Get Occupant safety -> Brief overview of most important points Guide for Mercedes C Class 4 Door 2023

Occupant safety – Brief overview of most important points

The information is structured as follows:

Deﬁning generic terms clearly

Brief overview of most important points

Basic information

The most important information in brief: in this In this Owner's Manual, the following generic

chapter, you are provided with an overview of

the relationship between the restraint system

and the correct behaviour of all vehicle occu-

pants.

terms are used:

Make sure that the following prerequisites in par-

ticular have been met so that the components of

the restraint system are able to provide the inten-

ded level of protection:

Occupant safety: comprises the components

and system functions which help to minimise,

as much as possible, the stresses on and con-

sequences for vehicle occupants during an

accident.

Speciﬁc information: in further sections of the

chapter "Occupant safety", you can ﬁnd spe-

ciﬁc information on the equipment and func-

tions of the restraint system.

Keyword directory: you can also ﬁnd certain

subjects in this Owner's Manual using the key-

word directory.

Sit correctly (/ page 100).

Fasten the seat belt correctly (/ page 101).

Restraint system: comprises those compo-

nents which, along with the vehicle structure,

help prevent vehicle occupants from poten-

tially coming into contact with parts of the

vehicle interior. The seat belts and airbags, for

example, are components of the restraint sys-

tem.

Function of the ü seat belt warning

lamp (/ page 103).

Function of the rear seat belt status dis-

play (/ page 103).

Information on the following subjects, among oth-

ers, are not provided in the chapter "Occupant

safety":

The 6 restraint system warning lamp is not

lit up aꢀer the self-test (/ page 102).

Child restraint system: you can ﬁnd all infor-

mation on this subject in the chapter "Children

in the vehicle" (/ page 117).

The PASSENGER AIR BAG indicator lamps dis-

Children in the vehicle (/ page 117)

play the correct status of the front passenger

airbag (/ page 104).

Driving and driving safety systems

(/ page 334)

Be diligent

For clear understanding

For the components of the restraint system to

provide the intended level of protection, it is

essential that your posture is correct and that the

seat belt is correctly fastened.

Stowage areas (/ page 196)

The chapter "Occupant safety" includes informa-

tion on equipment, functions and behaviours that

contribute directly to safety of vehicle occupants.

F206 0105 02

Occupant safety – Brief overview of most important points

100

Bear in mind that negligence when adjusting your

sitting position and fastening the seat belt may

have serious consequences. Be diligent and make

sure that all vehicle occupants are sitting cor-

rectly and have fastened their seat belts properly

before starting every journey (/ page 100).

Keep your distance from the airbags, espe-

cially the front airbags. Set the driver's seat

and front passenger seat as far back as possi-

ble while making sure the seat belt is fastened

correctly.

If persons are sitting on the rear seats, vehicle

occupants should maintain an suﬃcient dis-

tance to the parts of the vehicle interior in

front of them.

Make sure there are no people, animals or

objects between the vehicle occupants and an

airbag.

If you are the driver, observe the following

information on the correct position of the driv-

er's seat (/ page 174).

WARNING Risk of injury or death due to

an incorrect seat position

If you deviate from the correct seat position,

the airbag cannot provide its intended protec-

tive function.

Each vehicle occupant must make sure of the

following.

Information on the correct seat position

Put the seat in the correct position.

The seat position must be correct in order for the

components of the restraint system to provide the

intended level of protection.

The seat position inﬂuences both the protection

provided by the seat belt and the additional pro-

tection provided by the airbag.

A correct seat position in which the seat is nearly

perfectly upright and a correctly fastened seat

belt reduce the risks posed by the airbag when it

is deployed.

Keep space considerations in mind when choos-

ing a seat. With the seat in the correct, nearly

upright position, your head should not touch the

roof.

Fasten seat belts correctly. Pregnant

women must take particular care to

ensure that the lap belt never lies across

the abdomen.

Observe the following information.

