stop start MERCEDES-BENZ S-CLASS SALOON LONG 2021 Owners Manual

1
Light switch →
169
2 Steering wheel gearshiT paddles →
233
3 Combination switch →
171
4 Driver displ ay →
345
5 DIRECT SELECT le ver →
231
6 ü Start/stop button →
211
è ECO start/s top function →
220
7 Central display →
361
8 Glovecompartment →
150
9 Stow age compartment →
150
A Switch panel for:
÷ DYNAMIC SELECT button →
228
c Active Parking Assist →
323
& Switches the stationary heater on/o. →
201
\ Quick vehicle access
ú Fingerprint sensor →
361 Ü
Switches the MBUX multimedia system
on/o. →
361
a Switches sound on/o. →
361
ø Adjusts thevo lume →
361
B £ Hazard warning light system →
172
C Control panel forth e MBUX multimedia system →
368
D Adjusts the steering wheel →
140
ý Switches the steering wheel heater
on/o. →
141
E Control panel:
Driver display →
345
I Active Distance Assist DISTRONIC and
va riable limi ter →
279
F Diagnostics connection →
37
G M Opens the bonnet →
424
H ! Electric parking brake →
262 At
a glance – Cockpit
7 7

&
W
WARNI NG
ARNI NGRisk of becoming trapped
despite reve rsing function
In particular, there ve rsing function does not
re act tosoT, light and thin objects, e.g. /n-
ge rs. #
When closing thero ller sunblind, make
sure that no body parts are in thera nge
of mo vement. #
If someone is trapped, release the con-
trol panel immediatel y.
or #
Touch the control panel during automatic
closing.
The closing process will be stopped. A A
ut
ut omatic functions of t
omatic functions of t he sliding sunr
he sliding sunroof
oof %
The term "sliding sunroof" refers to the pano-
ra ma sliding sunroof.
The sliding sunroof will be closed automatically
when theve hicle has been switched o. in thefo l-
lowing situations:
R if it starts torain Ra
in is de tected byara in sensor on the wind-
screen.
R inextreme temp eratures
R aTer a cer tain time (depending on the on-
board electrical system voltage)
R ifth ere is a malfunction in the po wer supply
The sliding sunroof will rise at there ar in order to
continue ventilating theve hicle interior.
If th e sliding sunroof is obstructed during an auto-
matic closing procedure, thero of will be opened
again slightl y.The automatic function forth e slid-
ing sunroof and the side windo wswill then be
deactivated.
R R ain closing function when dr
ain closing function when dr iving
iving
V
V ehicles wit
ehicles wit h a panor
h a panorama sliding sunr
ama sliding sunr oof:
oof:if it
starts torain, thera ised sliding sunroof will auto-
matically be lo wered while theve hicle is in
motion.
A A ut
ut omatic low
omatic low er
ering function
ing function
V
V ehicles wit
ehicles wit h a panor
h a panorama sliding sunr
ama sliding sunr oof:
oof:ifthe
sliding sunroof is raised at there ar, it will auto-
matically be lo wered slightly at higher speeds. At
low speeds, it will be raised again automaticall y. &
W
WARNI NG
ARNI NGRisk of becoming trapped by
automatic lo wering of the sliding sunroof
At higher speeds, thera ised sliding sunroof
will automatically be lo wered slightly at the
re ar. #
Make sure that nobody reaches into the
sliding sunroof's range of mo vement
while theve hicle is in motion. #
If someone becomes trapped, touch the
cont rol panel. R
R
ectifying pr
ectifying pr oblems wit
oblems with t
h the sliding sunr
he sliding sunr oof
oof &
W
WARNING
ARNING Risk of becoming trapped or
fata l injuries when the sliding sunroof is
closed again
If yo u close the sliding sunroof again immedi-
ately aTer it has been bloc ked or reset, the
sliding sunroof will close with increased or
maximum forc e.
There is a risk of becoming trapped or even of
fata l injuries! Opening and closing
111 111

