Get Safety Guide for Mercedes CLA 4 Door First Generation (2013-2018)

Panic alarm

To activate: press and hold

! button : for approx. one second.

A visual and audible alarm is triggered if the

alarm system is primed.

To deactivate: press ! button : again.

Insert the key into the ignition lock.

or, on vehicles with KEYLESS-GO start function

or KEYLESS‑GO:

Press the Start/Stop button.

The key must be in the vehicle.

The panic alarm function is only available in cer-

tain countries.

Occupant safety

Introduction to the restraint system

The restraint system can reduce the risk of vehi-

cle occupants coming into contact with parts of

the vehicle's interior in the event of an accident.

Furthermore, the restraint system can also

reduce the forces to which vehicle occupants

are subjected during an accident.

The restraint system includes:

Seat belt system

Airbags

Child restraint system

Child seat securing system

The various components of the restraint system

work complementary to one another. They can

only perform their intended protective function

if all vehicle occupants:

have correctly fastened their seat belt

(Y page 42)

have correctly adjusted their seat and head

restraint (Y page 97).

As the driver, you must also ensure that the

steering wheel is correctly adjusted. Observe

the information relating to the correct driver's

seat position (Y page 97).

Additionally, you must ensure that an airbag can

deploy freely (Y page 44).

The airbag is supplementary to a correctly fas-

tened seat belt. As an additional safety device,

the airbag increases the level of protection for

vehicle occupants in the event of an accident. If

the protection provided by the seat belt is suf-

ficient, the airbags do not deploy. Furthermore,

in the event of an accident, only airbags which

provide greater protection in the given accident

situation deploy. However, seat belts and air-

bags generally do not protect against objects

penetrating the vehicle from the outside.

Information on how the restraint system oper-

ates can be found in "Deployment of the seat

belt tensioner and airbags" (Y page 51).

See "Children in the vehicle" for information on

infants and children traveling with you in the

vehicle restraint systems for infants and chil-

dren(Y page 54).

Important safety notes

WARNING

If the restraint system is modified, it may no

longer work as intended. The restraint system

may then not perform its intended protective

function by failing in an accident or triggering

unexpectedly, for example. There is an

increased risk of injury, possibly even fatal.

Never modify parts of the restraint system. Do

not attempt to modify the wiring as well as

electronic components or their software.

If the vehicle needs to be adapted to accommo-

date a person with disabilities, please contact a

specialist workshop.

Occupant safety

Safety

Mercedes-Benz recommends that you use only

driving aids that have been approved specifi-

cally for your vehicle by Mercedes-Benz.

Restraint system warning lamp

The functions of the restraint system are

checked after the ignition is switched on and at

regular intervals while the engine is running.

Therefore, malfunctions can be detected in

good time.

The 6 restraint system warning lamp on the

instrument cluster lights up when the ignition is

switched on. It goes out no later than a few sec-

onds after the vehicle is started. The compo-

nents of the restraint system are in operational

readiness.

A malfunction has occurred if the 6 restraint

system warning lamp:

does not light up after the ignition is switched

does not go out after a few seconds with the

engine running

lights up again while the engine is running

WARNING

If the restraint system is malfunctioning,

restraint system components may be trig-

gered unintentionally or may not deploy as

intended during an accident. This may affect

the seat belt tensioner or airbag, for example.

This poses an increased risk of injury or even

fatal injury.

Have the restraint system checked and

repaired immediately at a qualified specialist

workshop.

PASSENGER AIR BAG indicator lamp

PASSENGER AIR BAG ON indicator lamp : and

PASSENGER AIR BAG OFF indicator lamp ; are

part of the automatic deactivation system of the

front-passenger front airbag.

The indicator lamps display the status of the

front-passenger front airbag.

PASSENGER AIR BAG ON lights up for 60 sec-

onds, then both indicator lamps are off

(PASSENGER AIR BAG ON and OFF): the front-

passenger front airbag is able to deploy in the

event of an accident.

PASSENGER AIR BAG OFF lights up: the front-

passenger front airbag is disabled. It will then

not be deployed in the event of an accident.

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

front airbag. The PASSENGER AIR BAG OFF indi-

cator lamp may be lit continuously or be off.

Depending on the person in the front-passenger

seat, the front-passenger front airbag must be

either disabled or enabled; see the following

points. You must make sure of this both before

and during a journey.

Children in a rearward-facing child

restraint system: the PASSENGER AIR BAG

OFF indicator lamp must be lit. The front-

passenger front airbag is disabled. It is imper-

ative to observe the notes on the "Automatic

front-passenger front airbag deactivation sys-

tem" (Y page 47) and on "Children in the

vehicle" (Y page 54).

Children in a forward-facing child

restraint system: depending on the installed

child restraint system and the age and size of

the child, the front-passenger front airbag is

either disabled or enabled. Therefore, it is

imperative to observe the notes on the "Auto-

matic front-passenger front airbag deactiva-

Occupant safety

Safety

tion system" (Y page 47) and on "Children in

the vehicle" (Y page 54).

All other persons: the PASSENGER AIR BAG

OFF indicator lamp must be off. The front-

passenger front airbag is enabled. Depending

on the stature of the person on the front-

passenger seat, the PASSENGER AIR BAG

OFF indicator lamp may light up. The front-

passenger front airbag is disabled. It will then

not be deployed in the event of an accident. In

this case, the front-passenger seat should not

be used.

It is imperative to observe the notes on the

"Automatic front-passenger front airbag

deactivation system" (Y page 47) as well as

on "Seat belts" (Y page 41) and "Airbags"

(Y page 44). There, you can also find infor-

mation on the correct seat position.

Seat belts

Introduction

A correctly worn seat belt is the most effective

means of restraining the movement of vehicle

occupants in the event of a collision or if the

vehicle overturns. This reduces the risk of vehi-

cle occupants coming into contact with parts of

the vehicle interior or being ejected from it. The

seat belt also helps to keep the vehicle occu-

pants in the best position in relation to the air-

bag being deployed.

The seat belt system consists of:

seat belts

belt tensioners for the front seat belts and the

outer seat belts in the rear

belt force limiters for the front seat belts and

the outer seat belts in the rear

If the seat belt is pulled quickly or sharply from

the belt outlet, the inertia reel locks. The belt

strap cannot be pulled out any further.

The belt tensioner tightens the seat belt in the

event of a collision so that it fits tightly across

your body. However, it does not pull the vehicle

occupants back in the direction of the seat

backrest.

The belt tensioner does not, however, correct an

incorrect seat position or correct the routing of

a seat belt that is worn incorrectly.

When triggered, seat belt force limiters help to

reduce the peak force exerted by the seat belt

on the vehicle occupant.

The belt force limiters on the front seats are

synchronised with the front airbags, which take

on a part of the deceleration force. This can

reduce the forces to which the vehicle occu-

pants are subjected during an accident.

If the co-driver's seat is not occupied, do not

engage the seat belt tongue in the buckle on

the co-driver's seat. Otherwise, the belt ten-

sioner could be triggered in the event of an

accident and would have to be replaced.

Important safety notes

WARNING

If the seat belt is worn incorrectly, it cannot

perform its intended protective function. Fur-

thermore, an incorrectly worn seat belt can

cause additional injuries, e.g. in the event of

an accident, heavy braking or sudden

changes of direction. There is an increased

risk of injury, possibly even fatal.

Always ensure that all vehicle occupants have

their seat belts fastened correctly and are sit-

ting properly.

WARNING

The seat belt does not offer the intended level

of protection if you have not moved the back-

rest to an almost vertical position. When brak-

ing or in the event of an accident, you could

slide underneath the seat belt and sustain

abdomen or neck injuries, for example. This

poses an increased risk of injury or even fatal

injury.

Adjust the seat properly before beginning

your journey. Always ensure that the backrest

is in an almost vertical position and that the

shoulder section of your seatbelt is routed

across the centre of your shoulder.

WARNING

Persons under 1.50 m tall cannot wear the

seat belts correctly without an additional suit-

able restraint system. If the seat belt is worn

incorrectly, it cannot perform its intended

protective function. Furthermore, an incor-

rectly worn seat belt can cause additional

injuries, e.g. in the event of an accident, heavy

Occupant safety

Safety

braking or sudden changes of direction. There

is an increased risk of injury, possibly even

fatal.

Always secure persons less than 1.50 mtall in

additional suitable restraint systems.

If a child younger than twelve years old and

under 1.50 m in height is travelling in the vehi-

cle:

always secure the child in a child restraint

system suitable for this Mercedes-Benz vehi-

cle. The child restraint system must be appro-

priate to the age, weight and size of the child.

always observe the instructions and safety

notes on the "Automatic front-passenger

front airbag deactivation system"

(Y page 47)

always observe the instructions and safety

notes on "Children in the vehicle"

(Y page 54) in addition to the child restraint

system manufacturer's installation and oper-

ating instructions

WARNING

Seat belts cannot protect as intended, if:

they are damaged, have been modified, are

extremely dirty, bleached or dyed

the seat belt buckle is damaged or

extremely dirty

modifications have been made to the belt

tensioners, belt anchorages or inertia reels

Seat belts may sustain non-visible damage in

an accident, e.g. due to glass splinters. Modi-

fied or damaged seat belts can tear or fail, for

example in the event of an accident. Modified

seat belt tensioners may be deployed unin-

tentionally or not function as intended. There

is an increased risk of injury, possibly even

fatal.

