MERCEDES-BENZ C-CLASS ESTATE 2021 Repair Manual

qFitting an ISOFIX or i!äSize child restraint system
on the rear seat&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 while the vehicle
is in motion.
= As a result, the vehicle occupant will be
pressed 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 boot or load com-
partment cannot be restrained by the seat backrest.
Make sure that the rear bench seat, therear seat and the seat backrest are engaged before every trip.If the rear 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 ISOFIX
or i!äSize child restraint systems and the child may not be restrained correctly in the event ofan accident, for example.
If the child and the child restraint systemtogether weigh more than 33 kg, only
use an ISOFIX or i!äSize child restraint system with which the child is secured
with the vehicle seat belt.Also secure the child restraint system
with the Top Tether belt, if available.Always comply with the information about the
mass of the child restraint system:
= in the manufacturer's installation and operat-
ing instructions for the child restraint system used
= on a label on the child restraint system, if
presentRegularly check that the permissible gross mass
of the child and child restraint system is still com- plied with.
When Ntting a child restraint system, observe the
following:0073Always observe the correct use of the seats and consider their suitability for attaching achild restraint system.
ISOFIX child seat securing system
(  page 57)
or
i!äSize child seat securing system
(  page 58)0073Always comply with the manufacturer's
installation and operating instructions for the
child restraint system used.0073Make sure that the child's feet do not touch the front seat. If necessary, move the front
seat slightly forwards.
® When Ntting an ISOFIX child restraint sys-
tem, also observe the following:
0073When using a baby car seat in weight group
0/0+ and a rearward-facing child restraint Occupant safety59

system in weight group 1 on a rear seat: adjust the front seat so that the seat does
not touch the child restraint system.0073When using a forward-facing child restraint
system in weight group 1: remove the head
restraint from the respective seat, if possible. In addition, the backrest of the child restraintsystem must lie as Oat as possible against
the backrest of the vehicle seat.
Aser the child restraint system has been
removed, replace the head restraints again immediately and adjust them correctly.0073If the head restraint of the child seat cannot
be fully extended when it is installed in the vehicle, this will result in restrictions on themaximum size setting for child restraint sys- tems in weight category II or III.
Contact with the roof when the head restraint is fully extended and locked in place
will not result in any restrictions on use.0073The child restraint system must not be put under strain between the roof and the seat
cushion and/or be Ntted facing the wrongdirection. Where possible, adjust the seat
cushion inclination accordingly.0073The child restraint system must not be put under strain by the head restraint. Adjust the head restraints as appropriate.
° When Ntting an i!äSize child restraint system,
also observe the following:
0073When using a rearward-facing child restraint
system: adjust the front seat so that it does
not touch the child restraint system.0073When using a forward-facing child restraint
system: remove the head restraint from the
respective seat, if possible. 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 head restraints again immediately and adjust them correctly.1ISOFIX mounting bracket2i!äSize mounting bracket
Before every journey, make sure that the ISOFIXchild restraint system or the i!äSize child restraint
system is engaged correctly in both mounting
brackets in the vehicle.
60Occupant safety

*NOTE Damage to the seat belt for the
centre seat during installation of the child
restraint systemMake sure that the seat belt is not trap-
ped.Attach the ISOFIX or i!äSize child restraint sys- tem to both mounting brackets in the vehicle.
Securing Top Tether
&WARNING Risk of injury or death if the
rear seat backrests are not locked aser
Top Tether belts are Ntted
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 Nt-
ting Top Tether belts.Observe the lock veriNcation indicator.If the rear 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 ISOFIX or
i!äSize and the vehicle.Occupant safety61

If necessary, slide head restraint 1 upwards
(  page 100).Fit the ISOFIX or i!äSize child restraint system
with Top Tether. In doing so, comply with the
child restraint system manufacturer's installa-
tion instructions.Guide Top Tether belt 5 under head restraint
1 between the two head restraint bars.Hook Top Tether hook 6 of Top Tether belt
5 into Top Tether anchorage 4 without
twisting.Tension Top Tether belt 5. In doing so, com-
ply with the child restraint system manufactur-
er's installation instructions.If necessary, slide head restraint 1 down-
wards (  page 100). Make sure that you do
not interfere with the correct routing of Top
Tether belt 5.Securing the child restraint system with the seat
belt