#
Use automatic operation tofully open and
th en close there ar roller sunblind. R
R
oller sunblinds
oller sunblinds Ext
Ext
ending or re
ending or retr
tracting t
acting t he r
he roller sunblinds on t
oller sunblinds on t he
he
r
r ear side windo ws
ear side windo ws The
roller sunblinds forth ere ar side wind ows can
be operated with the buttons forth e side win-
do ws. 1
Rear leT side wind ow/roller sunblind
2 Rear right side window /roller sunblind #
T
To close fully
o close fully :
:pull the cor responding button
when the side window is closed or is in the
process of closing. #
T
To open fully
o open fully :
:press the cor responding button. Ext
Ext
ending or re
ending or retr
tracting t
acting t he r
he rear
ear-windo
-windo w r
w roller sun-
oller sun-
blind
blind &
W
WARNING
ARNING Risk of becoming trapped when
ex tending or retracting thero ller sunblind
Body parts may become trapped in thero ller
sunblind's range of mo vement. #
Ensure there are no body parts in the
ra nge of mo vement. #
If someone becomes trapped, brie0y
press the button again.
The opening or closing process will
brie0y be stopped. The roller sunblind
will then return toits starting position. Ext Ext
ending or re
ending or retr
tracting fr
acting fr om t
om the dr
he dr iv
iver's seat
er's seat
* NO
NOTE
TEDamage caused byobjects Objects can cause
thero ller sunblind tomal-
function. #
Do not store objects on there ar shelf. #
Ensu rethat thero ller sunblind can mo ve
freel y. Opening and closing
113
113

#
a)Tapth ewa rning message onthe cen-
tral displa y.
or #
b) Press a memory function position but-
ton or a seat adjustment switch on the
driver's door.
The adjustment process will be stopped. Multimedia system:
4 © 5
Comfort 5
Seat
5 Position seat automatically
Manuall Manuall y adjus
y adjusting dr
ting driv
iver's seat and st
er's seat and st eer
eering
ing
wheel position t
wheel position t o body size
o body size
The vehicle calculates a suitable driver's seat and
steering wheel position on the basis of the driver's
body size and sets this directl y. #
T
To se
o se t t
t the unit of measur
he unit of measur ement
ement::select cmor
ft/in. #
Set the size using the scale. #
Select Start positioning .
The driver's seat and steering wheel position
is adjusted tothe body size that has been set. %
You can also con/gure these settings via the
Mercedes me user account foryo ur user pro-
/le. By synchronising the pro/les in theve hi-
cle and the Mercedes me connect pro/les,
yo u can car ryove rth ese settings foryo ur
ve hicle. Further information about synchronis-
ing user pro/les .
A A ut
ut omaticall
omaticall y adjus
y adjusting drting driv
iver's seat and st
er's seat and st eer
eering
ing
wheel position t
wheel position t o body size
o body size
If th eve hicle has the Interior Assistant, the driv-
er's body size can be de term ined automatically
using the 3D laser cameras in theove rhead con-
trol panel. #
Wait until the Interior Assistant has de ter-
mined the body size. #
Select Start positioning .
The driver's seat and steering wheel position
is adjusted tothe body size that has been
de term ined.
% Further information on the Interior Assistant:
(/ page 371)
% Ifth e driver's seat and steering wheel position
calculated bytheve hicle is not practical or comfor
table, it can be manually adap ted at
any time via the control buttons.
The outside mir rors are not set via this func-
tion. Instead, they have tobe set manually via
th e operating switches. Se Se
tting aut
tting aut omatic adjus
omatic adjustment of t tment of the lat
he later
eral sup-
al sup-
por
por t (activ
t (activ e multicont
e multicont our seat)
our seat) Multimedia system:
4 © 5
Comfort 5
Seat #
Select Dynamic multicontour seat.
Wi th th is function, the lateral support of the active
multicontour seat is automatically adjusted tothe
driving and cornering dynamics of theve hicle. #
Select the desired setting. Ov
Ov
er
ervie
vie w of massag
w of massag e pr
e progr
ogrammes
ammes R
Hot Relaxing back Based on hot stone mas-
sage, the prog ramme combines heat and mas-
sage. It starts bymassaging the bac k.In addi-
tion, warm pressure points become noticea-
ble, starting in the pelvic area. 136
136
Seats and st
owing

