MERCEDES-BENZ CLA 2023 Owners Manual

shop. The new wheel must have the cor-
rect dimensions.\bThe emergency spare wheel is secured in the emergency spare wheel bag in the trunk.
Observe the following notes on installing an emer-
gency spare wheel:
= The maximum permissible speed with an
emergency spare wheel installed is 50 mph
(80 km/h).
= Do not install the emergency spare wheel with
snow chains.
= Replace the emergency spare wheel aser six
years at the latest, regardless of wear.
= Use the wheel bolts that are included with the
emergency spare wheel.
= Check the tire pressure of the emergency
spare wheel installed. Correct the pressure as
necessary.
\bThe speciNed tire pressure is stated on the
label of the emergency spare wheel.\bVehicles with a tire pressure loss warning sys- tem: if an emergency spare wheel is installed,the tire pressure loss warning system cannot
function reliably. Only restart the system
again when the emergency spare wheel has been replaced with a new wheel.
Vehicles with a tire pressure monitoring sys-
tem: if an emergency spare wheel is installed,
the tire pressure monitoring system cannot
function reliably. For a few minutes aser an
emergency spare wheel is installed, the sys- tem may still display the tire pressure of the
removed wheel. Only restart the system again when the emergency spare wheel has been
replaced with a new wheel.
Be sure to also observe the following further rela-
ted subjects:
= Notes on tire pressure (  page 300)
= Tire and Loading Information placard
(  page 307)
= Tire pressure table (  page 302)
= Notes on installing tires (  page 318)
= Installing an emergency spare wheel
(  page 323)
*nOating the emergency spare wheel*NOTE Overheating due to the tire inOation
compressor running too longDo not run the tire inOation compressor
for longer than ten minutes without inter- ruption.
Requirements:
Comply with the manufacturer\bs safety notes on
the sticker of the emergency spare wheel and on the tire inOation compressor.
Remove the sticker with the label 50 mph
(80 km/h) from the tire inOation compressor
housing and aPx it to the instrument cluster
within the driver\bs Neld of vision.Remove the tire inOation compressor from the
storage well under the trunk Ooor
(  page 282).Wheels and tires329

Pull Nller hose 1 and plug 3 out of the tire
inOation compressor housing.Insert plug 7 of Nller hose 1 in the socket
on the tire inOation compressor and then turn
it until plug 7 engages.Unscrew the cap from the valve on the emer-
gency spare wheel.Screw union nut 2 of Nller hose 1 onto
valve.Make sure on and oM switch 4 of the tire
inOation compressor is set to 0.Insert plug 3 in a socket in your vehicle.
=
12 V socket (  page 111)
=
Observe the notes on sockets (  page 111).Press the start/stop button once to switch on
the power supply (  page 132).Press on and oM switch 4 on the tire inOation
compressor to I.
The tire inOation compressor is switched on.
The tire is inOated. The tire pressure is shown
on manometer 5.Pump the tire to the speciNed tire pressure.\bThe speciNed tire pressure is stated on the
label of the emergency spare wheel.When the speciNed tire pressure has been
reached, press on and oM switch 4 on the
tire inOation compressor to 0.
The tire inOation compressor is switched oM.Press the start/stop button to switch oM the
power supply.If the tire pressure is higher than the speciNed
pressure, press pressure release valve button
6 until the correct tire pressure has been
reached.Unscrew union nut 2 of Nller hose 1 from
the valve.Screw the valve cap of the emergency spare
wheel onto the valve again.Store Nller hose 1 and plug 3 in the lower
section of the tire inOation compressor hous-
ing.Store the tire inOation compressor in the vehi-
cle.330Wheels and tires

Notes on technical data*NOTE Mercedes-AMG vehiclesObserve the notes in the Supplement.
You could otherwise fail to recognize
dangers.
The data stated only applies to vehicles with standard equipment. You can obtain further infor-
mation from an authorized Mercedes-Benz Cen-
ter.
Vehicle electronics
Two-way radios

q Notes on installing two-way radios
&WARNING Risk of accident due to
improper work on two-way radios
If two-way radios are manipulated or retroNt-
ted incorrectly, the electromagnetic radiation
from the two-way radios can interfere with the vehicle electronics and jeopardize the operat-
ing safety of the vehicle.
You should have all work on electrical
and electronic components carried out
at a qualiNed specialist workshop.&WARNING Risk of accident due to
improper operation of two-way radios
If you use two-way radios in the vehicle
improperly, their electromagnetic radiation
can disrupt the vehicle\bs electronics. This is
the case in the following situations, in particu-
lar:
= The two-way radio is not connected to an
exterior antenna.
= The exterior antenna is installed incor-
rectly or is not a low-reOection antenna.
This could jeopardize the operating safety of
the vehicle.
Have the low-reOection exterior antenna
installed at a qualiNed specialist work-
shop.When operating two-way radios in the
vehicle, always connect them to the low-
reOection exterior antenna.*NOTE Invalidation of the operating permit
due to failure to comply with the instruc-
tions for installation and use
The operating permit may be invalidated if the instructions for installation and use of two-wayradios are not observed.
Only use approved frequency bands.Observe the maximum permissible out-put power in these frequency bands.Only use approved antenna positions.Technical data331

