2021 MERCEDES-BENZ S-CLASS SALOON LONG open bonnet

#
Turn cap 1anti-clockwise and remo veit. #
Top up the engine oil. #
Replace cap 1and turn it clockwise until it
engages. #
Check the oil le vel again (/ page 426). Chec
Chec
king t
king t he coolant lev
he coolant lev el
el &
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 scalding from hot cool-
ant
If yo u open the cap, you could be scalded. #
Let the mo tor cool down before opening
th e cap. #
When opening the cap, wear pr otective
glo ves and saf ety glasses. #
Open the cap slo wlytorelease pressure. #
Only ha vethe coolant checked or re/lled at a
qu ali/ed specialist workshop. T
T
opping up t
opping up t he windscr
he windscreen w
een washer syst
asher syst em
em &
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 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. 428
428
Main
tenance and ca re

#
Allow the engine tocool down and only
to uch component parts described in the
fo llowing. &
W
WARNING
ARNING ‑ Risk of /re and injury due to
windscreen washer concent rate
Wi ndsc reen washer concent rate is highly 0am-
mable. It could ignite if it comes into contact
with hot engine component parts or the
ex haust system. #
Make sure that no windscreen washer
concent rate spills out next tothe /ller
opening. #
Remo vecap 1bytheta b. #
Top up thewa sher 0uid.
% Further information about the windscreen
wa sher 0uid (/ page 490) K K
eeping t
eeping t he air
he air-w
-wat
ater duct fr
er duct fr ee
ee #
Keep the area between the bonnet and the
windscreen free of deposits, e.g. ice, snow
and lea ves. Cleaning and care Cleaning and care
Inf
Inf
or
ormation on w
mation on w ashing t
ashing the v
he vehicle in a car w
ehicle in a car w ash
ash &
W
WARNING
ARNING Risk of an accident due to
re duced braking po wer aTer washing the
ve hicle
Braking e1ciency is reduced aTer washing the
ve hicle. #
ATer theve hicle has been washed, brake
carefully while paying attention tothe
tra1c conditions until braking po wer has
been fully restored. Maintenance and ca
re
429
429

#
Have damaged tyres or chassis parts
re placed immediatel y. To
avo id damage toyour vehicle, obser vethefo l-
lowing when using a high-pressure cleaner:
R The key is at a minimum dis tance of 3 m away
from theve hicle. Otherwise the boot lid or a
door could open unintentionall y.
R Maintain a distance of at least 30 cm tothe
ve hicle.
R V
Vehicles wit
ehicles wit h decor
h decorativ
ative f
e foil:
oil: Parts of your
ve hicle are co vered with a decorative foil.
Maintain a distance of at least 70 cm between
th efo il-co vered parts of theve hicle and the
nozzle of the high-pressure cleaner. Mo vethe
high-pressure cleaner nozzle around whilst
cleaning. The waterte mp erature of the high-
pressure cleaner must not exceed 60°C.
R Obser vethe information on the cor rect dis-
ta nce in the equipment manufacturer's oper-
ating inst ructions.
R Do not direct the nozzle of the high-pressure
cleaner directly at sensitive parts, such as tyres,
gaps, electrical components, batteries,
light sources and ventilation slits. W W
ashing t
ashing t he v
he vehicle b
ehicle b y hand
y hand *
N
NOOTE
TE Engine damage due towa ter ing ress #
Take care not topoint thewa ter jet
directly towa rdsth e air inlet grille below
th e bonnet. obser
vethe legal requ irements, e.g. in a number
of countries, washing byhand is only permitted in
special lydesignated wash ba ys. #
Use a mild cleaning agent, e.g. car shampoo. #
Washtheve hicle with luk ewarm water using a
soT car sponge. When doing so, do not
ex pose theve hicle todirect sunlight. #
Carefully hose theve hicle o. with water and
dry using a chamois.
% Obser vethe no tes on the care of car parts
(/ page 433). N No
ot
tes on paintw
es on paintw or
ork/matt
k/matt /nish
/nishpaintw
paintw or
ork care
k care To
avo id damaging the paintwork and inter fering
with the driving assistance systems, please
obser vethefo llowing no tes:
P
P aint
aint
R Insect remains: soak with insect remo ver and
ri nse o. the treated areas aTer wards.
R Bird droppings: soak with water and rinse o.
aTer wards.
R Tree resin, oils, fuels and greases: remo veby
ru bbing gently with a clo thsoaked in petro-
leum ether or lighter 0uid.
R Coolant and brake 0uid: remo vewith a damp
clo thand clean water.
R Tar stains: use tarre mo ver.
R Wax: use silicone remo ver.
R Do not attach sti ckers, /lms or similar materi-
als. Only ha ve/lm attached tothe bumper at
a quali/ed specialist workshop.
R Remo vedirt immediatel y,where possible. Main
tenance and ca re
431
431

