MERCEDES-BENZ S-CLASS COUPE 2018 Owner's Manual

#Park theve hicle on a le vel sur face.
#Check the coolant temp erature display in the
instrument clus ter.
The coolant temp erature must be below
15 8 °F (70 °C).
#Slowly turn cap 1counter-clockwise to
re lease overpressure.
#Continue turning cap 1counter-clockwise
and remo veit.
The coolant le vel is cor rect:
Rifth e engine is cold, up tomar ker bar 2
Rifth e engine is warm, up to0.6 in (1.5 cm)
ov er mar ker bar 2
#If necessar y,top up with coolant that has
been appr ovedby Mercedes-Benz.
RFurther information on coolant (→page 399)
Ad ding washer fluid tothe windshield
wa sher sy stem
&
WARNING Risk of burn s 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.
#Let the engine cool down and only
to uch the component parts described
as follo ws .
&
WARNING Danger of burn s when open‐
ing the hood
If yo u open the hood when the engine has
ove rheated or during a fire inthe engine
compartment, you could come into contact
wit h hot gases or other escaping operating
fl uids.
#Before opening the hood, allow the
engine tocool down.
#Intheeve nt of a fire inthe engine com‐
partment, keep the hood closed and
call thefire service.
&
WARNING ‑ Risk of fire and injury from
windshield washer concentrate
Wi ndshield 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 windshield washer
concentrate spills out next tothefiller
opening.
Maintenance and care 329

#Remo vecap 1bytheta b, place on the edge
of thefiller opening and engage in place.
#Ad dwa sher fluid.
Cleaning and care
Inf ormation onwashing theve hicle in a car
wa sh
&
WARNING Risk of accident due to
re duced braking ef fect af terwa shing the
ve hicle
The braking ef fect is reduced af terwa shing
th eve hicle.
#Afterth eve hicle has been washed,
brake carefully while paying attention to
th e traf fic conditions until the braking
ef fect has been ful lyrestored.
To avo id damage to yourvehicle when using a
car wash, ensure thefo llowing beforehand:
Rto avoid possible water ingress in theve hicle,
it is preferable touse car washes which allow
th e high-pressure pre-cleaning tobe deacti‐
va ted (specification forth e con vertible pro‐
gram).
Rit is imperative toavo id a subsequent hot-
wa x treatment.
Rremo vethe SmartK eyin order toensure that
th e wind deflector on the windshield retracts.
RAc tive Dis tance Assist DISTRONIC and the
HOLD function are deactivated.
Rth e 360° Camera or there ar view camera is
switch ed off.
Rthe side windo wsand soft top are closed
comple tely.
Rth e blo werfo rth eve ntilation/heating is
switched off.
Rth e windshield wiper switch is in position g.
Rin carwashes with a con veyo r sy stem: neu‐
tral iis engaged.
Rthe SmartK eyis at a dis tance of at least 10ft
(3 m) away from theve hicle, otherwise the
trunk lid could open unintentionally.
% Ifyo uwo uld like tolea vetheve hicle while it
is being washed, make sure the SmartK eyis
located in theve hicle. The jgear is other‐
wise automatically engaged.
330 Maintenance and care

%If, af terth e car wash, youre mo vethewa x
from the windshield and wiper rubbers, this
will pr event smearing and reduce wiper
noise.
Information on using a high-pre ssure cleaner
&
WARNING Risk of accident when using
high-pressure cleaning equipment wi th
ro und-s pray nozzles
The wate r jet from a round-s pray nozzle (dirt
grinder) may cause damage totires and sus‐
pension components that is not visible.
Components damaged in this wa yma yfa il
unexpec tedly.
#Do not use high-pressure cleaning
equipment wi thround-s pray nozzles to
clean your vehicle.
#Damaged tires or suspension compo‐
nents must be replaced immediatel y.
Toavo id damage to yourvehicle, obser vethefo l‐
lowing when using a high-pressure cleaner:
RKe ep the SmartK eyat least 10ft(3 m) away
from theve hicle. Otherwise the trunk lid
could open unintentionall y.
RMaintain a distance of at least 11.8 in
(30 cm) totheve hicle.
RVe hicles with deco rative foil: parts of your
ve hicle are co vered with a decorative foil.
Maintain a dis tance of at least 27.6 in
(70 cm) between thefo il-c ove red parts of the
ve hicle and the nozzle of the high pressure
cleaner. Mo vethe high-pressure cleaner noz‐
zle around whilst cleaning.
RObser vethe information on the cor rect dis‐
ta nce in the equipment manufacturer's oper‐
ating instructions.
RDo not point the nozzle of the high-pressure
cleaner directly at sensitive parts such as
tires, the soft top, the wind deflector net, slits, electrical component parts, batteries,
light sources and
ventilation slot s.
Washing theve hicle byhand
Obser vethe legal requirements, e.g. in a number
of countries, washing byhand is only permitted
in specially designated wash ba ys.
#Use a mild cleaning agent, e.g. car shampoo.
#Wa shtheve hicle with luk ewarmwate r using
a soft car sponge. When doing so, do not
ex pose theve hicle todirect sunlight.
#Carefully hose theve hicle off with water and
dry using a chamois. Take care not topoint
th ewate r jet directly towa rdsth e air inlet
grille.
Maintenance and care 331

