oil pressure MERCEDES-BENZ S-CLASS SALOON LONG 2021 Owners Manual

#
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

#
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

R
With th e wiper arms folded out, clean the
wiper blades with a damp clo th.
% Make sure that the wiper blades are coated.
The coating can lea veresidues on a clo th. Do
not rubth e wiper blades excessively or clean
th em too oTen.
Ext
Ext er
erior lighting
ior lighting
R Clean the lenses with a wet sponge and mild
cleaning agent, e.g. car sha mpoo.
R Only use cleaning agents or cleaning clo ths
th at are suitable for plastic lenses.
V
V ehicle soc ke
ehicle soc ket (high-v
t (high-v olt
oltag
age batt
e batt er
ery)
y)
R Use clean water and a soT clo thtoclean the
ve hicle soc ket.
R Do not use high-pressure cleaners or cleaning
agents, such as soap.
Sensors Sensors
R Clean the sensors in the front and rear bump-
ers with a soT clo thand car shampoo
(/ page 267).
R When using a high-pressure cleaner, main tain
a minimum distance of 30 cm. R
R
e
ev
ver
er sing camer
sing camer a and 360° Camera
a and 360° Camera
R Open the camera co ver with the multimedia
system (/ page 317).
R Use clean water and a soT clo thtoclean the
camera lens.
R Do not use a high-pressure cleane r.
T
T ailpipes
ailpipes
R Clean with a cleaning agent recommended for
Mercedes-Benz, especially in the winter and
aTer washing theve hicle.
R Do not use acidic cleaning agents.
Tr
Tr ailer hitch
ailer hitch
R Obser vethe no tes on care in the trailer hitch
manufacturer's operator manual.
R Do not clean the ball neck with a high-pres-
sure cleaner or sol vent.
R Remo vetraces of rust on the ball, forex ample,
with a wire brush.
R Remo vedirt with a lint-free clo th.
R ATer cleaning, lightly oil or grease the ball
head. %
Before using trailers with anti-torsional cou-
pling, obser vethe manufacturer's operator
manual. N No
ot
tes on car
es on car e of t
e of the int
he int er
erior
ior &
W
WARNING
ARNING Risk of injury from plastic parts
breaking o. aTer the use of sol vent-based
ca re products
Care and cleaning products containing sol-
ve nts can cause sur faces in the cockpit to
become porous. When the airbags are
deplo yed, plastic parts may break away. #
Do not use any care or cleaning products
containing sol vents toclean the cockpit. &
W WARNING
ARNING Risk of injury or fatal injuries
from bleached seat belts
Bleaching or dyeing seat belts can se verely
we aken them.
This can, forex ample, cause seat belts to tear
or fail in an accident. #
Never bleach or dye seat belts. 434
434
Maintenance and care

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Switch o. theve hicle. #
Add 1 l of engine oil (/ page 427). #
Check the engine oil le vel.
No tes on engine oil (/ page 487).
5
Engine oil pressure Stop
Switch off the vehicle *T
he oil pressure is too lo w.
* N NO
OTE
TE Engine damage caused bydriving with insu1cient oil pressure #
Avoid driving with insu1cient oil pressure. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. #
Switch o. theve hicle. #
Consult a quali/ed specialist workshop.
5
Engine oil level cannot be
measured *T
he elect rical connection tothe oil le vel sensor has been inter rupted or the oil le vel sensor is faulty. #
Consult a quali/ed speciali stwo rkshop. 570 570
Displ
aymessages and warning/indicator lamps

