MERCEDES-BENZ CLA 2023 Repair Manual

&WARNING Risk of injury or death caused
by incorrect positioning of the child
restraint system
If you secure a child in a forward-facing child
restraint system on the front passenger seat
and you position the front passenger seat too
close to the cockpit, in the event of an acci-
dent, the child could:
= Come into contact with the vehicle interior
if the PASSENGER AIR BAG OFF indicator
lamp is lit, for example.
= Be struck by the air bag if the PASSENGER
AIR BAG OFF indicator lamp is oM.
Always move the front-passenger seat as
far back as possible. Always make sure
that the shoulder belt strap is correctly
routed from the seat belt outlet of the
vehicle to the shoulder belt guide on the
child restraint system. The shoulder belt
strap must be routed forwards and
downwards from the seat belt outlet. If
necessary, adjust the front-passenger
seat accordingly.Always comply with the child restraint
system manufacturer\bs installation
instructions.
Be sure to also observe the following further rela-
ted subjects:
= Function of the automatic front passenger air
bag shutoM ( page 41)
Suitable child restraint systems for the transport
of children
Information on the advantage of a rearward-facing
child restraint system
Transport a baby in a suitable rearward-facing
child restraint system only. It is also preferable to
transport a small child in a suitable rearward-
facing child restraint system. In this case, the child sits in the opposite direction to the directionof travel and faces backwards.
Babies and small children have comparatively
weak neck muscles in relation to the size and
weight of their head. The risk of injury to the cer-
vical spine during an accident can be reduced in a
rearward-facing child restraint system.
Securing the child restraint system
Adjusting the seat correctly
When installing a child restraint system on the les
or right rear seat, always observe the following:
Make sure that the child\bs feet do not touch the front seat. If necessary, move the front seat slightly forwards.
If the head restraint of the child restraint system
cannot be fully extended when it is installed in the
vehicle, this will result in restrictions on the maxi- mum size setting for certain child restraint sys-tems. Observe the child restraint system manu-facturer\bs installation instructions.
\bContact with the roof when the head restraintis fully extended and locked in place will not
result in any restrictions on use.Safely transporting children in the vehicle59

® When installing an ISOFIX child restraint
system, also observe the following:When using a rearward-facing child restraint
system on a rear seat: adjust the front seat so
that it does not touch the child restraint sys-
tem.When using a forward-facing child restraint system with integrated child seat belt: adjust
the head restraint of the respective seat so
that it does not push the child restraint system
forwards. If necessary, the respective head
restraint can be removed. In addition, the
backrest of the child restraint system must lie as Oat as possible against the backrest of the
vehicle seat. Aser the child restraint system
has been removed, replace the vehicle head
restraint immediately and adjust correctly.The child restraint system must not be put
under strain between the roof and the seat cushion and/or be installed facing the wrong
direction. Where possible, adjust the seat cushion inclination accordingly.Adjust the vehicle head restraints so that thechild restraint system is not put under strain by the head restraint.
v When installing a belt-secured child
restraint system, also observe the following:
When using a rearward-facing child restraint
system on a rear seat: adjust the front seat so
that it does not touch the child restraint sys-
tem.Also secure Top Tether if available
(  page 63)When using a forward-facing child restraint
system with integrated child seat belt: adjust
the head restraint of the respective seat so
that it does not push the child restraint system
forwards. If necessary, the respective head
restraint can be removed. In addition, the
backrest of the child restraint system must lie as Oat as possible against the backrest of the
vehicle seat. Aser the child restraint system
has been removed, replace the vehicle head
restraint immediately and adjust correctly.The backrest of the forward-facing child restraint system must, as far as possible, be
resting on the seat backrest of the rear seat.The child restraint system must not be put
under strain between the roof and the seat cushion and/or be installed facing the wrong
direction. Where possible, adjust the seat cushion inclination accordingly.Adjust the vehicle head restraints so that thechild restraint system is not put under strain by the head restraint.Make sure that the child\bs feet do not touchthe front seat. If necessary, move the front seat slightly forwards.
v Depending on the vehicle equipment,
always observe the following when installing a
belt-secured child restraint system on the front passenger seat:
Observe the notes on rearward-facing andforward-facing child restraint systems on the front passenger seat (  page 57).When using a forward-facing child restraint
system integrated child seat belt: remove the60Safely transporting children in the vehicle

