2021 MERCEDES-BENZ S-CLASS SALOON LONG air conditioning

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

B
à Sets climate control toautomatic mode,
leT (/ page 192)
C I Reduces the air0ow or switches o. cli-
mate control (/ page 191)
% The climate bar is visible even when theve hi-
cle is par ked or the air conditioning is
switched o. (/ page 191).
% The availability of individual functions is coun-
try and equipment-dependent.
% Vehicles with Dis tance Assist DISTRONIC: if
Distance Assist DISTRONIC inter venes, the
climate bar display on the central display will
be reduced. Ov
Ov
er
ervie
vie w of t
w of t he r
he rear oper
ear oper ating unit
ating unit 1
Sets air dist ribution tothe centre and side air
ve nts in there ar passen ger compartment, leT
2 Sets thete mp erature in there ar passen ger
compartment, leT
3 Sets the air0ow in there ar passen ger com-
partment, leT, or switches climate control
on/o. (/ page 191) 4
Switches climate control on/o.
(/ page 191)
or switches residual heat on/o.
(/ page 194)
5 Sets the air0ow in there ar passen ger com-
partment, right, or switches climate control
on/o. (/ page 191)
6 Sets thete mp erature in there ar passen ger
compartment, right
7 Sets air distribution tothe centre and side air
ve nts in there ar passen ger compartment,
ri ght
8 Sets rear climate cont rolto automatic mode,
ri ght
9 Sets the air distribution totheright rear foot-
we llve nts
A Synchronisation is activated (/ page 193)
B Sets the air distribution tothere ar leT foot-
we llve nts
C Sets rear climate cont rolto automatic mode,
leT
The settings forth e second row of seats can be
con/gured via there ar operating unit, the multi- 190 190
Climate control

media system (/
page 193) orthe MBUX rear
ta blet depending on theve hicle's equipment. Oper
Oper
ating t
ating t he climat
he climat e contr
e control syst
ol system
em Switc
Switc
hing climat
hing climat e contr
e control
olon/o.
on/o. Switc
Switc
hing on climat
hing on climat e contr
e control
ol #
Set the air0ow toleve l 1 or higher via Jon
th e climate bar on the central display
or #
Press Ã, s,ror±.
Switc
Switc hing
hingo.
o.climat
climat e contr
e contr ol
ol #
Set the air0ow toleve l 0 via Ionthe cli-
mate bar on the central display
or #
Press j.
If climate control is switched o., the windo ws
may mist up more quickl y.Switch climate control
o. only brie0 y.
% Ifth e climate control is switched o. via
j, OFF OFFwill be shown on the climate bar. Switc
Switc
hing climat
hing climat e contr
e control
olon/o.
on/o. via t
via the r
he rear oper-
ear oper-
ating unit
ating unit Switc
Switc
hing on
hing on #
Press button 4.
or #
Set the air0ow toleve l 1 or higher using but-
to ns 3 and 5.
or #
Press buttons 2,6,8orC.
Switc
Switc hing
hingo.
o. #
Press button 4.
or #
Set the air0ow toleve l 0 using buttons 3and
5.
% Ifre ar climate cont rol is switched o. via but-
to n4, OFF OFF will be show n onthere ar displ ay. Calling up t
Calling up t
he air conditioning menu using t
he air conditioning menu using t he cli-
he cli-
mat
mat e bar
e bar The air conditioning menu can be called up via
the
air conditioning line. The air conditioning line is alw
ays shown on the lo wer edge of the central
displa y. #
Select theClimate menu entry inthe air con-
ditioning line.
The First row of seats menu is opened.
Jum Jum ping dir
ping dir ectl
ectly t
y to t
o t he
he Air quality menu
menu #
Select theG /ne particle status display in
th e climate bar.
The Air quality menu is opened. An animation
of the automatic air cleaning taking place is
shown.
% The /ne particle status displ ayis on the home
screen next tothete mp erature display on the
ri ght and it informs you of the cur rent particu-
late le vels inside and outside of theve hicle.
The measurement values are shown with the
µg/m 3
units (microg rammes per cubic
metre).
St rong acceleration aTer longer parking periods
will lead toa de tach ment of the dust co vering the
ve hicle. This dust measured bythe PM2.5 sensor
might lead toa short rise of outside values. Climate control
191
191

