2022 MERCEDES-BENZ CLS COUPE Owners Manual

Checking the coolant level
&
WARNING Risk of bur ns from hot compo-
nent parts in the engine compartment
Certain component parts in the engine com-
par
tment can be very hot, e.g. the engine, the
cooler and parts of the exhaust system. 
Allow the engine to cool down and only
t
ouch component parts described in the
following. &
WARNING Risk of scalding fr
om hot cool-
ant
If you open the cap, you could be scalded. 
Let the motor cool down before opening
t
he cap. 
When opening the cap, wear protective
glo

ves and safety glasses. 
Open the cap slowly to release pressure. 
Park the vehicle on a level surface. 
Check the coolant temperature display on the
ins trument display.
The coolant temperature must be below 70°C. 
Slowly turn cap 1 anti-cloc
kwise to release
overpressure. 
Continue turning cap 1 anti-cloc
kwise and
remove it. The coolant level is correct in the following cases:
= If t

he engine is cold, the coolant is up to
marker bar 2.
= If the engine is warm, the coolant is up to
1.5 cm over the marker bar 2. 
If necessary, r
eNll with coolant that has been
approved for Mercedes-Benz.
% Further information on coolant (  pag
e 369). Topping up the windscreen washer system
&
WARNING Risk of bur
ns from hot compo-
nent parts in the engine compartment
Certain component parts in the engine com-
par
tment can be very hot, e.g. the engine, the
cooler and parts of the exhaust system. 
Allow the engine to cool down and only
t
ouch component parts described in the
following. 310
Maintenance and care

&
WARNING !

*
NOTE Damag e from automatic braking If one of the following functions is activated,
t
he vehicle will brake automatically in certain
situations:
= Active Brake Assist
= Active Distance Assist DISTRONIC
= HOLD function
= Active Parking Assist
To avoid damage to the vehicle, deactivate
these systems in the following or similar situa-
tions: 
During towing. 
In a car wash. *
NOTE Damag
e due to unsuitable car wash 
Before driving into a car wash make sure
t

hat the car wash is suitable for the vehi-
cle dimensions. 
Ensure there is suPcient g
round clear-
ance between the underbody and the
guide rails of the car wash. 
Ensure that the clearance width of the
car w

ash, in particular the width of the
guide rails, is suPcient. To avoid damage to your vehicle when using a car
w
ash, ensure the following beforehand:
= Active Distance Assist DISTRONIC is deactiva-
ted.
= The HOLD function is switched oM.
= The 360° camera or the reversing camera is
switched oM.
= The side windows and sliding sunroof are com-
pletely closed.
= The outside mirrors are folded in.
= The blower for the ventilation and heating is
switched oM.
= The windscreen wiper switch is in position g.
= The key is at a minimum distance of 3 m away
from the vehicle. Otherwise, the boot lid could
open unintentionally. =
F
or car washes with a conveyor system:
- Neutral i is engaged.
- If you would like to leave the vehicle while
it is being washed, make sure the key is
located in the vehicle. Park position j
will otherwise be engaged automatically.
% If, aser t
he car wash, you remove the wax
from the windscreen and wiper rubbers, this
will prevent smearing and reduce wiper noise. Information on using a high-pressure cleaner
&
WARNING Risk of an accident when using
high-pr
essure cleaners with round-spray
nozzles
The water jet can cause externally invisible
damag
e.
Components damaged in this way may unex-
pectedly fail. 
Do not use a high-pressure cleaner with
r

ound-spray nozzles. 312
Maintenance and care


Have damaged tyres or chassis parts
r
eplaced immediately. To avoid damage to your vehicle, observe the fol-
lo
wing when using a high-pressure cleaner:
= The key is at a minimum distance of 3 m away
from the vehicle. Otherwise, the boot lid could
open unintentionally.
= Maintain a distance of at least 30 cm to the
vehicle.
= Vehicles with decorative Nlms: Parts of your
vehicle are covered with a decorative Nlm.
Maintain a distance of at least 70 cm between
the Nlm-covered parts of the vehicle and the
nozzle of the high-pressure cleaner. Move the
high-pressure cleaner nozzle around whilst
cleaning. The water temperature of the high-
pressure cleaner must not exceed 60°C.
= Observe the information on the correct dis-
tance in the equipment manufacturer's oper-
ating instructions.
= Do not direct the nozzle of the high-pressure
cleaner directly at sensitive parts, e.g. tyres, gaps, electrical components, batteries, illumi-
nants or louvr

es. Washing the vehicle by hand
*
NOTE Engine damag
e due to water ingress 
Take care not to point the water jet
dir

ectly towards the air inlet grille below
the bonnet. Observe the relevant legal requirements (e.g. in
some countr
ies, washing by hand is permitted
only in specially designated wash bays). 
Use a mild cleaning agent (e.g. car shampoo). 
Wash the vehicle with lukewarm water using a
sos car spong

