observethe no tes
on there ar airbag (/ page 61). &
W
WARNING
ARNING Risk of injury from unsecured
items in theve hicle
If objects, lug gage or loads are not secured or
not secured su1ciently, they could slip, tip
ov er or be thro wn around and thereby hit vehi-
cle occupants.
There is a risk of injur y,particular lyin the
eve nt of sudden braking or a sudden change
in direction. #
Always st owobjects in such a wayth at
th ey cannot be thro wn around. #
Before the journe y,secure objects, lug-
ga ge or loads against slipping or tipping
ove r. &
W WARNI NG
ARNI NGRisk of injury due toobjects
being st owed incor rectly
If objects in theve hicle interior are st owed
incor rectl y,they can slide or be thro wn around
and hit vehicle occupants. In addition, cup
holders, open st owage spaces and mobile
phone brac kets cannot alw aysreta in all
objects they contain.
There is a risk of injur y,particular lyin the
eve nt of sudden braking or a sudden change
in direction. #
Always st owobjects in such a wayth at
th ey cannot be thro wn around in such
situations. #
Always make sure that objects do not
pr otru de from st owage spaces, lug gage
nets or st owage nets. #
Close the loc kable st owage spaces
before starting a jou rney. 148
148
Seats and st
owing

5
L Low beam/high beam
6 R Switches there ar fog light on/o.
When low beam is activated, theT indicator
lamp forth e standing lights will be deactivated
and replaced bytheL low- beam indicator
lamp. #
Always park your vehicle safely using su1cient
lighting, in accordance with there leva nt legal
stipulations.
* N
NOOTE
TE Battery dis charging byoperating the
standing lights Operating
the standing lights over a period of
hours puts a strain on the batter y. #
Where possible, switch on theright X
or leT Wparking light. Fo
rve hicles that are wider than 2 m or lon ger
th an 6 m,single-sided parking lighting is not per-
mitted in some countries. In this case, the stand-
ing lights are also switched on in the parking
lights position. If
th e battery is insu1ciently charge d, the stand-
ing lights or parking lights will be switched o.
automatically tofacilitate the next engine start.
The exterior lighting (e xcept standing and parking
lights) will switch o. automatically when the driv-
er's door is opened.
R Obser vethe no tes on sur round lighting
(/ page 178).
Switc Switc hing on accident scene lighting
hing on accident scene lighting #
Switch o. theve hicle. #
Switch on the hazard warning light
(/ page 172). #
Turn the light switch from theà position to
th eL position.
The low beam will be switched on despite the
ve hicle being switched o..
The accident scene lighting will be switched o. if:
R you switch o. the hazard warning lights.
R you turn the light switch back toà .
R the battery is insu1ciently charge d. A
A
ut
ut omatic dr
omatic dr iving lights function
iving lights function
When theve hicle is switched on, the standing
lights, low beam and daytime running lights are
switched on automatically depending on the light
conditions. &
W
WARNING
ARNING Risk of accident when the
dipped beam is switched o. in poor visi-
bility
When the light switch is set toà ,the
dipped beam may not be switched on auto-
matically if there is fog, snow or other causes
of poor visibility such as spr ay. #
In such cases, turn the light switch to
L . The automatic driving lights are only an aid.
Yo u
are responsible forve hicle lighting.
Switc Switc hing t
hing t he r
he rear f
ear f og lights on or
og lights on or o.
o.
R
R eq
eq uir
uir ements:
ements:
R The light switch is in theL orà posi-
tion. #
Press the R button. 170
170
Light and sight

Se
Se
tting lo
tting lo w beam
w beam Multimedia system:
4 © 5
Settings 5
Lights
5 MULTIBEAM LED 5
Low beam #
Select Right-side traffic, Left-side trafficor
Automatic.
% Invehicles with DIGITAL LIGHT headlamps,
th e Intelligent Light System can be adjusted
on theDIGITAL LIGHT menu.Se
Se
tting t
tting t he e
he ext
xter
er ior lighting
ior lighting switc
switch-o.
h-o. dela
delay time
y time R
R
eq
eq uir
uir ements:
ements:
R The light switch is in theà position.
Multimedia system: 4 © 5
Settings 5
Lights
5 Interior/exterior lighting
5 Exterior lighting delayed switch off #
Set the swit ch-o. delay time.
When theve hicle's engine is switched o., the
ex terior lighting will be activated forth e set
time. A
A
ctiv
ctiv ating/deactiv
ating/deactiv ating t
ating the locat
he locat or lighting
or lighting R
R
eq
eq uir
uir ements:
ements:
R The light switch is in theà position.
Multimedia system: 4 © 5
Settings 5
Lights
5 Interior/exterior lighting #
Activate or deactivate Locator lighting.
When the function is activated, theex terior light-
ing will light up for 40 seconds aTer theve hicle is
unloc ked. When you start theve hicle, the locator
lighting is switched o. and automatic driving
lights are activated. Int Int
er
erior lighting
ior lighting A
A
djus
djus ting t
ting t he int
he int er
erior lighting
ior lighting 1
c
Switches the front interior lighting
on/o.
2 u
Switches there ar interior lighting on/o.
3 |
Switches automatic interior lighting con-
trol on/o. #
T To switc
o switc h r
h reading lam
eading lam ps
pson/o.:
on/o.: holdyour
hand under there spective reading lamp 4or
5. 178
178
Light and sight

