2021 MERCEDES-BENZ S-CLASS SALOON LONG Owners Manual

If
th eve hicle deviates from the direction desired
by the driver, ESP ®
can stabilise theve hicle by
inter vening in thefo llowing ways:
R One or more wheels are braked.
R The engine output is adap ted according tothe
situation.
When ESP ®
is deacti vated, theå warning
lamp lights up continuousl y:
R Driving stability will no longer be impro ved.
R The drive wheels could spin.
R ETS/4ETS traction control is still active.
% When ESP ®
is deactivated, you are still assis-
te dby ESP ®
when braking.
When the÷ warning lamp 0ashes, one or se v-
eral wheels has reached its grip limit:
R Adapt your driving style tosuit the cur rent
ro ad and weather conditions.
R Do not deactivate ESP ®
.
R Only depress the accelerator pedal as far as is
necessary when pulling away. Deactivate ESP
®
in thefo llowing situations to
impr ovetraction:
R When using snow chains.
R In deep sno w.
R On sand or grav el.
% Spinning the wheels results in a cutting
action, which enhances traction.
If th e÷ ESP®
wa rning lamp lights up continu-
ousl y,ESP ®
is not available due toa malfunction.
Obser vethefo llowing information:
R Warning and indicator lamps (/ page 571)
R Display message s (/page 495)
ET
ET S/4ET
S/4ET S (Electr
S (Electr onicTr
onic Traction Syst
action Syst em)
em)
ETS/4ETS traction cont rol is part of ESP ®
and
makes it possible topull away and accelerate on a
slippery car riag ewa y.
ETS/4ETS can impr ovetheve hicle's traction by
inter vening in thefo llowing ways:
R The drive wheels are braked individually if they
spin. R
More drive torque is tr ansferredto the wheel
or wheels with traction.
In0uence
In0uence of dr
of driv
ive pr
e pr ogr
ograms on ESP
ams on ESP ®
®
The drive prog rams enable ESP ®
to adapt todif-
fe re nt we ather and road conditions as well as the
driver's prefer red driving style. Depending on the
selected drive prog ram, the appropriate ESP ®
mode will be activated. You can select the drive
prog rams using theDY NAMIC SELECT switch
(/ page 228). F
F
unction of ESP
unction of ESP ®
®
Cr
Cr osswind Assist
osswind Assist ESP
®
Crosswind Assist de tects sudden gusts of
side wind and helps the driver tokeep theve hicle
in the lane:
R ESP ®
Crosswind Assist is active at vehicle
speeds between appr ox. 75 km/h and
200 km/h when driving straight ahead or cor-
nering slightl y.
R The vehicle is stabilised bymeans of individual
brake application on one side. 270 270
Driving and parking

F
F
unction of ESP
unction of ESP ®
®
tr
trailer st
ailer st abilisation
abilisation &
W
WARNING
ARNING Risk of accident in poor road
and weather conditions
In poor road and weather conditions, the
trailer stabilisation cannot pr event lur ching of
th eve hicle/trailer combination. Trailers with a
high cent reofgrav ity may tip over before
ESP ®
de tects this. #
Always adapt your driving style tosuit
th e cur rent road and weather conditions. When driving with a trailer, ESP
®
can stabilise
yo ur vehicle if the trailer begins toswer vefrom
side toside:
R ESP ®
trailer stabilisation is active abo ve
speeds of 65 km/h.
R Slight swerving is reduced bymeans of a tar-
ge ted, individual brake application on one
side.
R Intheev ent of se vere swerving, the engine
output is also reduced and all wheels are
braked. ESP
®
trailer stabilisation may be impaired or may
not function if:
R The trailer is not connected cor rectly or is not
de tected proper lyby theve hicle. A
A
ctiv
ctiv ating/deactiv
ating/deactiv ating ESP
ating ESP®
®
(Electr
(Electr onicSt
onic Stability
ability
Pr
Pr ogr
ogr am)
am) Multimedia system:
4 © 5
ß 5
y
% ESP®
can only be activated/deactivated using
qu ick access when at least one other function
is available in quick access. ESP ®
can other-
wise be found in theAssistance menu. #
Select ESP. #
Select Onorå Off.
