Get Safely transporting children in the vehicle Guide for Mercedes C Class 4 Door 2023

Safely transporting children in the vehicle

117

R

Secure children up to a height of 1.50 m on

the seat (see illustration above) properly with

a suitable and approved child restraint system

(/ page 124), and secure small children in a

rearward-facing child restraint system.

Observe the child restraint system manufac-

turer's installation instructions.

The following child restraint systems within the

Universal category are approved: U, UF, i-U, IUF.

Observe the other alternatives for use

(/ page 128).

Brief overview of most important points

Safely transporting children in the vehicle

Front passenger seat

Securing system:

7

Vehicle seat belt (/ page 138)

Leꢀ/right rear seat (preferred seats)

Preferred securing system:

®

Be sure to observe:

R

If the front passenger seat is occupied, ensure

LATCH-type (ISOFIX) securing rings

(/ page 128)

that the status of the front passenger airbag is

correct for the current situation

(/ page 104).

or

°

and

i‑Size securing rings (/ page 130)

The following child restraint systems within the

Universal category are approved: U^(*), UF.

Observe the other alternatives for use

(/ page 131).

¯

Also secure Top Tether if present

(/ page 136).

(*) rearward-facing child restraint system only in

combination with automatic airbag shutoﬀ

Alternative securing system:

7

Always observe the following when transporting

children:

Vehicle seat belt (/ page 138)

Centre rear seat

Securing system:

¯

Additionally attach Top Tether if recom-

mended by the manufacturer of the child

restraint system (/ page 136).

R

Never leave children unattended in the vehicle

(/ page 119).

7

Vehicle seat belt (/ page 138)

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118

R

The following belt-secured child restraint systems

within the Universal category are approved: U, UF.

Observe the other alternatives for use

(/ page 138).

The vehicle seat must be suitable for the child

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 speciﬁ-

cations 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.

restraint system to be ﬁtted:

-

LATCH-type (ISOFIX) securing rings:

(/ page 128)

-

i‑Size securing rings: (/ page 130)

Important safety notes

Basic information

-

Securing with the vehicle seat belt:

(/ page 131)

Accident statistics show that children secured on

the rear seats are generally safer than children

secured on the front seats. For this reason,

Mercedes-Benz strongly advises that you ﬁt a

child restraint system to a rear seat.

Be diligent

Bear in mind that negligence when securing a

child in the child restraint system may have seri-

ous consequences. Always be diligent in securing

a child carefully before every journey.

Securing systems for child restraint systems in

the vehicle

Only use the following securing systems for child

restraint systems:

Never allow babies and children to travel sitting

on the lap of another vehicle occupant.

To improve protection for children younger than

12 years old or under 1.50 m in height,

Mercedes-Benz recommends you observe the fol-

lowing information:

The generic term child restraint system

R

the ISOFIX/LATCH or i-Size securing rings

The generic term child restraint system is used in

this Owner's Manual. A child restraint system is,

for example:

R

the vehicle's seat belt system

R

the Top Tether anchorages

Simply attaching to the ISOFIX/LATCH securing

rings or i‑Size 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/LATCH or i-Size child restraint

system, always comply with the permissible gross

a baby car seat

a rearward-facing child seat

a forward-facing child seat

a child booster seat – Mercedes-Benz recom-

mends using a child booster seat with a back-

rest and seat belt guide

R

Always secure the child in a child restraint sys-

tem suitable for this Mercedes-Benz vehicle.

R

The child restraint system must be appropriate

to the age, weight and size of the child.

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Safely transporting children in the vehicle – Important safety notes

119

weight for the child and child restraint system

#

Always replace damaged covers with

genuine covers.

Always comply with the manufacturer's

installation instructions for the child

restraint system and its correct use.

Always ﬁt child restraint systems cor-

rectly, even if they are transported

unused in the vehicle.

(/ page 135).

R

Always observe the vehicle-speciﬁc informa-

tion.

#

Important warning notices

Always secure a child restraint system correctly

-

Fitting an ISOFIX or i‑Size child restraint

system on the rear seat (/ page 135).

&

WARNING Risk of injury or death due to

incorrect installation of the child restraint

system

Do not modify the child restraint system

-

Securing the child restraint system with

the seat belt (/ page 138).

&

WARNING Risk of injury due to modiﬁca-

tions to the child restraint system

R

Observe the warning labels in the vehicle inte-

rior and on the child restraint system.

The child can then not be protected or

restrained as intended.

The child restraint system can no longer func-

tion properly. This poses an increased risk of

injury.

