2014-2021 Mercedes C Class 4 Door Occupant safety -> Safely transporting children in the vehicle User Manual
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Occupant safety -> Safely transporting children in the vehicle for Your Mercedes C Class 4 Door Fourth Generation (2014-2021)

50 Occupant safety  
System limits  
The generic term child restraint system  
dren are travelling in the vehicle  
(/ page 51).  
The system will not initiate any action in the fol‐  
lowing situations:  
The generic term child restraint system is used  
in this Owner's Manual. A child restraint system  
is, for example:  
Be diligent  
R
when reversing  
Bear in mind that negligence when securing a  
child in the child restraint system may have seri‐  
ous consequences. Always be diligent in secur‐  
ing a child carefully before every journey.  
To improve protection for children younger than  
twelve years old or under 1.50 m in height,  
Mercedes-Benz recommends you observe the  
following information:  
R
a baby car seat  
or  
R
a rearward-facing child seat  
R
when the vehicle is towing a trailer and there  
is a risk of a rear impact  
R
a forward-facing child seat  
R
a child booster seat with a backrest and seat  
belt guide  
The system will not initiate any braking applica‐  
tion in the following situations:  
Mercedes-Benz recommends using a child  
booster seat with a backrest.  
R
whilst driving  
R
Always secure the child in a child restraint  
system suitable for this Mercedes-Benz vehi‐  
cle.  
The child restraint system must be appropri‐  
ate to the age, weight and size of the child.  
or  
The child restraint system must be appropriate  
to the age, weight and size of the child.  
R
when entering or exiting a parking space  
while using Active Parking Assist  
R
Observe laws and legal requirements  
Always observe the legal requirements when  
using a child restraint system in the vehicle.  
Make sure that the child restraint system is  
approved in accordance with the valid test speci‐  
fications and guidelines. Further information can  
be obtained at a qualified specialist workshop.  
Mercedes-Benz recommends that you use a  
Mercedes-Benz Service Centre for this purpose.  
Safely transporting children in the vehicle  
Always observe when children are travelling  
in the vehicle  
R
The vehicle seat must be suitable for fitting a  
child restraint system (/ page 55).  
Accident statistics show that children secured  
on the rear seats are generally safer than chil‐  
dren secured on the front seats. For this reason,  
Mercedes-Benz strongly advises that you fit a  
child restraint system to a rear seat.  
% Also strictly observe the safety notes for the  
specific situation. In this way you can recog‐  
nise potential risks and avoid dangers if chil‐  
Occupant safety 51  
Only use approved child restraint systems  
Always secure a child restraint system cor‐  
rectly  
Simply attaching to the securing rings on the  
vehicle can reduce the risk of fitting the child  
restraint system incorrectly.  
When securing a child with the integrated seat  
belt of the ISOFIX or i-Size child restraint sys‐  
tem, always comply with the permissible gross  
weight for the child and child restraint system  
(/ page 58).  
Only child restraint systems that meet the fol‐  
lowing UNECE standards are permitted for use in  
the vehicle:  
&
WARNING Risk of injury or death due to  
incorrect installation of the child  
restraint system  
R
UN-R44  
R
UN-R129 (i-Size child restraint systems)  
The child can then not be protected or  
restrained as intended.  
Information on child restraint system approval  
categories and details on the approval label on  
the child restraint system (/ page 55).  
#
Be sure to comply with the manufactur‐  
Advantage of a rearward-facing child  
restraint system  
It is preferable to transport a baby or a small  
child in a suitable rearward-facing child restraint  
system. In this case, the child sits in the oppo‐  
site direction to the direction of 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.  
er's installation instructions for the  
child restraint system and its correct  
use.  
Detecting risks, avoiding danger  
#
Make sure that the entire base of the  
Securing systems for child restraint systems  
in the vehicle  
child restraint system always rests on  
the sitting surface of the seat.  
Only use the following securing systems for child  
restraint systems:  
#
Never place objects (e.g. cushions)  
under or behind the child restraint sys‐  
tem.  
R
the ISOFIX or i-Size mounting brackets  
R
the vehicle's seat belt system  
#
#
Use child restraint systems only with  
the original cover designed for them.  
Always replace damaged covers with  
genuine covers.  