ESP ®
is deactivated if theå ESP®
OFF warn-
ing lamp lights up continuously in the driver's dis-
pla y.
Obser veany information on warning lamps and
display message s which may be shown in the driv-
er's displa y. F
F
unction of EBD
unction of EBD Electronic Breakforce Distribution (EBD) is
char-
acterised bythefo llowing:
R Monitoring and regulating the brake pressure
on there ar wheels.
R Impr oved driving stability when braking, espe-
cially on bends. F
F
unction of S
unction of S TEER C
TEER CONTR
ONTROL
OL ST
EER CONTROL assists youby transmitting a
noticeable steering forc eto the steering wheel in
th e direction requ ired forve hicle stabilisation.
This steering recommendation is given in thefo l-
lowing situations:
R both right wheels or bo thleT wheels are on a
we t or slippery road sur face when you brake
R theve hicle starts toskid
Syst
Syst em limits
em limits
ST EER CONTROL may be impaired or may not
function in thefo llowing situations:
R ESP ®
is deactivated. Driving and parking
271
271

R
ESP ®
is malfunctioning.
R The steering is malfunctioning.
If ESP ®
is malfunctioning, you will be assisted fur-
th er by the electric po wer steering. HOLD function
HOLD function
HOLD function
HOLD function
The HOLD function holds
theve hicle at a stand-
still without requ iring youto depress the brake
pedal, e.g. while waiting in tra1c.
The HOLD function is only an aid. The responsibil-
ity forth eve hicle safely standing still remains with
th e driver.
Syst Syst em limits
em limits
The HOLD function is only intended toprov ide
assistance when driving and is not a su1cient
means of safeguarding theve hicle against rolling
awa y when stationa ry.
R The incline must not be greater than 30%. A A
ctiv
ctiv ating/deactiv
ating/deactiv ating t
ating the HOLD function
he HOLD function &
W
WARNING
ARNING Risk of an accident due tothe
HOLD function being active when you
lea vetheve hicle
If th eve hicle is only braked with the HOLD
function it could, in thefo llowing situations,
ro llawa y:
R Ifth ere is a malfunction in the system or in
th e po wer suppl y.
R Ifth e HOLD function is deactivated by
depressing the accelerator pedal or brake
pedal, e.g. byave hicle occupant. #
Always secure theve hicle against rolling
awa y before you lea veit. R
R
eq
eq uir
uir ements:
ements:
R The vehicle is stationar y.
R The driver's door is closed or the seat belt on
th e driver's side is fastened.
R The vehicle has been star ted or has been
automatically switched o. bythe ECO start/
stop function. R
The vehicle has been star ted.
R The electric parking brake is released.
R Active Distance Assist DISTRONIC is deactiva-
te d.
R The transmission is in position h,kori.
A
A ctiv
ctiv ating t
ating t he HOLD function
he HOLD function #
Depress the brake pedal, and aTer a short
time quickly depress fur ther until theë
display appears in the driver's displa y. #
Release the brake pedal.
Deactiv
Deactiv ating t
ating the HOLD function
he HOLD function #
Depress the accelerator pedal topull away.
or #
Depress the brake pedal until theë display
disappears from the driver's displa y.
The HOLD function is deactivated in thefo llowing
situations:
R Active Distance Assist DISTRONIC is acti va-
te d.
R The transmission is shiTed toposition j. 272
272
Driving and parking

R
The vehicle is secured with the electric par k-
ing brake.
In thefo llowing situations, theve hicle is held by
transmission position jand/or bythe electric
parking brake:
R The seat belt is unfastened and the driver's
door is opened.
R The vehicle is switched o..
R There is a system malfunction.
R The po wer supply is insu1cient.
