MERCEDES-BENZ CLA 2023 Owners Manual

Emergency
Removing the safety vest
The safety vests are located in the stowage com-
partments in the driver\bs and front passenger
door.
Pull out the safety vest bag by the loop.Open the safety vest bag and pull out the
safety vest.\bThere are also safety vest compartments in
the rear door stowage compartments in which
safety vests can be stored.1Maximum number of washes2Maximum wash temperature3Do not bleach4Do not iron5Do not tumble dry6Do not dry clean7Class 2 safety vest
The requirements deNned by the legal standard
are only fulNlled if the safety vest is the correct
size and is fully closed.
Replace the safety vest in the following cases:
= The reOective strips are damaged or dirty
= The maximum permissible number of washes
is exceeded
= The Ouorescence has faded, e.g. due to con-
tinuous exposure to sunlight.
Dispose of the safety vest in an environmentally
responsible manner.
= To do so, contact your local waste disposal
company.
Warning triangle

q Removing the warning triangle
Push both sides of warning triangle holder 1
in the direction of the arrow and open it.Remove warning triangle 2.Breakdown assistance279

qSetting up the warning triangleFold side reOectors 1 upwards to form a tri-
angle and attach at the top using upper press- stud 2.Fold legs 3 down and out to the side.First-aid kit (sos sided) overview
First-aid kit 1 is located in the stowage net on
the les in the trunk.
Flat tire
Notes on Oat tires
&WARNING Risk of accident due to a Oat
tire
A Oat tire severely aMects the driving charac-
teristics as well as the steering and braking of
the vehicle.
Tires without run-Oat characteristics:
Do not drive with a Oat tire.Change the Oat tire immediately with an
emergency spare wheel or spare wheel.
Alternatively, consult a qualiNed special-
ist workshop.
Tires with run-Oat characteristics:
Observe the information and warning
notes on MOExtended tires (run-Oat
tires).280Breakdown assistance

In the event of a Oat tire, the following options are
available depending on your vehicle\bs equipment:
= Vehicles with MOExtended tires: it is possible
to continue the journey for a short period of
time. Make sure you observe the notes on MOExtended tires (run-Oat tires)
(  page 281).
= Vehicles with a TIREFIT kit: you can seal the
tire so that it is possible to continue the jour-
ney for a short period of time. To do this, use the TIREFIT kit (  page 282).
= Vehicles with Mercedes me connect: you can
make a call for breakdown assistance via the
overhead control panel in the case of a break-
down (  page 243).
= All vehicles: change the wheel (  page 323).\bThe emergency spare wheel is only available
in certain countries.Notes on MOExtended tires (run-Oat tires)&WARNING Risk of accident when driving in
limp-home mode
When driving in emergency mode the handling
characteristics are impaired.
Do not exceed the speciNed maximum
speed of the MOExtended tires.Avoid any abrupt steering and driving maneuvers as well as driving over obsta-
cles (curbs, pot holes, oM-road). This
applies, in particular, to a loaded vehicle.Stop driving in the emergency mode if
you notice:
= Banging noise
= Vehicle vibration
= Smoke which smells like rubber
= Continuous ESP n
intervention
= Cracks in the tire side walls
Aser driving in emergency mode, have
the rims checked by a qualiNed specialistworkshop with regard to their further
use.The defective tire must be replaced in
every case.
With MOExtended tires (run-Oat tires), you can
continue to drive your vehicle even if there is a
total loss of pressure in one or more tires. How-
ever, the tire aMected must not show any clearly
visible damage.
You can recognize MOExtended tires by the
MOExtended marking which appears on the side wall of the tire.
Vehicles with tire pressure loss warning system: MOExtended tires may only be used in conjunc-
tion with an activated tire pressure loss warning
system.
Vehicles with tire pressure monitoring system:
MOExtended tires may only be used in conjunc-
tion with an activated tire pressure monitoring system.
If a pressure loss warning message appears in the driver\bs display, proceed as follows:
= Check the tire for damage.
Breakdown assistance281