R
the Top Tether anchorages  
Fitting an ISOFIX or an i-Size child restraint sys‐  
tem is preferred.  
52 Occupant safety  
-
Securing the child restraint system with  
the seat belt on the front passenger seat  
(/ page 66). Observe the specific  
instructions for the rearward-facing and  
forward-facing child restraint systems  
(/ page 65).  
If the front passenger seat is occupied,  
ensure, both before and during the jour‐  
ney, that the status of the front  
#
Only affix accessories which have been  
specially approved for this child  
restraint system by the child restraint  
system's manufacturer.  
&
WARNING Risk of injury or death due to  
unsecured child restraint systems in the  
vehicle  
If the child restraint system is incorrectly fit‐  
ted or not secured, it can come loose.  
The child restraint system could be flung  
around and hit vehicle occupants.  
Mercedes‑Benz recommends Mercedes-Benz  
care products for cleaning child restraint sys‐  
tems recommended by Mercedes-Benz.  
#
Always install child restraint systems  
correctly, even when not in use.  
Always comply with the child restraint  
system manufacturer's installation  
instructions.  
Only use child restraint systems which are in  
proper working condition  
passenger airbag is correct for the cur‐  
rent situation (/ page 46).  
#
R
R
Observe the warning labels in the vehicle  
interior and on the child restraint system.  
Also secure Top Tether if present.  
&
WARNING Risk of injury or death caused  
by the use of damaged child restraint  
systems  
R
Always observe the child restraint system  
manufacturer's installation and operating  
instructions as well as the vehicle-specific  
information:  
Child restraint systems or their retaining sys‐  
tems that have been subjected to stress in  
an accident may not be able to perform their  
intended protective function.  
It may be the case that the child cannot be  
properly restrained.  
Do not modify the child restraint system  
&
WARNING Risk of injury due to modifi‐  
cations to the child restraint system  
-
Fitting the ISOFIX or i-Size child restraint  
system to the rear seat (/ page 58).  
Securing the child restraint system with  
the seat belt on the rear seat  
(/ page 63).  
The child restraint system can no longer  
function properly. This poses an increased  
risk of injury.  
-
#
Always immediately replace child  
restraint systems that have been dam‐  
aged or involved in an accident.  
#
Never modify a child restraint system.  
Occupant safety 53  
#
#
#
#
#
Have the securing systems for the child  
restraint systems checked at a qualified  
specialist workshop before installing a  
child restraint system again.  
Never leave children unattended in the  
vehicle.  
Never leave children unattended in the  
vehicle.  
When leaving the vehicle, always take  
the key with you and lock the vehicle.  
Observe when stopping or parking  
Keep the key out of reach of children.  
&
Avoid direct sunlight  
WARNING Risk of accident and injury  
due to children left unattended in the  
vehicle  
This also applies to the Digital Vehicle Key  
sticker.  
&
WARNING Risk of burns when the child  
seat is exposed to direct sunlight  
If children are left unsupervised in the vehi‐  
cle, they could, in particular:  
If the child restraint system is exposed to  
direct sunlight or heat, parts could heat up.  
Children could suffer burns from these parts,  
particularly on the metallic parts of the child  
restraint system.  
&
WARNING Risk of fatal injury due to  
exposure to extreme heat or cold in the  
vehicle  
R
open doors, thereby endangering other  
persons or road users.  
get out and be struck by oncoming traf‐  
fic.  
operate vehicle equipment and become  
trapped, for example.  
R
If people –particularly children – are exposed  
to extreme temperatures over an extended  
period of time, there is a risk of serious or  
even fatal injury!  
#
Always make sure that the child  
restraint system is not exposed to  
direct sunlight.  
Protect the child restraint system, e.g.  
with a blanket.  
If the child restraint system has been  
exposed to direct sunlight, allow it to  
cool before securing a child in it.  
R
#
Never leave anyone – particularly chil‐  
dren – unattended in the vehicle.  
Never leave animals in the vehicle unat‐  
tended.  
In addition, the children could also set the  
vehicle in motion, for example by:  
#
#
R
releasing the parking brake.  
changing the transmission position.  
starting the vehicle.  
#
R
R
54 Occupant safety  
Overview of recommended child restraint  
systems  
Category I (9 to 18 kg and between approx.  