Dr
Dr
iving
iving N
No
ot
tes on plug-in h
es on plug-in h ybr
ybrids
ids N
No
ot
tes on plug-in h
es on plug-in h ybr
ybrid oper
id oper ation
ation &
W
WARNING
ARNING Risk ofchemical burns and poi-
soning from damaged high-voltage battery
If th e housing of the high-voltage battery has
been damaged, electrolyte and gases may
leak out. #
Avoid contact with the skin, eyes or
clo thing. #
Immediate lyrinse electrolyte splashes
o. with water and seek medical atten-
tion straight away. &
D
DAN
AN GER
GER Risk of explosion from excessive
internal pressure of the high-voltage bat-
te ry
Flammable gas may escape and ignite in the
eve nt of a vehicle /re. #
Stop thech arging process immediately
in case of unusual odours, smoke or
burn mar ks. #
Leavethe danger zone immediatel y.
Secure the danger zone at a su1cient
distance. #
Call the /re brigade. The
hybrid system combines a combustion engine
with electric mo tors. In drive prog ram A, the
hy brid system selects the most suitable drive type
according tothe driving conditions and the dis-
ta nce.
Cha racteristics when theve hicle is at a standstill:
R The combustion engine is generally switched
o..
R Idle speed only occurs in cer tain instances.
Characteristics when starting theve hicle:
R Ifth e high-voltage battery is su1ciently
ch arge d, theve hicle can be star ted with the
electric drive without the combustion engine
(noiseless start). R
Ifth e high-voltage battery forth e electrical
drive is not su1ciently charge d or the operat-
ing temp erature of the combustion engine has
not been reached, theve hicle can start with
th e combustion engine.
% Depending on the system, it may happen that
ev en though the high-voltage battery is
ch arge d, electric mode has restric ted or no
av ailabilit y.Once the combustion engine has
been operated for long enough and ambient
conditions permit, electric mode is again
av ailable without restriction.
Charac teristics wi thmoderate po wer output
re qu ests:
R The combustion engine is switched o. as
oTen as possible during the journe y.
R The vehicle can, depending on the drive pro-
gr am selected and the state of charge , be
accelerated elect rically up tospeeds of
appr oximately 140 km/h. ATer that, the com-
bustion engine is switched on. 208 208
Driving and parking

th
e tra1c conditions until braking po wer has been
fully restored. F
F
unction of r
unction of r ear axle st
ear axle steer
eering
ing %
This function is an on-demand feature
(/ page 26).
The rear axle steering is an elect romechanical
auxiliary steering on there ar axle which adjusts
th e steering of there ar wheels according tothe
position of the front wheels, depending on the
speed. This results in greater manoeuvrability and
impr oved driving stability, e.g. when cornering.
Re ar axle steering has thefo llowing characteris-
tics:
R reduced steering e.ort and turning circle
re sulting in reduced parking e.ort
R impr oved driving stability, e.g. when cornering
R more direct steering resulting in impr oved
handling of theve hicle
Obser vethe no tes on snow chains and snow
ch ain mode (/ page 462). EC
EC
O st
O st ar
art/st
t/st op function
op function EC
EC
O st
O st ar
art/st
t/st op function
op function
% Depending on the engine, the ECO start/s top
function is not available in all drive prog rams.
Obser vethe status display in the driver's dis-
play forth is.
% Plug-in h
Plug-in h ybr
ybrid:
id:This function is not available.
The engine is switched o. automatically in thefo l-
lowing situations if all vehicle conditions for an
automatic engine stop are met:
R you brake theve hicle toa standstill in trans-
mission position hori.
R V
Vehicles wit
ehicles with a 48 V on-boar h a 48 V on-boar d electr
d electrical sy
ical sys-
s-
t
t em:
em: you depress the brake pedal when tr avel-
ling at a low speed.
If th e system has de tected one of thefo llowing
situations, the engine will not stop:
R you stop at a stop sign and there is no vehicle
in front of you.
R theve hicle that stopped in front of you starts
up again. R
you manoeuvre, turn the steering wheel
sharply or engage reve rsege ar.
% Ifth e system de tects an intelligent stop inhibi-
to r,fo rex ample, a stop sign, the engine will
not stop.
If yo u activate the HOLD function or engage
th e park position j,the engine can be
switched o. in spite of an intelligent stop
inhibitor.
The engine restarts au tomatically in thefo llowing
cases:
R you engage transmission position hork.
R you depress the accelerator pedal.
R theve hicle requ ires an automatic engine start.
R youre lease the brake pedal.
R V Vehicles wit
ehicles wit h a 48 V on-boar
h a 48 V on-boar d electr
d electrical sy
ical sys-
s-
t
t em:
em:
- youre lease the brake pedal on a downhill
gr adient and theve hicle does not roll.
- theve hicle rolls on a downhill gradient and
does not automatically enter glide mode at
20 km/h. Driving and parking
219 219