In order for the restraint system to provide the

intended level of protection, observe the following

information:

Only hold the steering wheel by the steering

wheel rim. This allows the driver's airbag to

fully deploy.

Assume a nearly upright sitting posture, with

your buttocks positioned as far back as possi-

ble in the gap between the seat cushion and

the seat backrest.

Before starting your journey, adjust your seat

correctly (/ page 174).

When doing so, make sure you are able to fas-

ten your seat belt correctly. The shoulder belt

strap must be routed forward from the seat

belt outlet over the centre of your shoulder.

Your back must lie as ﬂatly and as ﬁrmly as

possible against the seat backrest.

F206 0105 02

Occupant safety – Brief overview of most important points

101

While driving, do not lean forward and do not

lean against the door or side window. You may

otherwise be in the deployment area of the

airbags.

Sit with their feet resting on the ﬂoor, if possi-

ble. Your thighs are slightly supported by the

seat cushion

Do not put your feet on the cockpit, for exam-

ple. Your feet may otherwise be in the deploy-

ment area of the airbag.

The shoulder belt strap must be routed

forward from the seat belt outlet over the

centre of your shoulder.

The shoulder belt strap should neither touch

your neck nor be routed under your arm or

behind your back.

The lap belt must be routed as low down

across the hips as possible.

In addition, push the lap belt down as far as

possible across your hips and pull tight with

the shoulder belt strap. Never route the lap

belt across your abdomen.

Pregnant women must also take particular

care with this.

Aꢀer being tightened, the shoulder belt strap

and lap belt must ﬁt snugly against the body.

Avoid wearing bulky clothing, e.g. a winter

coat.

In addition, an incorrectly fastened seat belt

can also cause injuries, for example, in the

event of an accident or when braking or

changing direction suddenly.

Always ensure that all vehicle occupants

have their seat belts fastened correctly

and are sitting properly.

WARNING Risk of injury or death when

additional restraint systems are not used

for persons with a smaller stature

Fasten the seat belt correctly (/ page 101).

Persons under 1.50 m tall cannot wear the

seat belt correctly without a suitable addi-

tional restraint system.

Notes on wearing the seat belt correctly

Always fasten your seat belt correctly before

starting a journey. A seat belt can only provide

the best level of protection if it is worn correctly.

Always secure persons under 1.50 m tall

in a suitable restraint system.

Observe the following information on the correct

seat position and posture (/ page 100).

WARNING Risk of injury or death due to

incorrectly fastened seat belt

Never route the seat belt across sharp, poin-

ted, abrasive or fragile objects.

Only one person should use each seat belt at

any one time.

Each vehicle occupant must observe the following

notes in particular:

If the seat belt is not worn correctly, it cannot

perform its intended protective function.

The seat belt must not be twisted.

F206 0105 02

Occupant safety – Brief overview of most important points

102

Never secure objects with a seat belt if the

seat belt is also being used by one of the vehi-

cle's occupants.

Also ensure that no objects, e.g. a cushion,

are ever placed between a person and the

seat.

NOTE Deployment of components of the

restraint system when the front passenger

seat is unoccupied and a seat belt is

buckled

When the front passenger seat is unoccupied

and the seat belt tongue of the seat belt is

engaged in the seat belt buckle, components

of the restraint system may deploy unnecessa-

rily on the front passenger side, e.g. the seat

belt tensioner.

If you are driving with a child in the vehicle,

observe the information in the chapter "Children

in the vehicle" (/ page 117)

Observe the instructions for loading the vehicle

when securing objects, luggage or loads

(/ page 196).

Only buckle the seat belts as intended.

Function of the restraint system warning lamp

Fastening and adjusting seat belts

When the vehicle is switched on, a self-test is per-

formed, during which the 6 restraint system

warning lamp lights up. It goes out no later than a

few seconds aꢀer the vehicle is started. The com-

ponents of the restraint system are then func-

tional.

Always engage seat belt tongue 1 of the seat

belt into seat belt buckle 2 of the corre-

sponding seat.