Defr
Defr
os
osting tting t he windscr
he windscr een via t
een via the climat
he climat e bar
e bar Switc
Switc
hing on
hing on #
Press ¬onthe climate bar on the central
displa y.
Switc
Switc hing
hingo.
o. #
Press ¬, Ãorj onthe climate bar
on the central display
or #
set the air0ow to0.
% When the defrost function is activated, some
functions (e.g. thete mp erature setting) are
automatically deactivated. A
A
ctiv
ctiv ating/deactiv
ating/deactiv ating t
ating the A/C function via t
he A/C function via t he
he
multimedia syst
multimedia syst em
emMultimedia system:
4 Climate menu 5
First row of seats
Depending on theex tern al conditions, impr oved
cooling and dehumidi/cation of the interior air are
suppor ted when the A/C function is activated. #
Select A/C(A/C). Se
Se
tting climat
tting climat e contr
e control t
ol to aut
o aut omatic mode via t
omatic mode via t he
he
climat
climat e bar
e bar In automatic mode,
the set vehicle interior tem-
perature is controlled automatically and main-
ta ined at a constant le velby the air suppl y. #
Press AUTO onthe climate bar on the central
displa y.
% You can increase or reduce the air0ow by
pressing Konthe climate bar on the cen-
tral displa y. #
T To switc
o switc h t
h to manual oper
o manual oper ation:
ation:switch o.
automatic mode or adjust an aspect of air dis-
tribution, e.g. P. Se Se
tting air dis
tting air distr tribution using t
ibution using t he air conditioning
he air conditioning
menu
menu Multimedia system:
4 Climate menu #
Select First row of seats orSecond row of
seats. #
Toset the air distribution: select ¯,P
or O. #
Set the air0o w.
% When the air conditioning system is switched
on, at least one zone is alw ays active. Ho w-
ev er, se veral air distribution options can be
selected at the same time, forex ample toset
th e climate control forth e interior and the
fo ot we lls simultaneousl y.The windsc reen air
conditioning ¯can only be selected for
th e /r st ro w of seats. When automatic mode
is active, the buttons for setting the air distri-
bution are automatically deactivated. When
th e air conditioning system is switched o.,
th e buttons remain operable and the last set-
ting is sa ved. Se Se
tting t
tting t he f
he foo
ootw
twell t
ell t em
emper
per ature
ature Multimedia system:
4 Climate menu #
Select ^and set the desired foot we llte m-
perature using the slider. 192
192
Climate control

Se
Se
tting r
tting r ear climat
ear climat e contr
e control using tol using t he air condi-
he air condi-
tioning menu
tioning menu Multimedia system:
4 Climate menu
Se
Se tting t
tting t he t
he tem
emper
per ature
ature #
Select Second row of seats. #
Set thete mp erature.
Se
Se tting t
tting t he
heair0ow
air0ow #
Select Second row of seats. #
Set the air 0ow with sorr.
Contr
Contr olling t
olling t he r
he rear climat
ear climat e contr
e control aut
ol automatically
omatically #
Select AUTO.
% When the defrost function is activated, some
functions (e.g. thete mp erature setting) are
automatically deactivated. Todeactivate the
defrost function, either press ¬,Ã
or j or set the air volume toleve l 0
(/ page 192).
Deactiv
Deactiv ating r
ating rear climat
ear climat e contr
e control
ol #
Select REAR OFF. Switc
Switc
hing t
hing t he sync
he sync hr
hronisation function
onisation function on/o.
on/o.via
via
t
t he air conditioning menu
he air conditioning menu Multimedia system:
4 Climate menu
Climate control can be set centrally using the syn-
ch ronisation function. The driver's settings for
te mp erature, air0ow and air distribution will be
adop ted automatically for all climate zones. #
Select First row of seats. #
Select SYNC(SYNC). Demis
Demisting t
ting the windo ws
he wind ows W
W
indow
indow s mist
s mist ed up on t
ed up on t he inside
he inside #
Press Ãonthe climate bar on the central
displa y. #
Ifth e windo wsremain misted up: press ¬
on the climate bar on the central displa y.
W
W indow
indow s mist
s mist ed up on t
ed up on t he outside
he outside #
Switch on the windscreen wipers. #
Press Ãonthe climate bar on the central
displa y. Switc
Switc
hing air
hing air -r
-recir
ecirculation mode culation mode on/o.
on/o. #
Press gonthe climate bar on the central
displa y.
The interior air will be recirculated.
Air-recirculation mode will automatical lyswitch to
fresh air mode aTer a while.
% If air-re circulation mode is switched on, the
wind ows may mist up more quickl y.Switch on
ai r-re circulation mode only brie0y. Switc Switc
hing air
hing air -r
-recir
ecir culation mode
culation mode on/o.
on/o.via t
via the
he
multimedia syst
multimedia syst em
em R
R
eq
eq uir
uir ements:
ements:
R Vehicles with /ne particle pre/lter
Multimedia system: 4 Climate menu 5
Air quality #
Press gonthe upper display area of the
climate bar.
The interior air will be recirculated.
Air-recirculation mode will automatical lyswitch to
fresh air mode aTer a while. Clima
tecont rol
193
193

