2020 MERCEDES-BENZ S-CLASS SALOON LONG check oil

R
frequent operation in mountainous terrain or
on poor road sur faces
R when the engine is of ten le ftidling for long
periods
R operation in particula rly dusty conditions
and/or if air-recirculation mode is frequently
used
In these or similar operating conditions, ha vethe
interior air filter, engine air cleaner, engine oil
and oil filter etc. changed more frequent ly. The
tyres must be checked more frequently if the
ve hicle is operated under increased loads. Fur‐
th er information can be obtained at a qualified
specialist workshop. Battery disconnection periods
The ASS
YST PLUS service inter val display can
calculate the service due date only when the
battery is connec ted. #
Display the service due date on the driver
display and no teit down before disconnect‐
ing the battery (/ page 347). Engine compartment
Ac
tive bonn et(pedestrian pr otection) Operation of
the active bonnet (pedestrian
pr otection)
In cer tain accident situations, the actuation of
th e active bonn etreduces therisk of injury to
pedestrians. The rear area of the bonn etis
ra ised byappr oximately 80 mm.
Af ter being triggered, the active bonn etremains
in thera ised position. Limited visibility due to
th era ised bonn etcannot be ruled out.
Af terth e active bonn ethas been actuated,
pedestrian pr otection may be limited.
Ha ve the full functionality of the active bonn et
re stored immediately in a qualified specialist
wo rkshop.
If necessar y,adjust your seat position and drive
carefully toaqu alified specialist workshop. If a
safe continued journey is not possible, contact a
qu alified specialist workshop. Opening and closing
the bonnet &
WARNING Risk of accident due todriv‐
ing with the bonn etunlo cked
The bonn etmay open and block your vie w. #
Neverre lease the bonn etwhen driving. #
Before every trip, ensure that the
engine bonn etis loc ked. &
WARNING Risk of accident and inju ry
when opening and closing the bonn et
The bonnet may suddenly drop into the end
position.
There is a risk of injury for an yone in the
engine bonn et's range of mo vement. #
Do not open or close the bonn etifth ere
is a person in the bonn et's range of
mo vement. 348
Maintenance and care

R
Engine oil level Reduce andthe bar display
fo r indicating the oil le vel on the driver dis‐
play is yellow and is abo ve"max": #
Drain off any excess engine oil that has been
added. Todo so, consult a qualified specialist
wo rkshop.
R For engine oil level switch on ignition #
Switch on the ignition tocheck the engine oil
le ve l.
R Engine oil level System inoperative : The oil
le ve l sensor is defective or not connec ted. #
Consult a qualified specialist workshop.
R Engine oil level currently inoperative #
Close the bonn et.
To pping up engine oil &
WARNING Risk of bu rns from hot com‐
ponent parts in the engine compartment
Cer tain component parts in the engine com‐
partment can be very hot, e.g. the engine,
th e cooler and parts of theex haust sy stem. #
Allow the engine tocool down and only
to uch co mponent parts described in
th efo llowing. &
WARNING Risk offire and injury from
engine oil
If engine oil comes into con tact wi thhot
component parts in the engine compart‐
ment, it may ignite. #
Make sure that no engine oil is spilled
next tothefiller opening. #
Allow the engine tocool off and thor‐
oughly clean the engine oil from compo‐
nent parts before starting theve hicle. *
NO
TEEngine dama gecaused byan
incor rect oil filter, incor rect oil or addi‐
tives #
Do not use engine oils or oil filters
which do not cor respond tothe specifi‐
cations explicitly prescribed forthe
service inter vals. #
Follow the instructions on the service
inter val display forch anging the engine
oil and obser vethe prescribed change
inter vals. #
Do not use additives. *
NO
TEDama gecaused bytopping up too
much engine oil To
o much engine oil can damage the engine
or the catalytic con verter. #
Have excess engine oil remo ved at a
qu alified specialist workshop. %
Depending on driving style, theve hicle con‐
sumes up to0.8 litr e of oil pe r10 00 km. The
oil consum ption may be higher than this
when theve hicle is new or if you frequently
drive at high engine speeds.
% Depending on the engine, the cap may be
ins talled in the engine compartment in dif‐
fe re nt locations. Maintenance and care
351

#
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 350). Checking
the coolant le vel &
WARNING Risk of bu rns from hot com‐
ponent parts in the engine compartment
Cer tain component parts in the engine com‐
partment can be very hot, e.g. the engine,
th e cooler and parts of theex haust sy stem. #
Allow the engine tocool down and only
to uch co mponent parts described in
th efo llowing. &
WARNING Risk of scalding from hot
coolant
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
gl ove s and saf etygl asses. #
Open the cap slowly torelease pres‐
sure. #
Only ha vethe coolant checked or refilled at a
qu alified specialist workshop. To
pping up the windsc reen washer sy stem &
WARNING Risk of bu rns from hot com‐
ponent parts in the engine compartment
Cer tain component parts in the engine com‐
partment can be very hot, e.g. the engine,
th e cooler and parts of theex haust sy stem. #
Allow the engine tocool down and only
to uch co mponent parts described in
th efo llowing. &
WARNING ‑ Risk of fire and injury due to
windscreen washer concentrate
Wi ndsc reen washer concentrate is highly
fl ammable. It could ignite if it comes into
con tact wi thhot engine component parts or
th eex haust sy stem. #
Make sure that no windsc reen washer
concentrate spills out next tothefiller
opening. 352
Maintenance and care

