MERCEDES-BENZ CLA 2023 Owners Manual

Park the vehicle on a level surface.Check the coolant temperature display on theinstrument display.
The coolant temperature must be in the bot-
tom quarter of the temperature indicator.Slowly turn cap 1 counter-clockwise to
release overpressure.Continue turning cap 1 counter-clockwise
and remove it.
The coolant level is correct in the following cases:
= If the engine is cold, the coolant is up to
marker bar 2.
= If the engine is warm, the coolant is up to
0.6 in (1.5 cm) over the marker bar 2.
If necessary, reNll with coolant that has been
approved for Mercedes-Benz.\bFurther information on coolant (  page 339).
ReNlling the windshield washer system
&WARNING Risk of burns from hot compo-
nent parts in the engine compartment
Certain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of the exhaust system.
Allow the engine to cool down and only
touch component parts described in the
following.&WARNING !

Remove cap 1 by the tab.Add washer Ouid.\bFurther information about the windshield
washer Ouid ( page 339)Keeping the air/water duct freeKeep the area between the hood and the
windshield free of deposits, e.g. ice, snow or
leaves.
Checking the brake lining thickness
Bring the vehicle and wheels into a suitable
position so that you can position the gage.\bMeasuring point 3 for the test gage depends
on the equipment. The gage is positioned at
point 3, which is located either in the center
of the brake lining or at the upper end to the side, depending on the brake caliper.Switch oM the vehicle.Secure the vehicle against rolling away.Take the gage out of the vehicle document
wallet in the glove compartment.Place the test gage between the wheel spokes
at measuring point 3 on the brake lining.Hold the gage vertically to brake disc 1 and
slide measuring pin 2 onto brake disc 1.Check which color Neld 4 the arrow on
measuring pin 2 is pointing to.
Green: the brake lining thickness is suPcient.
Red: the brake lining thickness is not suP-
cient. Have the brake linings checked at a
qualiNed specialist workshop.270Maintenance and care

\bTo avoid an inaccurate measurement:= Make sure the wheels are suitably posi-
tioned.
= In the case of perforated brake discs, do
not put the measuring pin on one of the bores in the brake disc.
Cleaning and care
Information on washing the vehicle in a car wash
&WARNING Risk of accident due to
reduced braking eMect aser washing the
vehicle
The braking eMect is reduced aser washing
the vehicle.
Aser the vehicle has been washed, brake
carefully while paying attention to the
traPc conditions until the braking eMect
has been fully restored.*NOTE Damage from automatic braking
If one of the following functions is activated,
the 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 Damage due to unsuitable car washBefore driving into a car wash make sure
that the car wash is suitable for the vehi-
cle dimensions.Ensure there is suPcient ground clear-
ance between the underbody and the guide rails of the car wash.Ensure that the clearance width of the
car wash, in particular the width of the
guide rails, is suPcient.
To avoid damage to your vehicle when using a car
wash, ensure the following beforehand:
= Active Distance Assist DISTRONIC is deactiva-
ted.
= The HOLD function is switched oM.
= The 360° Camera or the rear view camera is
switched oM.
= The side windows and sliding sunroof are com-
pletely closed.
= The blower for the ventilation and heating is
switched oM.
= The windshield wiper switch is in position Z.
= The key is at a minimum distance of 10 s
(3 m) away from the vehicle. Otherwise, the
trunk lid could open unintentionally.
= For car washes with a conveyor system:
Maintenance and care271

-Neutral \\ is engaged.
- For vehicles with automatic transmission:
If you leave the vehicle while it is being washed, make sure the key is located in
the vehicle. Park position ] will other-
wise be engaged automatically.\bIf, aser the car wash, you remove the wax
from the windshield and wiper rubbers, this
will prevent smearing and reduce wiper noise.
Automatic car wash mode
In car wash mode, the vehicle is prepared for driv-
ing into an automatic car wash. Car wash mode
can be activated at a speed of up to 12 mph
(20 km/h) (  page 272).
The following settings are adjusted when car wash
mode is activated:
= The outside mirrors will be folded in.
= To prevent the windshield washer system from
starting up automatically, the rain sensor willbe deactivated.
= The rear window wiper will be deactivated.
= The air conditioning system will be set to air-
recirculation mode.
= Parking Assist PARKTRONIC will be deactiva-
ted.
= Vehicles with 360° camera: The front image
will be activated aser approximately eight sec-
onds.
If one of the settings cannot be selected, this will
be shown by the symbol next to the respec-
tive setting.
Above a speed of 12 mph (20 km/h), car wash mode will be deactivated automatically.
The following settings will be reset when car wash
mode is deactivated:
= The outside mirrors will be folded out.
= The rain sensor will be activated.
= The rear window wiper will be activated.
= The air conditioning system will be set to fresh
air mode.
= Parking Assist PARKTRONIC will be reset to
the previously selected setting.
= Vehicles with 360° camera: The front image
will be deactivated at speeds above 11 mph
(18 km/h).Activating/deactivating automatic car wash mode
Requirements: = The vehicle is stationary.
= The engine is running.
Multimedia system: 4 © 5
Settings 5
Quick Access
Activating automatic car wash mode
Select Automatic Car Wash Mode .Select Start.
If one of the settings cannot be selected, this is
displayed by an behind the respective set-
ting.
\bFor an overview of the settings made when activating automatic car wash mode
(  page 271).
Deactivating automatic car wash mode
Select Stop.
The automatic car wash settings are reset.272Maintenance and care