Never modify seat belts, seat belt tensioners,

seat belt anchorages and inertia reels. Ensure

that seat belts are not damaged or worn and

are clean. After an accident, have the seat

belts checked immediately at a qualified spe-

cialist workshop.

Mercedes-Benz recommends that you only use

seat belts which have been approved specifi-

cally for your vehicle by Mercedes-Benz. Other-

wise, your vehicle's general operating permit

could be invalidated.

Sports seat or AMG Performance seat: this

seat is designed for the standard three-point

seat belt. If you fit another multipoint seat belt,

e.g. sport or racing seat belts, the restraint sys-

tem cannot provide the best level of protection.

WARNING

If you feed seat belts through the opening in

the seat backrest, the seat backrest may be

damaged or may even break in the event of an

accident. This poses an increased risk of

injury or even fatal injury.

Only use the standard three-point seat belt.

Never modify the seat belt system.

Correct seat belt use

Pay attention to the safety notes about the seat

belt (Y page 41).

All vehicle occupants must fasten their seat

belts correctly before you start driving. You

must also make sure that all vehicle occupants

have fastened their seat belts correctly during

the journey.

When fastening your seat belt, always make

sure that:

the seat belt tongue is inserted into the belt

buckle that belongs to the seat.

the seat belt is tightened across your body.

Avoid wearing bulky clothing, e.g. a winter

coat.

the seat belt is not twisted.

Only then can the forces which occur be dis-

tributed over the area of the belt.

the shoulder section of the belt is always

routed across the centre of your shoulder.

The shoulder section of the belt must not

come into contact with your neck or be routed

under your arm. Adjust the seat belt to the

appropriate height as necessary.

The lap belt must be taut and as low as pos-

sible over your lap.

The lap belt must always be routed across

your hip joints and not across your abdomen.

Pregnant women must take particular care

with this. If necessary, push the lap belt down

to your hip joint and pull it tight using the

shoulder section of the belt.

Occupant safety

Safety

The seat belt is not routed over sharp, pointed

or fragile objects.

If such objects are located on or in your cloth-

ing, e.g. pens, keys, spectacles, etc. stow

these in a suitable location.

Only one person should use each seat belt at

any one time.

Babies and children must never travel sitting

on the lap of another vehicle occupant. In the

event of an accident, they could be crushed

between the vehicle occupant and seat belt.

Do not secure any objects with a seat belt if

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

cle's occupants.

You must also make sure that objects, e.g.

cushions, are never placed between a person

and the seat.

Seat belts are solely intended to secure and

restrain persons. To secure objects, luggage or

loads, always observe the "Loading guidelines"

(Y page 268).

Fastening and adjusting the seat belts

Observe the safety notes on the seat belt

(Y page 41) and the information on the correct

use of the seat belt (Y page 42).

Basic illustration

Adjust the seat (Y page 97).

The seat backrest must be in an almost ver-

tical position.

Pull the seat belt smoothly from the belt out-

let.

Engage seat belt tongue ; in belt buckle :.

The seat belt on the driver's seat and the

front-passenger seat may be tightened auto-

matically; see "Belt adjustment"

(Y page 43).

If necessary, pull upwards on the shoulder

section of the seat belt to tighten the belt

across your body.

The shoulder section of the seat belt must

always be routed across the centre of the shoul-

der. Adjust the belt outlet if necessary.

To raise: slide the belt outlet upwards.

The belt outlet will engage in various posi-

tions.

To lower: hold belt outlet release = and slide

belt outlet downwards.

Let go of belt outlet release = in the desired

position and make sure that the belt outlet

engages.

Releasing seat belts

Make sure that the seat belt is fully rolled up.

Otherwise, the seat belt or belt tongue will be

trapped in the door or in the seat mechanism.

This could damage the door, the door trim

panel and the seat belt. Damaged seat belts

can no longer fulfil their protective function

and must be replaced. Visit a qualified spe-

cialist workshop.

Press release button in belt buckle, hold belt

tongue firmly and guide the seat belt back.

Seat belt adjustment

The seat-belt adjustment is an integral part of

the PRE-SAFE

convenience function. This func-

tion adjusts the driver's and front-passenger

seat belt to the upper body of the occupants.

The belt strap is tightened slightly when:

the seat belt tongue is engaged in the belt

buckle and

the ignition is switched on

The seat-belt adjustment will apply a certain

tightening force if any slack is detected between

the vehicle occupant and the seat belt. Do not

hold on to the seat belt tightly while it is adjust-

ing.

You can switch the seat-belt adjustment on and

off in the on-board computer (Y page 212).

Occupant safety

Safety

Belt warning for the driver and front

passenger

The 7 seat belt warning lamp in the instru-

ment cluster reminds you that all vehicle occu-

pants must fasten their seat belts. It may light up

continuously or flash. A warning tone may also

sound.

The 7 seat belt warning lamp goes out and

the warning tone stops as soon as the driver's

and the co-driver's seat belts have been fas-

tened.

Rear seat belt status indicator

The seat belts on the left and centre rear seats,

when viewed in the direction of travel, are not

fastened. (Example)

The rear seat belt status indicator is available

only in certain countries.

The rear seat belt status indicator informs you

which rear seat belt is not fastened.

Cancelling the rear seat belt status indicator

immediately (Y page 216).

Airbags

Introduction

The airbag installation location is identified by

the label AIRBAG.

An airbag supplements a correctly fastened seat

belt. It is not a substitute for seat belts. The air-

bag provides additional protection in the corre-

sponding accident situations.

Not all airbags are deployed in an accident. The

various airbag systems work independently of

one another (Y page 51).

However, no system available today can com-

pletely eliminate injuries and fatalities.

Due to the required speed of the airbag after

deployment, it is also not possible to entirely

rule out the risk of injuries caused by the airbag.

Important safety notes

WARNING

If you deviate from the correct seat position,

the airbag cannot perform its intended pro-

tective function and can even cause addi-

tional injuries when deployed. There is an

increased risk of serious or even fatal injuries.

In order to avoid such risks, always ensure

that all vehicle occupants:

fasten their seatbelts correctly, including

pregnant women

are seated correctly and maintain the fur-

thest possible distance from the airbags

observe the following notes

Always ensure that there are no objects loca-

ted between the airbag and the vehicle occu-

pant.

Adjust the seats properly before beginning

your journey. Always make sure that the seat

is in an almost upright position. The centre of

the head restraint must support the head at

about eye level.

Move the driver's and front-passenger seats

as far back as possible. The driver's seat posi-

tion must allow the vehicle to be driven safely.

Only hold the steering wheel on the outside.

This allows the airbag to be fully deployed.

Always lean against the backrest while driv-

ing. Do not lean forwards or lean against the

door or side window. You may otherwise be in

the deployment area of the airbags.

Always keep your feet in the footwell in front

of the seat. Do not put your feet on the dash-

board, for example. Your feet may otherwise

be in the deployment area of the airbag.

Always secure persons less than 1.50 mtall in

suitable restraint systems. Up to this height,

the seat belt cannot be worn correctly.

If a child is travelling in your vehicle, also

observe the following notes:

Always secure children under twelve years of

age and less than 1.50 mtall in suitable child

restraint systems.

Child restraint systems should be fitted to the

rear seats.

Only secure a child to the front-passenger

seat when the front-passenger front airbag is

Occupant safety

Safety

disabled, and only then in a rearward-facing

child restraint system. If the PASSENGER AIR

BAG OFF indicator lamp is permanently lit, the

front-passenger front airbag is disabled

(Y page 40).

Always observe the instructions and safety

notes on the "Automatic front-passenger

front airbag deactivation system"

(Y page 47) and on "Children in the vehicle"

(Y page 54) in addition to the manufactur-

er's operating and installation instructions for

the child restraint system.

Objects in the vehicle interior may prevent

the airbag from functioning correctly. Before

starting your journey and to avoid risks resulting

from the speed of the airbag as it deploys, make

sure that:

there are no people, animals or objects

between the vehicle occupants and an airbag.

there are no objects between the seat, door

and B-pillar.

no hard objects, e.g. coat hangers, are hang-

ing on the grab handles or coat hooks.

no accessories, such as cup holders, are

attached to the vehicle within the deployment

area of an airbag, e.g. to doors, side windows,

rear side trim or side walls.

no heavy, sharp-edged or fragile objects are in

the pockets of your clothing. Store such

objects in a suitable place.

WARNING

If you modify an airbag cover or affix objects

such as stickers to it, the airbag can no longer

function correctly. There is an increased risk

of injury.

Never modify an airbag cover or affix objects

to it.

WARNING

Sensors to control the airbags are located in

the doors. Modifications or work not per-

formed correctly to the doors or door panel-

ling, as well as damaged doors, can lead to the

function of the sensors being impaired. The

airbags might therefore not function properly

any more. Consequently, the airbags cannot

protect vehicle occupants as they are

designed to do. This poses an increased risk

of injury.

Never modify the doors or parts of the doors.

