2021 MERCEDES-BENZ S-CLASS SALOON LONG parking brake

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

The
following route events can be de tected by
ECO Assist:
3 Roundabout
4 S-bend
5 Sharp bend
6 T-junction
7 Downhill gradient
8 Vehicle in front
9 Speed limit
% In drive prog ram A, ECO Assist only reacts
to route event 8"Vehicle in front." 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 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. R R
eg
eg ener
ener ativ
ative br
e br ak
ake syst
e syst em (plug-in h
em (plug-in h ybr
ybrid)
id) F
F
unction of t
unction of t he r
he recuper
ecuper ativ
ative br
e br ak
ake syst
e syst em
em
Depending on the selected recuperation le vel,the
electric mo tor is operated as an alternator when
in overrun mode and during braking in order to
ch arge the high-voltage battery while driving. As
soon as youre lease the accelerator pedal when
th eve hicle is in motion, recuperation in overrun
mode is initiated.
The higher there cuperation, the more sharply the
ve hicle is braked when coasting and the more
electrical energy is fed into the high-voltage bat-
te ry.
The rege nerative brake system has thefo llowing
ch aracteristics:
R supports braking with elect ronically cont rolled
brake forc e boosting 222 222
Driving and parking

R
con verts th e kinetic energy of theve hicle into
elect ric energy
% Ifyo u brake hard, the mechanical brake is
also used. This means that the maximum
re cuperative energy cannot be reco vered. The
more you drive and brake in an anticipatory
manner, the more e1cient lyenergy can be
re cuperated.
Syst
Syst em limits
em limits
The braking e.ect of the electric mo tor during
re cuperation in overrun mode may be reduced or
may not be available at all in thefo llowing situa-
tions:
R when the high-voltage battery charge level
increases
R ifth e high-voltage battery is not yet at a nor-
mal operating temp erature
R when driving at speeds close tozero
R in transmission position i
R during and aTer ESP ®
inter venes In
these cases, the desired deceleration is set by
th e brake control system. Also brake with the
service brake if necessar y.
Manuall
Manuall y se
y setting r
tting r ecuper
ecuper ativ
ative deceler
e deceler ation
ation
% You can use the steering wheel gearshiT pad-
dles toadjust the intensity of recuperation in
th en, oandÎ drive prog rams. The
following recuperation le vels are available:
R hà Intelligent and anticipa tory recupera-
tion with ECO Assist (/ page 221, 224)
R hq: no recuperation; theve hicle rolls freely
R h: normal recuperation R
h±: increased recuperation; st rong decel-
eration in overrun mode, e.g. for driving on
downhill gradients
St andard setting:
R hÃ: if the ECO Assist function is activa-
te d in the multimedia system (/ page 225).
R h: if the ECO Assist function is deactivated
in the multimedia system.
% hà is onlyavailable if the ECO Assist
function is activated in the multimedia system
and if the function of thera dar sensors is not
impaired. Also obser vethe information on
ve hicle senso rsand cameras in theve hicle
Owner's Manual. #
T
To incr
o incr ease r
ease r ecuper
ecuper ation:
ation:brie0y pull gearshiT
paddle 1. #
T
To r
o r educe r
educe r ecuper
ecuperation:
ation:brie0y pull gearshiT
paddle 2. #
S
St
tandar
andar d se
d setting:
tting: pull and hold gearshiT pad-
dle 1 or2 or engage transmission position
h again. Driving and parking
223
223

A
A
ut
ut omatic tr
omatic tr ansmission
ansmission DIRECT SELECT lev
DIRECT SELECT lev
er
erF
F
unction of t
unction of t he DIRECT SELECT lev
he DIRECT SELECT lev er
er&
W
WARNING
ARNING Risk of accident due toincor-
re ct gearshiTing
If th e engine speed is higher than the idle
speed and you engage the transmission posi-
tion hork, theve hicle may accelerate
sharpl y. #
Ifyo u engage the transmission position
h ork when theve hicle is at a stand-
still, alw ays depress the brake pedal
/rmly and do not accelerate at the same
time. &
W
WARNING
ARNING Risk of accident and injury due
to leaving children unattended in theve hi-
cle
If ch ildren are leT unattended in theve hicle,
th ey could, in particular:
R open doors, thereby endangering other
persons or road users.
R get out and be struck byoncoming tra1c.
R operate vehicle equipment and become
trapped, forex ample.
In addition, thech ildren could also set the
ve hicle in motion by,fo rex ample:
R releasing the parking brake.
R changing the transmission position.
R starting theve hicle. #
Never lea vechildren unattended in the
ve hicle. #
When leaving theve hicle, alw aysta ke the
ke y with you and lock theve hicle. #
Keep theve hicle key out of there ach of
ch ildren. Use
the DIRECT SELECT le verto switch the trans-
mission position. The cur rent transmission posi-
tion is show n inthe driver displa y. j
Park position
k Reversege ar
i Neutral
h Drive position Driving and parking
231
231