Notes on paintwo rk/matt finish paintwork care
Observethefo llowing information:
Cleaning and car eA voiding paintwork damage
Pa intwork
RInsect remains: soak with insect remo ver and rinse off the
trea ted areas af terw ards.
RBird droppings: soak with water and rinse off af terw ards.
RCoolant, brake fluid, tree resins, oils, fuel and greases:
re mo veby gently rubbing with a clo thsoaked in petroleum
et her or lighter fluid.
RTa rst ains: use tarre mo ver.
RWa x: use silicone remo ver.
RDo not attach sticke rs,fi lms or similar.
RRe mo vedirt immediatel y,where possible.
Matt finish
ROnly use care products appr oved byMercedes-Benz.RDo not polish theve hicle and light-alloy wheels.
ROnly use car washes that cor respond tothe latest engi‐
neering standards.
RDo not use car wash programs with a final hot wax treat‐
ment.
RDo not use paint cleane rs, buf fing or polishing products,
gl oss preser vers, e.g. wax.
RAlw ays ha vepaintwork repairs car ried out at a qualified
specialist workshop.
332
Maintenance and care

Cleaning NightView Assist
Camera behind the windshield
* NO
TEDama getothe camera lens when
cleaning
If yo u clean the camera lens yourself or spray
gl ass cleaner on the camera lens, you could
damage the camera lens.
#When cleaning thefield of vision of the
driving sy stems, do not spr ayglass
cleaner on the camera lens.
#Ifth e camera lens is dirty, please con‐
ta ct a qualified specialist workshop.
#Fo ld down the camera co verby handle
re cess 1.
#Use a clo thtoclean the windshield in front of
th e camera. Camera in
thera diator grillCamera lens 2is cleaned at regular inter vals
by operating the windshield washer sy stem.
#Use clear water and a soft clo thtoclean
came ralens 2when it is very dirty.
Maintenance and care 333

Notes on cleaning and care of the soft top
Obser vethefo llowing information:
Note s on cleaning and car eA voiding soft- top damage
Light soiling
RClean the soft top when dr y.
RRinsewit hclean water.
RNever use gasoline, thinners, tarre mo ver or stain remo ver
or other or ganic sol vents.
RRe mo vebird droppings immediatel y,as they are cor rosive
and can therefore cause the soft- topfabric toleak.
RNe ver use a high-pre ssure cleaner.
RDo not use sharp-edged equipment toremo veice and
sno w.
Norm
alto heavy
soiling
RClean the soft top with a brush and clean water.
RClean stains and other dirt with a brush and soft-top
cleaning agents recommended and appr ovedby
Mercedes-Benz.
RAlw ays brush from front toback in the direction of the
fa bric.
Fr equent cleaning reduces the soft top's resist‐
ance todirt. Torestore the ef fect, clean the soft
to p with the care products and cleaning agents
re commended and appr ovedby Mercedes-Benz.
Incor rect cleaning and care, as well as aging,
can cause the soft- top seams toleak. Ha vethe
soft-top seams sealed at a qualified specialist
wo rkshop, e.g. at your Mercedes-Benz service
cen ter. %
Place a suitable co verove rth e soft top if you
plan tolea vetheve hicle outside for a long
period of time.
Cleaning AI RCAP
Cleaning the wind deflector
Re quirements:
RThe soft top is closed.
RApply the electric parking brake manually.
RThe ignition is switched on.
RNe ver use a po werwa sher toclean the net of
th e wind deflector.
334
Maintenance and care