#

Be sure to comply with the manufactur-

&

WARNING Risk of injury or death due to

unsecured child restraint systems in the

vehicle

er's installation instructions for the child

restraint system and its correct use.

#

Never modify a child restraint system.

Only aﬃx accessories which have been

specially approved for this child restraint

system by the child restraint system's

manufacturer.

#

Make sure that the entire base of the

#

If the child restraint system is incorrectly ﬁtted

or not secured, it can become detached.

child restraint system always rests on

the sitting surface of the seat.

The child cannot then be protected or

restrained as intended.

The unused child restraint system can be

become detached and strike vehicle occu-

pants.

#

Never place objects (e.g. cushions)

under or behind the child restraint sys-

tem.

#

Use child restraint systems only with the

original cover designed for them.

F206 0105 02

Safely transporting children in the vehicle – Important safety notes

120

Only use child restraint systems which are in

proper working condition

Avoid direct sunlight

Observe when stopping or parking

&

WARNING Risk of burns when the child

seat is exposed to direct sunlight

WARNING Risk of fatal injury due to expo-

sure to extreme heat or cold in the vehicle

&

WARNING Risk of injury or death caused

by the use of damaged child restraint sys-

tems

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 metallic parts of the child

restraint system.

If persons, particularly children, are subjected

to prolonged exposure to intense heat or cold,

there is a risk of severe injury or even death.

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.

#

Never leave persons, particularly chil-

dren, unattended in the vehicle.

#

Always make sure that the child restraint

system is not exposed to direct sunlight.

&

WARNING Accident– and risk of injury

with unsupervised children in the vehicle

#

Protect the child restraint system with a

blanket, for example.

#

Always immediately replace child

If you leave children unattended in the vehicle,

they can in particular

restraint systems that have been dam-

aged or involved in an accident.

#

If the child restraint system has been

exposed to direct sunlight, allow it to

cool before securing a child into it.

R

Open doors and thereby endanger other

persons or road users.

#

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.

R

get out of the car and are hit by traﬃc.

R

Operate vehicle equipment and become

trapped, forexample.

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Safely transporting children in the vehicle – Important safety notes

121

Overview of warning stickers in the vehicle

Notes on rearward-facing and forward-facing child

restraint systems on the front passenger seat

In addition, the children could also set the

vehicle in motion, for exampleby:

R

releasing the parking brake.

change the gearbox setting.

start the vehicle.

&

WARNING Risk of injury or death when

using a rearward-facing child restraint sys-

tem while the front passenger airbag is

enabled

R

#

Never leave children unattended in the

vehicle.

When leaving the vehicle, always take the

SmartKey with you and lock the vehicle.

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 oﬀ, the front passenger airbag can

deploy in the event of an accident.

#

Keep the key out of reach of children.

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

1

2

Front passenger airbag warning (on the front

restraint system on a seat with an ENA-

BLED FRONT AIRBAG. This can result in

the DEATH of or SERIOUS INJURY to the

CHILD.

passenger sun visor) (/ page 121)

Vehicles without automatic front passenger

airbag shutoﬀ warning (visible when the front

passenger door is open) (/ page 124)

F206 0105 02

Safely transporting children in the vehicle – Important safety notes

122

Observe the speciﬁc instructions for the rear-

ward-facing and forward-facing child restraint sys-

tems (/ page 133).

BAG OFF indicator lamp is lit continuously

#

Do not place any objects between the

seat surface and the child restraint sys-

tem.

Make sure that the entire base of the

child restraint system is always resting

on the seat surface of the co-driver seat.

The backrest of the forward-facing child

restraint system must, as far as possible,

be resting on the seat backrest of the

co-driver seat.

It is essential to comply with the child

restraint system manufacturer's installa-

tion instructions.

(/ page 104).

R

The front passenger airbag is enabled when

the PASSENGER AIR BAG OFF indicator lamp

is not lit. The front passenger airbag may be

deployed during an accident. In that case, do

not use rearward-facing child restraint sys-

tems.

Information on the automatic front passenger air-

bag shutoﬀ

#

If the front passenger seat is occupied, ensure,

both before and during the journey, that the sta-

tus of the front passenger airbag is correct for the

current situation.

Warning notice on the front passenger sun visor

When ﬁtting a child restraint system to the front

passenger seat, observe the vehicle-speciﬁc infor-

mation (/ page 121).

If it is absolutely necessary to install a child

restraint system on the front passenger seat,

always observe the additional notes.