ECO start/s
top function symbols in the driver's
displa y:
R the symbol è(gre en) appears when the
ve hicle is at a standstill: the engine was
switched o. bythe ECO start/s top function.
R the symbol ç(yellow) appears when the
ve hicle is at a standstill: not all vehicle condi-
tions for an engine stop ha vebeen met.
R neither the symbol ènorç appears
when theve hicle is at a standstill: an intelli-
ge nt stop inhibitor was de tected, e.g. a stop
sign.
R the symbol sappears: the ECO start/s top
function is deactivated or there is a malfunc-
tion.
If th e engine was switched o. bythe ECO start/
stop function and you lea vetheve hicle, a warning
to ne sounds and the engine is not restar ted. In
addition, thefo llowing display message appears in
th e driver's displa y:
Vehicle is operational Switch off vehicle before
exiting If
yo u do not switch o. theve hicle, it is automati-
cally switched o. aTer thre e minutes.
Deactiv Deactiv ating or activ
ating or activ ating t
ating the EC
he ECO st
O star
art/st
t/st op
op
function
function #
Press button 1.
A display appears in the driver display when
switching the ECO start/s top function o./on. %
A continuous sdisplay appears in the
driver display while the ECO start/s top func-
tion is deactivated. EC
EC
O displa
O displa y function
y function The ECO display sho
wsanevaluation of your driv-
ing style on the driver's display depending on the
situation. This enables youto check the e1ciency
of your driving style and adjust it if necessar y.The
ECO display menu shows a ball 2that will roll
fo rw ards or backwards on a st ylised road in the
direction of tr avel according tothe driving charac-
te ristics. 220
220
Driving and pa
rking

vo
ltage battery is exhaus ted and theve hicle is
th en driven bythe combustion engine.
Switc
Switc hing t
hing t he r
he rese
eset displa
t displa y
yon/o.
on/o. #
Activate or deactivate Ask when starting.
% This function must be acti vatedfo r each user
pro/le separatel y.Only when this function is
activated will the drive prog ram and ECO
start/s top setting forth e pr evious journey be
sa vedfo rth ere specti veuser pro/le.
% This function must be activated for each user
pro/le separatel y.The drive prog ram forthe
re specti veuser pro/le of the last driver is only
stored if this function is activated.
F
F unction on:
unction on: the next time theve hicle is star ted a
prom ptappears asking whe ther the last active
drive prog ram should be restored.
F
F unction on:
unction on: the next time theve hicle is star ted a
prom ptappears asking whe ther the last active
drive prog ram should be restored. If the ECO
start/s top function was deacti vated, an additional
prom ptappears asking if the function should
re main deactivated. %
The prom ptappears only if the pr eviously
active settings deviate from the standard set-
tings.
F
F unction
unction o.:
o.:the next time theve hicle is star ted
th eA drive prog ram is set automaticall y.The
ECO start/stop function is activated automati-
call y.
F F unction
unction o.:
o.:ifth eÎ drive prog ram wa sthe
last one active, and all requ irements forth e drive
prog ram are ful/lled, this will be automatically
selected the next time theve hicle is star ted. If
ano ther prog ram wa s active, then them drive
prog ram is set automaticall y. Displa
Displa
ying v
ying vehicle data
ehicle data Multimedia system:
4 © 5
Hybrid #
Select Vehicle.
The vehicle data is displ ayed. Displa
Displa
ying v
ying vehicle data
ehicle data Multimedia system:
4 © 5
Info #
Select Vehicle.
The vehicle data is displ ayed. Displa
Displa
ying engine data
ying engine data Multimedia system:
4 © 5
Hybrid #
Select Engine.
The engine data is displa yed.
% The actual (maximum) values that can be ach-
ie ve dfo r engine output and engine torque
may deviate from the certi/ed values within
th e count ry-speci/c guidelines for permissible
to lerances (basis: UN-ECE No. 85 or count ry-
speci/c guidelines).
In0uencing variables that can in0uence this
are, forex ample:
R Sea le vel
R Fuelqu ality Driving and parking
229 229

