Get Occupant safety -> Airbags Guide for Mercedes C Class 4 Door Fourth Generation (2014-2021)

Occupant safety 41

Activating/deactivating seat belt adjustment

via the multimedia system

Airbags

Overview of airbags

Multimedia system:

4

5

Vehicle

î Vehicle settings

5

Belt adjustment

#

Activate O or deactivate ª the function.

Seat belt warning function for the driver and

front passenger

When the ignition 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.

The ü seat belt warning lamp in the instru‐

ment display is a reminder that all vehicle occu‐

pants must wear their seat belts correctly.

1

2

3

4

5

Knee airbag

In addition, a warning tone may sound.

As soon as the driver and front passenger fasten

their seat belts, the seat belt warning goes out.

You can immediately dismiss the rear seat belt

status display using the back button on the left-

hand side of the steering wheel (/ page 245).

If a vehicle occupant unfastens a seat belt in the

rear while the vehicle is motion, the rear seat

belt status display appears again.

In addition, a warning tone may sound. In this

case, the rear seat belt status display cannot be

hidden using the back button on the left-hand

side of the steering wheel.

Driver's airbag

Front passenger airbag

Window airbag

Side airbag

Function of the rear seat belt status display

The installation location of an airbag is identified

by the AIRBAG symbol.

When enabled, an airbag can provide additional

protection for the respective vehicle occupant.

The rear seat belt status display is only available

for certain countries.

42 Occupant safety

Potential protection provided by each airbag:

FRONT AIRBAG in front of it, this can result in

DEATH or SERIOUS INJURY to the child.

NOTE Important points to remember if

the front passenger seat is unoccupied

*

R

Knee airbag: thigh, knee and lower leg

R

Driver's airbag, front passenger airbag: head

In an accident, the components of the

restraint system may deploy unnecessarily

on the front passenger side if:

When fitting a child restraint system to the front

passenger seat, observe the vehicle-specific

information (/ page 65). Also, always observe

the notes on rearward-facing or forward-facing

child restraint systems on the front passenger

seat.

and ribcage

R

Window airbag: head

Side airbag: ribcage, also pelvis for front seat

occupants

R

There are heavy objects on the front

passenger seat.

R

The seat belt tongue is engaged in the

seat belt buckle of the front passenger

seat and the front passenger seat is

unoccupied.

NOTE Mercedes-AMG vehicles

*

Information on automatic front passenger

airbag shutoff

#

Observe the notes in the Supplement.

You could otherwise fail to recognise

dangers.

The front passenger airbag can only be deployed

in an accident if the PASSENGER AIR BAG OFF

indicator lamp is off. If the front passenger seat

is occupied, make sure, both before and during

the journey, that the status of the front

passenger airbag is correct (/ page 46).

#

Stow objects in a suitable place.

Only one person should use each seat

belt at any one time.

&

WARNING Risk of injury or fatal injuries

if the front passenger airbag is enabled

Depending on the detected accident situation,

the window airbag on the front passenger side

may deploy. The airbag is deployed regardless of

whether the front passenger seat is occupied.

If the front passenger airbag is enabled, a

child on the front passenger seat may be

struck by the front passenger airbag during

an accident.

NEVER use a rearward facing child restraint

system on a seat protected by an ENABLED

Occupant safety 43

Protection provided by the airbags

R

To avoid the risks resulting from the deployment

of an airbag, each vehicle occupant must

Always stow and secure objects correctly.

Depending on the accident situation, an airbag

may supplement the protection provided by a

correctly fastened seat belt.

Objects in the vehicle interior may prevent an

airbag from functioning correctly. Each vehicle

occupant must always make sure of the follow‐

ing in particular:

observe the following information in particular:

R

Before starting your journey, adjust your seat

correctly; the driver's seat and front

passenger seat should be moved as far back

as possible.

&

WARNING Risk of injury or death due to

an incorrect seat position

R

There are no people, animals or objects

between the vehicle occupants and an air‐

bag.

There are no objects between the seat, door

and door pillar (B-pillar).

There are no hard objects, e.g. coat hangers,

hanging on the grab handles or coat hooks.

There are no accessory parts, such as mobile

navigation devices, mobile phones or cup

holders, attached to the vehicle within the

deployment area of an airbag, e.g. on the

cockpit, on the door, on the side window or

on the side wall trim.

In addition, no connecting cables, tensioning

straps or retaining straps must be routed or

attached to the vehicle within the deploy‐

ment area of an airbag. Always comply with

the accessory manufacturer's installation

When doing so, always observe the informa‐

tion on the correct driver's seat position

(/ page 95).

If you deviate from the correct seat position,

the airbag cannot perform its intended pro‐

tective function.

Each vehicle occupant must make sure of the

following:

R

Only hold the steering wheel by the steering

R

wheel rim. This allows the airbag to be fully

deployed.

R

Fasten seat belts correctly. Pregnant

R

Always lean against the seat backrest when

women must take particular care to

ensure that the lap belt never lies across

the abdomen.

the vehicle is in motion. Do not lean forwards

or against the door or side window. You may

otherwise be in the deployment area of the

airbags.