&

WARNING Risk of injury or death due to

objects between the seat surface and the

child restraint system

Rearward-facing child restraint system on the

front passenger seat

If a rearward-facing child restraint system is ﬁtted

on the front passenger seat, the front passenger

airbag must be disabled. The PASSENGER AIR

BAG OFF indicator lamp must light up continu-

ously (/ page 104).

R

the notes on automatic front passenger airbag

shutoﬀ (/ page 105).

Objects between the seat surface and the

child restraint system could aﬀect the function

of the automatic co-driver airbag shutoﬀ.

R

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

F206 0105 02

Safely transporting children in the vehicle – Important safety notes

123

The front passenger airbag may be deployed

&

WARNING Risk of injury or death due to

WARNING Risk of injury or death when

using a rearward-facing child restraint sys-

tem while the front passenger airbag is

enabled

during an accident. If the front passenger air-

bag is in this status, no rearward-facing child

restraint system may be ﬁtted on the front

passenger seat.

incorrect positioning of the child restraint

system

If you secure a child in a forward-facing child

restraint system on the co-driver seat and you

position the co-driver seat too close to the

dashboard, in the event of an accident, the

child could:

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 oﬀ, the front passenger airbag can

deploy in the event of an accident.

Instead, ﬁt the rearward-facing child restraint

system to a suitable rear seat.

Forward-facing child restraint system on the front

passenger seat

R

come into contact with the vehicle's inte-

If a forward-facing child restraint system is ﬁtted

on the front passenger seat, the front passenger

airbag may be automatically enabled or disabled.

The status of the front passenger airbag depends

on the child restraint system and the stature of

the child.

The PASSENGER AIR BAG OFF indicator lamp is

either lit continuously, or it is not lit

(/ page 104). Always observe the following infor-

mation.

The child could be struck by the airbag.

#

rior if the PASSENGER AIR BAG OFF indi-

cator lamp is lit, for example

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.

R

be struck by the airbag if the PASSENGER

AIR BAG OFF indicator lamp is oﬀ

#

Always move the co-driver seat as far

back as possible. In doing so, 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 shoul-

der belt strap must be routed forwards

and downwards from the seat belt outlet.

If necessary, adjust the seat belt outlet

and the co-driver seat accordingly.

%

The front passenger airbag is enabled

depending on the child restraint system and

the stature of the child. The PASSENGER AIR

BAG OFF indicator lamp does not light up.

F206 0105 02

Safely transporting children in the vehicle – Suitable child restraint systems for the transport of children

124

Identiﬁcation on the child restraint system

The following information, e.g., is available on the

approval label on the child restraint system:

#

Always comply with the child restraint

system manufacturer's installation

instructions.

Suitable child restraint systems for the transport

of children

Information on the advantage of a rearward-facing

child restraint system

R

Approval category

R

Child weight group

Authorisation number

Child restraint size class

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 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.

Notes on vehicles without automatic front

R

passenger airbag shutoﬀ

R

Vehicles without automatic front passenger airbag

shutoﬀ have a special sticker aﬃxed to the side of

the cockpit on the front passenger side

(/ page 121).

Approval categories in accordance with UN-R44

Make sure you observe the following information:

R

Never ﬁt a rearward-facing child restraint sys-

tem to the front passenger seat

R

Always ﬁt a rearward-facing child restraint sys-

tem to a suitable rear seat

R

Notes on rearward-facing and forward-facing

Approval categories for child restraint systems

child restraint systems on the front passenger

Only child restraint systems that meet the follow-

ing UNECE standards are permitted for use in the

vehicle:

seat (/ page 121)

R

UN-R44

R

UN-R129

F206 0105 02

Safely transporting children in the vehicle – Suitable child restraint systems for the transport of children

125

These child restraint systems must also be

secured using Top Tether or support points.

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

Vehicle-speciﬁc: child restraint systems in 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.

Approval categories in accordance with UN-R129

Example of an approval label

R

Universal: child restraint systems in the "Uni-

versal" category are approved for installation

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.

i‑Sizechild restraint systems and booster seats

with backrest: suitable for attachment to i‑Size

mounting brackets. They can be used on the

seats marked i‑U.

Child restraint systems in this category can

also be attached to ISOFIX bars if approved by

the manufacturer of the child restraint system.

i‑Size booster seats with backrest can be used

The identiﬁcation IUF refers to ISOFIX child

restraint systems in the "Universal" category.