head restraint from the respective seat, if pos-sible. Aser the child restraint system has been
removed, immediately replace the head restraint and adjust correctly.The backrest of the forward-facing childrestraint system must, as far as possible, be
resting on the seat backrest of the front passenger seat.The child restraint system must not be put
under strain between the roof and the seat cushion and/or be installed facing the wrong
direction.Adjust the vehicle head restraints so that the child restraint system is not put under strain by the head restraint.Never place objects (e.g. cushions) under or
behind the child restraint system.Set the front passenger seat as far back as possible and move the seat into the highest
possible position. Always make sure that the shoulder belt strap is correctly routed from
the seat belt outlet of the vehicle to the shoul- der belt guide on the child restraint system. The shoulder belt strap must be routed for-wards from the seat belt outlet and, where
possible, downwards to the child restraint sys-
tem.Fully retract the seat cushion length adjust- ment.Adjust the seat cushion inclination so that thefront edge of the seat cushion is in the highest
position and the rear edge of the seat cushion is in the lowest position.Set the seat backrest to the most verticalposition possible.
Activating or deactivating the special seat belt retractor of the seat belt
&WARNING Risk of injury or death if a seat
belt is unfastened while the vehicle is in
motion
If the seat belt is released while the vehicle is
in motion, the special seat belt retractor is
deactivated and the child restraint system is no longer correctly secured. The seat belt is
drawn in slightly by the inertia reel and cannot
be immediately closed again.
Stop the vehicle immediately in accord-
ance with the traPc conditions.Activate the special seat belt retractor
again and correctly secure the child
restraint system.
When enabled, the special seat belt retractor
ensures that the seat belts of the front passenger seat and rear seats do not slacken once the childrestraint system is secured.
The seat belts on the following seats are equipped
with a special seat belt retractor:
= Front passenger seat
= Rear seats
Installing a child restraint system
When installing a child restraint system, always observe the manufacturer\bs installation
and operating instructions as well as the infor-
mation in this Operator\bs Manual.Pull the seat belt smoothly from the seat belt outlet.Engage the seat belt tongue in the seat beltbuckle.Safely transporting children in the vehicle61

Activating the special seat belt retractorPull the seat belt out fully and let the inertia
reel retract it again.
When the special seat belt retractor is activa-
ted, you will hear a ratcheting sound.Push the child restraint system down until the seat belt sits tightly.
Deactivating the special seat belt retractor
Press the release button of the seat beltbuckle.Hold the seat belt tongue and guide back to
the seat belt outlet.
Installing an ISOFIX child restraint system
&WARNING Risk of accident if the rear
bench seat, rear seat and seat backrest
are not engaged
The rear bench seat, rear seat and seat back-
rest may fold forwards, even when you are
driving.
= As a result, the vehicle occupant will be
pushed into the seat belt with increased
force. The seat belt will not be able to pro-
tect as intended and could cause addi-
tional injury.
= Objects or loads in the trunk or cargo
compartment will not be restrained by the
seat backrest.Make sure that the rear bench seat, the rear seat and the seat backrest are engaged before every trip.If the les and right seat backrests are not
engaged and locked in place, this will be shown
on the instrument display.
If the center seat backrest is not engaged and
locked in place, the red lock veriNcation indicator
will be visible.&WARNING Risk of injury or death if the
permissible gross mass of the child and
child restraint system together is excee-
ded.
Too much load may be placed on the LATCH- type (ISOFIX) or iSize child restraint systemsand the child may not be restrained correctly
in the event of an accident, for example.
If the child is secured in a LATCH-type
(ISOFIX) child restraint system with inte-
grated seat belt, the total mass of the
child and child restraint system must not
exceed 73 lb (33 kg).Always comply with the information about the
mass of the child:
= in the manufacturer\bs installation and operat-
ing instructions for the child restraint system used
= on a label on the child restraint system, if
present62Safely transporting children in the vehicle