9 months and 4 years)  
Category I (9 to 18 kg and from approx‐  
imately 9 months to 4 years)  
DUO plus  
DUO plus  
% Further information on the correct child  
restraint system can be obtained at a quali‐  
fied specialist workshop. Mercedes-Benz  
recommends that you use a Mercedes-Benz  
Service Centre for this purpose.  
Type1  
Type1  
Size category  
Approval  
B1  
Approval  
E1 04 301 133  
Order number2  
E1 04 301 133  
A 000 970 43 02  
2 With colour code 9H95.  
A 000 970 43 02  
2 With colour code 9H95.  
Order number2  
1 Manufacturer: Britax Römer.  
Securing with ISOFIX  
1 Manufacturer: Britax Römer.  
Category II/III (15 to 36 kg and from approx‐  
imately 4 to 12 years)  
Category 0+ (up to 13 kg and approx.  
15 months)  
Securing with the vehicle seat belt  
Type1  
Type1  
KIDFIX XP  
BABY SAFE plus  
Category 0 (up to 10 kg and approx.  
6 months) and category 0+ (up to 13 kg and  
approx. 15 months)  
Approval  
Order number2  
Type1  
E1 04 301 304  
A 000 970 49 02  
AMG KIDFIX XP  
Size category  
Approval  
E
E1 04 301 146  
B6 6 86 8224  
2 With colour code 9H95.  
Type1  
BABY SAFE plus II  
Order number2  
Approval  
E1 04 301 146  
1 Manufacturer: Britax Römer.  
Approval  
E1 04 301 304  
Order number2  
A 000 970 38 02  
2 With colour code 9H95.  
Order number2  
A 000 970 33 02  
2 With colour code 9H95.  
1 Manufacturer: Britax Römer.  
1 Manufacturer: Britax Römer.  
Occupant safety 55  
Overview of suitable seats in the vehicle for  
fitting a child restraint system  
is correct for the current situation  
There may be further information such as the  
ISOFIX size categories, depending on the  
approval category of the child restraint system.  
(/ page 46).  
R
Observe the notes on automatic front  
passenger airbag shutoff (/ page 44)  
Left/right rear seat  
Approval categories in accordance with UN-  
R44  
Preferred securing system:  
® ISOFIX child seat securing system  
(/ page 57)  
Centre rear seat  
Securing system:  
Vehicle seat belt (/ page 62)  
7
or  
° i-Size child seat securing system  
(/ page 58)  
¯ Also secure Top Tether if present  
(/ page 60)  
Approval categories for child restraint sys‐  
tems  
Only use approved child restraint systems  
Alternative securing system:  
Only child restraint systems that meet the fol‐  
lowing UNECE standards are permitted for use in  
the vehicle:  
Vehicle seat belt (/ page 62)  
7
Front passenger seat  
R
UN-R44  
Securing system:  
R
UN-R129 (i-Size child restraint systems)  
Vehicle seat belt (/ page 62)  
7
Identification on the child restraint system  
Information about the approval category, weight  
category and approval number, for example, is  
on the approval label on the child restraint sys‐  
tem.  
Be sure to observe:  
R
If the front passenger seat is occupied,  
Example of an approval label  
ensure, both before and during the journey,  
that the status of the front passenger airbag  
R
Universal: child restraint systems in the  
"Universal" category are approved for instal‐  
56 Occupant safety  
Approval categories in accordance with UN-  
R129  
lation in vehicles. They can be used, in  
accordance with overviews of the suitability  
of seats for securing child restraint systems,  
on seats labelled U, UF or IUF.  
The identification IUF refers to ISOFIX child  
restraint systems in the "Universal" category.  
These child restraint systems must also be  
secured using Top Tether or support points.  
suitability of seats for securing child restraint  
systems, on seats labelled i‑U.  
The identification i‑U refers to i‑Size child  
restraint systems in the "Universal" category.  
These child restraint systems must also be  
secured using Top Tether or support points.  
Observe the suitability of vehicle seats  
Depending on the approval category, there are  
forward-facing and rearward-facing child  
restraint systems. Their use can be restricted for  
certain vehicle seats:  
R
Semi-Universal: child restraint systems in  
the "Semi-Universal" category may only be  
used if the vehicle and vehicle seat are listed  
in the child restraint system manufacturer's  
vehicle model list.  