F206 0105 02

Safely transporting children in the vehicle – Suitable child restraint systems for the transport of children

126

on seats marked U if the seat is approved for

ﬁed specialist workshop. Mercedes-Benz rec-

ommends that you use a Mercedes-Benz

Service Centre for this purpose.

Type¹

DUO plus

category B2/B3.

Order number²

R

A 000 970 43 02

Belted child restraint systems and belted

booster seats without backrest of the Univer-

salcategory: suitable for attachment to the

seats marked U.

Vehicle-speciﬁc child restraint systems (ISO-

FIX or belted attachment as well as child

booster seats with and without backrest): suit-

able for attachment to the seats marked i‑U or

U if this is approved by the child restraint sys-

tem manufacturer.

Securing with ISOFIX

1 Manufacturer: Britax Römer.

2 With colour code 9H95.

Weight category 0+ (up to 13 kg and up to

approximately 15 months)

Securing with i-Size (R129 child restraint systems)

Weight up to 13 kg, height from 40 to 83 cm, and

aged up to about 15 months

Type¹

BABY SAFE plus

(including base)

Type¹

Baby Safe 3 i-Size

R2

Size category

Approval

E

Size category

Approval

E1 04 301 146

Observe the suitability of vehicle seats

E1*129R03/04*0060

*02

Order number²

B6 6 86 8224

R

Suitability of the seats for attaching ISOFIX

child restraint systems (/ page 128)

1 Manufacturer: Britax Römer.

2 With colour code 9H95.

Order number

A 000 970 68 02

A 000 970 73 02

R

Suitability of seats for securing i‑Size child

restraint systems (/ page 130).

Weight category I (9 to 18 kg and from approx-

imately 9 months to 4 years)

Order number

FlexBase iSense

R

Suitability of seats for attaching belt-secured

child restraint systems (/ page 131)

Type¹

DUO plus

B1

1 Manufacturer: Britax Römer.

Size category

Approval

Overview of recommended child restraint systems

%

Further information on the correct child

restraint system can be obtained at a quali-

E1 04 301 133

F206 0105 02

Safely transporting children in the vehicle – Suitable child restraint systems for the transport of children

Securing with the vehicle seat belt

127

Weight up to 18 kg, height from 61 to 105 cm,

and aged from about 3 months to 4 years

Type¹

KIDFIX M i-Size

Weight category 0 (up to 10 kg and approximately

6 months) and weight category 0+ (up to 13 kg

and approximately 15 months)

Order number

A 000 970 89 02

Type¹

Dualﬁx 3 i-Size

1 Manufacturer: Britax Römer.

Size category

Approval

F2X/R2

Type¹

BABY SAFE plus II

E1 04 301 146

Weight from 15 to 36 kg, height from 100 to

150 cm, and aged from about 3.5 to 12 years

E1*129R03/04*0060

*02

Approval

Type¹

AMG KIDFIX M i-Size

B2

A 000 970 38 02

Order number

A000 970 93 02

A000 970 73 02

Order number²

Size category

Approval

1 Manufacturer: Britax Römer.

2 With colour code 9H95.

Order number

FlexBase iSense

E1*129R03/04*0061

*02

R129 child restraint system (weight up to 13 kg,

height from 40 to 83 cm, and aged up to about

15 months)

1 Manufacturer: Britax Römer.

Order number

A 000 970 91 02

Weight from 15 to 36 kg, height from 100 to

150 cm, and aged from about 3.5 to 12 years

Type¹

1 Manufacturer: Britax Römer.

Baby Safe 3 i-Size

R2

Type¹

Size category

Approval

KIDFIX M i-Size

B2

E1*129R03/04*0060

*02

Size category

Approval

E1*129R03/04*0061

*02

Order number

A 000 970 68 02

1 Manufacturer: Britax Römer.

F206 0105 02

Safely transporting children in the vehicle – Suitable seats for attaching child restraint systems

128

Weight category I (9 to 18 kg and from approx-

imately 9 months to 4 years)

Weight category II/III (15 to 36 kg and from

approximately 3 to 12 years)

R129 child restraint systems (weight from 15 to

36 kg, height from 100 to 150 cm, and aged from

about 3.5 to 12 years)

Type¹

DUO plus

AMG KIDFIX XP

E1 04 301 304

Type¹

AMG KIDFIX M i-Size

B2

Approval

E1 04 301 133

Approval

Size category

Approval

Order number²

A 000 970 43 02

A 000 970 33 02

E1*129R03/04*0061

*02

1 Manufacturer: Britax Römer.

2 With colour code 9H95.

1 Manufacturer: Britax Römer.

2 With colour code 9H95.

Order number

A 000 970 91 02

Weight category II/III (15 to 36 kg and from

approximately 3 to 12 years)

