2021 MERCEDES-BENZ S-CLASS SALOON LONG heater

#
Vehicles with a 48-V on-board elect rical sys-
te m: press button 1.
The red or blue indicator lamp on button 1
will light up or go out. #
Plug-in hybrid: press &onthe climate bar
of the central displa y.
The red or blue indicator lamp below &on
th e climate bar on the central display will light
up or go out. #
Set thete mp erature using the ar rows w
on the climate bar on the central displa y.
The colours of the indicator lamp ha vethefo llo w-
ing meanings (plug-in hybrid):
R Blue:
Blue: Ventilation or cooling mode is switched
on.
R R
Red:
ed: Heating mode is switched on.
The colours of the indicator lamp ha vethefo llo w-
ing meaning (vehicles with a 48 V on-board elec-
trical system):
R Blue: Blue: Ventilation or cooling mode is switched
on.
R R
Red:
ed: Heating mode is switched on. R
Y
Yello w:
ello w:the departure time is preselected. S
S
t
tationar
ationar y heat
y heater/v
er/ventilation
entilation S
S
t
tationar
ationar y heat
y heater/v
er/ventilation function
entilation function
% The following function is equipment-depend-
ent.
R The air inside theve hicle is heated or ventila-
te dto the set temp erature.
R The air inside theve hicle cann otbe cooled
down to temperatures below the outside tem-
perature.
R Ifth e outside temp erature changes, ventilation
mode automatically switches toheating mode
or heating mode automatically switches to
ve ntilation mode.
The stationary heate r andtheex haust gas outl et
are situated behind theright-hand front wheel. Switc
Switc
hing t
hing t he st
he stationar
ationar y heat
y heater/v
er/ventilation
entilation on/o.
on/o.
via t
via t he oper
he oper ating unit
ating unit &
D
DAN
AN GER
GER Risk of fatal injury due topoison-
ous exhaust gases
If th eta ilpipe is bloc ked or su1cient ventila-
tion is not possible, poisonous exhaust gases
such as carbon monoxide may enter theve hi-
cle. This is the case in enclosed spaces or if
th eve hicle gets stuck in sno w,forex ample. #
Always switch the stationary heater o. in
enclosed spaces without an air extrac-
tion system, e.g. in garage s. #
Keep theta ilpipe and the area around
th eve hicle free from snow when the
ve hicle or the auxiliary heating is run-
ning. #
Open a door or a roof hatch on the wind-
wa rdside of theve hicle toensure an
adequate supply of fresh air. Climate control
201
201

&
W
WARNI NG
ARNI NGRisk of /re due tohot station-
ary heater components and exhaust gases
Flammable materials such as lea ves, grass or
twigs may ignite. #
When the stationary heater is switched
on, make sure that:
R hot vehicle parts do not come into
contact with 0ammable materials.
R theex haust gas can 0ow out of the
stationa ryheater exhaust pipe unhin-
dered.
R theex haust gas does not come into
contact with 0ammable materials. *
N
NOOTE
TE Bat tery dischar gecaused bysta-
tionar y heater or stationaryventilation
ope ration Operating
the stationary heater or stationary
ve ntilation drains the batter y. #
ATer heating or ventilating theve hicle
twice, drive for a longer period of time. R
R
eq
eq uir
uir ements:
ements:
R The vehicle is /tted with the stationary heater
equipment.
R The outside temp erature is below 15°C.
R The fuel tank is su1cient lyfull.
% Ifth e /ll le vel of the fuel tank is too lo w,the
auxiliary heating mode may be restric ted. #
Set thete mp erature using the ar rows w
on the climate bar on the central displa y. #
Press button &.
The red or blue indicator lamp on button &
will light up or go out.
The colours of the indicator lamp ha vethefo llo w-
ing meanings:
R Blue: Blue: stationary ventilation is switched on.
R R
Red:
ed: the stationary heater is switched on.
R Y
Yello w:
ello w:the departure time is preselected.
The stationary heater/ventilation will switch o.
automatically aTer 50 minutes.
Oper Oper ation using t
ation using t he app:
he app:the stationary heater/
ve ntilation can also be ope rated via the Mercedes
me connect app. You can /nd fur ther information in
the separate Owner's Manual at https://
moba.i.daimler.com/mar kets/ece-r ow/baix/
ca rs/connectmeen_GB/#em otions/
St artsei te.html.
Se
Se tting t
tting t he st
he stationar
ationar y heat
y heater/v
er/ventilation via t
entilation via t he
he
multimedia syst
multimedia syst em
em
R
R eq
eq uir
uir ements:
ements:
R The vehicle is /tted with the stationary heater
equipment.
Multimedia system: 4 Climate menu 5
Stationary heater
Selecting t
Selecting t he depar
he departur
ture time
e time #
Select Time A, Time BorTime C.
Se
Se tting t
tting t he depar
he depar tur
ture time
e time #
Select Time A, Time BorTime C. #
Select the pen beside the time. #
Set a time. 202
202
Climate control