or switch o.
the preselection of the time in
th e climate menu.
If present, thefo llowing functions will remain
active once theve hicle has been star ted:
R Seat heating
R Seat ventilation
R Panel heating
Depending on theve hicle's equipment, thefo llo w-
ing functions will also be adjusted during pre-
entry climate control if they have already been
switched on during regular vehicle operation:
R Frag rancing
R Ionisation A A
ctiv
ctiv ating/deactiv
ating/deactiv ating immediat
ating immediat e pr
e pre-entr
e-entr y cli-
y cli-
mat
mat e contr
e contr ol
ol &
W
WARNI NG
ARNI NGDanger tolife due toexposure
to extreme heat or cold in theve hicle
If people, particular lych ildren, are exposed to
ex treme temp eratures over an extended period of time,
there is a risk of serious injury
or danger tolife. #
Never lea vepersons, children in particu-
lar, unattended in theve hicle. &
W
WARNING
ARNING Risk of burns due torepeatedly
switching on the seat heating
Re peatedly switching on the seat heating can
cause the seat cushion and seat backrest pad-
ding tobecome very hot.
In particular, the health of persons with limited
te mp erature sensitivity or a limited ability to
re act tohigh temp eratures may be a.ected or
th ey may even su.er burn-like injuries. #
Do not repeatedly switch on the seat
heating. To
protect against overheating, the seat heating
may be temp orarily deactivated aTer it has been
switched on repeatedl y.
R
R eq
eq uir
uir ements (plug-in h
ements (plug-in h ybr
ybrid)
id)
R theve hicle is switched o.. %
The immediate pre-ent ryclimate cont rol is
only available for plug-in hybrids or vehicles
with a 48-V on-board elect rical system.
Air conditioning of theve hicle interior can con-
tinue for up to50 minutes, e.g. if the journey is
inter rupted. 200
200
Climate control

A
A
ctiv
ctiv e Lane K
e Lane K eeping Assist
eeping Assist
Ac tivating/deactivating.......................... 304
Ac tivating/deactivating thewa rning....... 304
Fu nction................................................ 302
Setting the sensitivity.............................3 04
System limits......................................... 302
Tr ailer operatio n..................................... 302
A A ctiv
ctiv e P
e Par
arking Assist
king Assist
Au tomatic braking function................... .326
Cross tra1c warning.............................. 331
Drive Away Assist................................... 330
Exiting a parking space.......................... 325
Fu nction................................................ 321
Manoeuvring brake function................... 332
Pa rking.................................................. 323
Pa using.................................................. 326
System limitations..................................3 21
A A ctiv
ctiv e Speed Limit Assist
e Speed Limit Assist , Driving system
Display................................................... 281
Fu nction................................................ 281
A A ctiv
ctiv eSt
e St eer
eer ing Assist
ing Assist
Ac tivating/deactivating.......................... 286
Ac tive Emer gency Stop Assist................ 286
Ac tive Lane Change Assist..................... 288
Fu nction................................................ 284 System limits......................................... 284
A
A ctiv
ctiv e
eTr
Tra1c
a1c Jam Assist
Jam Assist
Fu nction................................................ 284
A
A dap
dap tiv
tive br
e br ak
ake lights
e lights .................................... 273
A
A dap
dap tiv
tive Highbeam Assis
e Highbeam Assist Plus t Plus, High
beam Function................................................ 176
Switching on/o..................................... 177
A
A dBlue
dBlue ®
®
,Ad ditives (AdBlue ®
), BlueTEC,
DeNOx agent, Reducing agent
Ad ditives................................................ 486
Capacity................................................ 487
No tes..................................................... 239
Purit y.....................................................4 86
To pping up............................................ .239
A A dditional door lock
dditional door lock.......................................92
A
A dditiv
dditiv es
es
Ad Blue ®
................................................ .486
Engine oil............................................... 487
Fu el....................................................... 484
Air conditioning menu Air conditioning menu Calling up..............................................1 91Air dis
Air distr
tribution
ibution
Setting (MBUX multimedia system)......... 192
Setting (THERMOTRONIC)......................1 89
Air v Air v ents
ents, Air vents, Vents
Ad justing (front).................................... .205
Ad justing (rear)...................................... 206
Glo vebox.............................................. .207
Air
Air -r
-recir
ecir culation mode (wit
culation mode (wit h
h/ne
/ne par
particle
ticle
pr
pr e/lt
e/lt er)
er)....................................................... 193
Air
Air -w
-wat
ater duct
er duct, Air inlet, Waterta nk
Ke eping free.......................................... 429
Airbag
Airbag, Occupant saf ety
Ac tivation................................................ 46
Belt airbag............................................... 50
Centre airbag (driver, front passenger)...... 53
Cushionbag.............................................. 53
Fr ont airbag (driver, front passenger)........ 53
Installation locations................................ 53
Knee airbag............................................. 53
Overview.................................................. 53
PA SSENGER AIR BAG indicator la mps...... 58
Pr otection................................................ 54
Re ar airbag............................................. .53
REAR SEAT AIR BAG indicator lamps........ 62 592 592
Index