R129 child restraint systems (weight from 15 to

36 kg, height from 100 to 150 cm, and aged from

about 3.5 to 12 years)

1 Manufacturer: Britax Römer.

Type¹

KIDFIX XP

Type¹

KIDFIX M i-Size

B2

Approval

E1 04 301 304

Suitable seats for attaching child restraint sys-

tems

Overview of suitability of the seats for attaching

ISOFIX child restraint systems

Size category

Approval

Order number²

A 000 970 49 02

E1*129R03/04*0061

*02

1 Manufacturer: Britax Römer.

2 With colour code 9H95.

ISOFIX is a standardised securing system for spe-

cially designed child restraint systems.

Order number

A 000 970 89 02

1 Manufacturer: Britax Römer.

®

The symbol indicates seats suitable for

attaching an ISOFIX child restraint system

in accordance with UN R44 (/ page 124).

F206 0105 02

Safely transporting children in the vehicle – Suitable seats for attaching child restraint systems

Weight group 0 (up to 10 kg and up to approx. 6

129

°

ISOFIX child restraint systems can also be

installed on seats with i‑Size markings

(/ page 130).

Size class –

Equipment

Leꢀ/right

months)

rear seat

Size class –

Equipment

Leꢀ/right rear seat

C – ISO/R3

IL (1)

Attach only ISOFIX child restraint systems that

are approved in accordance with UN R44 as per

the following ISOFIX tables.

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 system 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 system manufactur-

er's vehicle model list.

Carry cot

Size class –

Equipment

Leꢀ/right rear seat

(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.

F – ISO/L1

G – ISO/L2

X

X Not suitable for an ISOFIX

child restraint system in this

weight group and/or size class.

Weight group 0+ (up to 13 kg and up to approx.

15 months)

Size class –

Equipment

Leꢀ/right

rear seat

E – ISO/R1

IL

D – ISO/R2, ISO/R2X

F206 0105 02

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130

Weight group 1 (9–18 kg and approx. 9 months to

4 years)

Overview of suitability of the seats for attaching

i‑Size child restraint systems

Size class –

Equipment

Leꢀ/right

rear seat

i‑Size is a standardised securing system for spe-

cially designed child restraint systems.

Size class –

Equipment

Leꢀ/right

rear seat

A – ISO/F3

IUF

°

i‑Size child restraint systems can be

attached to a seat with the i‑Size marking

(/ page 124).

IL Suitable for ISOFIX child restraint systems

according to the table in "Overview of the rec-

ommended child restraint systems", or if the

vehicle and the seat are listed on the child

restraint system manufacturer's vehicle

model list.

D – ISO/R2, ISO/R2X

C – ISO/R3

IL

IL (1)

IUF

Child restraint systems that are approved

in accordance with the following i‑Size

table may be attached.

B – ISO/F2

B1 – ISO/F2X

IUF Suitable for forward-facing ISOFIX child

restraint systems of the "Universal" category

in this weight group.

Leꢀ and right rear seat

i‑Size child restraint systems (ISO/R1,

ISO/R2, ISO/R2X, ISO/R3, ISO/F2,

ISO/F2X, ISO/F3, ISO/B2, ISO/B3)

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.

i-U Suitable for forward-facing and rearward-facing i-Size

child restraint systems in the "Universal" category.

F206 0105 02

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131

Front passenger seat

Leꢀ/right rear seat

U, L

Leꢀ/right rear seat

U, L, B2, B3

i‑Size child restraint systems (ISO/R1,

ISO/R2, ISO/R2X, ISO/R3, ISO/F2,

ISO/F2X, ISO/F3, ISO/B2, ISO/B3)

X

Centre rear seat¹

1 Child restraint systems with a

supporting bracket are not suit-

able for this seat.

Weight category I: 9

to 18 kg

X Not suitable for an i-Size child restraint system in the

"Universal" category.

Leꢀ/right rear seat

U, L

U Suitable for child restraint

systems of the "Universal" cate-

gory in this weight category.