\bThe automatic car wash mode is automatically
deactivated as soon as a speed of 12 mph
(20 km/h) is exceeded.
Information on using a power washer
&WARNING Risk of an accident when using
power washers with round-spray nozzles
The water jet can cause externally invisible
damage.
Components damaged in this way may unex-
pectedly fail.
Do not use a power washer with round- spray nozzles.Have damaged tires or chassis parts
replaced immediately.
To avoid damage to your vehicle, observe the fol- lowing when using a power washer:
= The key is at a minimum distance of 10 s
(3 m) away from the vehicle. Otherwise, the
trunk lid could open unintentionally.
= Maintain a distance of at least 11.8 in (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 27.6 in (70 cm) between the Nlm-covered parts of the vehicle
and the nozzle of the power washer. Move the power washer nozzle around while cleaning.The water temperature of the power washer
must not exceed 140°F (60°C).
= Observe the information on the correct dis-
tance in the equipment manufacturer\bs oper-
ating instructions.
= Do not direct the nozzle of the power washer
directly at sensitive parts, e.g. tires, gaps,
electrical components, batteries, illuminants or louvers.Washing the vehicle by hand*NOTE Engine damage due to water ingressTake care not to point the water jet
directly towards the air inlet grille below the hood.
Observe the relevant legal requirements (e.g. in
some countries, 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 sponge. When doing so, do not
expose the vehicle to direct sunlight.Carefully hose the vehicle oM with water and
dry using a chamois.\bObserve the notes on the care of car parts
(  page 275).
Notes on paintwork/matt Nnish paintwork care
To avoid damaging the paintwork and interfering
with the driving assistance systems, please
observe the following notes:
Maintenance and care273

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. Have Nlm attached to the bumper only at
a qualiNed specialist workshop.
= Remove dirt immediately, where possible.
Matt Nnish
= Use only care products approved for
Mercedes-Benz.
= Do not attach stickers, Nlms or similar materi-
als. Have Nlm attached to the bumper only at
a qualiNed specialist workshop.=
Do not polish the vehicle and alloy wheels.
= Use only car washes that correspond to the
latest engineering standards.
= Do not use any car wash program with a Nnal
hot wax treatment.
= Do not use paint cleaners, buPng or polishing
products or 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 159).
Notes on cleaning decorative Nlms
Observe the "Notes on paintwork/matte Nnish
paintwork care" (  page 273). They also apply to
matte 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.
= To 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 color of decorative Nlms
are impaired by:
- Sunlight
- Temperature (e.g. hot air blower)
- Weather conditions
- Stone chippings and dirt274Maintenance and care

-Chemical cleaning agents
- Oily products
= Do not use polish on matte decorative Nlm.
Polishing will have the eMect of shining the
Nlm-wrapped surface.
= Do not treat matte 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.
You can obtain more information on care and
cleaning agents 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.\bHave work or repairs to decorative Nlms car-
ried out at a qualiNed specialist workshop
(e.g. at an authorized Mercedes-Benz Center).Notes on care of car parts&WARNING Risk of entrapment if the wind-
shield wipers are switched on while the
windshield is being cleaned
If the windshield wipers are set in motion
while you are cleaning the windshield or wiper
blades, you can be trapped by the wiper arm.
Always switch oM the windshield wipers
and the vehicle before cleaning the wind-
shield or wiper blades.
To avoid damage to the vehicle, observe the notes
on cleaning and care 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 discs and
pads, drive the vehicle for a few minutes aser
cleaning before parking it. The brake discs and pads will warm up and dry out.
Windows*NOTE Damage to electronic components
due to excess Ouids
When cleaning the windows from the inside,
Ouids such 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 the 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.
Maintenance and care275