To adjust the seat belt height: press button 3

on the seat belt outlet and slide the seat belt

outlet to the desired position.

To engage the seat belt outlet: release button

3 and ensure that the seat belt outlet

engages.

If the seat belt is pulled quickly or sharply, the

seat belt retractor locks. The seat belt strap can-

not be pulled out any further.

F206 0105 02

Occupant safety – Brief overview of most important points

In addition, a warning tone may sound.

103

A malfunction has occurred in the restraint sys-

tem if:

DANGER Risk of fatal injury due to mal-

As soon as the driver and front passenger fasten

their seat belts, the seat belt warning goes out.

functioning automatic high-voltage emer-

the 6 restraint system warning lamp does

gency shutoﬀ

not light up when the vehicle is switched on

In the event of an accident, the high-voltage

on-board electrical system may not be deacti-

vated as intended.

You may receive an electric shock if you touch

the damaged components of the high-voltage

on-board electrical system.

the 6 restraint system warning lamp lights

Function of the rear seat belt status display

up continuously or repeatedly during a journey

The rear seat belt status display in the driver's dis-

play is a reminder that all vehicle occupants must

wear their seat belts correctly.

If components of the restraint system have been

deployed, the 6 restraint system warning lamp

lights up continuously.

In addition, a warning tone may sound.

Have the automatic high-voltage emer-

If a person unfastens a seat belt in the rear

passenger compartment while the vehicle is

motion, the rear seat belt status display appears

again.

WARNING Risk of injury due to malfunc-

tions in the restraint system

gency shutoﬀ checked and repaired

immediately at a qualiﬁed specialist

workshop.

Components in the restraint system may be

activated unintentionally or not deploy as

intended in an accident.

Aꢀer an accident, switch oﬀ the vehicle

Display in the driver's display

immediately.

Every time the vehicle is switched on, the rear

seat belt status display informs you for a certain

amount of time which rear seat belt is not fas-

tened.

Have the restraint system checked and

Mercedes-Benz recommends that you have the

vehicle towed to a qualiﬁed specialist workshop.

repaired immediately at a qualiﬁed spe-

cialist workshop.

Plug-in hybrid vehicles: if the restraint system is

malfunctioning, the automatic high voltage emer-

gency shutoﬀ may not function.

Function of the seat belt warning lamp

The ü seat belt warning lamp in the driver's

display is a reminder that all vehicle occupants

must wear their seat belts correctly.

F206 0105 02

Occupant safety – Brief overview of most important points

104

Function of the PASSENGER AIR BAG indicator

lamps (front passenger airbag)

If the front passenger seat is occupied or a child

restraint system is ﬁtted on the front passenger

seat, you must make sure both before, and also

during the journey, that the status of the front

passenger airbag is correct for the situation.

WARNING Risk of potentially fatal injuries

due to objects trapped under the front

passenger seat

Objects trapped under the front passenger

seat may interfere with the function of the

automatic front passenger airbag shutoﬀ or

damage the system.

You can determine the status of the rear seat belt

by the colour of the seat symbol in the driver's

display as follows:

Grey: the rear seat belt is not fastened.

Green: the seat belt tongue of a rear seat belt

is engaged in the seat belt buckle of the dis-

played seat.

Red: the person in the rear seat has unfas-

tened their seatbelt.

Do not stow any objects under the front

passenger seat.

When the front passenger seat is occu-

pied, ensure that no objects have

become trapped beneath the front

passenger seat.

Vehicles without automatic front passenger airbag

shutoﬀ have a special sticker aﬃxed to the side of

the cockpit on the front passenger side

(/ page 124).

Self-test: when the vehicle is switched on, both

the PASSENGER AIR BAG ON and OFF indicator

lamps light up simultaneously for several seconds.

The PASSENGER AIR BAG indicator lamps display

the status of the front passenger airbag.