1Front roof area2Rear roof area3Rear fenders4Trunk lid
On vehicles with a panorama roof with power tilt/
sliding panel, installing an antenna to the front or rear roof area is not permitted.
On the rear fenders, it is recommended that you
install the antenna on the side of the vehicle clos- est to the center of the road.
Use Technical SpeciNcation ISO/TS 21609 (Road
Vehicles !

The following can be used in the vehicle without
restrictions:
= two-way radios with a maximum transmission
output of up to 100 mW
= RF transmitters with transmitter frequencies in
the 380 - 410 MHz frequency band and a
maximum transmission output of up to 2 W
(TETRA)
= mobile phones (2G/3G/4G)
There are no restrictions when positioning the
antenna on the outside of the vehicle for the fol-
lowing frequency bands:
= Terrestrial Trunked Radio (TETRA)
= 70!

Vehicle identiNcation plate (Canada only)1Maximum permissible gross vehicle weight2Maximum permissible front axle load3Maximum permissible rear axle load4Paint code5VIN (vehicle identiNcation number)
The maximum permissible gross vehicle weight is
made up of the vehicle weight, all vehicle occu-
pants, the fuel and the load. The maximum gross
axle weight rating is the maximum weight that can be carried on one axle (front or rear axle).
Do not exceed the maximum permissible gross
vehicle weight or the maximum gross axle weight
rating for the front or rear axle.
VIN, engine number and other signs1Engine number stamped into the crankcase2VIN (vehicle identiNcation number) stamped
into the crossmember3Plate with information about emissions test-
ing, including conNrmation of emissions
guidelines at the U.S. federal level as well as
for California4VIN as a label at the lower edge of the wind-
shield
Operating Ouids
Notes on operating Ouids
*NOTE Mercedes-AMG vehiclesObserve the notes in the Supplement.
You could otherwise fail to recognize
dangers.&WARNING Risk of injury due to harmful
operating Ouids
Operating Ouids can be toxic.
When using, storing and disposing of
operating Ouids, observe the imprints on
the respective original containers.334Technical data

Always keep operating Ouids in the
sealed original container.Always keep children away from operat-
ing Ouids.+ENVIRONMENTAL NOTE Pollution of the
environment due to irresponsible disposal
of operating Ouids
Incorrect disposal of operating Ouids can
cause considerable damage to the environ- ment.
Dispose of operating Ouids in an environ-
mentally responsible manner.
Operating Ouids include the following:
= Fuels
= Lubricants
= Coolant
= Brake Ouid
= Windshield washer Ouid
= Climate control system refrigerant
Only use products approved by Mercedes-Benz.
Damage caused by the use of products that have not been approved is not covered by the
Mercedes-Benz warranty or goodwill gestures.
The operating Ouids approved by Mercedes-Benz
can be identiNed by the following inscriptions on
the container:
= MB-Freigabe (e.g. MB-Freigabe 229.51)
= MB-Approval (e.g. MB-Approval 229.51)
Further information on approved operating Ouids:
= in the Mercedes-Benz SpeciNcations for Oper-
ating Fluids by entering the designation
- At https://operatingOuids.mercedes-
benz.com
= At a qualiNed specialist workshop&WARNING Risk of Nre or explosion from
fuel
Fuels are highly Oammable.
Fire, open Oames, smoking and creating
sparks must be avoided.Before and during refueling, switch oM
the vehicle and, if installed, the station- ary heater.&WARNING Risk of injury from fuels
Fuels are poisonous and hazardous to your
health.
Do not swallow fuel or let it come into
contact with skin, eyes or clothing.Do not inhale fuel vapor.Keep children away from fuel.Keep doors and windows closed during
the refueling process.
If you or other people come into contact with
fuel, observe the following:
Immediately rinse fuel oM your skin with
soap and water.If fuel comes into contact with your eyes, immediately rinse them thoroughly with
clean water. Seek medical attention
immediately.Technical data335