R
Suitability of the seats for attaching ISOFIX  
child restraint systems (/ page 57)  
R
Vehicle-specific: child restraint systems in  
R
Suitability of seats for securing i‑Size child  
restraint systems (/ page 58).  
the "vehicle-specific" category may only be  
used if the vehicle and vehicle seat are listed  
in the child restraint system manufacturer's  
vehicle model list.  
R
Suitability of seats for attaching belt-secured  
child restraint systems (/ page 62)  
Example of an approval label  
R
i‑Size: child restraint systems in the "i‑Size"  
category are approved for installation in vehi‐  
cles with i‑Size mounting brackets. They can  
be used, in accordance with overviews of the  
Occupant safety 57  
Fitting an ISOFIX or i-Size child restraint sys‐  
tem on the rear seat  
Weight group 0 (up to 10 kg and up to  
approx. 6 months)  
Size class –  
Equipment  
Left/right rear seat  
Size class –  
Equipment  
Left/right rear seat  
Overview of suitability of the seats for  
attaching ISOFIX child restraint systems  
C – ISO/R3  
IL (1)  
ISOFIX is a standardised securing system for  
specially designed restraint systems.  
® The symbol indicates seats suitable for  
attaching an ISOFIX child restraint system  
in accordance with UN R44 (/ page 55).  
IL Suitable for ISOFIX child restraint systems according to the  
table in "Overview of the recommended child restraint systems",  
or if the vehicle and the seat are listed on the child restraint sys‐  
tem manufacturer's vehicle model list.  
E – ISO/R1  
IL  
IL Suitable for ISOFIX child restraint systems according to the  
table in "Overview of the recommended child restraint systems",  
or if the vehicle and the seat are listed on the child restraint sys‐  
tem manufacturer's vehicle model list.  
(1) When using a child restraint system of size class (ISO/R3),  
move the front seat into the highest position. Make sure that the  
seat backrest of the front seat does not rest against the child  
restraint system.  
Attach only child restraint systems that  
are approved in accordance with UN R44  
as per the following ISOFIX tables.  
Weight group 0+ (up to 13 kg and up to  
approx. 15 months)  
Carry cot  
Size class –  
Equipment  
Left/right rear seat  
Weight group 1 (9–18 kg and approx. 9  
months to 4 years)  
Size class –  
Equipment  
Left/right rear seat  
Size class –  
Equipment  
Left/right rear seat  
E – ISO/R1  
D – ISO/R2  
IL  
IL  
F – ISO/L1  
G – ISO/L2  
X
X
D – ISO/R2  
C – ISO/R3  
B – ISO/F2  
IL  
X Not suitable for an ISOFIX child restraint system in this weight  
group and/or size class.  
IL (1)  
IUF  
58 Occupant safety  
Fitting an ISOFIX or i‑Size child restraint sys‐  
tem on the rear seat  
in accordance with UN R129  
Size class –  
Equipment  
Left/right rear seat  
(/ page 55).  
Child restraint systems that are permitted  
in accordance with UN R44 as per the  
ISOFIX tables (/ page 57) or UN R129 as  
per the following i‑Size tables may be  
attached.  
&
WARNING Risk of accident if the rear  
bench seat, rear seat and seat backrest  
are not engaged  
B1 – ISO/F2X  
A – ISO/F3  
IUF  
IUF  
The rear bench seat, rear seat and seat back‐  
rest may fold forwards, even while the vehi‐  
cle is in motion.  
IL Suitable for ISOFIX child restraint systems according to the  
table in "Overview of the recommended child restraint systems",  
or if the vehicle and the seat are listed on the child restraint sys‐  
tem manufacturer's vehicle model list.  
i‑Size child restraint systems (ISO/R2, ISO/  
F2X, ISO/B2, ISO/B3)  
R
As a result, the vehicle occupant will be  
Front passenger  
seat  
Left/right rear seat  
pressed into the seat belt with increased  
force. The seat belt will not be able to  
protect as intended and could cause  
additional injury.  
IUF Suitable for forward-facing ISOFIX child restraint systems of  
the "Universal" category in this weight group.  
X
i‑U  
(1) When using a child restraint system of size class (ISO/R3),  
move the front seat into the highest position. Make sure that the  
seat backrest of the front seat does not rest against the child  
restraint system.  