F206 0105 02

Occupant safety – Brief overview of most important points

105

Aꢀer the self-test, you can determine the status of

If you are driving with a child in the vehicle,

Both before and during the journey,

ensure that the status of the front

passenger airbag is correct.

the front passenger airbag as follows:

observe the information in the chapter "Chil-

dren in the vehicle" (/ page 117)

Front passenger airbag disabled: PASSENGER

AIR BAG OFF lights up continuously.

WARNING Risk of injury or death due to a

disabled front passenger airbag

Malfunction of the automatic front passenger air-

bag shutoﬀ

The PASSENGER AIR BAG OFF indicator lamp and

the 6 restraint system indicator lamp light up

simultaneously.

In this case, no one may use the front passenger

seat and no child restraint system may be ﬁtted

on the front passenger seat.

Have the automatic front passenger airbag shutoﬀ

checked and repaired immediately at a qualiﬁed

specialist workshop.

The front passenger airbag will not be

deployed in the event of an accident. If

PASSENGER AIR BAG OFF is lit, no one may

use the front passenger seat.

If a rearward-facing child restraint system is

ﬁtted on the front passenger seat,

PASSENGER AIR BAG OFF must be lit continu-

ously.

The front passenger airbag is disabled when

the PASSENGER AIR BAG OFF indicator lamp

is lit.

A person in the front passenger seat could

then, for example, come into contact with the

vehicle interior, especially if the person is sit-

ting too close to the cockpit.

Front passenger airbag enabled: PASSENGER

If the front passenger seat is occupied, always

ensure that:

AIR BAG ON lights up for up to 60 seconds or

until both the PASSENGER AIR BAG ON and

OFF indicator lamps go out.

the classiﬁcation of the person in the front

passenger seat is correct and the front

passenger airbag is enabled or disabled in

accordance with the person in the front

passenger seat.

the front passenger seat has been moved

as far back as possible.

Disabling or enabling the front passenger airbag

The front passenger airbag may be deployed

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.

The automatic front passenger airbag shutoﬀ can

disable or enable the front passenger airbag

according to the situation.

This happens automatically as a result of the clas-

siﬁcation of the person or child restraint system

on the front passenger seat.

the person is seated correctly.

F206 0105 02

Occupant safety – Information on the automatic functions of the restraint system

106

You cannot manually disable or enable the front

passenger airbag.

Information on the automatic functions of the

restraint system

Function of the automatic front passenger airbag

shutoﬀ

Information on the child restraint system

When ﬁtting a child restraint system, observe the

notes in "Children in the vehicle" (/ page 117).

A person on the front passenger seat must

observe the following information:

Sit correctly (/ page 100).

Notes on the child restraint system on the front

passenger seat

Fasten the seat belt correctly (/ page 101).

The automatic front passenger airbag shutoﬀ can

disable or enable the front passenger airbag

according to the situation.

WARNING Risk of injury or death due to

an enabled co-driver airbag

If the co-driver airbag is enabled, a child on

the co-driver seat may be struck by the co-

driver airbag during an accident.

Make sure you observe the following information:

The status of the front passenger airbag, see

"Function of the PASSENGER AIR BAG indica-

Status of the front passenger airbag in relation to

the stature of the person:

NEVER use a rearward-facing child

tor lamps"(/ page 104).

restraint system on a seat with an ENA-

BLED FRONT AIRBAG. DEATH or SERI-

OUS INJURY to the CHILD can occur.

When ﬁtting a child restraint system to the

Front passenger airbag disabled: PASSENGER

AIR BAG OFF lights up continuously.

front passenger seat, observe the vehicle-spe-

ciﬁc information (/ page 121).

The front passenger airbag will not be

deployed in the event of an accident. If

PASSENGER AIR BAG OFF is lit, no one may

use the front passenger seat.

Also pay particular attention to the notes on rear-

ward-facing or forward-facing child restraint sys-

tems on the front passenger seat (/ page 121).

F206 0105 02

Occupant safety -> Brief overview of most important points for Your Mercedes C Class 4 Door 2023

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