R

Adopt the correct seat position and keep

as far away as possible from the airbags.

R

Always keep your feet on the floor. Do not

R

Observe the following information.

put your feet on the cockpit, for example.

Your feet may otherwise be in the deploy‐

ment area of the airbag.

#

Always make sure that there are no

objects between the airbag and vehicle

occupant.

R

If children are travelling in the vehicle,

observe the additional notes (/ page 51).

44 Occupant safety

instructions and, in particular, the notes on

suitable places for installation.

There are no heavy, sharp-edged or fragile

objects in the pockets of your clothing. Store

such objects in a suitable place.

#

Always have work on the doors or door

trim carried out at a qualified specialist

workshop.

&

WARNING Risk of injury or death due to

the use of unsuitable seat covers

R

Due to unsuitable seat covers, the airbags

cannot protect vehicle occupants as inten‐

ded.

In addition, the operation of the automatic

front passenger airbag shutoff could be

restricted.

&

WARNING Risk of injury due to deployed

airbag

Limited protection provided by airbags

A deployed airbag no longer offers any pro‐

tection.

&

WARNING Risk of injury due to modifi‐

cations to the cover of an airbag

#

Have the vehicle towed to a qualified

specialist workshop in order to have the

deployed airbag replaced.

You should only use seat covers that

have been approved for the correspond‐

ing seats by Mercedes-Benz.

If you modify the cover of an airbag or affix

objects such as stickers to it, the airbag may

no longer function correctly.

Have deployed airbags replaced immediately.

&

WARNING Risk of injury due to malfunc‐

tioning sensors in the door

#

Never modify the cover of an airbag and

do not affix objects to it.

Status of the front passenger front airbag

The function of the airbags can be impaired

due to modifications or incorrect work per‐

formed on the doors or door trim, or if the

doors are damaged.

Function of the automatic front passenger

airbag shutoff

The automatic front passenger front airbag shut‐

off is able to detect whether the front passenger

seat is occupied by a person or a child restraint

system. The front passenger airbag is enabled or

disabled accordingly.

The installation location of an airbag is identified

by the AIRBAG symbol (/ page 41).

#

Never modify the doors or parts of the

doors.

Occupant safety 45

When fitting a child restraint system to the front

passenger seat, always make sure of the follow‐

ing:

A person on the front passenger seat must

&

WARNING Risk of injury or death due to

objects between the seat surface and

the child restraint system

observe the following information:

R

Fasten seat belts correctly (/ page 37).

R

Ensure that the child restraint system is posi‐

tioned correctly (/ page 55).

R

Sit in an almost upright seat position with

their back against the seat backrest.

Objects between the sitting surface and the

child restraint system could affect the func‐

tion of the automatic front passenger airbag

shutoff.

R

Always comply with the child restraint sys‐

tem manufacturer's installation instructions.

R

Sit with their feet resting on the floor, if pos‐

sible.

R

Never place objects (e.g. cushions) under or

behind the child restraint system.

#

Do not place any objects between the

sitting surface and the child restraint

system.

The entire base of the child restraint

system must always rest on the sitting

surface of the front passenger seat.

The front passenger airbag may otherwise be

disabled by mistake, for example, in the follow‐

ing situations:

R

Fully retract the seat cushion length adjust‐

ment.

The entire base of the child restraint system

must always rest on the sitting surface of the

front passenger seat.

#

R

The front passenger transfers their weight by

supporting themselves on a vehicle armrest.

R

The front passenger sits in such a way that

#

The backrest of the forward-facing child

their weight is raised from the sitting sur‐

face.

R

restraint system must, as far as possi‐

ble, be resting on the seat backrest of

the front passenger seat.

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.

The child restraint system must not touch the

roof or be put under strain by the head

restraints. Adjust the seat backrest inclina‐

tion and the head restraint setting accord‐

ingly.

&

WARNING Risk of injury or death due to

a disabled front passenger airbag

#

Always comply with the child restraint

system manufacturer's installation

instructions.

The front passenger airbag is disabled when

the PASSENGER AIR BAG OFF indicator lamp

is lit.

46 Occupant safety

Always observe the notes on the function of the

PASSENGER AIR BAG indicator lamps

(/ page 46).

side of the cockpit on the front passenger side

A person in the front passenger seat could

then, for example, come into contact with

the vehicle interior, especially if the person is

sitting too close to the cockpit.

If the front passenger seat is occupied,

always ensure that:

(/ page 65).

Self-test of automatic front passenger airbag

shutoff

When the ignition is switched on, a self-test is

performed during which the two PASSENGER

AIR BAG ON and OFF indicator lamps light up

simultaneously.

The status of the front passenger airbag is dis‐

played via the PASSENGER AIR BAG indicator

lamps after the self-test:

Function of the PASSENGER AIR BAG indica‐

tor lamps

R

the classification of the person in the

front passenger seat is correct and the

front passenger airbag is enabled or disa‐

bled in accordance with the person in the

front passenger seat.

R

the front passenger seat has been moved

as far back as possible.