Always have work on the doors or door pan-

elling carried out at a qualified specialist

workshop.

Front airbags

Do not place heavy objects on the front-

passenger seat. This could cause the system

to identify the seat as being occupied. In the

event of an accident, the restraint systems on

the front-passenger side may be triggered

and have to be replaced.

Driver's airbag : deploys in front of the steer-

ing wheel. Front-passenger front airbag ;

deploys in front of and above the glove com-

partment.

When deployed, the front airbags offer addi-

tional head and thorax protection for the occu-

pants in the front seats.

The PASSENGER AIR BAG OFF indicator lamp

informs you about the status of the front-

passenger front airbag (Y page 40).

The front-passenger front airbag will deploy only

if:

the automatic front-passenger front airbag

deactivation system has detected that the

front-passenger seat is occupied

(Y page 47). The PASSENGER AIR BAG OFF

indicator lamp is not lit (Y page 47)

the restraint system control unit predicts a

high accident severity

Occupant safety

Safety

Driver's kneebag

Driver's knee airbag : deploys under the steer-

ing column. The driver's knee airbag is triggered

together with the front airbags.

The driver's knee airbag offers additional thigh,

knee and lower leg protection for the occupant

in the driver's seat.

The driver's knee airbag is available only in

certain countries.

Sidebags

WARNING

Unsuitable seat covers may obstruct or even

prevent deployment of the airbags integrated

into the seats. The airbags may then fail to

protect the vehicle occupants as intended.

Operation of the automatic co-driver's front

airbag deactivation system may also be

impaired. There is an increased risk of injury,

possibly even fatal.

Use only seat covers which have been specif-

ically approved for the respective seat by

Mercedes-Benz.

Front sidebags : and rear sidebags ; deploy

next to the outer bolster of the seat backrest.

When deployed, the sidebag offers additional

thorax protection. It also offers additional pelvis

protection for occupants in the front seats.

However, it does not protect the:

head

neck

arms

In the event of a side impact, the sidebag is

deployed on the side on which the impact

occurs.

Vehicles with the automatic front-passenger

front airbag deactivation system: the sidebag on

the front-passenger side deploys under the fol-

lowing conditions:

an occupant is detected in the front-

passenger seat or

the seat belt buckle tongue is engaged in the

belt buckle of the front-passenger seat

If the belt tongue is engaged in the belt buckle,

the sidebag on the front-passenger side deploys

if an appropriate accident situation occurs. In

this case, deployment is independent of

whether the front-passenger seat is occupied or

not.

Windowbags

Windowbags : are integrated into the side of

the roof frame and deployed in the area from the

A-pillar to the C-pillar.

When deployed, the windowbag offers addi-

tional head protection. However, it does not

protect the thorax or arms.

In the event of a side impact, the windowbag is

deployed on the side on which the impact

occurs.

If the system determines that it can offer addi-

tional protection to that provided by the seat

Occupant safety

Safety

belt, a windowbag may be deployed in other

accident situations (Y page 51).

Automatic front-passenger front air-

bag deactivation

Introduction

In order to recognise a child restraint system on

the front-passenger seat, the automatic front-

passenger front airbag deactivation system cat-

egorises the person in the front-passenger seat.

Depending on that result, the front-passenger

front airbag is either enabled or disabled. If a

rearward-facing child restraint system is fitted

to the front-passenger seat, the PASSENGER

AIR BAG OFF indicator lamp must light up after

the system self-test and remain lit. The front-

passenger front airbag is disabled.

The system does not disable:

the sidebag

the windowbag

the seat belt tensioner

Make sure that your vehicle is equipped with the

automatic front-passenger front airbag deacti-

vation system (Y page 57). If this is not the

case, always install a child restraint system on a

suitable rear seat (Y page 59).

If it is absolutely necessary to install a child

restraint system on the front-passenger seat, be

sure to observe the correct positioning of the

child restraint system. Never place objects

under or behind the child restraint system, e.g. a

cushion. Fully retract the seat cushion length.

The entire base of the child restraint system

must always rest on the seat cushion of the

front-passenger seat. The backrest of a forward-

facing child restraint system must, as far as

possible, rest flat against the backrest of the

front-passenger seat. The child restraint system

must not touch the roof or be put under strain by

the head restraint. Adjust the angle of the seat

backrest and the head restraint position accord-

ingly. Only then is the correct function of the

automatic front-passenger front airbag deacti-

vation system guaranteed. Always observe the

information on suitable positioning of the child

restraint system (Y page 59) in addition to the

child restraint system manufacturer's installa-

tion instructions.

Operation of automatic front-passenger

front airbag deactivation

PASSENGER AIR BAG ON indicator lamp

;

PASSENGER AIR BAG OFF indicator lamp

The indicator lamps inform you whether the

front-passenger front airbag is disabled or ena-

bled.

Press the Start/Stop button once or twice, or

turn the key to position 1 or 2 in the ignition

lock.

The system carries out a self-diagnosis.

The PASSENGER AIR BAG OFF and PASSENGER

AIR BAG ON indicator lamps must light up simul-

taneously for approximately six seconds.

The indicator lamps display the status of the

front-passenger front airbag:

PASSENGER AIR BAG ON lights up for 60 sec-

onds, then both indicator lamps are off

(PASSENGER AIR BAG ON and OFF): the front-

passenger front airbag is able to deploy in the

event of an accident.

PASSENGER AIR BAG OFF lights up: the front-

passenger front airbag is disabled. It will then

not be deployed in the event of an accident.

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

front airbag. The PASSENGER AIR BAG OFF indi-

cator lamp may be lit continuously or be off.

If the status of the front-passenger front airbag

changes while the vehicle is in motion, an airbag

display message appears on the instrument

cluster (Y page 226). When the front-passenger

seat is occupied, always pay attention to the

PASSENGER AIR BAG OFF indicator lamp. Be

aware of the status of the front-passenger front

airbag both before and during the journey.

Occupant safety

Safety

If a person sits in the passenger seat, he/she

must be:

seated with the seat belt fastened correctly

in an almost upright position with his/her

back against the seat backrest

with his/her feet resting on the floor, if pos-

sible

If the front passenger does not observe these

conditions, the automatic front-passenger front

airbag deactivation system may be influenced,

e.g. because the front passenger:

transfers his/her weight by supporting him-

self/herself on a vehicle armrest

sits in such a way that his/her weight is raised

from the seat cushion

The front-passenger front airbag may be disa-

bled by mistake as a result of these or similar

actions. In this case, the PASSENGER AIR BAG

OFF indicator lamp lights up permanently. The

front-passenger front airbag then does not

deploy during an accident.

WARNING

If the PASSENGER AIRBAG OFF indicator lamp

is lit, the front-passenger front airbag is disa-

bled. It will not be deployed in the event of an

accident and cannot perform its intended pro-

tective function. A person in the front-

passenger seat could then, for example, come

into contact with the vehicle's interior, espe-

cially if the person is sitting too close to the

dashboard. This poses an increased risk of

injury or even fatal injury.

When the front-passenger seat is occupied,

always make sure that:

the classification of the person in the front-

passenger seat is correct and that the front-

passenger front airbag is enabled or disa-

bled in accordance with the person in the

front-passenger seat.

the front-passenger seat has been moved

back as far back as possible.

the person is seated correctly.

Make sure, both before and during the jour-

ney, that the status of the front-passenger

front airbag is correct.

WARNING

If you secure a child in a rearward-facing child

restraint system on the co-driver's seat and

the PASSENGER AIR BAG OFF indicator lamp

is off, the co-driver's front airbag can deploy in

the event of an accident. The child could be

struck by the airbag. There is an increased risk

of injury, possibly even fatal.

In this case, always make sure that the co-

driver's front airbag has been disabled. The

PASSENGER AIR BAG OFF indicator lamp

must be lit.

If the PASSENGER AIR BAG OFF indicator lamp

stays off, do not install a rearward-facing child

restraint system on the front-passenger seat.

Further information can be found under "Prob-

lems with the automatic front-passenger front

airbag deactivation system" (Y page 50).

WARNING

If you secure a child in a forward-facing child

restraint system on the front-passenger seat

and you position the front-passenger seat too

close to the dashboard, in the event of an

accident, the child could:

come into contact with the vehicle's inte-

rior if the PASSENGER AIR BAG OFF indi-

cator lamp is lit, for example

be struck by the airbag if the PASSENGER

AIR BAG OFF indicator lamp is off

This poses an increased risk of injury or even

fatal injury.

Always move the front-passenger seat as far

back as possible and fully retract the seat

cushion length. Always make sure that the

shoulder belt strap is correctly routed from

the vehicle belt outlet to the shoulder belt

guide on the child restraint system. The shoul-

der belt strap must be routed forwards and

downwards from the vehicle belt outlet. If

necessary, adjust the vehicle belt outlet and

the front-passenger seat accordingly. Always

observe the information about suitable posi-

tioning of the child restraint system in this

Owner's Manual as well as the child restraint

Occupant safety

Safety

system manufacturer's installation instruc-

tions.

Always observe the vehicle-specific information

for the correct positioning of the child restraint

system (Y page 59).