Regularly check that the permissible gross mass
of the child and child restraint system is still com- plied with.
When installing a child restraint system, observe the following:sAlways observe the correct use of the seats
and consider their suitability for attaching a child restraint system.
ISOFIX mounting brackets1ISOFIX mounting bracketBefore every journey, make sure that the ISO- FIX child restraint system is correctly engaged
in both mounting brackets in the vehicle.*NOTE Damage to the seat belt for the cen-
ter seat during installation of the child
restraint systemMake sure that the seat belt is not trap-
ped.Attach the ISOFIX child restraint system to both mounting brackets in the vehicle.
Fastening a Top Tether
&WARNING Risk of injury or death if the
rear seat backrests are not locked aser
Top Tether belts are installed
The rear seat backrests may fold forwards
when you are driving.
As a result, child restraint systems will no lon-
ger be able to perform their intended protec-
tive function. This may also cause additional injuries.
Always lock rear seat backrests aser
installing Top Tether belts.Safely transporting children in the vehicle63

Observe the lock veriNcation indicator.If the les and right seat backrests are not
engaged and locked in place, this will be shown
on the instrument display.
If the center seat backrest is not engaged and
locked in place, the red lock veriNcation indicator
will be visible.¯If the child restraint system is equipped
with a Top Tether belt:
The risk of injury may be reduced by Top
Tether. The Top Tether belt enables an
additional connection between the child
restraint system attached with LATCH-type
(ISOFIX) (les and right rear seats) or the
seat belt (all rear seats) and the vehicle.Fold up cover 2 of Top Tether anchorage 3.
Vehicles with adjustable head restraints:
If necessary, slide head restraint 1 upwards
(  page 97).Guide Top Tether belt 4 under head restraint
1 between the two head restraint bars.
Vehicles without adjustable head restraints:
Top Tether belt with one seat belt strap: guide
Top Tether belt 4 past head restraint 1 on
the side nearest the door.
or
Top Tether belt with two seat belt straps: guide
one Top Tether belt 4 past head restraint 1
on the right and les sides respectively.
All vehicles:
Install the LATCH-type (ISOFIX) or belt-
secured child restraint system with Top Tether. In doing so, comply with the child restraint
system manufacturer\bs installation instruc-
tions.64Safely transporting children in the vehicle

Hook Top Tether hook 5 of Top Tether belt
4 into Top Tether anchorage 3 without
twisting.Tension Top Tether belt 4. In doing so, com-
ply with the child restraint system manufactur-
er\bs installation instructions.Fold down cover 2 of Top Tether anchorage
3 .
Vehicles with adjustable head restraints:
If necessary, slide head restraint 1 down-
wards (  page 97). Make sure that you do
not interfere with the correct routing of Top
Tether belt 4.Securing the child restraint system with the seat
belt&WARNING Risk of accident if the rear
bench seat, rear seat and seat backrest
are not engaged
The rear bench seat, rear seat and seat back-
rest may fold forwards, even when you are
driving.
= As a result, the vehicle occupant will be
pushed into the seat belt with increased
force. The seat belt will not be able to pro-
tect as intended and could cause addi-
tional injury.
= Objects or loads in the trunk or cargo
compartment will not be restrained by the
seat backrest.
Make sure that the rear bench seat, the rear seat and the seat backrest are engaged before every trip.If the les and right seat backrests are not
engaged and locked in place, this will be shown
on the instrument display.If the center seat backrest is not engaged and
locked in place, the red lock veriNcation indicator
will be visible.
The seat belts on the following seats are equipped
with a child seat safety feature:
= Front passenger seat
= Rear seats
When enabled, the child seat safety feature
ensures that the seat belts of the front passenger seat and rear seats do not slacken once the childrestraint system is secured.For a child restraint system in the "Universal" or "Semi-Universal" category, make sure that the system has been approved for the vehicle
seat.Install the child restraint system. The entire base of the child restraint system must always rest on the sitting surface of theseat.Always make sure that the shoulder belt strapis correctly routed from the seat belt outlet ofSafely transporting children in the vehicle65