ON is lit: the front passenger airbag may

deploy during an accident.

R

the person is seated correctly.

The indicator lamp goes out after approx‐

imately 60 seconds.

ON and OFF are not lit: the front passenger

airbag may deploy during an accident.

OFF is lit: the front passenger airbag is disa‐

#

Both before and during the journey,

ensure that the status of the front

passenger airbag is correct.

R

If the front passenger seat is occupied, the clas‐

sification of the person or child restraint system

on the front passenger seat takes place after the

front passenger airbag shutoff self-test. The

PASSENGER AIR BAG indicator lamps display the

status of the front passenger airbag.

bled. It will then not be deployed in the event

of an accident.

Vehicles without automatic front passenger air‐

bag shutoff have a special sticker affixed to the

If the PASSENGER AIR BAG ON indicator lamp is

off, only the PASSENGER AIR BAG OFF indicator

lamp shows the status of the front passenger

Occupant safety 47

airbag. The PASSENGER AIR BAG OFF indicator

lamp may be lit continuously or be off.

not fit the rearward-facing child restraint system

to the front passenger seat.

Instead, fit the rearward-facing child restraint

system to a suitable rear seat.

After fitting a forward-facing child restraint

system to the front passenger seat: depend‐

ing on the child restraint system and the stature

of the child, PASSENGER AIR BAG OFF may be lit

continuously or be off. Always observe the fol‐

lowing information.

&

WARNING Risk of injury or death when

using a rearward-facing child restraint

system while the front passenger airbag

is enabled

If the PASSENGER AIR BAG OFF indicator lamp

and the 6 restraint system warning lamp

light up simultaneously, the front passenger seat

may not be used. Also in this case, do not fit a

child restraint system to the front passenger

seat. Have the automatic front passenger airbag

shutoff checked and repaired immediately at a

qualified specialist workshop.

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.

The child could be struck by the airbag.

Status display

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.

&

WARNING Risk of injury or death due to

incorrect positioning of the forward-

facing child restraint system

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.

After fitting a rearward-facing child restraint

system to the front passenger seat:

PASSENGER AIR BAG OFF must be lit continu‐

ously.

If you secure a child in a forward-facing child

restraint system on the front passenger seat

that is positioned too close to the cockpit, in

the event of an accident, the child could:

R

come into contact with the vehicle inte‐

When fitting a child restraint system to the front

passenger seat, observe the vehicle-specific

information (/ page 65).

Depending on the child restraint system and the

stature of the child, the PASSENGER AIR BAG

OFF indicator lamp may be off. In this case, do

rior if the PASSENGER AIR BAG OFF indi‐

cator lamp is lit, for example

R

be struck by the airbag if the PASSENGER

AIR BAG OFF indicator lamp is off.

48 Occupant safety

-

A person on the front passenger seat must

always observe the following information:

If the PASSENGER AIR BAG OFF indicator

lamp is lit continuously: the person of

smaller stature should not use the front

passenger seat.

#

Always move the front passenger seat

as far back as possible and fully retract

the seat cushion length adjustment.

While 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 shoulder

belt strap must be routed forwards and

downwards from the seat belt outlet. If

necessary, adjust the seat belt outlet

and the front passenger seat accord‐

ingly.

R

If the front passenger seat is occupied by an

adult or a person with a stature correspond‐

ing to that of an adult, the PASSENGER AIR

BAG OFF indicator lamp must be off. This

indicates that the front passenger airbag is

enabled.

&

WARNING Risk of injury or death when

the PASSENGER AIR BAG OFF indicator

lamp is lit

If the PASSENGER AIR BAG OFF indicator

lamp remains lit after the self-test, the co-

driver airbag is disabled.

If the co-driver seat is occupied, always

ensure that:

If the PASSENGER AIR BAG OFF indicator

lamp is lit continuously, an adult or person

with a build corresponding to that of an adult

should not use the front passenger seat.

Instead, they should use a rear seat.

#

Always comply with the child restraint

system manufacturer's installation

instructions.

R

The classification of the person in the co-

R

If the front passenger seat is occupied by a

driver seat is correct, and the co-driver

airbag is enabled or disabled as is appro‐

priate for the person in the co-driver seat.

person of smaller stature (e.g. a teenager or

small adult), the PASSENGER AIR BAG OFF

indicator lamp either lights up continuously

or remains off, depending on the classifica‐

tion.

When fitting a child restraint system to the front

passenger seat, observe the vehicle-specific

information (/ page 65).

If a person is sitting on the front passenger

seat: PASSENGER AIR BAG OFF may be lit con‐

tinuously or be off, depending on the person's

stature.

R

The person is seated properly with a cor‐

rectly fastened seat belt.

-

If the PASSENGER AIR BAG OFF indicator

lamp is off: move the front passenger

seat as far back as possible, or the per‐

son of smaller stature should use a rear

seat.

Be sure to also observe the following further

related subjects:

R

Securing the child restraint system on the

front passenger seat (/ page 65)

Occupant safety -> Airbags for Your Mercedes C Class 4 Door Fourth Generation (2014-2021)

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