If the automatic front-passenger front airbag

deactivation system detects that:

the front-passenger seat is unoccupied, the

PASSENGER AIR BAG OFF indicator lamp

lights up after the system self-test and

remains lit. This indicates that the front-

passenger front airbag is disabled.

the front-passenger seat is occupied by a

child in a rearward-facing child restraint sys-

tem, the PASSENGER AIR BAG OFF indicator

lamp lights up after the system self-test and

remains lit. This indicates that the front-

passenger front airbag is disabled.

But in the case of a child in a rearward-facing

child restraint system, the PASSENGER AIR

BAG OFF indicator lamp can also go out after

the system self-test. This indicates that the

front-passenger front airbag is enabled. The

result of the classification is dependent on,

among other factors, the child restraint sys-

tem and the child's stature. It is recommen-

ded that you fit the child restraint system to a

suitable rear seat.

the front-passenger seat is occupied by a

child in a forward-facing child restraint sys-

tem, either the PASSENGER AIR BAG OFF

indicator lamp lights up and remains lit after

the system self-test depending on the result

of the classification, or it goes out. The result

of the classification is dependent on, among

other factors, the child restraint system and

the child's stature.

Move the front-passenger seat as far back as

possible. Always observe the information in

"Child restraint systems on the front-

passenger seat" (Y page 57) and in "Suita-

ble positioning of the child restraint system"

(Y page 59). Alternatively, you can fit the

child restraint system to a suitable rear seat.

the front-passenger seat is occupied by a per-

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

small adult), the PASSENGER AIR BAG OFF

indicator lamp lights up and remains lit after

the system self-test depending on the result

of the classification or, alternatively, goes out.

If the PASSENGER AIR BAG OFF indicator

lamp is off, move the front-passenger seat

as far back as possible. Alternatively, a per-

son with a small stature can sit on a rear

seat.

If the PASSENGER AIR BAG OFF indicator

lamp is lit, a person with a smaller stature

should not use the front-passenger seat.

the front-passenger seat is occupied by an

adult or a person with the stature of an adult,

the PASSENGER AIR BAG OFF indicator lamp

goes out after the system self-test. This indi-

cates that the front-passenger front airbag is

enabled.

If children are travelling in the vehicle, be sure to

observe the notes on "Children in the vehicle"

(Y page 54).

If the automatic front-passenger front airbag

deactivation system is malfunctioning, the red

6 restraint system warning lamp on the

instrument cluster and the PASSENGER AIR

BAG OFF indicator lamp light up simultaneously.

The front-passenger front airbag is disabled in

this case and does not deploy during an acci-

dent. Have the automatic front-passenger front

airbag deactivation system checked and

repaired immediately at a qualified specialist

workshop. Mercedes-Benz recommends that

you use a Mercedes-Benz Service Centre for this

purpose.

If the front-passenger seat, the seat cover or the

seat cushion are damaged, have the necessary

repair work carried out at a qualified specialist

workshop. Mercedes-Benz recommends that

you use a Mercedes-Benz Service Centre for this

purpose.

For safety reasons, Mercedes-Benz recom-

mends that you use only a child restraint system

that has been tested and approved by

Mercedes-Benz in combination with the auto-

matic front-passenger front airbag deactivation

system.

System self-test

DANGER

If both the PASSENGER AIR BAG OFF and

PASSENGER AIR BAG ON indicator lamps do

not light up during the system self-test, the

system is malfunctioning. The front-

passenger front airbag might be triggered

unintentionally or might not be triggered at all

in the event of an accident with high deceler-

Occupant safety

Safety

ation. This poses an increased risk of injury or

even fatal injury.

In this case the front-passenger seat may not

be used. Do not install a child restraint system

on the front-passenger seat. Have the auto-

matic front-passenger front airbag deactiva-

tion system checked and repaired immedi-

ately at a qualified specialist workshop.

WARNING

If the PASSENGER AIRBAG OFF indicator lamp

remains lit after the system self-test, the

front-passenger front airbag is disabled. It will

not be deployed in the event of an accident. In

this case, the front-passenger front airbag

cannot perform its intended protective func-

tion, e.g. when a person is seated in the front-

passenger seat.

That person could, for example, come into

contact with the vehicle's interior, especially

if the person is sitting too close to the dash-

board. This poses an increased risk of injury or

even fatal injury.

When the front-passenger seat is occupied,

always ensure that:

the classification of the person in the front-

passenger seat is correct and the front-

passenger front airbag is enabled or disa-

bled in accordance with the person in the

front-passenger seat.

the person is seated properly with a cor-

rectly fastened seat belt.

the front-passenger seat has been moved

as far back as possible.

If the PASSENGER AIR BAG OFF indicator

lamp remains lit when it should not, the front-

passenger seat may not be used. Do not

install a child restraint system on the front-

passenger seat. Have the automatic front-

passenger front airbag deactivation system

checked and repaired immediately at a quali-

fied specialist workshop.

WARNING

Objects between the seat surface and the

child restraint system could affect the func-

tion of the automatic front-passenger front

airbag deactivation system. This could result

in the front-passenger front airbag not func-

tioning as intended during an accident. This

poses an increased risk of injury or even fatal

injury.

Do not place any objects between the seat

surface and the child restraint system. The

entire base of the child restraint system must

always rest on the seat cushion of the front-

passenger seat. The backrest of the forwards-

facing child restraint system must, as far as

possible, be resting on the backrest of the

rear reclining seat. Always comply with the

child restraint system manufacturer's instal-

lation instructions.

After the system self-test, the PASSENGER AIR

BAG OFF or PASSENGER AIR BAG ON indicator

lamp shows the status of the front-passenger

front airbag (Y page 47). If the front-passenger

front airbag is enabled, the PASSENGER AIR

BAG ON indicator lamp lights up for 60 seconds

and then goes out.

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

front airbag. The PASSENGER AIR BAG OFF indi-

cator lamp may be lit continuously or be off.

Further information can be found under "Prob-

lems with the automatic front-passenger front

airbag deactivation system" (Y page 50).

Problems with automatic front-passenger front airbag deactivation

Be sure to observe the notes on "System self-test" (Y page 49).

Occupant safety

Safety

Problem

Possible causes/consequences and MM Solutions

The PASSENGER AIR

BAG OFF indicator lamp

lights up and remains lit,

even though the front-

passenger seat is occu-

pied by an adult or a per-

son with a build corre-

sponding to that of an

adult.

The classification of the person on the front-passenger seat is false.

Make sure the conditions for a correct classification of the person

on the front-passenger seat are met (Y page 47).

If the PASSENGER AIR BAG OFF indicator lamp remains lit, the front-

passenger seat may not be used.

Have the automatic front-passenger front airbag deactivation sys-

tem checked immediately at a qualified specialist workshop.

The PASSENGER AIR

BAG OFF indicator lamp

does not light up and/or

does not stay on.

The front-passenger seat

is:

empty

occupied with a rear-

ward-facing child

restraint system

The automatic front-passenger front airbag deactivation system is

malfunctioning.

Make sure there is nothing between the seat and the child restraint

system.

Make sure that the entire base of the child restraint system rests on

the seat cushion of the front-passenger seat.

Make sure that the seat cushion length is fully retracted.

When installing the child restraint system, make sure that the seat

belt is tight. Do not pull the seat belt tight with the front-passenger

seat adjustment. This could result in the seat belt and the child

restraint system being pulled too tightly.

Check that the child restraint system is installed correctly.

Make sure that no objects are applying additional weight to the

seat.

If the PASSENGER AIR BAG OFF indicator lamp remains off and/or

the PASSENGER AIR BAG ON indicator lamp lights up, do not install

a rearward-facing child restraint system on the front-passenger

seat. It is recommended that you fit the child restraint system to a

suitable rear seat.

Have the automatic front-passenger front airbag deactivation sys-

tem checked immediately at a qualified specialist workshop.

Deployment of belt tensioners and air-

bags

Important safety notes

WARNING

After the airbag deploys, the airbag parts are

hot. There is a risk of injury.

Do not touch the airbag parts. Have a

deployed airbag replaced at a qualified spe-

cialist workshop as soon as possible.

WARNING

Pyrotechnical belt tensioners which have

been triggered are no longer operational and

therefore cannot protect as intended. There is

an increased risk of injury, possibly even fatal.

Have pyrotechnic belt tensioners which have

been triggered replaced at a qualified special-

ist workshop immediately.

Mercedes-Benz recommends that you have the

vehicle towed to a qualified specialist workshop

after an accident. Take this into account, par-

ticularly if a seat belt tensioner was triggered or

an airbag was deployed.

An electric motor is used by PRE-SAFE

to trig-

ger the tightening of the seat belt in hazardous

situations. This procedure is reversible.

If the belt tensioners are triggered or an airbag is

deployed, you will hear a bang, and a small

Occupant safety

Safety

amount of powder may also be released. The

6 restraint system warning lamp lights up.

Only in rare cases will the bang affect your hear-

ing. In general, the powder released is not haz-

ardous to health but may cause short-term

breathing difficulties to persons suffering from

asthma or other pulmonary conditions. Provided

it is safe to do so, you should leave the vehicle

immediately or open the window in order to pre-

vent breathing difficulties.