\bAser changing the wiper blades or treating
the vehicle with wax, clean the windshield
thoroughly with cleaning agents recommen- ded for Mercedes-Benz. Failure to observe the
application instructions may result in damage,
smear marks or glare spots.\bRemove external fogging or dirt on the wind-
shield in front of the multifunction camera.
Otherwise, driving systems and driving safety
systems may be impaired or unavailable
(  page 159).
Wiper blades
= Move the wiper arms into the replacement
position (  page 122).
= With the wiper arms folded out, clean the
wiper blades with a damp cloth.
\bMake sure that the wiper blades are coated.
The coating may leave residue on a cloth. Do
not rub the wiper blades excessively or clean them too osen.
Exterior lighting
= Clean the 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 159).
= When using a power washer, maintain a mini-
mum distance of 11.8 in (30 cm).
Reversing camera and 360° Camera = Open the camera cover with the multimedia
system (  page 198).
= Use clean water and a sos cloth to clean the
camera lens.
= Do not use a power washer.
Notes on care of the interior
&WARNING Risk of injury from plastic parts
breaking oM aser the use of solvent-based
care products
Care and cleaning products containing sol-
vents 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
containing solvents to clean the cockpit.&WARNING Risk of injury or fatal injuries
from bleached seat belts
Bleaching or dyeing seat belts can severely weaken 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- lowing notes on cleaning and care:
Seat belts = Clean with lukewarm soapy water.
= Do not use chemical cleaning agents.
= Do not dry by heating them to over 176°F
(80°C) or exposing them to direct sunlight.
Display
= Switch oM the display and let it cool down.
276Maintenance and care

=Clean the surface carefully with a microNber
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 microNber cloth.
= For heavy soiling: use a cleaning agent recom-
mended for Mercedes-Benz.
= Do not attach stickers, Nlms or similar materi-
als.
= Do not allow cosmetics, insect repellent or
sun cream to come into contact with the plas-
tic trim.
Real wood and trim elements
= Clean with a microNber 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.
Headliner
= 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 Damage caused by wrong cleanersDo not use solvent-based cleaning
agents such as tar remover or wheel
cleaner; neither should you use polishes
or waxes. Otherwise you may damage
the Nnish.
=
Clean with 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 microNber cloth.\bLeather is a natural product. It exhibits natural
surface properties such as diMerences in
structure, marks caused by growth and injury or subtle color diMerences. These surface
properties are characteristics of leather and not material defects. Leather is also subjectto a natural aging process during which the
surface properties change.
Genuine leather seat covers
= Vacuum up dirt such as crumbs or dust and
then clean the seat covers with a damp cotton
cloth and wipe down with a dry cloth. Regu-
larly clean the seat covers.
= For heavy soiling: use a leather care agent rec-
ommended for Mercedes-Benz asercare.
= Leather care: use a leather care agent that
has been recommended for Mercedes-Benz.
= Do not use a microNber cloth.
= Do not allow the leather to become too damp.
= Do not use oil-based cleaning and care prod-
ucts.
Maintenance and care277

\bLeather is a natural product. It exhibits natural
surface properties such as diMerences in
structure, marks caused by growth and injury or subtle color diMerences. These surface
properties are characteristics of leather and not material defects. Leather is also subjectto a natural aging process during which the
surface properties change.
Waves or wrinkling in the seat cover may
occur due to the stress on the seat; this is
caused by the natural leather material.
Regular cleaning and care of the leather
reduces soiling, wear marks and aging dam-
age and thus signiNcantly extends its life
span. Clothing that can leave stains (e.g.
jeans) may discolor the leather.
DINAMICA seat covers
= Vacuum up dirt such as crumbs or dust and
then use a damp cloth to clean.
= Do not use a microNber cloth.
Imitation leather seat covers = Vacuum up dirt such as crumbs or dust and
then use a damp cotton cloth and a 1% soap
solution to clean the entire seat cover. Do not
spot clean.
= Use cleaning and care products recommen-
ded for Mercedes-Benz.
= Do not use a microNber cloth.
= Do not use oil-based cleaning and care prod-
ucts.
Fabric seat covers
= Vacuum up dirt such as crumbs or dust and
then use a damp microNber cloth and a 1%
soap solution to clean the entire seat cover. Do not spot clean.
= Use cleaning and care products recommen-
ded for Mercedes-Benz.
= Do not use oil-based cleaning and care prod-
ucts.278Maintenance and care