2021 MERCEDES-BENZ S-CLASS SALOON LONG open bonnet

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

Anti-t
Anti-theT
heTprot
pr otection
ection F
F
unction of t
unction of t he immobiliser
he immobiliser The immobiliser pr
events your vehicle from being
star ted without the cor rect key.
The immobiliser is automatically activated when
th eve hicle is switched o., and deactivated when
th eve hicle is switched on. A A
T
TA
A (Anti-
(Anti- TheT
TheT Alar
Alarm syst
m syst em)
em) F
F
unction of t
unction of t heAT
he ATA systA syst em
em
If th eATA system is primed, a visual and audible
alarm is triggered in thefo llowing situations:
R when a door is opened
R when the boot lid is opened
R when the bonnet is opened
R when interior pr otection is triggered
(/ page 116)
R when tow- aw ay protection is triggered
(/ page 116) The
ATA system is primed automatically aTer
appr oximately ten seconds in thefo llowing situa-
tions:
R aTer locking theve hicle with thekey
R aTer locking theve hicle using KEYLESS-GO Indicator lamp
10ashes when theATA system is
primed. The
ATA system is deacti vated automatically in the
fo llowing situations:
R aTer unlocking theve hicle with thekey
R aTer unlocking theve hicle using KEYLESS-GO
R aTer pressing the start/s top button with the
ke y in the st owage compartment
(/ page 212)
% When the Mercedes‑Benz emer gency call sys-
te m is active and the alarm st ays on for more
th an 30 seconds, a message is automatically
sent tothe Customer Assistance Centre
(/ page 411).
Deactiv
Deactiv ating t
ating theATA
he ATA #
Press theÜ, sorH button on the
key.
or #
Press the start/s top button with theke y in the
st ow age compartment (/ page 212)
Deactiv
Deactiv ating t
ating the alar
he alar m using KEYLESS-GO
m using KEYLESS-GO #
With th eke y outside theve hicle, touch the
inner sur face of the door handle. Opening and closing
115
115

#
Neverto uch damaged components of
th e high-voltage on-board electrical sys-
te m. #
ATer an accident, do not touch any com-
ponents of the high-voltage on-board
electrical system. #
ATer an accident, ha vetheve hicle trans-
por tedawa y. #
Have the components of the high-voltage
on-board electrical system checked at a
qu ali/ed specialist workshop and
re placed if necessar y.R
R
eq
eq uir
uir ements:
ements:
Only disconnect the high-voltage on-board electri-
cal system manually in thefo llowing situations:
R The 6 restraint system warning lamp lights
up in the driver's displa y,e.g. aTer an acci-
dent.
R The vehicle is badly damaged, e.g. aTer an
accident, and there straint system co mpo-
nents ha venot been triggered. T
T
o oper
o oper at
ate t
e t he high-v
he high-v olt
oltag
age disconnect de
e disconnect de vice
vice #
Switch o. theve hicle. #
ShiT the transmission toposition j. #
Apply the electric parking brake. #
Secure theve hicle against rolling away. #
Open the bonnet. #
Press release tab1 inthe direction of the
ar ro w and pull it out. #
Pull high- voltage disconnect device 2inthe
direction of the ar row until it engages.
The high- voltage on-board electrical system is
switched o..
All workon thehy brid drive system (including
aTer disconnecting the high-voltage on-board
electrical system manually) may only be car ried
out byaqu ali/ed specialist workshop. Switc
Switc
hing on t
hing on t he pow
he power suppl
er suppl y or t
y or the v
he vehicle
ehicle &
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. 210
210
Driving and parking