Operation

During the first stage of a collision, the restraint

system control unit evaluates important physi-

cal data relating to vehicle deceleration or accel-

eration, such as:

duration

direction

intensity

Based on the evaluation of this data, the

restraint system control unit triggers the seat

belt tensioners in the event of a head-on or rear

collision.

A seat belt tensioner can be triggered only if:

the ignition is switched on

the components of the restraint system are

operational. You can find further information

under: "Restraint system warning lamp"

(Y page 40)

the seat belt buckle tongue has engaged in

the belt buckle of the respective front seat

The seat belt tensioners in the rear compart-

ment are triggered independently of the lock

status of the seat belts.

If the restraint system control unit detects a

high-severity accident, in certain head-on colli-

sions, additional components of the restraint

system are deployed independently of each

other:

Front airbags and driver's kneebag

Windowbag, if the system determines that

deployment can offer additional protection to

that provided by the seat belt

On vehicles with the automatic front-passenger

front airbag deactivation system: depending on

the person in the front-passenger seat, the

front-passenger front airbag is either disabled or

enabled. The front-passenger front airbag can

be deployed in an accident only if the

PASSENGER AIR BAG OFF indicator lamp is off.

Observe the information on the PASSENGER AIR

BAG indicator lamps (Y page 40).

Your vehicle has two-stage front airbags. In the

first deployment stage, the front airbag is filled

with propellant gas to reduce the risk of injuries.

The front airbag is fully deployed if the second

deployment stage is activated within a few mil-

liseconds.

The activation threshold for the seat belt ten-

sioners and airbags is determined based on the

evaluation of the vehicle's rate of deceleration

or acceleration at various points in the vehicle.

This process is pre-emptive in nature. The trig-

gering/deployment process should take place

in good time at the start of the collision.

The rate of vehicle deceleration or acceleration

and the direction of the force are essentially

determined by:

the distribution of forces during the collision

the collision angle

the deformation characteristics of the vehicle

the characteristics of the object with which

the vehicle has collided

Factors that can be seen and measured only

after a collision has occurred do not play a deci-

sive role in the deployment of an airbag, nor do

they provide an indication of airbag deployment.

The vehicle may be deformed significantly with-

out an airbag being deployed. This is the case if

only parts that are relatively easily deformed are

affected and the rate of deceleration is not high.

Conversely, an airbag may be deployed even

though the vehicle suffers only minor deforma-

tion. This is the case if, for example, very rigid

vehicle parts such as longitudinal body mem-

bers are hit, and sufficient deceleration occurs

as a result.

If the restraint system control unit detects a side

impact, the applicable components of the

restraint system are activated independently of

each other.

Sidebags on the side on which an impact

occurs, independently of the seat belt ten-

sioner and seat belt usage

Vehicles with the automatic front-passenger

front airbag deactivation system: the sidebag

Occupant safety

Safety

on the front-passenger side deploys under the

following conditions:

an occupant is detected in the front-

passenger seat or

the seat belt buckle tongue is engaged in

the belt buckle of the front-passenger seat

Windowbag on the side on which an impact

occurs, independently of seat belt usage and

regardless of whether the front-passenger

seat is occupied

Seat belt tensioners, if the system determines

that deployment can offer additional protec-

tion for the vehicle occupants in this situation

Not all airbags are deployed in an accident.

The different airbag systems work independ-

ently of each other.

How the airbag system works is determined

by the severity of the accident detected,

especially the vehicle deceleration or accel-

eration, and the apparent type of accident:

frontal collision

side impact

PRE-SAFE

(anticipatory occupant

protection)

Introduction

In certain hazardous situations, PRE-SAFE

takes pre-emptive measures to protect the vehi-

cle occupants.

Important safety notes

Make sure that there are no objects in the

footwell or behind the seats. There is a risk

that the seats and/or the objects could be

damaged when PRE-SAFE

is activated.

Although your vehicle is equipped with PRE-

SAFE

, the possibility of injury in the event of an

accident cannot be ruled out. Always adapt your

driving style to suit the prevailing road and

weather conditions and maintain a safe distance

from the vehicle in front. Drive carefully.

Function

PRE-SAFE

intervenes:

in emergency braking situations, e.g. when

BAS is activated

in critical driving situations, e.g. when physi-

cal limits are exceeded and the vehicle under-

steers or oversteers severely

when active Brake Assist intervenes power-

fully

PRE-SAFE

takes the following measures

depending on the hazardous situation detected:

the front seat belts are pre-tensioned.

if the vehicle skids, the side windows and the

panorama sliding sunroof are closed.

vehicles with the memory function: the front-

passenger seat is adjusted if it is in an unfav-

ourable position.

If the hazardous situation passes without result-

ing in an accident, PRE-SAFE

slackens the belt

pre-tensioning. All settings made by PRE-SAFE

can then be reversed.

If the seat belt pre-tensioning is not reduced:

Move the seat backrest or seat back slightly

when the vehicle is stationary.

Seat belt pre-tensioning is reduced and the

locking mechanism is released.

The seat-belt adjustment is an integral part of

the PRE-SAFE

convenience function. Informa-

tion about the convenience function can be

found under "Belt adjustment" (Y page 43).

Automatic measures after an acci-

dent

Immediately after an accident, the following

measures may be implemented, depending on

the type and severity of the impact:

the hazard warning lamps are activated

the emergency lighting is activated

the vehicle doors are unlocked

the front side windows are lowered

the engine is switched off and the fuel supply

is cut off

vehicles with the Mercedes-Benz emergency

call system: automatic emergency call

Occupant safety

Safety

Children in the vehicle

Important safety notes

Accident statistics show that children secured

in the rear seats are safer than children secured

in the front seats. For this reason, Mercedes-

Benz strongly advises that you fit a child

restraint system on a rear seat. Children are

generally better protected there.

If a child younger than twelve years old and

under 1.50 m in height is travelling in the vehi-

cle:

always secure the child in a child restraint

system suitable for Mercedes-Benz vehicles.

The child restraint system must be appropri-

ate to the age, weight and size of the child.

be sure to observe the instructions and safety

notes in this section in addition to the child

restraint system manufacturer's installation

instructions

be sure to observe the instructions and safety

notes on the automatic front-passenger front

airbag deactivation system (Y page 47).

WARNING

If you leave children unattended in the vehi-

cle, they may be able to set the vehicle in

motion if, for example, they:

release the parking brake

shift the automatic transmission out of park

position P or shift manual transmission into

neutral

start the engine

In addition, they may operate vehicle equip-

ment and become trapped. There is a risk of

an accident and injury.

When leaving the vehicle, always take the key

with you and lock the vehicle. Never leave

children unattended in the vehicle.

WARNING

If persons (particularly children) are exposed

to heat or cold for a prolonged period, there is

a risk of serious or even fatal injuries. Never

leave persons (particularly children) unatten-

ded in the vehicle.

WARNING

If the child restraint system is placed in direct

sunlight, the parts could become very hot.

Children could be suffer burns by touching

these parts, in particular on the metallic parts

of the child restraint system. There is a risk of

injury.

If you and your child leave the vehicle, always

make sure that the child restraint system is

not in direct sunlight. Cover it with a blanket,

for example. If the child restraint system has

been exposed to direct sunlight, leave it to

cool down before securing the child in it.

Never leave children unattended in the vehi-

cle.

Always ensure that all vehicle occupants have

their seat belts fastened correctly and are sitting

properly. Particular attention must be paid to

children.

Observe the safety notes on the seat belt

(Y page 41) and the notes on how to use the seat

belt properly (Y page 42).

Child restraint system

If you fit a rearward-facing child restraint system

on the centre rear seat, the rear seat armrest

must be folded back as far as it will go.

Be sure to observe the correct use of the child

restraint system (Y page 59).

For safety reasons, Mercedes-Benz recom-

mends that you only use a child restraint system

recommended by Mercedes-Benz

(Y page 63).

WARNING

If the child restraint system is incorrectly fit-

ted on the seat position suitable for this pur-

pose, it cannot perform its intended protec-

tive function. In the event of an accident,

sharp braking or a sudden change in direction,

the child may not be held securely. There is an

increased risk of serious or even fatal injuries.

Observe the manufacturer's installation

instructions and the correct use for the child

restraint system. Make sure that the entire

surface of the child restraint system is resting

Children in the vehicle

Safety

on the seat surface. Never place objects

under or behind the child restraint system,

e.g. cushions. Only use child restraint sys-

tems with the original cover designed for

them. Only replace damaged covers with gen-

uine covers.

WARNING

If the child restraint system is fitted incor-

rectly or is not secured, it can come loose in

the event of an accident, heavy braking or a

sudden change in direction. The child

restraint system could be thrown about, strik-

ing vehicle occupants. There is an increased

risk of injury, possibly even fatal.

Always fit child restraint systems properly,

even if they are not being used. Make sure

that you observe the child restraint system

manufacturer's installation instructions.

You will find further information on stowing

objects, luggage and loads securely under

"Loading guidelines" (Y page 268).

WARNING

Child restraint systems or their securing sys-

tems that have been damaged or subjected to

a load in an accident cannot perform their

intended protective function. In the event of

an accident, sharp braking or a sudden

change in direction, the child may not be held

securely. There is an increased risk of serious

or even fatal injuries.