e. When doing so, do not
expose the vehicle to direct sunlight. 
Carefully hose the vehicle oM wit
h water and
dry using a chamois.
% Observe the notes on the care of car parts
( pag

e 315). Notes on paintwork/matt
Nnish paintw
ork care To avoid damaging the paintwork and interfering
wit

h the driving assistance systems, please
observe the following notes:
Paint
= Insect remains: Soak with insect remover and
rinse oM the treated areas aserwards.
= Bird droppings: Soak with water and rinse oM
aserwards.
= Tree resin, oils, fuels and greases: remove by
rubbing gently with a cloth soaked in petro-
leum ether or lighter Ouid.
= Coolant and brake Ouid: remove with a damp
cloth and clean water.
= Tar stains: use tar remover.
= Wax: use silicone remover.
= Do not attach stickers, Nlms or similar materi-
als. Only have Nlm attached to the bumper at
a qualiNed specialist workshop.
= Remove dirt immediately, where possible. Maintenance and care
313

Matt Nnish
=
Onl
y use care products approved for
Mercedes-Benz.
= Do not attach stickers, Nlms or similar materi-
als. Only have Nlm attached to the bumper at
a qualiNed specialist workshop.
= Do not polish the vehicle and light-alloy
wheels.
= Only use car washes that correspond to the
latest engineering standards.
= Do not use car wash programmes with a Nnal
hot wax treatment.
= Do not use paint cleaners, buPng or polishing
products, gloss preservers, e.g. wax.
In the event of paintwork damage:
= Always have paintwork repairs carried out at a
qualiNed specialist workshop.
= Make sure the radar sensors function
( page 182). Notes on cleaning decorative
Nlms Observe the "Notes on paintwork/matt
Nnish
paintw
ork care" ( page 313). They also apply to
matt decorative Nlms.
Observe the notes on cleaning decorative Nlms to
avoid damage.
Cleaning
= For cleaning, use plenty of water and a mild
cleaning agent without additives or abrasive
substances (e.g. a car shampoo approved for
Mercedes-Benz).
= Remove dirt as soon as possible. Avoid rub-
bing too hard in order not to damage the dec-
orative Nlm irreparably.
= If there is dirt on the Nnish or if the decorative
Nlm is dull: use the paint cleaner recommen-
ded and approved for Mercedes-Benz.
= Insect remains: soak with insect remover and
rinse oM the treated areas aserwards.
= Bird droppings: soak with water and rinse oM
aserwards. =
T
o prevent water stains, dry a Nlm-wrapped
vehicle with a sos, absorbent cloth aser every
car wash.
Avoiding damage to the decorative Nlm
= The service life and colouring of decorative
Nlms are impaired by:
- Sunlight
- Temperature (e.g. hot air blower)
- Weather conditions
- Stone chippings and dirt
- Chemical cleaning agents
- Oily products
= Do not use polish on matt decorative Nlm. Pol-
ishing will have the eMect of shining the Nlm-
wrapped surface.
= Do not treat matt or structured decorative
Nlms with wax. Permanent stains may occur.
Scratches, corrosive deposits, areas aMected by
corrosion and damage caused by incorrect care
cannot always be completely repaired. In this
case, contact a qualiNed specialist workshop. 314
Maintenance and care

You can obtain more information on care and
cleaning ag ents from the manufacturer.
In the case of Nlm-wrapped surfaces, visual diMer-
ences may occur between the surfaces that were
not protected by a decorative Nlm aser a decora-
tive Nlm has been removed.
% Have work or repairs to decorative Nlms car
-
ried out at a qualiNed specialist workshop
(e.g. at a Mercedes-Benz Service Centre). Notes on care of car parts
&
WARNING Risk of entr
apment if the wind-
screen wipers are switched on while the
windscreen is being cleaned
If the windscreen wipers are set in motion
while y
ou are cleaning the windscreen or
wiper blades, you can be trapped by the wiper
arm. 
Always switch oM t
he windscreen wipers
and the vehicle before cleaning the wind-
screen or wiper blades. To avoid damage to the vehicle, observe the notes
on cleaning and car

e of the following car parts:
Wheels and rims
= Use water and acid-free alloy wheel cleaners.
= Do not use acidic alloy wheel cleaners to
remove brake dust. This could damage wheel
bolts and brake components.
= To avoid corrosion of the brake disks and
brakepads, drive the vehicle for a few minutes
aser cleaning before parking it. The brake
disks and brakepads will warm up and dry out.
Windows
* NOTE Damag
e to electronic components
due to excess Ouids When cleaning the windows from the inside,
Ouids
suc

h as cleaning agents or water may
run down and get behind trim parts of the
vehicle interior and cause damage to elec-
tronic components. 
Use cleaning agents as sparingly as pos-
sible. 
Immediately absorb any excess Ouids. =
Clean t
he windows inside and outside with a
damp cloth and with a cleaning agent recom-
mended for Mercedes-Benz.
= Do not use dry cloths or abrasive or solvent-
based cleaning agents to clean the insides of
windows.
% Aser c
hanging the wiper blades or treating
the vehicle with wax, clean the windscreen
thoroughly with cleaning agents recommen-
ded for Mercedes-Benz. Failure to observe the
application instructions may result in damage,
smear marks or dazzling spots.
% Remove external fogging or dirt on the wind-
scr

een in front of the multifunction camera.
Otherwise, driving systems and driving safety
systems may be impaired or unavailable
(  page 182).
Wiper blades
= Mo

ve the wiper arms into the replacement
position (  page 136). Maintenance and care
315