P
P
ausing A
ausing A ctiv
ctive P
e Par
arking Assist
king Assist
Yo u can inter rupt the parking or exiting procedure
of Active Parking Assist byper form ing one of the
fo llowing actions, forex ample: #
depressing the brake pedal #
opening the front passenger door, a rear door,
th e boot or the bonnet #
applying the electric parking brake or activat-
ing the HOLD function #
T
To r
o r esume t
esume t he par
he parking or e
king or e xiting pr
xiting procedur
ocedure:
e:
ge ntly dep ress the accelerator pedal.
% Ifth e electric parking brake was applied
before Active Parking Assist was activated,
depress the accelerator pedal lightly tostart
th e parking or exiting procedure.
Check the area around your vehicle again before
re suming a paused parking procedure. Make sure
th at persons, animals or objects are no longe r in
th e manoeuvring range. Also obser vethe system
limitations of Active Parking Assist. A
A
ut
ut omatic br
omatic br aking function of A
aking function of A ctiv
ctive P
e Par
arking
king
Assist
Assist
Pe rsons or objects de tected in the manoeuvring
ra nge could cause theve hicle tobrake sharply
and inter rupt the parking or exiting procedure.
The vehicle will then be held at a standstill. If you
depress the accelerator pedal, the parking or exit-
ing procedure is resumed.
Check the area around your vehicle again before
re suming the parking or exiting procedure. Make
sure that persons, animals or objects are no lon-
ge r in the manoeuvring range. Also obser vethe
system limi tations of Active Parking Assist. R R
emot
emot e P
e Par
arking Assist
king Assist F
F
unction of R
unction of R emot
emote P
e Par
arking Assist
king Assist
% Remo teParking Assist is an additional func-
tion of Active Parking Assist. Comply with
local tra1c la wsand regulations when using
Re mo teParking Assist on public roads.
If it is requ ired toturn the wheels towa rdthe
ke rb, you cannot use Remo teParking Assist. Please no
tethat you can only use Remo te
Pa rking Assist if you ha veava lid driving
licence and are in a /t state todrive.
Re mo teParking Assist par ksyour vehicle or exits
th e parking space while you are outside of your
ve hicle. You can monitor the manoeuvring and
parking procedure on your mobile phone.
Wi th Remo teParking Assist, you can car ryout all
th e parking procedures of Active Parking Assist.
Yo u can also position theve hicle directly in front
of a garage or a driv eway entrance and then use
Re mo teParking Assist toenter or exit a parking
space.
Re mo teParking Assist manages pulling away,
braking and steering. While Remo teParking Assist
is active, theve hicle is loc ked.
Re mo teParking Assist is only an aid. It is not a
substitute foryo ur attention tothe sur roundings.
The responsibility for safe manoeuvring and par k-
ing remains with you. Inter rupt or term inate the
parking procedure if necessar y.Make sure that no
persons, animals or objects etc. are in the
manoeuv ring range. Make sure toalso pay atten-
tion toother vehicles. 326 326
Driving and parking

R
Frequent operation in mountainous terrain or
on poor road sur faces
R When the engine is oTen leT idling for long
periods
R Operation in particular lydusty conditions
and/or if air-recirculation mode is frequently
used
In these or similar operating conditions, ha vethe
interior air /lter, air /lter, engine oil and oil /lter,
fo rex ample, changed more frequentl y.The tyres
must be checked more frequently if theve hicle is
operated under increased loads. Further informa-
tion can be obtained at a quali/ed specialist work-
shop. Batt Batt
er
ery disconnection per
y disconnection per iods
iodsThe AS
SYST PLUS service inter val display can cal-
culate the service due date only when the battery
is connected. #
Display and no tedown the service due date
on the driver display before disconnecting the
battery (/ page 423). Engine com
Engine com
par
partment
tment A
A
ctiv
ctiv e bonne
e bonne t (pedes
t (pedestr trian pr ot
ian pr otection)
ection) Oper
Oper
ation of t
ation of t he activ
he active bonne
e bonne t (pedes
t (pedestr trian pr ot
ian pr otec-
ec-
tion)
tion)
In cer tain accident situations, the actuation of the
active bonnet reduces therisk of injury topedes-
trians. The rear area of the bonnet is raised by
appr oximately 80 mm.
ATer being triggered, the active bonnet remains in
th era ised position. Limited visibility due tothe
ra ised bonnet cannot be ruled out.
ATer the active bonnet has been actuated, pedes-
trian pr otection may be limited.
Ha ve the full functionality of the active bonnet
re stored immediately in a quali/ed specialist
wo rkshop.
If necessar y,adjust your seat position and drive
carefully toaqu ali/ed specialist workshop. If a
safe continued jou rney is not possible, contact a
qu ali/ed specialist workshop. Opening and closing t Opening and closing t
he bonnet
he bonn et &
W
WARNI NG
ARNI NGRisk of accident due todriving
with the bonnet unloc ked
The bonnet may open and blo ckyour vie w. #
Neverre lease the bonnet when driving. #
Before every trip, ensure that the engine
bonnet is loc ked. &
W
WARNING
ARNING Risk of accident and inju ry
when opening and closing the bonnet
The bonnet may suddenly drop into the end
position.
There is a risk of injury for an yone in the
engine bonnet's range of mo vement. #
Do not open or close the bonnet if there
is a person in the bonnet's range of
mo vement. 424 424
Maintenance and care