Immediately replace child restraint systems

that have been damaged or subjected to a

load in an accident. Have the child restraint

securing systems checked in a qualified spe-

cialist workshop before fitting a child restraint

system again.

Securing systems for child restraint systems

include:

the seat belt system

the ISOFIX or i-Size securing rings

Top Tether anchorage points

If it is absolutely necessary to fit a child restraint

system on the co-driver's seat, be sure to

observe the notes on "Child restraint systems

on the co-driver's seat" (Y page 57).

Observe the warning labels in the vehicle inte-

rior and on the child restraint system.

It is advisable to use Mercedes-Benz care

products to clean child restraint systems rec-

ommended by Mercedes-Benz. You can

obtain information at a qualified specialist

workshop.

ISOFIX and i-Size child seat securing

systems

WARNING

ISOFIX child restraint systems or i-Size child

restraint systems do not offer sufficient pro-

tection for children whose weight is greater

than 22 kg, who are secured using the safety

belt integrated in the child restraint system.

The child could, for example, not be restrained

correctly in the event of an accident. This

poses an increased risk of injury or even fatal

injury.

If the child weighs more than 22 kg, only use

ISOFIX child restraint systems or i-Size child

restraint systems with which the child is also

secured with the vehicle seat belt. Also secure

the child restraint system with the Top Tether

belt, if available.

Observe the instructions for correct use of the

child restraint system (Y page 59) and the

installation and operating instructions for the

child restraint system used as provided by the

manufacturer .

Before every trip, make sure that the ISOFIX

child restraint system or the i-Size child restraint

system is engaged correctly in both ISOFIX or i-

Size securing rings.

Children in the vehicle

Safety

This symbol indicates an ISOFIX position that is

suitable for attaching an ISOFIX child restraint

system. A similar symbol can be found on the

ISOFIX child restraint system.

This symbol indicates an i‑Size position that is

suitable for attaching an i-Size child restraint

system. A similar symbol can be found on the i-

Size child restraint system.

When fitting the child restraint system,

make sure that the seat belt for the centre

seat does not get trapped. Otherwise, the

seat belt could be damaged.

ISOFIX securing rings

;

i-Size securing rings

Install the ISOFIX child restraint system on

both ISOFIX securing rings : or i-Size secur-

ing rings ;.

Install the i-Size child restraint system on both

i-Size securing rings ;.

ISOFIX and i-Size are standardised securing sys-

tems for special child restraint systems. ISOFIX

child restraint systems are approved in accord-

ance with ECE R-44. i-Size child restraint sys-

tems are approved in accordance with ECE

R-129.

Only child restraint systems that have been

approved in accordance with ECE R-44 may be

attached to ISOFIX securing rings. ISOFIX child

restraint systems in accordance with ECE R-44

and i‑Size child restraint systems that have been

approved in accordance with ECE R-129 may be

attached to i-Size securing rings. ISOFIX secur-

ing ring : or i-Size securing ring ; are instal-

led on the left and right sides of the rear seats.

Top Tether

Introduction

Top Tether provides an additional connection

between the child restraint system secured with

ISOFIX and the vehicle. It helps reduce the risk

of injury even further. If the child restraint sys-

tem is fitted with a Top Tether belt, this should

always be used.

Important safety notes

WARNING

If the rear seat backrests are not locked, they

could fold forwards in the event of an acci-

Children in the vehicle

Safety

dent, heavy braking or sudden changes of

direction. As a result, child restraint systems

cannot perform their intended protective

function. Rear seat backrests that are not

locked can also cause additional injuries, e.g.

in the event of an accident. This poses an

increased risk of injury or even fatal injury.

Always lock rear seat backrests after fitting a

Top Tether belt. Observe the lock verification

indicator. Adjust the rear seat backrests so

that they are in an upright position.

If the rear backrest is not engaged and locked,

the red lock verification indicator will be visible

(Y page 271).

Top Tether anchorages

The Top Tether anchorage points are fitted in the

rear compartment behind the outer head

restraints on the parcel shelf.

Press down the rear of cover ; in the direc-

tion of the arrow.

Cover ; is raised slightly at the front.

Fold cover ; upwards.

Vehicles with adjustable head restraints:

Move head restraint : upwards.

Route Top Tether belt A under head

restraint : between the two head restraint

bars.

Vehicles without adjustable head restraints:

Top Tether belt with one belt strap: route

Top Tether belt A centrally over head

restraint :.

Top Tether belt with two belt straps: route

one Top Tether belt A to the left and one to

the right past the side of head restraint :.

All vehicles:

Fit the ISOFIX child restraint system with Top

Tether. Always comply with the child restraint

system manufacturer's installation instruc-

tions when doing so.

Hook Top Tether hook ? of Top Tether belt

A into Top Tether anchorage =.

Ensure that:

Top Tether hook ? is hooked into Top

Tether anchorage = as shown

Top Tether belt A is not twisted

Top Tether belt A is routed between the

rear seat backrest and the luggage com-

partment cover if the luggage compart-

ment cover is fitted

Tension Top Tether belt A. Always comply

with the child restraint system manufactur-

er's installation instructions when doing so.

Vehicles with adjustable head restraints:

If necessary, move head restraint : back

down again slightly. Make sure that you do

not interfere with the correct routing of Top

Tether belt A.

Child restraint system on the front-

passenger seat

General notes

Accident statistics show that children secured

in the rear seats are safer than children secured

in the front-passenger seat. For this reason,

Mercedes-Benz strongly advises that you install

a child restraint system on a rear seat.

Children in the vehicle

Safety

Vehicles with the automatic front-passenger

front airbag deactivation system: if it is abso-

lutely necessary to fit a child restraint system to

the front-passenger seat, always observe the

information on the "Automatic front-passenger

front airbag deactivation system" (Y page 47).

You can thus avoid the risks that could arise as

a result of:

a child restraint system that is not detected

by the automatic front-passenger front airbag

deactivation system

unintentional disabling of the front-passenger

front airbag

unsuitable positioning of the child restraint

system, e.g. too close to the dashboard

Please observe the warning notice on the

front-passenger sun visor; see illustration.

WARNING

If you secure a child in a rearward-facing child

restraint system on the co-driver's seat and

the PASSENGER AIR BAG OFF indicator lamp

is off, the co-driver's front airbag can deploy in

the event of an accident. The child could be

struck by the airbag. There is an increased risk

of injury, possibly even fatal.

In this case, always make sure that the co-

driver's front airbag has been disabled. The

PASSENGER AIR BAG OFF indicator lamp

must be lit.

NEVER use a rearward-facing child restraint on a

seat protected by an ACTIVE FRONT AIRBAG;

DEATH or SERIOUS INJURY to the child can

occur.

If the PASSENGER AIR BAG OFF indicator lamp

is not lit, the front-passenger front airbag is ena-

bled (Y page 40).

Vehicles without the automatic front-

passenger front airbag deactivation

system

If the front-passenger seat of your vehicle is not

equipped with the automatic front-passenger

front airbag deactivation system, this is indica-

ted by a special sticker. The sticker is affixed to

the side of the dashboard on the front-

passenger side. The sticker is visible when you

open the front-passenger door.

If you turn the key to position 2 in the ignition

lock, the PASSENGER AIR BAG OFF and

PASSENGER AIR BAG ON indicator lamps light

up briefly. However, they have no function and

do not indicate that there is an automatic front-

passenger front airbag deactivation system.

In this case, never fit a rearward-facing child

restraint system on the front passenger seat

(Y page 59).

Observe the following information under "Rear-

ward-facing child restraint system"

(Y page 58) and "Forward-facing child

restraint system" (Y page 59) as well as infor-

mation on the suitable positioning of the child

restraint system (Y page 59).

Rearward-facing child restraint system

If it is absolutely necessary to fit a rearward-

facing child restraint system to the front-

passenger seat, always make sure that the

front-passenger front airbag is disabled. Only if

the PASSENGER AIR BAG OFF indicator lamp is

lit continuously (Y page 40) is the front-

passenger front airbag disabled.

Always observe the information on suitable

positioning of the child restraint system

(Y page 59) in addition to the child restraint

system manufacturer's installation and operat-

ing instructions.

Children in the vehicle

Safety

Forward-facing child restraint system

If it is absolutely necessary to fit a forward-

facing child restraint system to the front-

passenger seat, always move the front-

passenger seat as far back as possible. Fully

retract the seat cushion length. The entire base

of the child restraint system must always rest on

the seat cushion of the front-passenger seat.

The backrest of the child restraint system must,

as far as possible, lie flat against the backrest of

the front-passenger seat. The child restraint sys-

tem must not touch the roof or be put under

strain by the head restraint. Adjust the angle of

the seat backrest and the head restraint posi-

tion accordingly. Always make sure that the

shoulder belt strap is correctly routed from the

vehicle belt outlet to the shoulder belt guide on

the child restraint system. The shoulder belt

strap must be routed forwards and downwards

from the vehicle belt outlet. If necessary, adjust

the vehicle belt outlet and the front-passenger

seat accordingly.

Always observe the information on suitable

positioning of the child restraint system

(Y page 59) in addition to the child restraint

system manufacturer's installation and operat-

ing instructions.