X Not suitable for an i-Size  
child restraint system in the  
"Universal" category.  
i-U Suitable for forward-facing  
and rearward-facing i-Size  
child restraint systems in the  
"Universal" category.  
R
Objects or loads in the boot or load com‐  
partment cannot be restrained by the  
seat backrest.  
#
Make sure that the rear bench seat, the  
Overview of suitability of the seats for  
attaching i‑Size child restraint systems  
rear seat and the seat backrest are  
engaged before every trip.  
i‑Size is a standardised securing system for spe‐  
cially designed restraint systems.  
If the left and right seat backrests are not  
engaged and locked in place, this will be shown  
° The symbol indicates seats suitable for  
attaching an i‑Size child restraint system  
Occupant safety 59  
on the multifunction display on the instrument  
cluster.  
If the centre seat backrest is not engaged and  
locked in place, the red lock verification indica‐  
tor will be visible.  
Always comply with the information about the  
mass of the child restraint system:  
Always comply with the manufacturer's  
installation and operating instructions for  
the child restraint system used.  
Make sure that the child's feet do not touch  
the front seat. If necessary, move the front  
seat slightly forwards.  
O
O
R
in the manufacturer's installation and operat‐  
ing instructions for the child restraint system  
used  
R
on a label on the child restraint system, if  
present  
&
WARNING Risk of injury or death if the  
permissible gross mass of the child and  
child restraint system is exceeded.  
®When fitting an ISOFIX child restraint sys‐  
tem, also observe the following:  
Regularly check that the permissible gross mass  
of the child and child restraint system is still  
complied with.  
When fitting a child restraint system, observe  
the following:  
When using a Group 0/0+ baby car seat  
O
Too much load may be placed on the ISOFIX  
or i‑Size child restraint systems and the child  
may not be restrained correctly in the event  
of an accident, for example.  
and a Group 1 rearward-facing child  
restraint system on a rear seat: adjust  
the front seat so that the seat does not  
touch the child restraint system.  
Always observe the correct use of the seats  
and consider their suitability for attaching a  
child restraint system.  
O
#
If the child and the child restraint sys‐  
When using a Group 1 forward-facing  
child restraint system: remove the head  
restraint from the respective seat, if possi‐  
ble. In addition, the backrest of the child  
restraint system must lie as flat as possible  
against the backrest of the vehicle seat.  
After the child restraint system has been  
removed, replace the head restraint immedi‐  
ately and adjust all head restraints cor‐  
rectly.  
O
tem together weigh more than 33 kg,  
use only an ISOFIX or i‑Size child  
restraint system that secures the child  
using the vehicle seat belt.  
ISOFIX child seat securing system  
(/ page 57)  
or  
i‑Size child seat securing system  
(/ page 58)  
#
Also secure the child restraint system  
with the Top Tether belt, if available.  
60 Occupant safety  
For certain child restraint systems in weight  
group 2 or 3, there may be restrictions on  
the maximum size setting, e.g. due to possi‐  
ble contact with the roof.  
The child restraint system must not be ten‐  
sioned between the roof and the seat cush‐  
ion and/or be fitted facing the wrong direc‐  
tion. Where possible, adjust the seat cush‐  
ion inclination accordingly.  
After the child restraint system has been  
system is engaged correctly in both mounting  
O
removed, replace the head restraint immedi‐ brackets in the vehicle.  
ately and adjust all head restraints cor‐  
NOTE Damage to the seat belt for the  
centre seat during installation of the  
child restraint system  
rectly.  
*
O
#
Make sure that the seat belt is not trap‐  
ped.  
#
Attach the ISOFIX or i‑Size child restraint sys‐  
tem to both mounting brackets in the vehicle.  
The child restraint system must not be put  
under strain by the head restraint. Adjust  
the head restraints accordingly.  
O
Securing a Top Tether  
° When fitting an i‑Size child restraint sys‐  
tem, also observe the following:  
&
WARNING Risk of injury or death if the  
rear seat backrests are not locked after  
fitting Top Tether belts  
When using a rearward-facing child  
restraint system: adjust the front seat so  
that it does not touch the child restraint sys‐  
tem.  
O
The rear seat backrests may fold forwards  
when driving.  
In this case, child restraint systems may no  
longer perform their intended protective  
function. Additional injuries may also be  
caused.  