T
T
opping up A
opping up A dBlue
dBlue®
®
Mercedes-Benz recommends topping up AdBlue ®
at a /lling pump. If no AdBlue ®
/lling pump is
av ailable, you can also top up AdBlue ®
using a
canister. #
Screw onthefa stener of AdBlue ®
re/ll canis-
te r4. #
Screw disposable hose 3onto the opening
of Ad Blue ®
re/ll canis ter4 until hand-tight. #
Screw disposable hose 3onto the /ller neck
of theve hicle until hand-tight. #
LiT up and tip AdBlue ®
re/ll canis ter4.
The /lling process stops when theAd Blue ®
ta nk is comple tely full.
Ad Blue ®
re/ll canis ter4 can be remo ved
when it has been only partial lyem ptied. #
Unscr ewand close disposable hose 3and
Ad Blue ®
re/ll canis ter4 inreve rse order. #
Replace AdBlue ®
/ller cap 2and turn it
clo ckwise until it audibly engages. #
Close fuel /ller 0ap 1. #
Switch on theve hicle for at least 60 seconds.
% Ifth eve hicle could not be star ted as the
Ad Blue ®
tank was em pty, it can take up to
60 seconds forth ere /ll tobe de tected. #
Start theve hicle.
% Avoid storing AdBlue ®
re/ll con tainers perma-
nently in theve hicle. Char
Char
ging t
ging t he high-v
he high-v olt
oltag
age batt
e batt er
ery (plug-in
y (plug-in
h
h ybr
ybr id)
id) N
No
ot
tes on c
es on c har
harging t
ging t he high-v
he high-v olt
oltag
age batt
e batt ery
ery *
N
NOOTE
TE High-voltage battery damage due to
leaving theve hicle idle for lengt hyperiods
of time Lithium-ion batteries
experience a natural self-
dischar ge.
Exhausti vedischarging can therefore occur if
th eve hicle is idle for se veral months. This can
damage the high-voltage batter y. #
Toavo id damage, please obser vethefo l-
lowing recommendations when handling
th e high-voltage batter y. *
N
NO
OTE
TE Accelerated ageing of the high-volt-
age battery As a
result of its basic characteristics, the
storage capacity of and the amount of energy
av ailable from the high-voltage battery
decrease over the course of its life. Due to Driving and parking
241
241

Combo 2
vehicle soc ket #
Press the centre rear section of soc ket 0ap
1 and swing the soc ket 0ap forw ards and
open.
The % indicator lamp 3and upper status
displ ay4 light up white. %
When theve hicle is switched on (the õ
displ ayis lit in the driver's display), soc ket 0ap
1 cannot be opened. #
Press catch 7totheright and fold up soc ket
co ver2.
% Vehicles with a vehicle soc ket combo requ ire
only connection 6forth ech arging cable
connector. Open only the upper part of soc ket
co ver2. #
Tocharge at a mains soc ket, insert the mains
plug into the mains soc ket of theex tern al
po we r source as far as it will go. #
Insert thech arging cable connector into vehi-
cle soc ket connection 6tothe stop. If the
wa llbox/charging station is not equipped with
a ch arging cable, inse rtthe plug of theve hi-
cle's charging cable into thewa llbox/charging
station soc ketto the stop.
Make sure that thech arging cable is not taut
when inser ted.
The # indicator lamp 5and lo wer status
display 40ash orange and, as soon as the
high- voltage battery is charge d, green. %
When thech arging sequence forth e ambient
lighting is activated, the ambient lighting lights
up for appr oximately 30 seconds as with the
# indicator lamp 5(/ page 179).
When thech arging cable is connected totheve hi-
cle, theve hicle cann otbe star ted or mo ved.
At the start of thech arging process, thech arge
le ve l display is shown in the driver's display with a
ch arging prediction. The charging prediction
re fers to the time at which the high-voltage bat-
te ry will be fully charge d.
% Depending on thete mp erature, thefa n and
bat tery cooling system may audibly switch on
during thech arging process.
% Ifth eve hicle is idle for lengt hyperiods and
connected tothe mains suppl y,the high-volt-
age battery will be rech arge d automatically as
needed or when electrical consumers are
activated (e.g. the pre-entry climate control). 252 252
Driving and parking