In addition, theBrake immediately message may
appear in the driver's display and a horn tone may
sound at regular inter vals. #
Immediate lydepress the brake pedal /rmly
until thewa rning message disappears.
The HOLD function is deactivated. #
Additionally secure theve hicle against rolling
awa y. F
F
unction of Hill St
unction of Hill Star
art Assist
t Assist Hill
Start Assist holds theve hicle for a short time
when pulling away on a hill under thefo llowing
conditions:
R The transmission is in position hork.
R The electric parking brake is released.
This gives you enough time tomo veyour foot
from the brake pedal tothe accelerator pedal and
depress it before theve hicle begins torollawa y. &
W
WARNING
ARNING Risk of accident and injury due
to theve hicle rolling away
ATer a sho rttime, Hill Start Assist no lon ger
holds theve hicle. #
SwiTly mo veyour foot from the brake
pedal tothe accelerator pedal. Do not
lea vetheve hicle when it is being held by
Hill Start Assist. F
F
unction of A
unction of A dap
daptiv
tive Br
e Br ak
ake Lights
e Lights Ad
aptive Brake Lights warnfollowing tra1c in an
emer gency braking situation with thefo llowing
actions:
R By 0ashing the brake lamps
R By activating the hazard warning lights
If th eve hicle is braked sharply from speeds abo ve
50 km/h, the brake lamps 0ash rapidl y.This pro-
vides tra1c tr avelling behind you with an even
more noticeable warning.
If th eve hicle is tr avelling at speeds of more than
70 km/h at the beginning of the brake applica-
tion, the hazard warning lights switch on once the
ve hicle is stationar y.When you pull away again,
th e hazard warning lights will switch o. automati-
cally at appr oximately 10 km/h. You can also
switch o. the hazard warning lights using the haz-
ard warning button. Driving and parking
273
273

A
A
TTENTION ASSIST
TTENTION ASSIST F
F
unction of A
unction of A TTENTION ASSIS
TTENTION ASSIS T wit
T with micr
h micr osleep
osleep
det
det ection
ection
% The mic rosleep de tection subfunction is only
av ailable in combination with the driver cam-
era.
AT TENTION ASSIST assists you on long, mono to-
nous journe ys, e.g. on mo torw ays and trunk
ro ads. If indicators of fatigue or increasing lapses
in concentration on the part of the driver are
de tected, the system suggests taking a break.
AT TENTION ASSIST is only an aid. It cannot
alw ays de tect fatigue or lapses in concentration in
time. The system is not a substitute for a well-res-
te d and attentive driver. On long journe ys,ta ke
re gular breaks in good time that allow for ade-
qu ate recuperation.
Yo u can choose between two settings:
R St
Standar
andar d:
d:normal system sensitivity.
R Sensitiv
Sensitiv e:
e:higher system sensitivity. The driver
is wa rned earlier and the attention le vel de tec-
te dby ATTENTION ASSIST is ada pted accord-
ingl y. If dr
owsiness or increasing lapses in concent ra-
tion are de tected, theATTENTION ASSIST: Take
a break! warning appears in the driver's displa y.
Yo u can ackno wledge the message and take a
break where necessar y.Ifyo u do not take a break
and ATTENTION ASSIST continues todetect
increasing lapses in concentration, you will be
wa rned again aTer a minimum of 15 minutes. The
following information is displa yed in the driv-
er's displa y:
R The length of the journey since the last break
R The attention le vel de term ined byATTENTION
ASSIS T: -
The more segments 2ofthe circle dis-
pla yed, the higher the de tected attention
le ve l.
- Fewe r segments 2are displa yed in the
circle as the attention le vel decreases.
R Microsleep de tection 1status:
- Deacti vated: display 1is hidden.
- Activated but not operational: display 1
is grey.
- Activated and operational: display 1is
gr een.
If AT TENTION ASSIST is unable tocalculate the
attention le vel and cannot issue a warning, the
System suspended message appears.