=
W ith the wiper arms folded out, clean the
wiper blades with a damp cloth.
% Make sure that the wiper blades are coated.
The coating ma

y leave residue on a cloth. Do
not rub the wiper blades excessively or clean
them too osen.
Exterior lighting = Clean t

he lenses with a wet sponge and mild
cleaning agent (e.g. car shampoo).
= Use only cleaning agents or cleaning cloths
that are suitable for plastic lenses.
Sensors = Clean the sensors in the front and rear bump-
ers with a sos cloth and car shampoo
( page 182).
= When using a high-pressure cleaner, maintain
a minimum distance of 30 cm.
Reversing camera and 360° camera = Open the camera cover with the multimedia
system ( page 227).
= Use clean water and a sos cloth to clean the
camera lens. =
Do no
t use a high-pressure cleaner.
Trailer hitch = Observe the notes on care in the trailer hitch
manufacturer's operator manual.
= Do not clean the ball neck with a high-pres-
sure cleaner or solvent.
= Remove traces of rust on the ball (e.g. using a
wire brush).
= Remove dirt with a lint-free cloth.
= Aser cleaning, lightly oil or grease the ball
head.
% Before using trailers with anti-torsional cou-
pling, obser

ve the manufacturer's operator
manual. Notes on care of the interior
&
WARNING Risk of injur
y from plastic parts
breaking oM aser the use of solvent-based
care products
Care and cleaning products containing sol-
v
ents can cause surfaces in the cockpit to
become porous. When the airbags are
deployed, plastic parts may break away. 
Do not use any care or cleaning products
cont

aining solvents to clean the cockpit. &
WARNING Risk of injur
y or fatal injuries
from bleached seat belts
Bleaching or dyeing seat belts can severely
w
eaken them.
This can, for example, cause seat belts to tear
or fail in an accident. 
Never bleach or dye seat belts. To avoid damage to the vehicle, observe the fol-
lo
wing notes on cleaning and care: 316
Maintenance and care

Seat belts
= Clean wit
h lukewarm soapy water.
= Do not use chemical cleaning agents.
= Do not dry by heating them to over 80°C or
exposing them to direct sunlight.
Display
= Switch oM the display and let it cool down.
= Clean the surface carefully with a microNbre
cloth and a suitable display care product (TFT-
LCD).
= Do not use any other agents.
Head-up display = Clean with a sos, non-static, lint-free cloth.
= Do not use cleaning agents.
Plastic trim
= Clean with a damp microNbre cloth.
= For heavy soiling: use a cleaning agent recom-
mended for Mercedes-Benz.
= Do not attach stickers, Nlms or similar materi-
als. =
Do no t allow cosmetics, insect repellent or
sun cream to come into contact with the plas-
tic trim.
Real wood and trim elements
= Clean with a microNbre cloth.
= Black piano-lacquer look: clean with a damp
cloth and soapy water.
= For heavy soiling: use a cleaning agent recom-
mended for Mercedes-Benz.
= Do not use solvent-based cleaning agents, pol-
ishes or waxes.
Roof lining
= Clean with a brush or dry shampoo.
Carpet
= Use a carpet and textile cleaning agent recom-
mended for Mercedes-Benz.
Steering wheel made of genuine leather or DINA-
MICA
* NOTE Damag
e caused by wrong cleaners 
Do not use solvent-based cleaning
ag
ents such as tar remover or wheel cleaner; neither should you use polishes
or w

axes. Otherwise you may damage
the Nnish. =
Clean wit
h a damp cloth and 1% soapy water
solution and then wipe with a dry cloth.
= For heavy soiling: use a cleaning agent recom-
mended for Mercedes-Benz.
= Leather care: use a leather care agent that
has been recommended for Mercedes-Benz.
= Do not allow the leather to become too damp.
= Do not use a microNbre cloth.
% Leather is a natural product. It exhibits natural
sur
face properties such as diMerences in
structure, marks caused by growth and injury
or subtle colour diMerences. These surface
properties are characteristics of leather and
not material faults. Leather is also subject to
a natural ageing process during which the sur-
face properties change.
Genuine leather seat covers
= V

acuum up dirt such as crumbs or dust and
then clean the seat covers with a damp cotton Maintenance and care
317