2021 MERCEDES-BENZ S-CLASS SALOON LONG engine

&
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

#
Do not depress the brake pedal and the
accelerator pedal at the same time while
driving. *
N
NOOTE
TE Engine damage due toexcessively
high engine speeds The engine will be damaged if
you drive with
th e engine in theove rrev ving range. #
Do not drive with the engine in theove r-
re vving range. *
N
NOOTE
TE Causing wearto the brake linings by
permanently depressing the brake pedal #
Do not permanently depress the brake
pedal while driving. #
Touse braking e.ect of the engine, shiT
to a lo werge ar in good time. *
N
NOOTE
TE Damage tothe driv etra in and
engine when pulling away #
Do not warm upthe engine while the
ve hicle is stationar y.Pull away immedi-
atel y. #
Avoid high engine speeds and driving at
full thro ttle until the engine has reached
its operating temp erature. *
N
NOOTE
TE Damage tothe catalytic con verter
due tonon-combusted fuel The engine is not
running smoo thly and is mis-
/ring.
Non-combus ted fuel may getinto the catalytic
con verter. #
Only depress the accelerator pedal
slightl y. #
Have the cause recti/ed immediately at
a qu ali/ed specialist workshop. *
N NOOTE
TE Reduced battery life due tofrequent
short-distance trips The 12 V battery may not be su1cien
tly
ch arge d when theve hicle is used only for
short-dis tance trips. This reduces the life of
th e batter y. #
Drive longer distances regula rly to
ch arge the batter y. *
N
NO
OTE
TE Damage totheve hicle due tonot
observing the maximum permitted head-
ro om clearance If
th eve hicle height is greater than the maxi-
mum permitted headroom clearance, thero of
and other parts of theve hicle may be dam-
aged. #
Obser vethe signposted headroom clear-
ance. #
Ifth eve hicle height is greater than the
permitted headroom clearance, do not
enter. Driving and parking
217 217

#
Obser vethech anged vehicle height with
add-on roof equipment. N
No
ot
tes on dr
es on dr iving wit
iving with a r
h a roof load, tr
oof load, tr ailer or fully
ailer or fully
laden v
laden v ehicle
ehicle
When driving with a loaded roof luggage rack or
trailer as well as with a fully laden or fully occu-
pied vehicle, theve hicle's driving and steering
ch aracteristics change.
Yo u should bear thefo llowing in mind:
R Do not exceed the permissible roof load and
to wing capacity. Also obser vethete ch nical
data in the printed Owner's Manual.
R Evenly distribute thero of load, and place
heavy objects at the bottom. Also comply with
th e no tes on loading theve hicle
(/ page 148).
R Drive attentivel y,and avoid suddenly pulling
awa y,braking and steering as well as rapid
cornering.
Not
Not es on dr
es on dr iving on salt-tr
iving on salt-tr eat
eated r
ed r oads
oads
The braking e.ect is limited on salt-treated roads. Therefore, obser
vethefo llowing no tes:
R due tosalt build-up on the brake disks and
brakepads, the braking distance can increase
considerably or result in braking only on one
side
R maintain a much greater safe distance tothe
ve hicle in front
To remo vesalt build-up:
R brake occasionally while paying attention to
th e tra1c conditions
R carefully depress the brake pedal at the end of
th e journey and when starting the next jour-
ney
N
No ot
tes on aq
es on aq uaplaning
uaplaning
Aq uaplaning can take place once a cer tain
amount of water has accumulate d onthero ad
sur face.
Obser vethefo llowing no tes during heavy precipi-
ta tion or in conditions in whi chaquaplaning may
occur:
R reduce speed
R avoid tyre ruts R
avoid sudden steering mo vements
R brake careful ly
% Also obser vethe no tes on regula rly ch ecking
wheels and tyres (/ page 461).
N
No ot
tes on dr
es on dr iving t
iving thr
hrough w
ough w at
ater on t
er on t he r
he road sur-
oad sur-
f
f ace
ace
Wa ter which has entered into theve hicle can
damage the engine, electrics and transmission.
Wa ter can also enter the air intake of the engine
and cause engine damage.
Obser vethefo llowing if you must drive thro ugh
wa ter:
R The water,when calm, may only reach the
lo we r edge of theve hicle body.
R Drive at a maximum speed of 10 km/h; water
can otherwise enter theve hicle interior or
engine compartment.
R Vehicles tr avelling in front, or oncoming vehi-
cles, can create waves which may exceed the
maximum permissible dep thofthewa ter.
The braking e.ect of the brakes is reduced aTer
fo rd ing. Brake carefully while paying attention to218 218
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