If th e system, which uses the driver camera,
de tects indicators of microsleep, theATTENTION
ASSIST Microsleep Take a break! warning mes-
sage appears in the driver's display and a warning
to ne sounds simultaneousl y.This warning mes-
sage must be con/ rmed byTouch Control. It is
re commended that youta ke a break immediatel y.
If a warning is given in the driver's displa y,the
multimedia system o.ers tosear chfor a rest 274
274
Driving and pa
rking

area.
You can select a rest area and start naviga-
tion tothis rest area.
If yo ure start theve hicle, ATTENTION ASSIST with
mic rosleep de tection is automatical lyactivated.
The last selected sensitivity le velre mains stored.
Syst
Syst em limits
em limits
AT TENTION ASSIST is active in the 60 km/h to
200 km/h speed range.
The mic rosleep de tection function is available at a
speed of 20 km/h and abo ve.
Pa rticular lyin thefo llowing situations, ATTENTION
ASSIST only functions in a restric ted manner and
wa rnings may be dela yed or not occur:
R Ifyo u ha vebeen driving for less than appr ox-
imately 30 minutes.
R Ifth ero ad condition is poor (une venro ad sur-
fa ce or po tholes).
R Ifth ere is a strong side wind.
R Ifyo u adopt a sporty driving style (high corner-
ing speeds or high rates of acceleration).
R Ifth eSt eering Assist function of Active Dis-
ta nce Assist DISTRONIC is active. R
Ifth e clock is set tothe incor rect time.
R Ifyo uch ange lanes and vary your speed fre-
qu ently in active driving situations.
Microsleep de tection also does not function when
th e driver camera cannot de tect the driver's eyes,
fo rex ample as a result of thefo llowing factors:
R The driver's eyes are co vered due tothe steer-
ing column position, forex ample.
R Poor lighting conditions.
R Some types of spectacles or sunglasses.
R The driver's line of vision is outside the driver
camera's /eld of vision.
Also obser veany information rega rding display
message sth at can be displ ayed in the driver's
displa y.
The tiredness and alert ness assessment of
AT TENTION ASSIST with mic rosleep de tection is
re set and restar ted when continuing the journey
in thefo llowing situations:
R You switch o. theve hicle. R
Ifyo u unfasten your seat belt and open the
driver's door (e.g. tochange drivers or take a
break).
Se
Se tting A
tting A TTENTION ASSIST
TTENTION ASSIST
Multimedia system:
4 © 5
Settings 5
Assistance
5 Assistance 5
ATTENTION ASSIST
Se
Se tting t
tting t he sensitivity
he sensitivity #
Tapth e cur rent setting. #
Select Standard orSensitive.
A
A ctiv
ctiv ating/deactiv
ating/deactiv ating t
ating the micr
he micr osleep w
osleep w ar
arning
ning #
Activate/deactivate Microsleep warning . Limit
Limit
er
er F
F
unction of t
unction of t he limit
he limiter
er
The limiter restricts the speed of theve hicle. To
re duce the speed tothe set speed, the limiter
applies the brakes automaticall y.
Yo u can limit the speed as follo ws:
R V
Var
ar iable:
iable: for a short-term speed restriction,
e.g. in built-up areas Driving and pa
rking
275
275

R
P
Per
er manent
manent: :fo r a longer-term speed restric-
tion, e.g. in winter ty remode
The variable limi ter is operated using the cor re-
sponding steering wheel buttons (/ page 279).
Yo u can store any speed abo ve20 km/h up tothe
maximum design speed or up tothe set winter
tyre limit. You can also per form settings while the
ve hicle is stationary if theve hicle has been star-
te d.
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 266).
Display
Display s in t
s in the dr
he dr iv
iver's display
er's display
R È (gre y): variable limi ter is selected but not
yet activated.
R È (0ashes grey):variable limi ter is temp o-
rari lypassive.
R È (gre en): variable limi ter is activated.
A stored speed appears under theÈ display
and is indicated in the speedome ter.