Se
Se
tting t
tting t he st
he stationar
ationar y heat
y heater/v
er/ventilation via
entilation via
r
r em ot
emot e contr
e contr ol
ol
R
R eq
eq uir
uir ements:
ements:
R The outside temp erature is below 15°C.
R The fuel tank is su1cient lyfull.
Switc
Switc hing on immediat
hing on immediat ely
ely #
Press and hold theu button. Se
Se
tting t
tting t he depar
he depar tur
ture time
e time #
Brie0y press theu button. #
Press the, or. button repeatedly
until the time tobe changed appears on the
displa y. #
Press theu and^ buttons simultane-
ousl y.
The Îsymbol on there mo tecont rol display
will 0ash. #
Press the, and. buttons toset the
desired departure time. #
Press theu and^ buttons simultane-
ousl y.
The new departure time will be stored.
Up tothre e departure times can be stored. #
T
To activ
o activ at
ate t
e t he depar
he depar tur
ture time:
e time: selectthe
desired departure time and press and hold
th eu button.
The Ísymbol, the departure time and,
depending on the selected departure time, the
letter A A, B , B or CCwill appear on the displa y. #
T
To deactiv
o deactiv at
ate t
e t he depar
he depar tur
ture time:
e time: selectthe
desired departure time and press and hold
th e^ button.
OFF OFF will appear on the displa y. #
T
To c
o c hec
hec k t
k the st
he st atus of t
atus of t he activ
he active st
e stationar
ationar y
y
heat
heat er
er:
:brie0y press theu button.
Switc
Switc hing
hingo.
o.immediat
immediat ely
ely #
Press and hold the^ button.
Ov
Ov er
ervie
vie w of t
w of t he r
he remot
emot e contr
e contr ol display
ol display s (st
s (station-
ation-
ar
ar y heat
y heat er/v
er/ventilation)
entilation) 1
Stationary ventilation switched on
2 Stationary heater switched on Climate cont
rol
203
203

3
Selected depa rture time
4 Remaining time forth e stationary heater/
ve ntilation (in minutes)
5 Stationary heater/ ventilation active
6 Departure time activated
7 Signal strength
Fu rther possible displ ays:
R T
Time:
ime: the activated departure time.
R Zer
Zero minut
o minut es:
es:theru nning time forth e station-
ary heater is extended because the engine has
not yetreached operating temp erature when it
is star ted.
R OFF:
OFF: the stationary heater/ventilation is
switched o..
R
R eplacing t
eplacing t he r
he remot
emot e contr
e contr ol batt
ol batter
ery (st
y (st ationary
ationary
heat
heat er)
er) &
D
DAN
AN GER
GER Risk of fatal injuries if batteries
are swallo wed
Batteries contain toxic and cor rosive subs tan-
ces. Swallow ing batteries may cause se vere
internal burns within two hours. There is a
risk of fatal injur y. #
Keep batteries out of there ach of chil-
dren. #
Ifth e co ver and/or lid of the battery
compartment does not close securel y,
do not use theke y and keep it away from
ch ildren. #
If batteries are swallo wed, seek medical
attention immediatel y. +
ENVIR
ENVIR
ONMENT
ONMENT AL NO
AL NOTE
TEEnvironmen tal
damage due toimproper disposal of bat-
te ries Batteries contain
toxic and corro-
sive substances. #
Ta
ke dischar ged batteries to a
qu ali/ed specialist workshop or toa col-
lection point for used batteries. R
R
eq
eq uir
uir ements:
ements:
R One CR2450 lithium battery
Mercedes-Benz recommends that you ha vethe
battery replaced at a quali/ed specialist work-
shop. #
Push a poin ted object into recess 1. 204
204
Climate cont
rol