Centre rear seat¹

Overview of the suitability of seats for attaching

belt-secured child restraint systems

Weight category II: 15

to 25 kg

Suitability of seats for attaching belt-secured child

restraint systems

Leꢀ/right rear seat

U, L

Centre rear seat¹

Rear seats

Weight category III:

22 to 36 kg

Weight category 0: to

10 kg

Leꢀ/right rear seat

U, L

Leꢀ/right rear seat

U, L

Centre rear seat¹

UN-R129 child

restraint systems

Weight category 0+:

to 13 kg

F206 0105 02

Safely transporting children in the vehicle – Suitable seats for attaching child restraint systems

systems. If the front passenger seat is occu-

132

L Suitable for semi-universal

child restraint systems accord-

ing to the table in "Recommen-

ded child restraint systems", or

if the vehicle and the seat are

listed in the child restraint sys-

tem manufacturer's vehicle

model list.

Front passenger air-

bag enabled¹

UF, L

U, L

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 104).

Front passenger air-

bag disabled^{1, 2}

Front passenger seat

Weight category II: 15

to 25 kg

Weight category 0: to

10 kg

Front passenger air-

bag enabled¹

UF, L

U, L

B2, B3 Suitable for the installa-

tion of child restraint systems

complying with ISO/B2 and

ISO/B3 child seat cushion test

equipment.

Front passenger air-

bag enabled¹

X

Front passenger air-

bag disabled^{1, 2}

Front passenger air-

bag disabled^{1, 2}

U, L

Weight category III:

22 to 36 kg

Weight category 0+:

to 13 kg

Notes on child restraint systems on the front

passenger seat

Front passenger air-

bag enabled¹

UF, L

U, L

R

If it is absolutely necessary for you to ﬁt a

Front passenger air-

bag enabled¹

X

child restraint system to the front passenger

seat, be sure to observe the information on

child restraint systems on the front passenger

seat (/ page 121).

Front passenger air-

bag disabled^{1, 2}

Front passenger air-

bag disabled^{1, 2}

U, L

UN-R129 child

restraint systems

R

Observe the speciﬁc instructions for the rear-

ward-facing and forward-facing child restraint

Weight category I: 9

to 18 kg

F206 0105 02

Safely transporting children in the vehicle – Securing the child restraint system

133

L Suitable for semi-universal

Securing the child restraint system

Adjusting the seat correctly

Front passenger air-

bag enabled¹

UF, L, B2, B3

U, L, B2, B3

child restraint systems accord-

ing to the table in "Recommen-

ded child restraint systems", or

if the vehicle and the seat are

listed in the child restraint sys-

tem manufacturer's vehicle

model list.

Front passenger air-

bag disabled^{1, 2}

When ﬁtting a child restraint system on the leꢀ or

right rear seat, always observe the following:

#

Make sure that the child's feet do not touch

1 Adjust the seat cushion incli-

nation so that the front edge of

the seat cushion is in the high-

est position and the rear edge

of the seat cushion is in the low-

est position.

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's installation instructions.

UF Suitable for forward-facing

child restraint systems of the

"Universal" category in this

weight category.

2 The vehicle is equipped with

automatic front passenger air-

bag shutoﬀ. The PASSENGER

AIR BAG OFF indicator lamp

must be lit.

B2, B3 Suitable for the installa-

tion of child restraint systems

complying with ISO/B2 and

ISO/B3 child seat cushion test

equipment.

%

Contact with the roof when the head restraint

is fully extended and locked in place will not

result in any restrictions on use.

®° When ﬁtting an ISOFIX/LATCH or

i‑Size child restraint system, also observe the fol-

lowing:

X Not suitable for children in

this weight category.

U Suitable for child restraint

systems of the "Universal" cate-

gory in this weight category.

#

When using a rearward-facing child restraint

system on a rear seat: adjust the front seat so

F206 0105 02

Safely transporting children in the vehicle – Securing the child restraint system

134

that it does not touch the child restraint sys-

tem.

7 When ﬁtting a belt-secured child restraint

system, also observe the following:

direction. Where possible, adjust the seat

cushion inclination accordingly.

#

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 ﬂat as possible against the backrest of the

vehicle seat. Aꢀer 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 ﬁtted facing the wrong

direction. Where possible, adjust the seat

cushion inclination accordingly.

Adjust the vehicle head restraints so that the

child restraint system is not put under strain

by the head restraint.

Make sure that the child's feet do not touch

the front seat. If necessary, move the front

seat slightly forwards.

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 ﬂat as possible against the backrest of the

vehicle seat. Aꢀer the child restraint system

has been removed, replace the vehicle head

restraint immediately and adjust correctly.

7 Depending on the vehicle equipment,

always observe the following when ﬁtting a belt-

secured child restraint system on the front

passenger seat:

#

Observe the notes on rearward-facing and

forward-facing child restraint systems on the

front passenger seat (/ page 121).