C
C
Calls
Calls Mercedes me......................................... 400
Camera
Camera, ROAD SURF ACE SCAN
Information........................................... .267
Car w
Car w ash (car
ash (car e)
e)............................................ 429
Car
Car -t
-to-X
o-X -Communication
-Communication
Displaying hazard warnings.................... 394
Care
Care 360° camera......................................... 433
Air-water duct........................................ 429
Automatic car wash.............................. .429
Carpet................................................... 434
Decorative foil........................................ 432
Display................................................... 434
EAS Y-PA CK bo otbox.............................. 434
Exterior lighting...................................... 433
Head-up display..................................... 434
High-pressure cleaner............................ 430
Pa int...................................................... 431
Plastic trim............................................4 34
Re alwo od/trim elements......................4 34
Re versing camera..................................4 33
Ro of lining............................................. 434 Seat belt................................................ 434
Seat co
ver............................................. 434
Sensors................................................. 433
St eering wheel....................................... 434
Ta ilpipes................................................ 433
Tr ailer hitc h............................................ 433
Ve hicle soc ketfo rth e high-voltage
battery................................................... 433
Wa shing byhand.................................... 431
Wheels/rims.......................................... 433
Wi ndo ws................................................ 433
Wi per blades.......................................... 433
Car Car pe
pet (Car
t (Car e)
e)............................................... 434
Centr
Centr e airbag (dr
e airbag (dr iv
iver
er , fr
, fr ont passeng
ont passeng er)
er)............ 53
Changing g
Changing g ears
ears, Selecting a gear
Manually................................................ 233
Changing hub caps
Changing hub caps ....................................... 470
Char
Char ging
ging
At time of depa rture............................... 387
Char geleve l displa y............................... 258
Charg ing cable control panel.................. 247
Con/guring weekly pro/le...................... 387
Ending thech arging process (alternat-
ing cur rent, mode 2/3).......................... 253 Ending
thech arging process (direct
cur rent, mode 4).................................... 257
Indica tor lamps on vehicle soc ket........... 248
Maximum charging cur rent (mains
soc ket).................................................. 246
No tes - charging station (mode 3)......... .245
No tes - fast charging station (mode 4)... .246
No tes - mains soc ket (Mode 2)............... 244
No tes - wallbox (mode 3)........................ 245
No tes on charging the high-voltage
battery................................................... 241
No tes on wireless chargin g.................... 164
On-boa rdelectrical system battery
(12 V).................................................... 448
St arting thech arging process (alter-
nating cur rent, mode 2/3)..................... 250
St arting thech arging process (direct
cur rent, mode 4).................................... 254
St ow ing thech arging cable.................... 241
USB port............................................... .161
Char Char ging cable
ging cable
Control panel......................................... 247
St ow ing................................................. 241
Chau.eur Chau.eur mode
mode, Seat
Fo lding the head restraint ba ck/up........ 128 Ind
ex
595
595

Û
Battery overheated Stop, every-
body out! Outdoors if possible ................ 511
Ø Beginning emer gency stop............ 542
J Brake immediate ly........................ 536
Á Change key batteries .................... 501
è Charger cable connected .............. 509
J Check brake 0uid le vel.................. 536
ï Check trailer hitch lock (white
display message) .................................... 517
h Check tyre(s) ................................ 563
! Clean the fuel /lter....................... 527
É Compressor is cooling .................. 552
ÿ Coolant Stop Switch o. the
ve hicle ................................................... 526
! currently una vailable See Own-
er's Manual............................................5 54
÷ currently una vailable See Own-
er's Manual............................................5 55
5 Engine oil le vel cannot be meas-
ured....................................................... 570 5
Engine oil le velRe duce oil le vel..... 569
5 Engine oil le velSt op Switch o.
th eve hicle ............................................. 569
5 Engine oil pressure Stop Switch
o. theve hicle ....................................... .570
ä Fault Drive at max. 80 km/h
...................................................... 549, 550
ä Fault Stop.................................... .551
6 Front leT malfunction Consult
wo rkshop (e xample)...............................4 97
6 Fueltank is depre ssurised
Re ady forre fuelling............................... .514
Û Have high- voltage system
ch ecked See Owner's Manual ................ 512
& inoperative Battery low................. 506
& Inoperative Char gehigh- voltage
battery................................................... 507
& inoperative High-voltage battery
ch arging inco mplete ............................... 507
& Inoperative Refuel vehicle ............ .506 &
inoperative See Owner's Man........ 506
! inoperative See Owner's Manual.. .555
÷ inoperative See Owner's Manual.. .556
T inoperative See Owner's Manual.. .557
G Inoperative................................... 558
¥ Intensive cleaning activated for
30 s....................................................... 525
Á Key being initialised Please wait.... 502
Á Key not de tected (red display
message)...............................................5 01
Á Key not de tected (white display
message)...............................................5 01
: LeT dipped beam (e xample).......... 502
6 LeT windowbag malfunction
Consult workshop (e xample).................. 498
: Malfunction See Owner's Man-
ual.........................................................5 03
Û Malfunction Visit workshop ........... 511
d Malfunction.................................. 512
Û Malfunction.................................. 511 Index
599 599