=If driving on, observe the following notes.
Driving distance possible in emergency mode
aser the pressure loss warning:Load conditionDriving distance possi-
ble in emergency modePartially laden50 miles (80 km)Fully laden19 miles (30 km)
The driving distance possible in emergency mode
may vary depending on the driving style. Observe the maximum permissible speed of 50 mph
(80 km/h).
If a tire has gone Oat and cannot be replaced with
an MOExtended tire, you can use a standard tire
as a temporary measure.
TIREFIT kit storage location
The TIREFIT kit is located under the trunk Ooor.
1Tire sealant bottle2Tire inOation compressor
Depending on the vehicle version, the TIREFIT kit
may also be located in other positions under the trunk Ooor.
Using the TIREFIT kit
Requirements
= Tire sealant bottle and tire inOator compressor
are ready for use (  page 282).
= TIREFIT sticker is present.
= Gloves are present.
You can use TIREFIT tire sealant to seal perfora-
tion damage of up to 0.16 in (4 mm), particularly
those in the tire tread. You can use TIREFIT in out-
side temperatures down to -4 °F (-20 °C).&WARNING Risk of accident when using
tire sealant
The tire sealant may be unable to seal the tire
properly, especially in the following cases:
= There are large cuts or punctures in the
tire (larger than damage previously men-
tioned)
= The wheel rims have been damaged
= Aser journeys with very low tire pressure
or with Oat tires
Do not continue driving.Consult a qualiNed specialist workshop.&WARNING Risk of injury and poisoning
from tire sealant
The tire sealant is harmful and causes irrita-
tion. Do not allow it to come into contact with
282Breakdown assistance

the skin, eyes or clothing, and do not swallow
it. Do not inhale tire sealant fumes. Keep the
tire sealant away from children.
If you come into contact with the tire sealant,
observe the following:Rinse oM the tire sealant from your skin
immediately using water.If tire sealant gets into your eyes, thor- oughly rinse out the eyes using clean
water.If tire sealant has been swallowed, imme-
diately rinse out the mouth thoroughly
and drink plenty of water. Do not induce
vomiting and seek medical attention
immediately.Change out of any clothes contaminated
with tire sealant immediately.If allergic reactions occur, seek medical
attention immediately.*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.
Comply with the manufacturer\bs safety notes on
the sticker on the tire inOation compressor.
Have the tire sealant bottle replaced in a qualiNed
specialist workshop every Nve years.
Do not remove any foreign objects that have
entered the tire.APx part 1 of the TIREFIT sticker to the
instrument cluster within the driver\bs Neld of
vision.APx part 2 of the TIREFIT sticker near the
valve on the wheel with the defective tire.Pull plug 4 with the cable and hose 5 out
of the tire inOation compressor housing.Breakdown assistance283

Push the plug of hose 5 into Oange 6 of tire
sealant bottle 1 until the plug engages.Place tire sealant bottle 1 head downwards
into recess 2 of the tire inOation compressor.Remove the valve cap from valve 7 on the
faulty tire.Screw Nlling hose 8 onto valve 7.Insert plug 4 into a 12!

Unscrew the Nlling hose from the valve of the
defective tire.&WARNING Risk of accident from driving
with sealed tires
A tire temporarily sealed with tire sealant
impairs the handling characteristics and is not suitable for higher speeds.
Adapt your driving style accordingly and
drive carefully.Do not exceed the maximum speed limit with a tire that has been repaired using
tire sealant.Observe the maximum permissible speed of
50 mph (80 km/h) for a tire sealed with tire
sealant.*NOTE Staining caused by leaking tire seal-
ant
Aser use, excess tire sealant may leak out
from the Nlling hose.
Therefore, place the Nlling hose in the
plastic bag that contained the TIREFIT
kit.+ENVIRONMENTAL NOTE Environmental
pollution caused by environmentally irre-
sponsible disposal
Tire sealant contains pollutants.
Have the tire sealant bottle disposed of
professionally, e.g. at an authorized
Mercedes-Benz Center.Stow the tire sealant bottle and the tire inOa-
tion compressor.Pull away immediately.Stop driving aser approximately ten minutes
and check the tire pressure using the tire
inOation compressor.
The tire pressure must now be at least
130 kPa (1.3 bar/19 psi).&WARNING Risk of accident due to the
speciNed tire pressure not being attained
If the speciNed tire pressure is not reached,
the tire is too badly damaged. The tire sealant
cannot repair the tire in this instance.
The braking and driving characteristics may begreatly impaired.
Do not continue driving.Consult a qualiNed specialist workshop.
In cases such as the one mentioned above, con-
tact an authorized Mercedes-Benz Center. Or call1-800-FOR-MERCedes (in the USA) or
1-800-387-0100 (in Canada).
To increase the tire pressure: switch on the
tire inOation compressor.Breakdown assistance285