#

When using a forward-facing child restraint

#

system integrated child seat belt: remove the

head restraint from the respective seat, if pos-

sible. Aꢀer the child restraint system has been

removed, immediately replace the head

restraint 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.

Adjust the vehicle head restraints so that the

child restraint system is not put under strain

by the head restraint.

#

The child restraint system must not be put

under strain between the roof and the seat

#

The backrest of the forward-facing child

restraint system must, as far as possible, be

cushion and/or be ﬁtted facing the wrong

F206 0105 02

Safely transporting children in the vehicle – Securing the child restraint system

135

#

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 ﬁtted 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

position if possible. 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.

Adjust the seat cushion inclination so that the

#

Make sure that the rear bench seat, the

rear seat and the seat backrest are

engaged before every trip.

front edge of the seat cushion is in the highest

position and the rear edge of the seat cushion

is in the lowest position.

#

If the rear seat backrest is not engaged and

Set the seat backrest to the most vertical

position possible.

locked in place, the red lock veriﬁcation indicator

will be visible.

Fitting an ISOFIX or i-Size child restraint system

&

WARNING Risk of injury or death if the

permissible gross mass of the child and

child restraint system together is excee-

ded.

#

&

WARNING Risk of accident if the rear

bench seat, rear seat and seat backrest

are not engaged

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.

The rear bench seat, rear seat and seat back-

rest may fold forwards, even while the vehicle

is in motion.

R

As a result, the vehicle occupant will be

#

If the child is secured in an ISOFIX or i-

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.

Size child restraint system with integra-

ted seat belts, the total mass of the child

and child restraint system must not

exceed 33 kg.

R

Objects or loads in the boot or load com-

partment cannot be restrained by the seat

backrest.

#

Fully retract the seat cushion length adjust-

ment.

F206 0105 02

Safely transporting children in the vehicle – Securing the child restraint system

136

Always comply with the information about the

weight of the child restraint system:

*

NOTE Damage to the seat belt for the

centre seat during installation of the child

restraint system

R

in the manufacturer's installation and operat-

ing instructions for the child restraint system

used

#

Make sure that the seat belt is not trap-

ped.

R

on a label on the child restraint system, if

present

#

Fold covers 1 or 2 rearward.

Regularly check that the permissible gross weight

of the child and child restraint system is still com-

plied with.

Attach the ISOFIX/LATCH or i‑Size child

restraint system to both securing rings in the

vehicle.

When ﬁtting a child restraint system, observe the

following:

Fastening a Top Tether

O

Always observe the correct use of the seats

and consider their suitability for attaching a

child restraint system.

® LATCH-type (ISOFIX) securing rings

(/ page 128)

&

WARNING Risk of injury or death if the

rear seat backrests are not locked aꢀer

Top Tether belts are ﬁtted

1

2

LATCH-type (ISOFIX) securing rings

i‑Size securing rings

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.

Before every journey, make sure that the ISOFIX/

LATCH child restraint system or the i‑Size child

restraint system is engaged correctly in both

securing rings in the vehicle.

or

° i‑Size securing rings (/ page 130)

F206 0105 02

Safely transporting children in the vehicle – Securing the child restraint system

137

#

Always lock rear seat backrests aꢀer ﬁt-

ting Top Tether belts.

Observe the lock veriﬁcation indicator.

If the rear seat backrest is not engaged and

locked in place, the red lock veriﬁcation 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 connec-

tion between the child restraint system attached

with ISOFIX or i‑Size and the vehicle.

#

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 manufactur-

er's installation instructions.

Fold down cover 2 of Top Tether anchorage

3.

#

If necessary, slide head restraint 1 upwards

(/ page 184).

#

Fold up 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 installa-

tion instructions.

If necessary, slide head restraint 1 down-

wards (/ page 184). Make sure that you do

not interfere with the correct routing of Top

Tether belt 4.

F206 0105 02

Safely transporting children in the vehicle

138

#

Securing the child restraint system with the seat

belt

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 the

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 from the seat belt outlet and, where

possible, downwards to the child restraint sys-

tem.

Child safety locks

Activating or deactivating the child safety lock for

the rear doors

&

WARNING Risk of accident if the rear

bench seat, rear seat and seat backrest

are not engaged

&

WARNING Accident– and risk of injury

with unsupervised children in the vehicle

The rear bench seat, rear seat and seat back-

rest may fold forwards, even while the vehicle

is in motion.