q Notes on the suitability of seats for attaching
belt-secured child restraint systems
Rear seats
Weight category 0: up to 10 kgLes/right rear seatU, LCentre rear seat 1U, LWeight category 0+: up to 13 kg Les/right
rear seatU, LCentre rear seat 1U, LWeight category I: 9 to 18 kgLes/right
rear seatU, LCentre rear seat 1U, LWeight category II: 15 to 25 kg Les/right
rear seatU, LCentre rear seat 1U, LWeight category III: 22 to 36 kgLes/right
rear seatU, LCentre rear seat 1U, L1 Child restraint systems with a supporting bracket are
not suitable for this seat.U Suitable for child restraint systems of the "Universal"
category in this weight category.L Suitable for semi-universal child restraint systems according to the table in "Recommended child restraint
systems", or if the vehicle and the seat are listed in the
child restraint system manufacturer's vehicle model list.
Notes on child restraint systems on the front passenger seat = If it is absolutely necessary for you to Nt a
child restraint system to the front passenger
seat, be sure to observe the information on
child restraint systems on the front passenger
seat (  page 66).
62Occupant safety

=Observe the speciNc instructions for the rear-
ward-facing and forward-facing child restraint systems. If the front passenger seat is occu- pied, ensure, both before and during the jour-
ney, that the status of the front passenger air-
bag is correct for the current situation
(  page 46).
Front passenger seatWeight category 0: up to 10 kgFront passenger airbag enabled 1XFront passenger airbag disabled 1, 2U, LWeight category 0+: up to 13 kg Front passenger airbag enabled1XFront passenger airbag disabled 1, 2U, LWeight category I: 9 to 18 kgFront passenger airbag enabled1UF, LFront passenger airbag disabled 1, 2U, LWeight category II: 15 to 25 kg Front passenger airbag enabled1UF, LFront passenger airbag disabled 1, 2U, LWeight category III: 22 to 36 kgFront passenger airbag enabled1UF, LFront passenger airbag disabled 1, 2U, L1 Adjust the seat cushion inclination so that the front
edge of the seat cushion is in the highest position and
the rear edge of the seat cushion is in the lowest posi-
tion.2 The vehicle is equipped with automatic front
passenger airbag shutoM. The PASSENGER AIR BAG
OFF indicator lamp must be lit.X Not suitable for children in this weight category.U Suitable for child restraint systems of the "Universal"
category in this weight category.L Suitable for semi-universal child restraint systems according to the table in "Recommended child restraint
systems", or if the vehicle and the seat are listed in the
child restraint system manufacturer's vehicle model list.UF Suitable for forward-facing child restraint systems of the "Universal" category in this weight category.

q Securing the child restraint system with the
seat belt on the rear seat
&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 while the vehicle
is in motion.
= As a result, the vehicle occupant will be
pressed 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.
Occupant safety63

=Objects or loads in the boot or load com-
partment cannot be restrained by the seat backrest.Make sure that the rear bench seat, therear seat and the seat backrest are engaged before every trip.If the rear seat backrest is not engaged and
locked in place, the red lock veriNcation indicator
will be visible.
When Ntting a belt-secured child restraint system,
observe the following:
0073Always comply with the manufacturer's
installation and operating instructions for the
child restraint system used.0073For a child restraint system in the "Universal" or "Semi-Universal" category, make sure thatthe system has been approved for the vehicle
seat.
Observe the notes under "Suitability of seats for attaching belt-secured child restraint sys-
tems" (  page 62).0073When using a weight category 0/0+ baby
car seat and a weight category I rearward-
facing child restraint system on a rear seat: adjust the front seat so that the seat does
not touch the child restraint system.0073When using a weight category I forward- facing child restraint system: remove the
head restraint from the respective seat, if possible.
Aser the child restraint system has been
removed, replace the head restraints again immediately and adjust them correctly.0073The backrest of the forward-facing child
restraint system must, as far as possible, be resting on the seat backrest of the rear seat.0073If the head restraint of the child seat cannot
be fully extended when it is installed in the vehicle, this will result in restrictions on themaximum size setting for child restraint sys-tems in weight category II or III.
Contact with the roof when the head
restraint is fully extended and locked in place
will not result in any restrictions on use.0073The child restraint system must not be put under strain between the roof and the seat
cushion and/or be Ntted facing the wrong
direction. Where possible, adjust the seat
cushion inclination accordingly.0073The child restraint system must not be put under strain by the head restraint. Adjust thehead restraints as appropriate.0073Make sure that the child's feet do not touch
the front seat. If necessary, move the front
seat slightly forwards.Install the child restraint system. The entire base of the child restraint system must always rest on the sitting surface of therear seat.Always make sure that the shoulder belt strapis 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
forward from the seat belt outlet.64Occupant safety