If you swallow fuel, seek medical atten-
tion immediately. Do not induce vomit-
ing.Change immediately out of clothing that has come into contact with fuel.Flexible-fuel vehicles can be refueled with the fol-lowing fuel types:
= premium-grade unleaded gasoline
= E85 fuel
= a mixture of E85 fuel and premium-grade
unleaded gasoline
Flexible-fuel vehicles can be identiNed by the
Ethanol up to E85 sticker on the inside of the fuel
Nller Oap.
Depending on the country, the fuels you can use in your vehicle may diMer from the information in
the Operator\bs Manual. The fuels that have been
approved for your vehicle can be found on the
instruction label on the inside of the fuel Nller Oap.Fuel

q Information on fuel quality for vehicles with gas-
oline engine
Observe the instructions about operating Ouids
(  page 334).
*NOTE Damage caused by the wrong fuel
Even small amounts of the wrong fuel could
result in damage to the fuel system, the
engine and the emission control system.
Only refuel with low-sulfur spark-ignition
engine fuel.
This fuel may contain up to 10% ethanol by vol- ume. Your vehicle is suitable for use with E10 fuel.
Never refuel with one of the following fuels: = diesel
= Gasoline with more than 10% ethanol by
volume, e.g. E15, E85, E100
= Gasoline with more than 3% methanol by
volume, e.g. M15, M30, M85, M100
= Gasoline with additives containing metal
If you have accidentally refueled with the
wrong fuel:Do not switch on the vehicle.Consult a qualiNed specialist workshop.
If the available fuel is not suPciently low in sulfur,
it may produce unpleasant odors.
Only refuel with fuel that has at least the octane number speciNed in the information label on the
fuel Nller Oap. Otherwise, engine output may be
reduced and fuel consumption increased.
For maximum engine output: Only refuel using
premium-grade unleaded gasoline with at least
91 AKI/95 RON.
If the recommended fuel is not available, you may also temporarily use regular unleaded gasoline
with an octane number of at least 87 AKI/
91 RON. This may reduce engine output and
increase fuel consumption.
Never refuel using gasoline with an even lower
RON.
336Technical data

*NOTE Premature engine wear through
unleaded regular gasoline
Impairment of the longevity and performance
of the engine.
If unleaded premium grade gasoline is unavail- able and you have to refuel using unleaded
regular gasoline:
Only Nll the fuel tank to half full with
unleaded regular gasoline and reNll as
soon as possible with unleaded premium
grade gasoline.Do not drive at the maximum design speed.Avoid sudden acceleration and engine
speeds over 3000 rpm.
Further information on fuel is available at the fol- lowing locations:
= At a gas station
= At a qualiNed specialist workshop
= USA only: On the https://www.mbusa.com

qInformation on additives in gasoline (vehicles
with gasoline engine)
Observe the notes on operating Ouids
(  page 334).*NOTE Damage from use of unsuitable
additives
Even small amounts of the wrong additive may
lead to malfunctions occurring.
Only add cleaning additives recommen-
ded by Mercedes-Benz to the fuel.
Mercedes-Benz recommends that you use brand-
name fuels with additives.
In some countries, the fuel available may not have
suPcient additives. Deposits could build up in the
fuel injection system as a result. In this case, in consultation with a qualiNed specialist workshop
(e.g. an authorized Mercedes-Benz Service Cen- ter), mix the fuel with the cleaning additive recom-
mended by Mercedes-Benz. Observe the notes and mixing ratios indicated on the tank.

q Tank content and fuel reserve
Total fuel tank capacityModelAll models13.5 gal (51.0 liters)
Fuel tank reserve
ModelAll models1.3 gal (5.0 liters)
Engine oil

q Notes on engine oil
Observe the notes on operating Ouids
(  page 334).
Technical data337

*NOTE Engine damage caused by an incor-
rect oil Nlter, incorrect oil or additivesDo not use engine oils or oil Nlters other
than those which meet the speciNcations
necessary for the prescribed service
intervals.Do not alter the engine oil or oil Nlter in
order to achieve longer change intervals than prescribed.Do not use additives.Have the engine oil changed aser the
prescribed intervals.Mercedes-Benz recommends having the oil
changed at a qualiNed specialist workshop.
Only use engine oils approved for your vehicle by
Mercedes-Benz.

q Engine oil quality and Nlling capacity
Engine oil speciNcationModelMB-Freigabe or MB-
ApprovalAll models229.51, 229.52,
229.61, 229.71,
229.72 1)1) Recommended for the lowest possible fuel consumption (lowest
SAE viscosity class in each case; observe possible restrictions of
the approved SAE viscosity classes)
To achieve the lowest possible fuel consumption, it is recommended to use the engine oil speciNca-
tions marked in the table with the lowest SAE vis-
cosity class. Observe any possible restrictions of the approved SAE viscosity classes.
Engine oil Nlling capacityModelCapacityAll models5.8 US qt (5.5 liters)
The speciNed Nlling capacity refers to an oil
change with the oil Nlter.
Notes on brake Ouid
Observe the notes on operating Ouids
(  page 334).
&WARNING Risk of an accident due to
vapor pockets forming in the brake system
The brake Ouid constantly absorbs moisture
from the air. This lowers the boiling point of
the brake Ouid. If the boiling point is too low,
vapor pockets may form in the brake system when the brakes are applied hard.
This causes the braking eMect to be impaired.
Have the brake Ouid renewed at the
speciNed intervals.338Technical data