If you leave children unattended in the vehicle,

they can in particular

R

Open doors and thereby endanger other

persons or road users.

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 pro-

tect as intended and could cause addi-

tional injury.

R

get out of the car and are hit by traﬃc.

R

Operate vehicle equipment and become

trapped, forexample.

R

Objects or loads in the boot or load com-

In addition, the children could also set the

vehicle in motion, for exampleby:

partment cannot be restrained by the seat

backrest.

#

When ﬁtting on the rear seat: also secure Top

Tether if present.

When ﬁtting on the front passenger seat: if

necessary, adjust the seat belt outlet and the

front passenger seat accordingly.

R

releasing the parking brake.

#

Make sure that the rear bench seat, the

R

change the gearbox setting.

rear seat and the seat backrest are

engaged before every trip.

R

start the vehicle.

#

Never leave children unattended in the

vehicle.

If the rear seat backrest is not engaged and

locked in place, the red lock veriﬁcation indicator

will be visible.

F206 0105 02

Safely transporting children in the vehicle

139

#

When leaving the vehicle, always take the

SmartKey with you and lock the vehicle.

Keep the key out of reach of children.

Always activate the installed child safety

locks if children are travelling in the vehi-

cle.

Never leave children unattended in the

vehicle.

#

&

WARNING Risk of fatal injury due to expo-

sure to extreme heat or cold in the vehicle

When leaving the vehicle, always take the

key with you and lock 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.

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.

#

Never leave persons, particularly chil-

dren, unattended in the vehicle.

&

WARNING Risk of accident and injury due

to children leꢀ unattended in the vehicle

#

Press the lever in direction 1 (activate) or 2

If children are travelling in the vehicle, they

could, in particular:

(deactivate).

Check the functionality of the child lock.

R

open doors, thereby endangering other

persons or road users.

R

get out and be struck by oncoming traﬃc.

R

operate vehicle equipment and become

trapped, for example.

F206 0105 02

Safely transporting children in the vehicle

140

Activating and deactivating the child safety lock

for the rear side windows

#

Keep the key out of reach of children.

Always activate the installed child safety

locks if children are travelling in the vehi-

cle.

Never leave children unattended in the

vehicle.

&

WARNING Risk of fatal injury due to expo-

sure to extreme heat or cold in the vehicle

&

WARNING Accident– and risk of injury

with unsupervised children 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.

If you leave children unattended in the vehicle,

they can in particular

When leaving the vehicle, always take the

key with you and lock the vehicle.

R

Open doors and thereby endanger other

persons or road users.

#

Never leave persons, particularly chil-

dren, unattended in the vehicle.

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.

R

get out of the car and are hit by traﬃc.

R

Operate vehicle equipment and become

trapped, forexample.

&

WARNING Risk of accident and injury due

to children leꢀ unattended in the vehicle

In addition, the children could also set the

vehicle in motion, for exampleby:

If children are travelling in the vehicle, they

could, in particular:

R

releasing the parking brake.

R

open doors, thereby endangering other

persons or road users.

get out and be struck by oncoming traﬃc.

R

change the gearbox setting.

start the vehicle.

R

operate vehicle equipment and become

trapped, for example.

#

Never leave children unattended in the

vehicle.

#

When leaving the vehicle, always take the

SmartKey with you and lock the vehicle.

F206 0105 02

Safely transporting children in the vehicle

141

Activating or deactivating the occupant presence

reminder in the multimedia system

Occupant presence reminder

Function of the occupant presence reminder

Multimedia system:

The occupant presence reminder can help to

remind you about a child who may have been for-

gotten in the rear compartment of the vehicle. It

activates and deactivates automatically when the

rear door is open for an extended period of time

and a child, which the system presumes to be

present, could enter or exit the vehicle.

4

5

©

Settings

Vehicle

5

Occupant protection

#

Activate or deactivate the function.

When the vehicle is switched oﬀ, the Do not

leave persons or animals in the vehicle message

appears on the driver's display if the system was

already automatically activated.

You can permanently deactivate the function in

the multimedia system (/ page 141). When the

system is deactivated, the p indicator lamp in

the driver's display lights up.

#

To activate/deactivate: press button 2.

The rear side window can be opened or closed

in the following cases:

R

The indicator lamp 1 is lit: via the switch

on the driver's door

R

The indicator lamp 1 is oﬀ: via the switch

on the corresponding rear door or driver's

door

F206 0105 02

Safely transporting children in the vehicle for Your Mercedes C Class 4 Door 2023

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