Eng
Eng
aging rev
aging rever
erse g
se g ear R
ear R #
Depress the brake pedal and push the DIRECT
SELECT le ver upwards past the /r stpoint of
re sis tance.
Eng
Eng aging neutr
aging neutr al N
al N #
Dep ress the brake pedal and push the DIRECT
SELECT le ver up or down tothe /rst point of
re sis tance.
% ToshiT into neutral iwith theve hicle
switched on, push the selector le ver up or
down for se veral seconds tothe /rst point of
re sis tance.
Subsequently releasing the brake pedal will allow
yo uto mo vetheve hicle freel y,e.g. topush it or
to w it away.
Pr
Pr oceed as f
oceed as f ollow
ollow s if y
s if you w
ou w ant t
ant the aut
he aut omatic
omatic
tr
tr ansmission t
ansmission t o r
o remain in neutr
emain in neutr al
ali
i, ev
, ev en if t
en if t he
he
v
v ehicle is switc
ehicle is switc hed
hedo.
o.or t
or t he dr
he dr iv
iver's door is
er's door is
opened:
opened: #
Depress the brake pedal and engage neutral
i when theve hicle is at a standstill. #
Release the brake pedal. #
Switch o. theve hicle. The
Risk of vehicle rolling away N activated man-
ually No automatic switch to P message appears
on the driver's displa y.
% Ifyo uth en exitth eve hicle leaving theke y in
th eve hicle, the automatic transmission
re mains in neut rali.
The park position jis automatically re-engaged
as soon as one of thefo llowing conditions is met:
R you switch totransmission position hork.
R you press the button j.
Eng
Eng aging par
aging par k position P
k position P #
Obser vethe no tes on parking theve hicle
(/ page 258). #
Depress the brake pedal until theve hicle
comes toa standstill. #
When theve hicle is at a standstill, press but-
to nj.
When the transmission position display sho ws
j ,th e park position is engaged. If no trans-
mission position display jappears, secure
th eve hicle toprev ent it from rolling away.
% Depending on the situation, it may take a
short time until jis engaged. Therefore, alw
ays pay attention tothe transmission posi-
tion displa y.
Pa rk position jis engaged automatically if one
of thefo llowing conditions is met:
R You switch the stationary vehicle o. in trans-
mission position hork.
R You open the driver's door when theve hicle is
at a standstill or when driving at a very low
speed and the transmission position is hor
k.
R When theve hicle is rolling, you switch if o. in
transmission position hork and bring it to
a standstill.
R You switch o. the engine, bring theve hicle to
a standstill and open the driver's door when
th eve hicle is stationary or when theve hicle is
ro lling and the transmission position is i.
R Engaging park position jautomatically is
re qu ired bytheve hicle.
% Tomanoeuv rewith an open driver's door,
open the driver's door while at a standstill and
engage transmission position hork again. 232
232
Driving and parking

Eng
Eng
aging dr
aging dr iv
ive position D
e position D #
Depress the brake pedal and push the DIRECT
SELECT le ver down past the /r stpoint of
re sis tance.
When the automatic transmission is in transmis-
sion position h, it shiTsthege ars automaticall y.
This depends, among other things, on thefo llo w-
ing factors:
R The selected drive prog ram
R The position of the accelerator pedal
R The driving speed Manual
Manual
g
gear
ear shiTing
shiTing %
For plug-in hybrids, obser vethe information
re ga rding there ge nerative brake system
(/ page 222). When
the automatic transmission is shiTed to
position h,you can manually shiT it with the
stee ring wheel gearshiT paddle. If permitted, the
automatic transmission shiTs toa higher or lo wer
ge ar depending on the steering wheel gearshiT
paddle being pulled.
Yo u ha vetwo options tomanually shiT the auto-
matic transmission:
R Temp orary setting
R Perm anent setting
The gears shiT automatically when manual shiTing
is deactivated.
T T em
em por
por ar
ary se
y se tting:
tting: #
T
To activ
o activ at
ate:
e: Pull steering wheel gearshiT pad-
dle 1 or2.
Manual shiTing is activated for a short time.
The transmission position display sho wsp
and the cur rent gear.
% How long the manual shiTing st ays activated
is dependant on various factors.
Manual shiTing can be automatical lydeactiva-
te d in thefo llowing cases:
R Changing the drive prog ram
R Restarting theve hicle
R When the transmission position his
engaged again
R Driving style #
T
To
o shiT
shiT up:
up:Pull steering wheel gearshiT pad-
dle 2. #
T
To
o shiT
shiT do
down:
wn: Pull steering wheel gearshiT
paddle 1. #
T
To deactiv
o deactiv at
ate:
e: Pull steering wheel gearshiT
paddle 2and hold it in place.
The transmission position displ aysho wsh. Driving and parking
233
233