Ov
Ov
er
ervie
vie w of climat
w of climat e contr
e control syst
ol systems
ems N
No
ot
tes on climat
es on climat e contr
e control
ol An interior air /lter in combination with
the pre/l-
ter inthe engine compartment must alw ays be
used so that the air conditioning system, pollution
le ve l monitoring and the air /lt ration workcor-
re ctl y.Use /lters recommended and appr oved by
Mercedes-Benz. Alw ays ha vemaintenance work
car ried out at a quali/ed specialist workshop. Ov
Ov
er
ervie
vie w of THERMO
w of THERMO TR
TRONIC climat
ONIC climat e bar
e bar The indicator lamps indicate
that the cor respond-
ing function is activated. Fr
ont climate bar on the central display
(e xamp le)
1 s Increases thete mp erature
2 Upper display area of the climate bar with the
ex amples of jswitching o. climate con-
trol (/ page 191), ¿switching the A/C
function on/o. (/ page 192) and0syn-
ch ronisation function (/ page 193) 3
¬ Demists the windscreen
(/ page 192, 196)
4 g Switches air-recirculation mode on/o.
(/ page 193) or
G Calls up the particulate status display
(/ page 191) or
Ac tivates/deactiva tesre sidual heat utilisation
(/ page 194)
Plug-in hybrid vehicles: &Activates or
deactivates pre-entry climate control
(/ page 200)
5 ¤ Switches there ar wind owheater on/o.
6 Depending on vehicle equipment and set-
tings: temp erature displa y,defrost function
displa y,air0o w,pre-ent ryclimate cont rol or
auxiliary heating
7 J Increases the air0ow or switches on cli-
mate control (/ page 191)
8 r Reduces thete mp erature
9 Ã Sets climate control toautomatic mode,
ri ght (/ page 192)
A ± Calls up the air conditioning menu
(/ page 191) Climate control
189 189

%
If air-recirculation mode is swit ched on, the
wind ows may mist up more quickl y.Switch on
ai r-re circulation mode only brie0y. Switc
Switc
hing r
hing r esidual heat mode
esidual heat mode on/o.
on/o.via t
via the cli-
he cli-
mat
mat e bar
e bar R
R
eq
eq uir
uir ements:
ements:
R The residual heat function is available.
R The vehicle is par ked.
R The coolant temp erature is su1ciently high.
It is possible tomake use of there sidual heat
from the engine tocontinue heating or ventilating
th e front compartment of theve hicle for appr ox-
imately 30 minutes, depending on thete mp era-
ture set. #
T
To switc
o switc h on or
h on or o.:
o.:select Residual heat on
th e climate bar of the central displa y.
The residual heat function automatically switches
o. aTer some time.
% Ifre sidual engine heat utilisation is activated,
th e two buttons for setting thete mp erature and air distribution are automatically deactiva-
te
d. Switc Switc
hing r
hing r esidual heat
esidual heat on/o.
on/o.via t
via the r
he rear oper
ear oper at-
at-
ing unit
ing unit R
R
eq
eq uir
uir ements:
ements:
R The residual heat function is available.
R The vehicle is par ked.
R The coolant temp erature must be su1ciently
high.
When there sidual heat of the engine is activated
in there ar compartment, you can heat or ventila te
th e front and rear compartments for appr ox-
imately 15 minutes. #
Press button Ì. A
A
ctiv
ctiv ating/deactiv
ating/deactiv ating ionisation
ating ionisation Multimedia system:
4 Climate menu 5
Air quality
Ionisation impr ovesth equ ality of theve hicle's
interior air. Ionisation of the interior air is odour-
less. #
Select Ionisation.
% The function can only be per form ed if the
AU TO mode is activated or the air distribution
is set tothe side air vent. The function is
re stric ted if the side air vents on the driver's
side are closed. F
F
r
ragr
agr ance syst
ance syst em
em A
A
ctiv
ctiv ating/deactiv
ating/deactiv ating t
ating the fr
he fragr
agrance syst
ance syst em
em
using t
using t he multimedia syst
he multimedia syst em
em
R
R eq
eq uir
uir ements:
ements:
R Automatic climate control is activated.
R The glo vecompartment is closed.
R A 0acon is inser ted. 194
194
Climate control