%
Depending on theve hicle equipment, not all
future route events may be de tected bythe
system.
Syst
Syst em limits
em limits
If th e calculated route is adhered towhen route
guidance is active, ECO Assist will operate with
gr eater accuracy. The basic function is also availa-
ble without active route guidance. Not all informa-
tion and tra1c situations can be fore seen. The
qu ality depends on the map data.
ECO Assist is only an aid. The driver is responsible
fo rke eping a safe distance from theve hicle in
front, forve hicle speed and for braking in good
time.
The system may be impaired or may not function
in thefo llowing situations:
R Ifth ere is poor visibility, e.g. due toinsu1cient
illumination of thero ad, highly variable shade
conditions, rain, sno w,fog or heavy spr ay.
R Ifth ere is glare, e.g. from oncoming tra1c,
direct sunlight or re0ections.
R Ifth e windscreen in the area of the multifunc-
tion camera is dirty, or if the camera is misted
up, damaged or co vered. R
Ifth era dar sensors are dirty or damaged.
R Ifth e tra1c signs are hard todetect, e.g. due
to dirt, snow or insu1cient lighting, or
because they are co vered.
R Ifth e information in the navigation system's
digital map is incor rect or out-of-date.
R If signs are ambiguous, e.g. road signs in road-
wo rks or in adjacent lanes.
A A ctiv
ctiv ating or deactiv
ating or deactiv ating EC
ating ECO AssistO Assist
Multimedia system:
4 © 5
Settings 5
Assistance
5 Driving #
Activate or deactivate the function. F
F
unction of t
unction of t he r
he rout
oute-based oper
e-based oper ating-mode str
ating-mode str at-
at-
egy (plug-in h
egy (plug-in h ybr
ybrid)
id) %
The following function is countr y-dependent
and available only in conjunction with an inte-
gr ated navigation system.
The route-based operating-mode strategy is active
under thefo llowing conditions:
R Drive prog ram n is selected. R
The "route based" option (/ page 228) is
selected for drive prog ram n inthe
DYNAMIC SELECT menu.
R Route guidance is active.
R The state of charge ofthe high-voltage battery
is su1cient.
If th e function is active, data on the fur ther course
of thero ute is evaluated. This includes, e.g. road
type, speed limi tations and altitude data.
The hybrid system then adapts the operating
strategy tothe fur ther course of thero ute:
R Use of electrical energy and the combustion
engine are adap ted.
R State of charge ofthe high-voltage battery is
controlled accordingl y.
R Electrical energy is reser ved especially for
electric mode, e.g. urban route sections.
R The vehicle automatically selects the operat-
ing mode. Driving and parking
225
225

F
F
unction of t
unction of t he hap
he haptic acceler
tic acceler at
ator pedal (plug-in
or pedal (plug-in
h
h ybr
ybr id)
id) The haptic accelerator pedal has an additional
point of
resis tance follo we dby increased pedal
re sis tance tohelp you drive fully electricall y.
Characteristics of the additional point of resist-
ance:
R Available only in drive prog ram Î
R Is used when the electric mo tor po werav aila-
bility displ ay(POWER) is full
R Indicates the maximum available elect ric per-
fo rm ance
The subsequent increased pedal resis tance
indicates that the journey is being continued
with the combustion engine. D D
YN
YNAMIC SELECT butt AMIC SELECT butt on
on F
F
unction of t
unction of t he D
he DYN
YNAMIC SELECT buttAMIC SELECT butt on
on *
N
NOOTE
TE Plug-in hybrid #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. %
Depending on the engine and equipment, the
ve hicle has di.erent drive prog rams.
Use theDY NAMIC SELECT button tochange
between thefo llowing drive prog rams:
The drive prog ram selected appears in the driver's
display .
= Individual
R Individual settings
B Sport+
R Very sporty driving st yle with lo wered suspen-
sion
R Emphasises theve hicle's ownove rste ering
and understeering characteristics for a more
active driving style R
Only suitable for good road conditions, a dry
ro ad sur face and a clear st retch of road
C Sport
R Sporty driving st yle with lo wered suspension
R Still sporty, but with an emphasis on stability
R Allo ws th e sporty driver a more active driving
style
R Only suitable for good road conditions, a dry
ro ad sur face and a clear st retch of road
A Comfort
R Comfor table and economical driving
R Balance between traction and stability
R Recommended for all road conditions
N Curve
R Only available forve hicles with E‑ ACTIVE
BODY CONTROL
R Comfor table driving with cur vetilting function
R Balance between traction and stability
R Recommended for all road conditions 226 226
Driving and parking

;
Eco
R Particular lyeconomical driving
R Balance between traction and stability
R Recommended for all road conditions
Depending on the drive prog ram, thefo llowing
systems change their characteristics:
R Drive
- Engine and transmission management
- Active Distance Assist DISTRONIC
- Availability of Glide mode
R ESP ®
R Suspension
- Suspension and damping
- Vehicle le vel
R Steering F
F
unction of t
unction of t he D
he DYN
YNAMIC SELECT buttAMIC SELECT butt on (plug-in
on (plug-in
h
h ybr
ybr id)
id) %
Depending on the equipment, theve hicle has
di.erent drive prog rams. Depending on
the drive prog ram selected, thefo l-
lowing systems change their characteristics:
R Drive
- Engine and transmission management
- Active Distance Assist DISTRONIC
R Suspension
- Suspension and damping
- Vehicle le vel
R Steering
R ESP ®
Use theDY NAMIC SELECT switch tochange
between the drive prog rams. The drive prog ram
selected appears in the driver's display .
= Individual
R Individual settings
C Sport
R Sporty driving with the combustion engine and
re inforced boost e.ect
R Lowe red driving le vel R
Only suitable for good road conditions, a dry
ro ad sur face and a clear st retch of road
n Hybrid
R Comfor table and economical driving
R Full de velopment of all intelligent hybrid func-
tions
R Adjustable recuperation in overrun mode
R The selection of the matching drive type by
th ehy brid system depends on the driving con-
ditions and the distance
Î Electric
R Electric mode – driving without the combus-
tion engine is possible up toappr ox.
140 km/h
R Adjustable recuperation in overrun mode
R Adaptation of Active Distance Assist
DISTRONIC for electric mode
R Depending on the equipment, the maximum
set speed for cruise control, limiter and Active
Distance Assist DISTRONIC can be limited to
th e maximum electrically drivable speed Driving and parking
227
227