the vehicle to the shoulder belt guide on the
child restraint system.
The shoulder belt strap must be routed for-
wards from the seat belt outlet and, where
possible, downwards to the child restraint sys-
tem.When installing on the rear seat: also secure
Top Tether if present.When installing on the front passenger seat: if
necessary, adjust the seat belt outlet and the front passenger seat accordingly.
Child-proof locks
Activating or deactivating the child safety lock for
the rear doors
&WARNING Risk of accident and injury due
to children les unattended in the vehicle
If you leave children unattended in the vehicle,
they could, in particular:
= open doors, thereby endangering other
persons or road users.
= get out and be struck by oncoming traPc.
= operate vehicle equipment and become
trapped, for example.
In addition, the children could also set the
vehicle in motion by, for example:
= releasing the parking brake.
= changing the gearbox position.
= starting the vehicle.Never leave children unattended in the
vehicle.When leaving the vehicle, always take the key with you and lock the vehicle.Keep the key out of reach of children.&WARNING Risk of fatal injury due to expo-
sure to extreme heat or cold in the vehicle
If persons, particularly children, are subjected
to prolonged exposure to intense heat or cold,
there is a risk of severe injury or even death.
Never leave persons, particularly chil-
dren, unattended in the vehicle.&WARNING Risk of accident and injury due
to children les unattended in the vehicle
If children are traveling in the vehicle, they
could, in particular:
= Open doors, thereby endangering other
persons or road users.
= Get out and be struck by oncoming traPc.
= Operate vehicle equipment and become
trapped, for example.
Always activate the installed child safety
locks if children are traveling in the vehi-
cle.Never leave children unattended in the vehicle.When leaving the vehicle, always take the SmartKey with you and lock the vehicle.There are child safety locks for the rear doors and
the rear side windows.
The child safety lock on the rear doors secures
each door separately. The doors can no longer be opened from the inside.
66Safely transporting children in the vehicle

Press the lever in direction 1 (activate) or 2
(deactivate).Make sure that the child safety locks are work-
ing properly.Activating and deactivating the child safety lock
for the rear side windowsTo activate/deactivate: press button 2.
The rear side window can be opened or closed
in the following cases:
= indicator lamp 1 is lit: via the switch on
the driver\bs door= indicator lamp 1 is oM: via the switch on
the corresponding rear door or driver\bs doorSafely transporting children in the vehicle67

SmartKey
Overview of SmartKey functions
&WARNING Risk of accident and injury due
to children les unattended in the vehicle
If you leave children unattended in the vehicle,
they could, in particular:
= open doors, thereby endangering other
persons or road users.
= get out and be struck by oncoming traPc.
= operate vehicle equipment and become
trapped, for example.
In addition, the children could also set the
vehicle in motion by, for example:
= releasing the parking brake.
= changing the gearbox position.
= starting the vehicle.
Never leave children unattended in the
vehicle.When leaving the vehicle, always take the key with you and lock the vehicle.Keep the key out of reach of children.*NOTE Damage to the SmartKey caused by
magnetic NeldsKeep the SmartKey away from strong
magnetic Nelds.Vehicle key with panic alarm1Locks2Indicator lamp3Unlocks4Opens the trunk lid5Panic alarm\bIf indicator lamp 2 does not light up when
the Ü or ß button is pressed, the bat-
tery is weak or possibly discharged. Replace
the battery as soon as possible.
Replace the SmartKey battery (  page 70).
The SmartKey locks and unlocks the following components:
= Doors
= Fuel Nller Oap
= Trunk lid
If the vehicle is not opened within approximately 40 seconds aser unlocking, it locks again. Anti-
thes protection is armed again.
Do not keep the SmartKey together with elec- tronic devices or metal objects. This can aMect
the SmartKey\bs functionality.
68Opening and closing