#
Slide battery co ver2 backwards in the direc-
tion of the ar row. #
Insert new battery 3with the lettering facing
upwards. #
Slide battery co ver2 inthe opposite direc-
tion tothe ar row onto there mo tecont rol until
th e battery co ver engages.
Pr
Pr oblems wit
oblems wit h t
h the r
he r emot
emot e contr
e contr ol f
ol for t
or t he st
he st ation-
ation-
ar
ar y heat
y heat er/v
er/ventilation
entilation
F
F AIL
AIL ¨
¨appear
appear s on t
s on the r
he remot
emot e contr
e contr ol display
ol display
Po ssible cause:
R The signal transmission between the transmit-
te r and there ceiver is malfunctioning. #
Change your position in relation totheve hicle,
moving closer if necessar y.
F
F AIL appear
AIL appear s on t
s on the r
he remot
emot e contr
e contr ol display
ol display
Po ssible cause:
R The star ter battery is not su1ciently charge d. #
Char gethe star ter batter y. Po
ssible cause:
R The outside temp erature is higher than 15 °C. #
Use the stationary heater only if the outside
te mp erature is below 15 °C.
Po ssible cause:
R The fuel tank is not su1cient ly/lled. #
Refuel at the nearest /lling station.
F
F AIL
AIL ¯
¯ appear
appear s on t
s on the r
he remot
emot e contr
e contr ol display
ol display
Po ssible cause:
R There is a malfunction in the stationary heater. #
Have the stationary heater checked at a quali-
/ed specialist workshop. Air v
Air v
ents
ents A
A
djus
djusting t ting t he fr
he front air v
ont air v ents
ents &
W
WARNING
ARNING Risk of burns or frostbite due to
being too close tothe air vents
Ve ry hot or very cold air can 0ow from the air
ve nts. #
Make sure that all vehicle occupants
alw ays maintain a su1cient dis tance
from the air vents. #
If necessar y,direct the air0ow toano ther
area of theve hicle interior. To
guarantee the 0ow of fresh air thro ugh the air
ve nts into theve hicle interior, comply with thefo l-
lowing:
R Alwayske ep theve nts and ventilation grilles in
th eve hicle interior clear.
R Keep the air inlet grille free of residue build-up
(/ page 429). Climate cont
rol
205
205

#
Never lea vetheve hicle or, if present, the
stationa ryheater running in an enclosed
space without su1cient ventilation. &
W
WARNI NG
ARNI NGRisk of /re due to0ammable
material in the engine compartment or the
ex haust system
Flammable materials may ignite. #
Therefore, check regula rly th at there are
no 0ammable materials in the engine
compartment or on theex haust system. R
R
eq
eq uir
uir ements:
ements:
R theke y is in theve hicle and is recognised. #
ShiT the transmission toposition jori. #
Depress the brake pedal and press button 1
once. #
Ifth eve hicle does not start: switch o. non-
essential consumers and press but ton1
once. #
Ifth eve hicle still does not start and the dis-
play message Place the key in the marked
space See Owner's Manual also appears in th
e driver's displa y: starttheve hicle with the
ke y in the mar ked space (emer gency ope ra-
tion mode) (/ page 212).
% You can switch o. theve hicle while driving. To
do this, press button 1for about thre e sec-
onds or bypressing button 1thre e times
within thre e seconds. Be sure toobser vethe
saf ety no tes under "Driving tips"
(/ page 215).
Obser veany information rega rding display mes-
sages that can be displ ayed on the driver's dis-
pla y.
S
S t
tar
ar ting t
ting t he v
he vehicle wit
ehicle wit h t
h the ke
he key in t
y in t hestow
he st owage
age
com
com par
partment (emerg
tment (emerg ency oper
ency operation mode)
ation mode)
If th eve hicle does not start and thePlace the
key in the marked space See Owner's Manual
display message appears in the driver's displa y,
yo u can start theve hicle in emer gency ope ration
mode. #
Make sure that the cup holder 2is em pty. #
Remo vetheke y1 from theke yring. #
Place theke y1 inthe cup holder 2.
The vehicle will start aTer a short time.
When youre mo vethe, key1 from the cup
holder 2,theve hicle can be driven. For fur-
th er vehicle starts, ho wever,th eke y1 must
be located in the cup holder 2during the
entire journe y. #
Have theke y1ch ecked at a quali/ed special-
ist workshop. 212 212
Driving and parking