&
W
WARNI NG
ARNI NGRisk of burns when opening the
bonnet
If yo u open the bonnet in theev ent of an over-
heated engine or /re in the engine compart-
ment, thefo llowing situations may occur:
R You may come into contact with hot gases.
R You may come into contact with other
escaping hot operating 0uids. #
Before opening the bonnet, allow the
engine tocool down. #
Intheev ent of a /re in the engine com-
partment, keep the bonnet closed and
call the /re service. &
W
WARNING
ARNING Risk of injury due tomoving
parts
Components in the engine compartment may
continue torun or start unexpectedly even
when the drive system is switched o..
Obser vethefo llowing if you must open the
bonnet: #
Switch o. theve hicle. #
Neverto uch the danger zones sur round-
ing moving components, e.g. thero tation
area of thefa n. #
Remo vejewe llery and watches. #
Keep items of clo thing and hair away
from moving pa rts. &
W
WARNING
ARNING Risk of injury from touching
components under voltage
The ignition system and the fuel injection sys-
te m operate at high voltage. You could receive
an elect ric shoc k. #
Neverto uch ignition system or fuel injec-
tion system components when theve hi-
cle is switched on. The live components include
thefo llowing, for
ex ample:
R Ignition coils
R Fuel injectors R
Electric lines tothe ignition coils and the fuel
injectors &
W
WARNING
ARNING Risk of burns from hot compo-
nent parts in the engine compartment
Cer tain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of theex haust system. #
Allow the engine tocool down and only
to uch component parts described in the
fo llowing. &
W
WARNING
ARNING Risk of injury from using the
windscreen wipers when the bonnet is
open
If th e windscreen wipers start moving when
th e bonnet is open, you could be trapped by
th e wiper linkage. #
Always switch o. the windscreen wipers
and theve hicle /r stifyo u need toopen
th e bonnet. Maintenance and care
425
425

Opening t
Opening t
he bonnet
he bonnet #
Pull on handle 1twice.
The bonnet will be released and open slightl y.#
Then liT the bonnet byhand. Closing t
Closing t
he bonnet
he bonn et
* NO
NOTE
TEDama getothe bonnet If
th e bonnet is closed manuall y,there is a risk
of dents. #
Do not close the bonnet manuall y. #
Lowe rth e bonnet toa height of around 20 cm
and then allow it tofall, applying a little force
as you let it go. #
Ifth e bonnet can still be liTed slightl y,open
th e bonnet again and close it with a little more
fo rc e until it engages cor rectl y. Engine oil
Engine oil
Chec
Chec
king t
king t he engine oil lev
he engine oil lev el using t
el using the dr
he driv
iver dis-
er dis-
play
play
R R eq
eq uir
uir ements:
ements:
R The engine has been warmed up.
R The vehicle is par ked on a le vel sur face.
R The engine is running at idle speed.
R The bonnet is closed. De
term ining the engine oil le vel can take up to
30 minutes with a normal driving style and even
longer with an active driving style.
Driver display:
4 Service
The engine oil le vel is shown.
One of thefo llowing message s will appear onthe
driver displa y:
R Engine oil level Measuring now…: the engine
oil le vel cannot be de term ined yet. #
Repeat there qu est aTer a maximum of
30 minutes' driving.
R Engine oil level OK andthe bar display for
indicating the engine oil le vel on the driver dis-
play is green and is between "min" and "max":
th e engine oil le vel is cor rect.
R Engine oil level Top up 1,0 l andthe bar dis-
play for indicating the engine oil le vel on the
driver display is yellow and is below "min": #
Add 1 l of engine oil. 426 426
Maintenance and care

R
Engine oil level Reduce andthe bar display for
indicating the engine oil le vel on the driver dis-
play is yellow and is abo ve"max": #
Drain o. any excess engine oil that has been
added. Todo so, consult a quali/ed specialist
wo rkshop.
R For engine oil level, switch on vehicle #
Switch on theve hicle tocheck the engine oil
le ve l.
R Engine oil level System inoperative: The oil
leve l sensor is defective or not connected. #
Consult a quali/ed specialist workshop.
R Engine oil level currently inoperative #
Close the bonnet.
T T opping up engine oil
opping up engine oil &
W
WARNING
ARNING Risk of burns from hot compo-
nent parts in the engine compartment
Cer tain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of theex haust system. #
Allow the engine tocool down and only
to uch component parts described in the
fo llowing. &
W
WARNING
ARNING Risk of /re and injury from
engine oil
If engine oil comes into contact with hot com-
ponent parts in the engine compartment, it
may ignite. #
Make sure that no engine oil is spilled
next tothe /ller opening. #
Allow the engine tocool o. and thor-
oughly clean the engine oil from compo-
nent parts before starting theve hicle. *
N NOOTE
TE Engine damage caused byan inco r-
re ct oil /lter, incor rect oil or additi ves #
Do not use engine oils or oil /lters which
do not cor respond tothe speci/cations
ex plicitly prescribed forth e service inter-
va ls. #
Follow the inst ructions on the service
inter val display forch anging the engine oil and obser
vethe prescribed change
inter vals. #
Do not use additives. *
N NOOTE
TE Damage caused bytopping up too
much engine oil To
o much engine oil can damage the engine or
th e catalytic con verter. #
Have excess engine oil remo ved at a
qu ali/ed specialist workshop. %
Depending on driving st yle, theve hicle con-
sumes up to0.8 litre of oil per 1000 km. The
oil consum ption may be higher than this when
th eve hicle is new or if you frequently drive at
high engine speeds.
% Depending on the engine, the cap may be
installed in the engine compartment in di.er-
ent locations. Maintenance and care
427
427