When using a forward-facing child  
restraint system: remove the head  
O
1
2
ISOFIX mounting bracket  
i‑Size mounting bracket  
restraint from the respective seat, if possi‐  
ble. In addition, the backrest of the child  
restraint system must lie as flat as possible  
against the backrest of the vehicle seat.  
Before every journey, make sure that the ISOFIX  
child restraint system or the i‑Size child restraint  
Occupant safety 61  
#
#
Always lock rear seat backrests after  
fitting Top Tether belts.  
Pay attention to the lock verification  
indicator.  
If the left and right seat backrests are not  
engaged and locked in place, this will be shown  
on the multifunction display on the instrument  
cluster.  
If the centre seat backrest is not engaged and  
locked in place, the red lock verification indica‐  
tor will be visible.  
¯ If the child restraint system is equipped  
with a Top Tether belt:  
#
#
#
Guide Top Tether belt 4 under head  
restraint 1 between the two head restraint  
bars.  
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 manufac‐  
turer's installation instructions.  
The risk of injury can be reduced by a Top  
Tether. The Top Tether belt enables an  
additional connection between the child  
restraint system attached with ISOFIX or  
i‑Size and the vehicle.  
#
#
#
If necessary, slide head restraint 1 upwards  
(/ page 101).  
Fold up cover 2 of Top Tether anchorage  
3.  
#
#
Fold down cover 2 of Top Tether anchorage  
3.  
Fit the ISOFIX or i‑Size child restraint system  
with Top Tether. In doing so, comply with the  
child restraint system manufacturer's instal‐  
lation instructions.  
If necessary, slide head restraint 1 down‐  
wards (/ page 101). Make sure that you do  
62 Occupant safety  
Notes on child restraint systems on the front  
passenger seat  
not interfere with the correct routing of Top  
Weight category II: 15 to 25 kg  
Left/right rear seat  
Tether belt 4.  
R
If it is absolutely necessary for you to fit a  
U, L  
U, L  
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).  
Securing the child restraint system with the  
seat belt  
Centre rear seat1  
Weight category III: 22 to 36 kg  
Left/right rear seat  
Notes on the suitability of seats for attach‐  
ing belt-secured child restraint systems  
R
U, L  
U, L  
Observe the specific instructions for the  
rearward-facing and forward-facing child  
restraint systems. If the front passenger seat  
is occupied, ensure, both before and during  
the journey, that the status of the front  
passenger airbag is correct for the current  
situation (/ page 46).  
Rear seats  
Centre rear seat1  
Weight category 0: up to 10 kg  
1 Child restraint systems with a supporting bracket  
are not suitable for this seat.  
Left/right rear seat  
U, L  
U, L  
Centre rear seat1  
U Suitable for child restraint systems of the "Univer‐  
sal" category in this weight category.  
Front passenger seat  
Weight category 0+: up to 13 kg  
Left/right rear seat  
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.  
Weight category 0: up to 10 kg  
U, L  
U, L  
Front passenger airbag enabled1  
Front passenger airbag disabled1, 2  
Weight category 0+: up to 13 kg  
X
Centre rear seat1  
U, L  
Weight category I: 9 to 18 kg  
Left/right rear seat  
U, L  
U, L  
Front passenger airbag enabled 1  
X
Centre rear seat1  
Occupant safety 63  
Securing the child restraint system with the  
seat belt on the rear seat  
2 The vehicle is equipped with automatic front  
passenger airbag shutoff. The PASSENGER AIR BAG  
OFF indicator lamp must be lit.  
Front passenger airbag disabled1, 2  
U, L  
Weight category I: 9 to 18 kg  
&
WARNING Risk of accident if the rear  
bench seat, rear seat and seat backrest  
are not engaged  
Front passenger airbag enabled 1  
Front passenger airbag disabled1, 2  
Weight category II: 15 to 25 kg  
UF, L  
U, L  
X Not suitable for children in this weight category.  
U Suitable for child restraint systems of the "Univer‐  
sal" category in this weight category.  
The rear bench seat, rear seat and seat back‐  
rest may fold forwards, even while the vehi‐  
cle is in motion.  
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.  