Information...........................................
.125
Moving the front passenger seat into
th ech au.eur position........................... .126
Moving the front passenger seat into
th e normal position................................ 130
Child safe
Child safe ty lock
ty lock
Re ar door................................................ .85
Re ar side wind ows................................... 86
Child seat
Child seat, Occupant saf ety
Appro val categories................................. 71
At tach ing (no tes)..................................... .70
Basic instructions.................................... 65
Fr ont passenger seat (no tes).................... 82
Fr ont passenger seat (without auto-
matic airbag shuto.)............................... .82
ISOFIX/i-Size (/tting)...............................74
No tes on risks and danger s...................... 66
Re ar airbag............................................. .77
Re commendations forch ild restraint
systems................................................... 69
Seats suitable for belt-secured child
re straint systems..................................... 79
Seats suitable for i‑Size child restraint
systems................................................... 74 Seats suitable
for ISOFIX child
re straint systems..................................... 72
Securing on the co-driver seat..................83
Securing on there ar seat......................... 81
To pTe ther................................................ 76
Childr Childr en
en
Av oiding dangers in theve hicle............... .66
Basic instructions.................................... 65
Chock
Chock, Chock Storage location..................................... 469
City lighting
City lighting.................................................. 174
Climat Climat e contr
e contr ol
ol
Ac tivating/deactivating.......................... 191
Ac tivating/deactivating (rear operat-
ing unit)................................................. 191
Ac tivating/deactivating the A/C func-
tion (MBUX multimedia system).............. 192
Ac tivating/deactivating the frag rance
system................................................... 194
Ac tivating/deactivating the synchro-
nisation function (MBUX multimedia
system).................................................. 193
Air-recirculation mode (with /ne parti-
cle pre/lter)...........................................1 93Au
tomatic control................................. .192
Calling up the air conditioning menu....... 191
Defrost.................................................. 192
Demisting the windscreen
(THERMOTRONIC).................................. 189
Demisting windo ws................................ 193
Fi ne particle status displa y..................... 191
Fr ont air vents........................................ 205
Glo vebox air vent.................................. 207
Immediate pre-entry clima tecont rol....... 200
Information on the windscreen heater.... 196
Inserting/re movingthe 0acon (fra-
gr ance system)...................................... 195
Ionisatio n.............................................. .194
No te...................................................... 189
Pre-entry climate control at depa rture
time....................................................... 198
Pre-entry climate control when the
ve hicle is unloc ked................................. 196
Re ar air vents......................................... 206
Re ar operating unit................................ 190
Re sidual heat......................................... 194
Re sidual heat (rear operating unit)......... .194
Setting (MBUX multimedia system)......... 191
Setting the air distribution
(THERMOTRONIC).................................. 189 596 596
Index