%
You can also activate or deactivate manual
shiTing permanently in the multimedia sys-
te m. P
P
er
er manentl
manentl y activ
y activating or deactiv
ating or deactiv ating manual
ating manual
g
g ear c
ear c hanging
hanging Multimedia system:
4 © 5
Vehicle 5
Driving #
Perm anently switch the function on or o.. Gear
Gear
shiT
shiT r
recommendation
ecommendation The
gearshiT recommendation assists you in
adopting an economical driving style. #
Ifth ege arshiT recommendation 1appears
next tothe transmission position displa y,shiT
to there commended gear. Using kic
Using kic
kdo
kdown
wn #
Maximum acceler
Maximum acceler ation:
ation:depress the accelera-
to r pedal be yond the pressure point.
To protect against engine overrev ,th e automatic
transmission shiTs up tothe next gear when maxi-
mum engine speed has been reached. Glide mode function
Glide mode function
Wi
th an anticipatory driving st yle, Glide mode
helps youto reduce fuel consum ption.
Glide mode is characterised bythefo llowing:
R The combustion engine is disconnected from
the driv etra in and continues torun in neutral.
R The transmission position display his shown
in green.
R V Vehicles wit
ehicles wit h 48 V on-boar
h 48 V on-boar d electr
d electrical syst
ical syst em:
em:
th e combustion engine can be switched o..
All of theve hicle functions remain active. Glide mode is activated if
thefo llowing conditions
are met:
R Drive prog ram ; is selected.
R The speed is within a suitable range.
R The road's course is suitable, e.g. no steep
uphill or downhill inclines or tight bends.
R There is no trailer hitched up tothe trailer
hitch, and no bicycle rack Fitted.
R You do not depress the accelerator or brake
pedal (e xcept for light brake applications).
% Glide mode can also be activated if you ha ve
selected the "Eco" setting forth e drive in the
drive prog ram =.
Glide mode is deactivated again if one of the con-
ditions is no longer met.
Glide mode can also be pr evented bythefo llowing
parame ters:
R Incline
R Downhill gradient
R Temp erature
R Height 234 234
Driving and parking

#
apply the parking brake. #
Switch the transmission toposition j. &
W
WARNING
ARNING Risk of /re caused byhot
ex haust system parts
Flammable materials such as lea ves, grass or
twigs may ignite. #
Park theve hicle so that no 0ammable
material can come into contact with hot
ve hicle components. #
In particular, do not park on dry grass-
land or har vested grain /elds. &
W WARNING
ARNING Risk of accident and injury due
to leaving children unattended in theve hi-
cle
If ch ildren are leT unattended in theve hicle,
th ey could, in particular:
R open doors, thereby endangering other
persons or road users.
R get out and be struck byoncoming tra1c. R
operate vehicle equipment and become
trapped, forex ample.
In addition, thech ildren could also set the
ve hicle in motion by,fo rex ample:
R releasing the parking brake.
R changing the transmission position.
R starting theve hicle. #
Never lea vechildren unattended in the
ve hicle. #
When leaving theve hicle, alw aysta ke the
ke y with you and lock theve hicle. #
Keep theve hicle key out of there ach of
ch ildren. *
N
NOOTE
TE Damage totheve hicle due toitro ll-
ing away #
Always secure theve hicle against rolling
awa y. *
N
NO
OTE
TE Damage due totheve hicle lo wering V
V
ehicles wit
ehicles wit h AIRMA
h AIRMATIC or E-A
TIC or E-A CTIVE BOD
CTIVE BOD Y
Y
C
C ONTR
ONTR OL:
OL:The vehicle can lo wer because of
te mp erature di.erences or longer non-opera-
tional times. This can cause damage toparts
of the body. #
When stopping theve hicle and when
driving o., make sure that there are no
obstacles such as curbs under or in the
immediate vicinity of the body. Driving and parking
259
259