Front passenger airbag enabled 1  
Front passenger airbag disabled1, 2  
Weight category III: 22 to 36 kg  
UF, L  
U, L  
R
As a result, the vehicle occupant will be  
pressed into the seat belt with increased  
force. The seat belt will not be able to  
protect as intended and could cause  
additional injury.  
Front passenger airbag enabled1  
Front passenger airbag disabled1, 2  
UF, L  
U, L  
R
Objects or loads in the boot or load com‐  
UF Suitable for forward-facing child restraint systems  
of the "Universal" category in this weight category.  
partment cannot be restrained by the  
seat backrest.  
1 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.  
#
Make sure that the rear bench seat, the  
rear seat and the seat backrest are  
engaged before every trip.  
If the left and right seat backrests are not  
engaged and locked in place, this will be shown  
64 Occupant safety  
on the multifunction display on the instrument  
cluster.  
If the centre seat backrest is not engaged and  
locked in place, the red lock verification indica‐  
tor will be visible.  
restraint from the respective seat, if possi‐  
ble.  
After the child restraint system has been  
removed, replace the head restraint immedi‐  
ately and adjust all head restraints cor‐  
rectly.  
The backrest of the forward-facing child  
restraint system must, as far as possible, be  
resting on the seat backrest of the rear  
seat.  
For certain child restraint systems in weight  
category II or III, there may be restrictions  
on the maximum size setting, e.g. due to  
possible contact with the roof.  
The child restraint system must not be put  
under strain between the roof and the seat  
cushion and/or be fitted facing the wrong  
direction. Where possible, adjust the seat  
cushion inclination accordingly.  
The child restraint system must not be put  
under strain by the head restraint. Adjust  
the head restraints accordingly.  
Make sure that the child's feet do not touch  
the front seat. If necessary, move the front  
seat slightly forwards.  
O
#
Install the child restraint system.  
The entire base of the child restraint system  
must always rest on the sitting surface of the  
rear seat.  
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 for‐  
wards and downwards from the seat belt out‐  
let.  
When fitting a belt-secured child restraint  
system, observe the following:  
O
O
O
Always comply with the manufacturer's  
installation and operating instructions for  
the child restraint system used.  
For a child restraint system in the "Univer‐  
sal" or "Semi-Universal" category, make  
sure that the system has been approved for  
the vehicle seat.  
O
O
#
Observe the notes under "Suitability of  
seats for attaching belt-secured child  
restraint systems" (/ page 62).  
When using a category 0/0+ baby car  
seat and a 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.  
O
O
O
When using a category I forward-facing  
child restraint system: remove the head  
Occupant safety 65  
Notes on vehicles without automatic front  
passenger airbag shutoff  
Notes on rearward-facing and forward-facing  
child restraint systems on the front  
passenger seat  
Make sure you observe the following informa‐  
tion:  
R
Never fit a rearward-facing child restraint  
system to the front passenger seat  
&
WARNING Risk of injury or death when  
using a rearward-facing child restraint  
system while the front passenger airbag  
is enabled  
R
Always fit a rearward-facing child restraint  
system to a suitable rear seat  
-
Suitability of seats for attaching belt-  
secured child restraint systems  
If you secure a child in a rearward-facing  
child restraint system on the front passenger  
seat and the PASSENGER AIR BAG OFF indi‐  
cator lamp is off, the front passenger airbag  
can deploy in the event of an accident.  
(/ page 62).  
-
Secure the child restraint system with the  
seat belt on the rear seat (/ page 63).  
R
Notes on rearward-facing and forward-facing  
child restraint systems on the front  
passenger seat (/ page 65).  
The child could be struck by the airbag.  
Always ensure that the front passenger air‐  
bag 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 ENABLED FRONT  
AIRBAG; DEATH or SERIOUS INJURY to the  
CHILD can occur.  
Sticker visible when the front passenger door  
is open  
Vehicles without automatic front passenger air‐  
bag shutoff have a special sticker affixed to the  
side of the cockpit on the front passenger side.  
66 Occupant safety  
Observe the specific instructions for the rear‐  
ward-facing and forward-facing child restraint  
systems (/ page 66).  
passenger airbag must always be disabled.  
This is only the case if the PASSENGER AIR  
BAG OFF indicator lamp is lit continuously  
(/ page 46).  
When using a forward-facing child restraint  
system in category I: remove the head  
restraint from the respective seat, if possi‐  
ble.  