Obser
vethe additional following points when
ch arging the batter y:
R Only use battery charge rs tested and
appro vedfo r Mercedes-Benz.
R Read the battery charge r's operating inst ruc-
tions before charging the batter y.
Obser vethe additional following points during
starting assistance:
R Starting assis tance may only be pr ovided
using vehicles, batteries or other jump start
devices with a nominal voltage of 12 V.
R The vehicles must not touch.
R V
Vehicles wit
ehicles wit h a pe
h a petr
trol engine:
ol engine: jump-start the
ve hicle only when the engine and exhaust sys-
te m are cold. S
S
t
tar
ar ting assist
ting assist ance and c
ance and c har
harging t
ging t he 12 V batt
he 12 V batt ery
ery Pr
Pr
epar
epar ing f
ing for st
or st ar
arting assist
ting assist ance/t
ance/the c
he char
harging
ging
pr
pr ocess
ocess #
Secure theve hicle byapplying the electric
parking brake. #
ShiT the transmission toposition j. #
Switch o. theve hicle and all elect rical con-
sumers. #
Open the bonnet. #
Open co ver1. #
Slide pr otective co ver2 of POSITIVE contact
3 onthe jump-start connection point in the
direction of the ar row. S
S
t
tar
ar ting assist
ting assist ance
ance #
Connect the POSITIVE contacts of theve hi-
cles with the jump lead. Start with your own
ve hicle /rst. #
Start the engine of the donor vehicle and run
it at idling speed. #
Connect the negative term inal of the donor
battery toear thpoint of your vehicle 4using 448
448
Breakdown assis
tance

Opening
Opening
%
Depending on theve hicle equipment, access
to the fuse box may be limited. Mercedes-
Benz recommends consulting a quali/ed spe-
cialist workshop, e.g. a Mercedes-Benz
Se rvice Centre. &
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 vehicle before opening the engine
bonnet. #
Release thero tary catches on co ver1 and
pull the co ver up and out. #
Remo veany existing moisture from the fuse
box using a dry clo th. #
Depending on theve hicle equipment, there
may be an electrical component 2onthe
fuse box lid. If present, unscrew screw 3 and
put the component tothe side without discon-
necting the electrical connection. #
If present, release hoses 4from thereta ining
clips on the fuse box and vehicle body. 458
458
Breakdown assis
tance

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
C *A
t least one door is open. #
Close all doors.
Bonnet unlatched Pull lever
again to open *T
he bonn etis not fully unloc ked. &
W WARNING
ARNING Risk 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. #
Toopen the bonnet full y,pull the handle again (/ page 424).
Bonnet not locked Close
before starting journey *T
he bonn etis not loc ked. &
W WARNING
ARNING Risk 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. #
Close the bonnet (/ page 424). 522
522
Display messages and
warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Bonnet not locked Stop
immediately Close bonnet
completely *T
he bonn etis not loc ked. &
W WARNING
ARNING Risk 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. #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Close the bonnet (/ page 424).
M *T
he bonn etis open. &
W
WARNING
ARNING Risk 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. #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Close the bonnet. Display messages and
warning/indicator lamps
523
523

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Cannot start vehicle See
Owner's Manual *T
hevehicle cann otbe star ted. #
Switch theve hicle o. and switch it back on #
Ifth e display message still appears, consult a quali/ed specialist workshop.
+
Top up coolant See Own-
er’s Manual *T
he coolant le vel is too lo w.
* N NO
OTE
TE Engine damage due toinsu1cient coolant #
Avoid long journe yswith insu1cient coolant. #
Add coolant (/ page 428). #
Have the engine cooling system checked at a quali/ed specialist workshop.
ÿ
Coolant Stop Switch off
the vehicle *T
he coolant is too hot. #
Stop immediately in accordance with the tra1c conditions and switch o. theve hicle. &
W WARNING
ARNING Risk of burns when opening the bonnet
If yo u open the bonnet in theev ent of an overheated engine or /re in the engine compartment, thefo llowing situa-
tions may occur:
R You may come into contact with hot gases.
R You may come into contact with other escaping hot operating 0uids. 526
526
Displ
aymessages and warning/indicator lamps