To reduce the tire pressure: press pressure
release button 1 next to manometer 2.When the tire pressure is correct, unscrew the
Nlling hose from the valve of the sealed tire.Screw the valve cap onto the valve of the
sealed tire.Pull the tire sealant bottle out of the tire inOa-
tion compressor.
The Nlling hose stays on the tire sealant bottle.Drive to the nearest qualiNed specialist work-
shop and have the tire, tire sealant bottle and
Nlling hose replaced there.Battery (vehicle)
Notes on the 12 V battery
&WARNING Risk of an accident due to work
carried out incorrectly on the battery
Work carried out incorrectly on the battery
can, for example, lead to a short circuit. This can restrict functions relevant for safety sys-
tems and impair the operating safety of your
vehicle.
You could lose control of the vehicle in the fol-
lowing situations in particular:
= When braking
= In the event of abrupt steering maneuvers
and/or when the vehicle\bs speed is not
adapted to the road conditions
In the event of a short circuit or a similar incident, contact a qualiNed specialist
workshop immediately.Do not drive on.Always have work on the battery carried
out at a qualiNed specialist workshop.=
Further information on ABS (  page 160)
= Further information on ESP n
( page 161)
For safety reasons, Mercedes-Benz recommends that you use only batteries that have been
approved for your vehicle by Mercedes-Benz.
All vehicles except vehicles with a lithium-ion bat- tery&WARNING Risk of explosion due to elec-
trostatic charge
Electrostatic charge can ignite the highly
explosive gas mixture in the battery.
To discharge any electrostatic charge
that may have built up, touch the metal
vehicle body before handling the battery.
The highly Oammable gas mixture is created while
the battery is charging and during starting assis-
tance.
&WARNING Danger of chemical burns from
the battery acid
Battery acid is caustic.
286Breakdown assistance

Avoid contact with the skin, eyes or
clothing.Do not lean over the battery.Do not inhale battery gases.Keep children away from the battery.Immediately rinse battery acid oM thor-
oughly with plenty of clean water and
seek medical attention immediately.
All vehicles
+ENVIRONMENTAL NOTE Environmental
damage due to improper disposal of bat- teries
Batteries contain pollutants. It is illegal
to dispose of them with the household rub-
bish.

Dispose of batteries in an
environmentally responsible manner.
Take discharged batteries to a qualiNed
specialist workshop or to a collection
point for used batteries.
If you have to disconnect the 12 V battery, con- tact a qualiNed specialist workshop.
Comply with safety notes and take protective
measures when handling batteries.
Risk of explosion if the 12 V battery is
used improperly.Fire, naked Oames and smoking are pro-
hibited when you are handling the battery. Avoid creating sparks.Electrolyte or battery acid is corrosive.
Avoid contact with the skin, eyes or cloth-
ing. Wear suitable protective clothing, in
particular gloves, an apron and a face
mask. Immediately rinse electrolyte or
acid splashes oM with clean water. Consult
a doctor immediately.Do not place heavy objects on the surface of the battery or use the battery to sup-port a person in any way.Wear safety glasses.Keep children away.Observe this Operator\bs Manual.
Observe the following if you do not intend to use
the vehicle over an extended period of time:
= Non-plug-in hybrid: switch to standby mode
(  page 158).
= Alternatively: connect the battery to a battery
charger approved by Mercedes-Benz or con-
sult a qualiNed specialist workshop to discon-
nect the battery.
Notes on starting assistance and charging the 12
V battery
All vehicles
When charging the battery and during starting assistance, always use the jump-start connection
point in the engine compartment.
Breakdown assistance287

*NOTE Damage to the battery due to over-
voltage
When charging using a battery charger without
a maximum charging voltage, the battery or the on-board electronics may be damaged.
Only use battery chargers with a maxi-
mum charging voltage of 14.8 V.&WARNING Risk of explosion due to the
ignition of hydrogen gas
If there is a short circuit or sparks are created,
there is a danger of hydrogen gas igniting
when you charge the battery.
Make sure that the POSITIVE terminal of
a connected battery does not come into
contact with vehicle parts.Never place metal objects or tools on a
battery.When connecting and disconnecting the battery, always observe the sequence of
battery terminals described.During starting assistance, always take
care to connect only battery terminals of
identical polarity.During starting assistance, observe the sequence described for connecting and
disconnecting the jumper cables.Do not connect or disconnect the bat-
tery terminals with the engine running.&WARNING Risk of explosion due to a mix-
ture of explosive gases
A mixture of explosive gases can escape from
the battery during charging and jump starting.
Fire, open Oames, smoking and creating
sparks must be avoided.Make sure that there is suPcient ventila-
tion.Do not stand over the battery.&WARNING Risk of explosion from a frozen
battery
A discharged battery may freeze at tempera-
tures slightly above or below freezing point.
During starting assistance or battery charging,
battery gas can be released.
Always allow a battery to thaw before
charging it or performing starting assis-
tance.
If the indicator/warning lamps on the instrument cluster do not light up at low temperatures, it is
very likely that the discharged battery has frozen.
In this case, you may neither jump-start the vehi-
cle nor charge the battery.
The service life of a battery that has been thawedmay be dramatically shortened. The starting char-
acteristics may be impaired, especially at low
temperatures.
It is recommended that you have a thawed battery checked at a qualiNed specialist workshop.
288Breakdown assistance