#Openthe co ver on the lo wer center console.
#Press button 1.
The wind deflector between the windshield
and the soft topex tends.
#Light soiling: clean wind deflector net 1
with a soft brush or a moist clo th.
#Heavier soiling: clean wind deflector net 1
with care products and cleaning agents rec‐
ommended and appr ovedby Mercedes-Benz.
#Subsequentl y,rinse off wi thclean water.
Cleaning the wind screen
Re quirements:
RThe soft top is open.
RApply the electric parking brake manually.
RThe ignition is switched on.
#Open the co ver on the lo wer center console.
#Press button 1.
The AIR CAP wind screen mo ves upwards.
Maintenance and care 335

#Cleanwindscreen net 1with a damp clo th
in conjunction with the care products and
cleaning agents recommended and appr oved
by Mercedes-Benz.
Cleaning thefo lding wind screen
Re quirements:RNe ver use a po werwa sher toclean the net of
th e wind deflector.
RObser vethe no tes on the cor rect ins tallation
and stow ing location of thefo lding wind
screen (
→page 79).
#Clean the net of thefo lding wind screen with
a damp clo thin conjunction with the care
products and cleaning agents recommended
and appr ovedby Mercedes-Benz.
Note s on care of vehicle parts
&
WARNING Risk of entrapment if the
windshield wipers are switch ed on while
th e windshield is being cleaned
If th e windshield wipers are set in motion
while you are cleaning the windshield or
wiper blades, you can betrapped bythe
wiper arm.
#Alw ays switch off the windshield wipers
and the ignition before cleaning the
windshield or wiper blades.
& WARNING Risk of burn s fromtailpipes
and tailpipe trim
The tailpipe and tailpipe trim can become
ve ry hot. If you come into contact with these
parts of theve hicle, you could burn yourself.
#Alw ays be particular lycareful around
th eta ilpipe and theta ilpipe trim.
#Allow theve hicle parts tocool down
before youto uch them.
336
Maintenance and care

Observethefo llowing information:
Information on cleaning and car eAvoiding vehicle damage
Wheels/rims Usewate r and acid-free wheel cleaners.
RDo not use acidic wheel cleaners toremo vebrake dust.
This could damage wheel bolts and brake components.
RTo avoid cor rosion of the brake discs and brake pads,
drive theve hicle for a few minutes af ter cleaning before
parking it. The brake discs and brake pads warm up and
dr y out.
Wi ndo ws
Cleanthe windo wsonthe inside and outside using a damp
clo thand cleaning agents recommended byMercedes-Benz. Do not use dry clo
ths or abrasive or sol vent-based cleaning
agents toclean the inside of windo ws.
Wi per blades
Fold out the wiper blades and clean them using a damp clo th.D o not clean the wiper blades too of ten.
Ex terior lighting
Cleanthe lenses with a wet sponge and mild cleaning agent,
e.g. car sha mpoo. Only use cleaning agents or cleaning clo
thsth at are suitable
fo r plast ic lenses.
Sensors Cleanthe sensors in the front and rear bumper and in the
ra diator trim with a soft clo thand car shampoo. When using a high-pressure
water jet, maintain a minimum
dis tance of 11.8 in (30 cm).
Maintenance and care 337

Information on cleaning and careAvoiding vehicle damage
Re ar view camera
and 360° Camera
ROpen the camera co ver with the multimedia sy stem
(→page 186).
RUs e clear water and a soft clo thtoclean the camera lens. Do not use a high-pressure
water jet.
Exhaust pipes Clean with cleaning agents recommended byMercedes-Benz,
particular lyin the winter and af terwa shing theve hicle. Do not use acidic cleaning agents.
Note
s on care of the interior
&
WARNING Risk of injury from plastic
parts breaking off af terth e use of sol‐
ve nt-based care products
Ca reand cleaning products con taining sol‐
ve nts can cause surf aces inthe cockpit to
become porous.
When the airbags are deplo yed, plastic parts
may break away.
#Do not use any care or cleaning prod‐
ucts containing sol vents toclean the
cockpit.
& WARNING Risk of injury or death from
bleached seat belts
Bleaching or dyeing seat belts can se verely
we aken them.
This can, forex ample, cause seat belts to
te ar or fail in an accident.
#Ne ver bleach or dye seat belts.
338
Maintenance and care