qNotes on vehicles without automatic front
passenger airbag shutoMSticker visible when the front passenger door is
open
Vehicles without automatic front passenger airbag
shutoM have a special sticker aPxed to the side of
the cockpit on the front passenger side.
Make sure you observe the following information:
= Never Nt a rearward-facing child restraint sys-
tem to the front passenger seat
= Always Nt a rearward-facing child restraint sys-
tem to a suitable rear seat
- Suitability of seats for attaching belt-
secured child restraint systems
(  page 62)
- Secure the child restraint system with the
seat belt on the rear seat (  page 63).
= Notes on rearward-facing and forward-facing
child restraint systems on the front passenger
seat (  page 65)
qNotes on rearward-facing and forward-facing
child restraint systems on the front passenger seat&WARNING Risk of injury or death when
using a rearward-facing child restraint sys- tem while the front passenger airbag is
enabled
If you secure a child in a rearward-facing child
restraint system on the front passenger seat
and the PASSENGER AIR BAG OFF indicator
lamp is oM, the front passenger airbag can
deploy in the event of an accident.
The child could be struck by the airbag.
Always ensure that the front passenger
airbag is disabled. The PASSENGER AIR
BAG OFF indicator lamp must be lit.NEVER use a rearward-facing child restraint system on a seat with an ENA-
BLED FRONT AIRBAG. This can result in
the DEATH of or SERIOUS INJURY to the CHILD.Occupant safety65

Observe the speciNc instructions for the rear-
ward-facing and forward-facing child restraint sys-
tems (  page 66).
Warning notice on the front passenger sun visor
Always observe the status of the front passenger airbag on the PASSENGER AIR BAG OFF indicatorlamp:
= If it is absolutely necessary to Nt a child
restraint system to the front passenger seat,
always observe the information on automatic
front passenger airbag shutoM ( page 44).
= When using a rearward-facing child restraint
system on the front passenger seat, the front
passenger airbag must always be disabled.
This is only the case if the PASSENGER AIR
BAG OFF indicator lamp is lit continuously
(  page 46).
= If the PASSENGER AIR BAG OFF indicator
lamp is oM, the front passenger airbag is ena-
bled. The front passenger airbag may deploy
during an accident.

q Securing the child restraint system with the
seat belt on the front passenger seat
When Ntting a belt-secured child restraint system
on the front passenger seat, always observe the
following:0073Observe the notes on rearward-facing and forward-facing child restraint systems on thefront passenger seat (  page 65).0073Observe the child restraint system manufac-
turer's installation and operating instructions.0073For a child restraint system in the "Universal" or "Semi-Universal" category, make sure thatthe system has been approved for the vehicle
seat.Observe the notes under "Suitability of seats for attaching belt-secured child restraint sys-
tems" (  page 62).0073When using a forward-facing child restraint
system in weight category I: remove the headrestraint from the respective seat, if possible.
Aser the child restraint system has been
removed, replace the head restraints again immediately and adjust them correctly.0073The backrest of the forward-facing child
restraint system must, as far as possible, be
resting on the seat backrest of the front passenger seat.0073If the head restraint of the child seat cannot
be fully extended when it is installed in the vehicle, this will result in restrictions on the
maximum size setting for child restraint sys- tems in weight category II or III.
Contact with the roof when the head restraint is fully extended and locked in place
will not result in any restrictions on use.0073The child restraint system must not be put under strain between the roof and the seat66Occupant safety

cushion and/or be Ntted facing the wrong
direction.0073The child restraint system must not be put under strain by the head restraint. Adjust the head restraints as appropriate.0073Never 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
position if possible.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.Install the child restraint system.The entire base of the child restraint system must always rest on the sitting surface of thefront passenger seat.Always make sure that the shoulder belt strapis 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 for-
wards and downwards from the seat belt out-
let.If necessary, adjust the seat belt outlet and
the front passenger seat accordingly.
Child safety locks

q Activating or deactivating the child safety lock
for the rear doors
&WARNING Risk of accident and injury due
to leaving children unattended in the vehi-
cle
If children are les 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 transmission 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 vehicle key out of the reach of
children.&WARNING Danger to life due to exposure
to extreme heat or cold in the vehicle
If people, particularly children, are exposed to
extreme temperatures over an extended
period of time, there is a risk of serious injury
or danger to life.
Occupant safety67

Never leave persons, children in particu-
lar, unattended in the vehicle.&WARNING Risk of accident and injury due
to children les unattended in the vehicle
If children are travelling 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 travelling in the vehi-
cle.Never leave children unattended in the vehicle.When leaving the vehicle, always take the key with you and lock the vehicle.Vehicles for the United Kingdom: observe theimportant safety notes in the "Notes on the addi-tional door lock" section.
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.Press the lever in direction 1 (activate) or 2
(deactivate).Make sure that the child safety locks are work-
ing properly.

q Activating and deactivating the child safety lock
for the rear side windows
68Occupant safety