2023 MERCEDES-BENZ CLA Owners Manual

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

Activating/deactivating the acoustic locking veriN-
cation signal
Multimedia system:
4 © 5
Settings 5
Vehicle
Activate or deactivate Acoustic Lock.
Activating/deactivating the panic alarm
Requirements
= The vehicle is switched oM.
To activate: press button 1 for approximately
one second.
A visual and audible alarm is triggered.To deactivate: brieOy press button 1 again.
or
Press the start/stop button.
A key belonging to the vehicle must be detec-
ted in the vehicle.
Changing the unlocking settings
Possible unlocking functions of the SmartKey:
= Central unlocking
= Unlocking the driver\bs door and fuel Nller Oap
To switch between settings: press the Ü
and ß buttons simultaneously for approx-
imately six seconds until the indicator lamp
Oashes twice.
Options when the unlocking function for the driv-
er\bs door and fuel Nller Oap has been selected:
= To unlock the vehicle centrally: press the
Ü button twice.
= Vehicles with KEYLESS-GO: if you touch the
inner surface of the door handle on the driv- er\bs door, only the driver\bs door and the fuel
Nller Oap will be unlocked.
Deactivating the function of the key
Vehicles with KEYLESS-GO: if you deactivate the
function of the key, the KEYLESS-GO functions are
also deactivated. Access or drive authorization by
KEYLESS-GO is then no longer possible with that particular key. Activate the function of the key so that all its functions will again be available.
You can also deactivate the function of the key to reduce the energy consumption of the key if youdo not use the vehicle or a key for an extended
period of time.
Press and hold the ß button on the key.With the key button ß pressed, immedi-
ately press key button Ü twice in quick
succession.
The indicator light of the key lights up once
brieOy and once for a long time.\bYou have the following options to reactivate
the key:
= Press any button on the key.
= Start the vehicle with the key in the center
console stowage space (  page 133).Opening and closing69

Removing/inserting the emergency key
Removing the emergency key
Press release button 1.
Emergency key 2 will be pushed out slightly.Pull out emergency key 2 until it engages in
the intermediate position.Press release button 1 again and fully
remove emergency key 2.
Inserting the emergency key
Press release button 1.Insert emergency key 2 to the intermediate
position or fully until it engages.\bYou can use the intermediate position of
emergency key 2 to attach the SmartKey to
a key ring.
Replacing the SmartKey battery
&DANGER Risk of fatal injury due to swal-
lowing batteries
Batteries contain toxic and corrosive substan-
ces. If batteries are swallowed or otherwise
enter the body, severe internal burns can
occur within two hours.
There is a risk of fatal injury!
Keep the batteries out of the reach of
children.If the lid and/or the battery compart-
ment do not close securely, stop using
the key and keep it away from children.If batteries are swallowed or otherwise
enter the body, seek immediate medical
attention.+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.
Requirements
= You require a CR 2032 3 V cell battery.
Mercedes-Benz recommends that you have the battery replaced at a qualiNed specialist work-
shop.
Remove the emergency key element
(  page 70).70Opening and closing