If yo u depress the accelerator pedal be yond the
pressure point (kickdown), theva riable limi ter switches
topassive mode. The Èpassive
message appears in the driver's display and the
È display 0ashes.
The variable limi ter is reactivated in thefo llowing
situations:
R Ifth eve hicle speed drops below the stored
speed.
R Ifth e stored speed is called up.
R Ifyo u store a new speed.
Inf
Inf or
ormation on t
mation on t he per
he permanent limit
manent limit er
er
If th eve hicle should ne verex ceed a speci/c
speed (e.g. for driving in winter tyre mode), you
can set this speed with the permanent limiter.
Yo u do this by limiting the speed between
160 km/h and 240 km/h in the multimedia sys-
te m (/ page 276).
Shortly before the set speed is reached, it
appears in the driver's displa y.When you con/rm
th e message, display messages no longer appear
until you switch o. theve hicle. The speed will
only be displ ayed again once theve hicle has been
re star ted or if the set speed is changed. The permanent limi
ter does not switch topassive
mode even during kickdown and the driven speed
re mains below the set speed.
Se
Se tting t
tting t he limit speed f
he limit speed f or wint
or winter tyr
er tyres
es
Multimedia system:
4 © 5
Settings 5
Vehicle 5
Driving #
Activate or deactivate Winter tyre limit.
Se
Se tting a speed
tting a speed #
Select ZnexttoWinter tyre limit. #
Select a speed. A
A
ctiv
ctiv e Dist
e Dist ance Assis
ance Assist DIS t DISTR
TRONIC
ONIC F
F
unction of A
unction of A ctiv
ctive Dist
e Dist ance Assis
ance Assist DIS t DISTR
TRONIC
ONIC
Ac tive Distance Assist DISTRONIC maintains the
set speed on free-0owing roads. If vehicles in
front are de tected, the set distance is maintained,
if necessar y,until theve hicle comes toa halt. The
ve hicle accelerates or brakes depending on the
distance totheve hicle in front and the set speed.
The speed and distance totheve hicle in front are
set and sa ved using the steering wheel. 276
276
Driving and parking

Ac
tive Distance Assist DISTRONIC is available in
th e 20 km/h to210 km/h speed range.
Other features of Active Distance Assist
DISTRONIC:
R Adjusts the driving style depending on the
selected drive prog ram (fuel-saving, comfor ta-
ble or dynamic) (/ page 226)
R Initiates acceleration tothe stored speed if the
turn signal indica tor is switched on tochange
to theove rtaking lane
R Reacts tostationa ryvehicles de tected in
urban speed ranges (e xcept bicycles and
mo torc yc les)
R Take s one-sided overtaking restrictions into
account on mo torw ays or on multi-lane roads
with separate car riag ewa ys(countr y-depend-
ent)
A
A dditional function av
dditional function available in cert
ailable in cert ain countr
ain countries:
ies:
if Ac tive Distance Assist DISTRONIC has braked
th eve hicle toa standstill, it can automatically fol-
low theve hicle in front when driving o. again
within 30 seconds. If a critical situation is de tec-
te d in the sur rounding area when driving o., such as a person in
theve hicle path, a visual and
acoustic warning is given indicating that the driver
must now take cont rol of theve hicle. The vehicle
is not accelerated any furt her.
Ac tive Distance Assist DISTRONIC is ready topull
aw ay when thegr een ç vehicle symbol 0ashes
cyclical ly.
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 266). Displa
Displa
y in t
y in the dr
he dr iv
iver's displa
er's displa y in t
y in the
heAssistance
menu
menu 1
Vehicle in front
2 Distance indicator
3 Set speci/ed distance
Ve hicle de tected in front 1is highlighted in
gr een. It may also be in the lane tothe leT of your
ve hicle in situations where it is not permitted to
ove rtake on theright, forex ample on mo torw ays.
P
P er
er manent st
manent st atus display
atus displ ay
R ç (gre y): Active Distance Assist
DISTRONIC selected but not yetactive Driving and parking
277
277