O
R
If the PASSENGER AIR BAG OFF indicator  
lamp is off, the front passenger airbag is ena‐  
bled. The front passenger airbag may deploy  
during an accident.  
After the child restraint system has been  
removed, replace the head restraint immedi‐  
ately and adjust all head restraints cor‐  
rectly.  
The backrest of the forward-facing child  
restraint system must, as far as possible, be  
resting on the seat backrest of the front  
passenger seat.  
For certain child restraint systems in weight  
category II or III, there may be restrictions  
on the maximum size setting, e.g. due to  
possible contact with the roof.  
The child restraint system must not be put  
under strain between the roof and the seat  
cushion and/or be fitted facing the wrong  
direction.  
The child restraint system must not be put  
under strain by the head restraint. Adjust  
the head restraints accordingly.  
O
O
O
O
Securing the child restraint system with the  
seat belt on the front passenger seat  
When fitting a belt-secured child restraint sys‐  
tem on the front passenger seat, always observe  
the following:  
Warning notice on the front passenger sun visor  
Observe the child restraint system manufac‐  
turer's installation and operating instruc‐  
tions.  
O
Always observe the status of the front passenger  
airbag on the PASSENGER AIR BAG OFF indica‐  
tor lamp:  
For a child restraint system in the "Univer‐  
sal" or "Semi-Universal" category, make  
sure that the system has been approved for  
the vehicle seat.  
O
R
If it is absolutely necessary to fit a child  
restraint system to the front passenger seat,  
always observe the information on automatic  
front passenger airbag shutoff (/ page 44).  
Observe the notes under "Suitability of  
seats for attaching belt-secured child  
restraint systems" (/ page 62).  
R
When using a rearward-facing child restraint  
system on the front passenger seat, the front  
Occupant safety 67  
Never place objects (e.g. cushions) under or  
behind the child restraint system.  
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.  
O
R
operate vehicle equipment and become  
trapped, for example.  
#
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  
the front 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 vertical  
position possible.  
In addition, the children could also set the  
vehicle in motion, for example by:  
R
releasing the parking brake.  
changing the transmission position.  
starting the vehicle.  
#
#
#
R
R
Child safety locks  
#
Never leave children unattended in the  
vehicle.  
When leaving the vehicle, always take  
the key with you and lock the vehicle.  
Activating or deactivating the child safety  
lock for the rear doors  
#
#
#
&
WARNING Risk of accident and injury  
due to children left unattended in the  
vehicle  
#
Keep the key out of reach of children.  
Fit the child restraint system.  
The entire base of the child restraint system  
must always rest on the sitting surface of the  
front passenger seat.  
This also applies to the Digital Vehicle Key  
sticker.  
If children are left unsupervised in the vehi‐  
cle, they could, in particular:  
&
WARNING Risk of fatal injury due to  
exposure to extreme heat or cold in the  
vehicle  
#
R
open doors, thereby endangering other  
Always make sure that the shoulder belt  
strap is correctly routed from the seat belt  
persons or road users.  
R
get out and be struck by oncoming traf‐  
fic.  
If people –particularly children – are exposed  
to extreme temperatures over an extended  
68 Occupant safety  
#
#
period of time, there is a risk of serious or  
even fatal injury!  
Never leave children unattended in the  
vehicle.  
When leaving the vehicle, always take  
the key with you and lock the vehicle.  
#
Never leave anyone – particularly chil‐  
dren – unattended in the vehicle.  
#
Never leave animals in the vehicle unat‐  
tended.  
This also applies to the Digital Vehicle Key  
sticker.  
Vehicles for the United Kingdom: observe the  
important 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.  
&
WARNING Risk of accident and injury  
due to children left unattended in the  
vehicle  
If children are travelling in the vehicle, they  
could, in particular:  
R
open doors, thereby endangering other  
persons or road users.  
#
#
Press the lever in direction 1 (activate) or  
2 (deactivate).  
R
get out and be struck by oncoming traf‐  
fic.  
Make sure that the child safety locks are  
working properly.  
R
operate vehicle equipment and become  
trapped, for example.  
#
Always activate the installed child  
safety locks if children are travelling in  
the vehicle.  

Related Topics

Occupant safety
Restraint system Seat belts Airbags PRE-SAFE? system Notes on pets in the vehicle

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