Suitable positioning of the child

restraint system

Introduction

Only child restraint systems approved in accord-

ance with ECE standards ECE R44 or ECE R129

(i-Size child restraint systems) are permitted for

use in the vehicle.

For certain child restraint systems in weight cat-

egories II or III, this can mean that the area of

use is restricted. The maximum size setting of

the child restraint system may not be possible

due to possible contact with the roof.

"Universal" category child restraint systems can

be recognised by their orange approval label and

the text "Universal" or an "i-Size" label.

Example: approval label on the child restraint

system

ISOFIX or i-Size child restraint systems of the

“Universal“ category can be used on seats label-

led U, UF, IUF or i-U in accordance with the fol-

lowing tables:

Suitability of the seats for attaching belt-

secured child restraint systems

Suitability of the seats for attaching ISOFIX

child restraint systems

Suitability of the seats for attaching an i-Size

child restraint system

Semi-universal child restraint systems are indi-

cated by the text "semi-universal" on the

approval label. These can be used if the vehicle

and the seat are listed in the child restraint sys-

tem manufacturer's vehicle model list. For more

information, contact the child restraint system

manufacturer or visit their website.

Child restraint system on the front-

passenger seat – if it is absolutely necessary to

secure a child in a child restraint system on the

front-passenger seat:

Always pay attention to the instructions under

"Child restraint system on the front-

passenger seat" (Y page 57).

There you will find instructions on how to cor-

rectly route the shoulder belt strap from the

Children in the vehicle

Safety

vehicle belt outlet to the shoulder belt guide

on the child restraint system (Y page 59).

Move the front-passenger seat as far back as

possible and fully retract the seat cushion

length.

If you secure a child in a forward-facing child

restraint system on the front-passenger seat,

you must also move the front-passenger seat

to the highest position.

Move the backrest to an almost vertical posi-

tion.

The entire base of the child restraint system

must always rest on the seat cushion of the

front-passenger seat. The backrest of the

forward-facing child restraint system must, as

far as possible, be resting on the backrest of

the front-passenger seat. The child restraint

system must not touch the roof or be put

under strain by the head restraint. Adjust the

angle of the seat backrest and the head

restraint position accordingly. Also observe

the child restraint system manufacturer's

installation instructions.

If possible, move the seat cushion angle to the

highest, most vertical position (Y page 98).

Suitability of the seats for attaching a belt-secured child restraint system

If you use a baby car seat of category 0 or 0+ or a rearward-facing child restraint system of category

I on a rear seat, you must adjust the driver's or front-passenger seat so that the seat does not touch

the child restraint system.

If you use a category I, forward-facing child restraint system, you should remove the head restraint

from the respective seat, if possible (Y page 100). The backrest of the child restraint system must,

as far as possible, lie flat against the backrest of the seat.

Make sure that the child's feet do not touch the front seat. If necessary, move the front seat forward

slightly.

For certain child restraint systems in weight categories II or III, this can mean that the area of use

is restricted. The maximum size setting of the child restraint system may not be possible due to

possible contact with the roof.

Always observe the notes in the "Child restraint system" section (Y page 54) and the child restraint

system manufacturer's installation instructions.

When you remove the child restraint system, you must replace the head restraints again immedi-

ately (Y page 99). All vehicle occupants must adjust their head restraints correctly before begin-

ning the journey.

Legend for the table:

XSeat that is unsuitable for children in this weight category.

USuitable for child restraint systems in the "Universal" category that are approved for use in this

weight category.

UF Suitable for forward-facing child restraint systems that belong to the "Universal" category and

are approved for use in this weight category.

LSuitable for child restraint systems as recommended; see the "Recommended child restraint

systems" table (Y page 63). Suitable for semi-universal child restraint systems if the vehicle

and the seat are listed in the child restraint system manufacturer's vehicle model list.

Children in the vehicle

Safety

Weight category Front-passenger seat Rear seat

Front-

passenger

front airbag

enabled

Front-

passenger

front airbag

disabled

Left, right

Centre

up to 10 kg X U, L U, L U, L

up to 13 kg X U, L U, L U, L

9 kg to 18 kg UF, L U, L U, L U, L

15 kg to 25 kg U, L U, L U, L X

III

22 kg to 36 kg U, L U, L U, L X

Suitability of the seats for attaching ISOFIX child restraint systems

If you use a baby car seat of category 0 or 0+ or a rearward-facing child restraint system of category

I on a rear seat, you must adjust the driver's or front-passenger seat so that the seat does not touch

the child restraint system.

If you use a category I, forward-facing child restraint system, you should remove the head restraint

from the respective seat, if possible (Y page 100). The backrest of the child restraint system must,

as far as possible, lie flat against the backrest of the seat.

Make sure that the child's feet do not touch the front seat. If necessary, move the front seat forward

slightly.

For certain child restraint systems in weight categories II or III, this can mean that the area of use

is restricted. The maximum size setting of the child restraint system may not be possible due to

possible contact with the roof.

Always observe the notes in the "Child restraint system" section (Y page 54) and the child restraint

system manufacturer's installation instructions.

When you remove the child restraint system, you must replace the head restraints again immedi-

ately (Y page 99). All vehicle occupants must adjust their head restraints correctly before begin-

ning the journey.

Legend for the table:

XISOFIX position that is not suitable for ISOFIX child restraint systems in this weight category

and/or size category.

IUF Suitable for forward-facing ISOFIX child seat securing systems that belong to the "Universal"

category and are approved for use in this weight category.

IL Suitable for ISOFIX child restraint systems as recommended; see the "Recommended child

restraint systems" table (Y page 63).

The manufacturer will also recommend a suitable ISOFIX child restraint system. For this, your

vehicle and the seat must be listed in the child restraint system manufacturer's model list. For

more information, contact the child restraint system manufacturer or visit their website.

The vehicle is equipped with an automatic front-passenger front airbag deactivation system. The PASSENGER

AIR BAG OFF indicator lamp must be lit.

Child restraint systems with a supporting bracket are not suitable for this seat.

Children in the vehicle

Safety

Weight category Size category Equipment Rear seat left,

right

Carry cot

F ISO/L1 X

G ISO/L2 X

up to 10 kg

up to approximately 6 months

E ISO/R1 IL

up to 13 kg

up to approximately 15 months

E ISO/R1 IL

D ISO/R2 IL

C ISO/R3

9 kg to 18 kg

between approximately 9 months

and 4 years

D ISO/R2 IL

C ISO/R3

B ISO/F2 IUF

B1 ISO/F2X IUF

A ISO/F3 IUF

The child restraint system must not touch the roof or be put under strain by the head restraints.

Adjust the head restraint position accordingly. Also observe the child restraint system manufac-

turer's installation instructions.

Suitability of the seats for attaching an i-Size child restraint system

If you use a baby car seat of category 0 or 0+ or a rearward-facing child restraint system of category

I on a rear seat, you must adjust the driver's or front-passenger seat so that the seat does not touch

the child restraint system.

If you use a category I, forward-facing child restraint system, you should remove the head restraint

from the respective seat, if possible (Y page 100). The backrest of the child restraint system must,

as far as possible, lie flat against the backrest of the seat.

Make sure that the child's feet do not touch the front seat. If necessary, move the front seat forward

slightly.

Always observe the notes in the "Child restraint system" section (Y page 54) and the child restraint

system manufacturer's installation instructions.

When you remove the child restraint system, you must replace the head restraints again immedi-

ately (Y page 99). All vehicle occupants must adjust their head restraints correctly before begin-

ning the journey.

Legend for the table:

XSeat that is unsuitable for i-Size child restraint systems in the "Universal" category.

i‑USuitable for a forward or rearward-facing i-Size child restraint system in the "Universal" cate-

gory.

If you are using a child restraint system of size category C (ISO/R3), make sure that the front seat backrest

does not rest against the child restraint system.

Children in the vehicle

Safety

Seat

Front-

passenger

seat

Rear seat

Left Centre Right

i‑Size child restraint sys-

tems

X i‑U X i‑U

Recommended child restraint systems

General notes

Always observe the information in "Child restraint systems on the front-passenger seat" (Y page 57)

and in "Suitable positioning of the child restraint system" (Y page 59).

You can obtain further information about the correct child restraint system from any Mercedes-Benz

Service Centre.

Recommended child restraint systems for attaching with the vehicle seat belt

Weight category Manufac-

turer

Type Approval num-

ber(E1 ...)

Order number

(A 000 ...)

Category 0: up

to10 kg

up to approx-

imately6 months

Britax Römer BABY SAFE

plus II

04 301146 970 20 00

970 36 00

Category 0+: up

to13 kg

up to approx-

imately15 months

Britax Römer BABY SAFE

plus II

04 301146 970 20 00

970 36 00

Group I:

9 kgto18 kg

between approx-

imately

9 monthsand

4 years

Britax Römer DUO plus 03 301133 970 16 00

970 37 00

Group II/III:

15 kgto36 kg

between approx-

imately4and

12 years

Britax Römer KIDFIX 04 301198 970 19 00

970 38 00

Britax Römer KIDFIX XP 04 301304 970 61 00

Colour code 9H95.