Ad
Blue ®
re sidues cr ystallise af ter a period of
time, and contamina tethe sur faces wi thwhich
th ey come into contact. Clean the dirty sur faces
wi th wate r as soon as possible.
When you open theAd Blue ®
tan k,small
amounts of ammonia vapour may escape. Do
not inhale any ammonia vapours that may be
re leased. Only fill th eAd Blue ®
tank in well-venti‐
lated areas.
Ad Blue ®
filling capacity and consum ption Model
Total capacity
All models 25.0 litres Ad
Blue ®
consu mption
The average AdBlue ®
consu mption is between
1% and 5% of fuel consumption. Li kefuel con‐
sum ption, AdBlue ®
consu mption is highly
dependent upon driving style and operating con‐
ditions. Forth is reason, your vehicle's actual
consum ption figures under da y-to -day ope rating
conditions may di ffer from the consum ption fig‐
ures calculated. The frequency at which you will ha
ve to to p up AdBlue ®
will also vary. Ha vethe
Ad Blue ®
supply checked at a qualified specialist
wo rkshop before making journe ysoutside of
Europe. Before a longer stay outside of Europe,
consult a qualified specialist workshop.
Ad Blue ®
ra nge and fill le vel
The AdBlue ®
fill le vel and range can be displ ayed
via the driver displa y.The AdBlue ®
ra nge shown
depends strongly on the driving style and operat‐
ing conditions. The actual range can therefore
deviate from thera nge cur rently displ ayed in the
driver's displa y.The information supplied in the
Owner's Manual rega rding there ser vequantity
at thefirs t display warning and on the minimum
to p-up quantity when the fuel tank is em pty is
also tobe under stood as guide values. Engine oil
Note
s on engine oil
Obser vethe no tes on operating fluids
(/ page 480). *
NO
TEEngine dama gecaused byan
incor rect oil filter, incor rect oil or addi‐
tives #
Do not use engine oils or oil filters other
th an those which meet the specifica‐
tions necessary forth e prescribed
service inter vals. #
Do not alter the engine oil or oil filter in
order toachie velonger change inter vals
th an presc ribed. #
Do not use additives. #
Have the engine oil changed af terthe
prescribed inter vals. Te
ch nical da ta485

Display messages
Possible causes/consequences and M
MSolutions #
Switch off the engine. #
Add 1 l of engine oil (/ page 351). #
Check the engine oil le vel.
No tes on engine oil (/ page 485).
5
Engine oil pressure Stop
Switch off engine *T
he oil pressure is too lo w.
* NO
TEEngine dama gecaused bydriving with insuf ficient oil pressure #
Avoid driving with insuf ficient oil pressure. #
Stop theve hicle immediately in accordance with the traf fic conditions. Do not continue driving. #
Consult a qualified specialist workshop.
5 Engine oil level cannot be
measured *T
he electrical connection tothe oil le vel sensor has been inter rupte d or the oil le vel sensor is faulty. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 549

Display message
Calling up (driver display)...................... 492
Notes....................................................4 92
Display messages ç - - - km/h ..................................... 523
È - - - km/h ..................................... 522
# 12V on-board electrical sys‐
te m Visit workshop ...............................5 38
Û 48 V battery See Owner's Man‐
ual......................................................... 540
: Active Light Sy stem inoperative... 499
¯ AdBlue sy stem fault Engine
st art not possible................................. .547
¯ AdBlue sy stem fault See Own‐
er's Manual .......................................... .546
¯ AdBlue sy stem malfunction
Emerg. op.: max. XXX km/h Start
not poss. in XXX km............................. .547
¯ AdBlue sy stem malfunction
Emer gency op. in XXX km See Own‐
er's Manual........................................... 5465
Add 1 litre engine oil when
next refuelling....................................... 548
é ATTENTION ASSIST inoperative ....521
P ATTENTION ASSIST Microsleep
Ta ke a break! ........................................ .522
é ATTENTION ASSIS T:Take a
break!....................................................5 22
: Automatic driving lights inoper‐
ative...................................................... 498
Ø Beginning emer gency stop........... 525
J Brake immediately....................... 520
Á Change key bat teries ...................4 96
J Checkbrake fluid le vel................. 520
# Check brake pads See Owner's
Manual.................................................. 521
ï Check trailer hitch lo ck................ 503
h Check tyre(s)................................ 542
! Clean the fuel filter ...................... .512
ÿ Coolant Stop vehicle Switch
engine off..............................................5 10á
currently una vailable Camera
dirty....................................................... 529
¸ Currently una vailable Radar
dirty.......................................................5 28
! currently una vailable See Own‐
er's Manual .......................................... .533
÷ currently una vailable See Own‐
er's Manual .......................................... .535
5 Engine oil le vel cannot be
measured .............................................. 549
5 Engine oil le velRe duce oil le vel.... 548
5 Engine oil le velSt op vehicle
Switch engine off.................................. 548
5 Engine oil pressu reStop
Switch off engine.................................. 549
ä Fault Drive at max. 80 km/h........ 530
6 Front left malfunction Consult
wo rkshop (e xample).............................. 493
& inoperative Battery low................. 501
& Inoperati veRefuel vehicle ............ 501 Index
575