&
W
WARNI NG
ARNI NGRisk of accident due toincor-
re ct foot we ar
Incor rect foot we ar includes, forex ample:
R shoes with plat form soles
R shoes with high heels
R slippe rs
There is a risk of an accident. #
Alwayswe ar suitable foot we ar so that
yo u can operate the pedals safel y. &
W
WARNI NG
ARNI NGRisk of accident if theve hicle is
switched o. while driving
If yo u switch o. theve hicle while driving,
saf ety functions are restric ted or no longer
av ailable.
This may a.ect the po wer steering system and
th e brake forc e boosting, forex ample.
Yo u will need touse considerably more force
to steer and brake, forex ample. #
Do not switch o. theve hicle while driv-
ing. &
D
DAN
AN GER
GER Risk of fatal injuries caused by
ex haust gases
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Inhaling
th ese exhaust gases is hazardous tohealth
and leads topoisoning. #
Never lea vetheve hicle or, if present, the
stationa ryheater running in an enclosed
space without su1cient ventilation. &
W
WARNI NG
ARNI NGRisk of skidding and of an acci-
dent due toshiTing down on slippe ryroad
sur faces
If yo u shiT down on slippery road sur faces to
increase the engine braking e.ect, the drive
wheels may lose traction. #
Do not shiT down on slippery road sur fa-
ces toincrease the engine braking
e.ect. &
D
DAN
AN GER
GER Risk of fatal injury due topoison-
ous exhaust gases
If th eta ilpipe is bloc ked or su1cient ventila-
tion is not possible, poisonous exhaust gases
such as carbon monoxide may enter theve hi-
cle. This is the case if theve hicle gets stuck in
sno w,forex ample. #
Keep theta ilpipe and the area around
th eve hicle free from snow when the
ve hicle or the stationary heater is run-
ning. #
Open a wind owonthe side of theve hicle
fa cing away from the wind toensure an
adequate supply of fresh air. &
W
WARNING
ARNING Risk of accident due tothe
brake system overheating
If yo u lea veyour foot on the brake pedal when
driving, the brake system may overheat.
This increases the braking distance and the
brake system can even fail. #
Never use the brake pedal as a foot re st. 216
216
Driving and pa
rking

R
Speed
R Operating status of the engine
R Tra1c situation F
F
unction of t
unction of t he 4MA
he 4MATIC
TIC
4MATIC ensu resth at all four wheels are driven.
To ge ther with ESP ®
and 4ETS, 4MATIC impr oves
th e traction of your vehicle whene ver a driven
wheel spins due toinsu1cient traction.
If yo ufa ilto adapt your driving style, 4MATIC can
neither reduce therisk of an accident nor override
th e la wsof ph ysics. 4MATIC cannot take account
of road, weather and tra1c conditions. 4MATIC is
only an aid. You are responsible especially for
maintaining a safe distance from theve hicle in
front, forve hicle speed, for braking in good time
and for st aying in lane.
% In wintry road conditions, the maximum e.ect
of 4MATIC can be achie ved only if you use
winter tyres (M+S tyres), with snow chains if
necessar y. R
R
efuelling
efuelling R
R
efuelling t
efuelling t he v
he vehicle
ehicle &
W
WARNING
ARNING Risk of /re or explosion from
fuel
Fu els are highly 0ammable. #
Fire , naked 0ames, smoking and creating
spar ksmust be avoided. #
Before refuelling, switch o. theve hicle
and, if /tted, the stationary heater and
ke ep switched o. during /lling. &
W
WARNING
ARNING Risk of injury from fuels
Fu els are poisonous and hazardous toyour
health. #
Do not swallow fuel or let it come into
contact with skin, eyes or clo thing. #
Do not inhale fuel vapour. #
Keep children away from fuel. #
Keep doors and windo wsclosed during
th ere fuelling process. If
yo u or other people come into contact with
fuel, obser vethefo llowing: #
Immediate lyrinse fuel o. your skin with
soap and water. #
If fuel comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical atte ntion
immedia tely. #
Ifyo u swallow fuel, seek medical atten-
tion immediatel y.Do not induce vomit-
ing. #
Change immediately out of clo thing that
has come into contact with fuel. &
W WARNING
ARNING Risk of /re and explosion due
to electrostatic charge
Electrostatic charge can ignite fuel vapour. #
Before you open the fuel /ller cap or
ta ke hold of the pump nozzle, touch the
me tallic vehicle body. Driving and parking
235
235