Children in the vehicle

Safety

Recommended "Universal"/"Semi-Universal" category ISOFIX child restraint sys-

tems

Weight cat-

egory

Size cat-

egory

Manufacturer Type Approval

number

(E1 ...)

Order number

Category

0+:

up to13 kg

E Britax Römer BABY SAFE

plus

04 301146 B6 6 86 8224

Category I:

9 kgto18 kg

B1 Britax Römer DUO plus 04 301133 A 000 970 16 00

A 000 970 37 00

Child-proof locks

Important safety notes

WARNING

If children are travelling in the vehicle, they

could:

open doors, thus endangering other people

or road users

exit the vehicle and be caught by oncoming

traffic

operate vehicle equipment and become

trapped, for example

There is a risk of an accident and injury.

Always activate the child-proof locks and

override feature if children are travelling in the

vehicle. When leaving the vehicle, always take

the key with you and lock the vehicle. Never

leave children unattended in the vehicle.

Override feature for:

the rear doors (Y page 65)

the rear side windows (Y page 65)

WARNING

If you leave children unattended in the vehi-

cle, they may be able to set the vehicle in

motion if, for example, they:

release the parking brake

shift the automatic transmission out of park

position P or shift manual transmission into

neutral

start the engine

In addition, they may operate vehicle equip-

ment and become trapped. There is a risk of

an accident and injury.

When leaving the vehicle, always take the key

with you and lock the vehicle. Never leave

children unattended in the vehicle.

WARNING

If persons (particularly children) are exposed

to heat or cold for a prolonged period, there is

a risk of serious or even fatal injuries. Never

leave persons (particularly children) unatten-

ded in the vehicle.

WARNING

If the child restraint system is placed in direct

sunlight, the parts could become very hot.

Children could be suffer burns by touching

these parts, in particular on the metallic parts

of the child restraint system. There is a risk of

injury.

Colour code 9H95.

Children in the vehicle

Safety

If you and your child leave the vehicle, always

make sure that the child restraint system is

not in direct sunlight. Cover it with a blanket,

for example. If the child restraint system has

been exposed to direct sunlight, leave it to

cool down before securing the child in it.

Never leave children unattended in the vehi-

cle.

Child-proof locks for the rear doors

You can secure each door individually with the

child-proof locks on the rear doors. A door

secured with a child-proof lock cannot be

opened from inside the vehicle. When the vehi-

cle is unlocked, the door can be opened from the

outside.

To activate: press the child-proof lock lever

up in the direction of arrow :.

Make sure that the child-proof lock is working

properly.

To deactivate: press the child-proof lock

lever down in the direction of arrow ;.

Override feature for the rear side win-

dows

To enable/disable: press button :.

If indicator lamp ; is lit, operation of the rear

side windows is disabled. Operation is only

possible using the switches in the driver's

door. If indicator lamp ; is off, operation is

possible using the switches in the rear com-

partment.

Pets in the vehicle

WARNING

If you leave animals unsupervised or unse-

cured in the vehicle, they may push a button

or a switch, for example.

They could:

activate vehicle equipment and become

trapped, for example

switch vehicle systems on or off, thus

endangering other road users

In the event of an accident, sudden braking or

abrupt changes of direction, unsecured ani-

mals could be flung around the vehicle, injur-

ing the vehicle occupants. There is a risk of an

accident and injury.

Never leave animals unattended in the vehi-

cle. Always secure animals correctly during a

journey, e.g. in an animal transport box.

Driving safety systems

Driving safety systems overview

In this section, you will find information about

the following driving safety systems:

ABS (Anti-lock Braking System)

(Y page 66)

BAS (Brake Assist System) (Y page 66)

Active Brake Assist (Y page 67)

Adaptive brake lights (Y page 69)

ESP

(Electronic Stability Program)

(Y page 69)

EBD (electronic brake force distribution)

(Y page 72)

ADAPTIVE BRAKE (Y page 73)

STEER CONTROL (Y page 73)

Driving safety systems

Safety

Important safety notes

If you fail to adapt your driving style or if you are

inattentive, the driving safety systems can nei-

ther reduce the risk of an accident nor override

the laws of physics. Driving safety systems are

merely aids designed to assist driving. You are

responsible for maintaining the distance to the

vehicle in front, for vehicle speed, for braking in

good time and for staying in lane. Always adapt

your driving style to suit the prevailing road and

weather conditions and maintain a safe distance

from the vehicle in front. Drive carefully.

The driving safety systems described work as

effectively as possible only when there is ade-

quate contact between the tyres and the road

surface. Please pay special attention to the

notes on tyres, recommended minimum tyre

tread depths etc. (Y page 310).

In wintry driving conditions, always use winter

tyres (M+S tyres) and, if necessary, snow

chains. Only in this way will the driving safety

systems described in this section work as effec-

tively as possible.

ABS (Anti-lock Braking System)

General notes

ABS regulates brake pressure in such a way that

the wheels do not lock when you brake. This

allows you to continue steering the vehicle when

braking.

The ! ABS warning lamp in the instrument

cluster lights up when the ignition is switched

on. It goes out when the engine is running.

ABS works from a speed of about 8 km/h,

regardless of road-surface conditions. ABS

works on slippery surfaces, even when you only

brake gently.

Important safety notes

Observe the "Important safety notes" sec-

tion (Y page 66).

WARNING

If ABS is faulty, the wheels could lock when

braking. The steerability and braking charac-

teristics may be severely impaired. Addition-

ally, further driving safety systems are deac-

tivated. There is an increased danger of skid-

ding and accidents.

Drive on carefully. Have ABS checked imme-

diately at a qualified specialist workshop.

If ABS is malfunctioning, other systems, includ-

ing driving safety systems, will also become

inoperative. Observe the information on the ABS

warning lamp (Y page 250) and display mes-

sages which may be shown in the instrument

cluster (Y page 217).

Braking

If ABS intervenes: continue to depress the

brake pedal with force until the braking sit-

uation is over.

To make a full brake application: depress

the brake pedal with full force.

If ABS intervenes when braking, you will feel a

pulsing in the brake pedal.

The pulsating brake pedal can be an indication

of hazardous road conditions; this serves as a

reminder to take extra care while driving.

BAS (Brake Assist)

General notes

BAS operates in emergency braking situations.

If you depress the brake pedal quickly, BAS

automatically boosts the braking force, thus

shortening the stopping distance.

Important safety notes

Read the "Important safety notes" section

(Y page 66).

WARNING

If BAS is malfunctioning, the braking distance

in an emergency braking situation is

increased. There is a risk of accident.

In an emergency braking situation, depress

the brake pedal with full force. ABS prevents

the wheels from locking.

Driving safety systems

Safety

Braking

Keep the brake pedal depressed firmly until

the emergency braking situation is over.

ABS prevents the wheels from locking.

The brakes will function as usual once you

release the brake pedal. BAS is deactivated.

Active Brake Assist

General information

Read the "Important safety notes" section

(Y page 66).

Active Brake Assist consists of a distance warn-

ing function with an autonomous braking func-

tion and braking assistance appropriate to the

situation.

Active Brake Assist can help you to minimise the

risk of a collision with the vehicle travelling in

front or reduce the effects of such a collision.

If Active Brake Assist detects that there is a risk

of collision, you will be warned visually and

acoustically. If you do not react to the visual and

audible collision warning, autonomous braking

can be initiated in critical situations. If you apply

the brake yourself in a critical situation, Adap-

tive Brake Assist supports you with braking

assistance appropriate to the situation.

Important safety notes

Detection of hazardous situations can be par-

ticularly impaired by:

dirt on the sensors or obscured sensors

snow or heavy rain

interference by other radar sources

strong radar reflections, for example, in multi-

storey car parks

a narrow vehicle travelling in front, e.g. a

motorcycle

a vehicle travelling in front on a different line

new vehicles or after servicing is carried out

on the Active Brake Assist system

Read the important safety notes in the "Run-

ning-in notes" section (Y page 132).

Following damage to the front end of the vehicle,

have the configuration and operation of the

radar sensor checked at a qualified specialist

workshop. This also applies to collisions at low

speeds where no visible damage to the front of

the vehicle is apparent.

Activating/deactivating

Active Brake Assist is active after every ignition

cycle.

You can activate or deactivate Active Brake

Assist (Y page 209) in the on-board computer.

When the system is deactivated, the distance

warning function and the autonomous braking

function are also deactivated.

If Active Brake Assist is deactivated, the æ

symbol appears in the assistance graphic dis-

play.

Distance warning function

General information

The distance warning function can help you to

minimise the risk of collision with the vehicle in

front or reduce the effects of such a collision. If

the distance warning function detects a risk of

collision with the vehicle in front, you will be

warned visually and audibly.

Important safety notes

Observe the "Important safety notes" sec-

tion for driving safety systems (Y page 66).

WARNING

The distance warning function does not react:

to people or animals

to oncoming vehicles

to crossing traffic

when cornering

Thus, the distance warning function cannot

provide a warning in all critical situations.

There is a risk of an accident.

Always pay careful attention to the traffic sit-

uation and be ready to brake.

WARNING

The distance warning function cannot always

clearly identify objects and complex traffic

situations.

Driving safety systems

Safety

In such cases, the distance warning function

may:

give an unnecessary warning

not give a warning

There is a risk of an accident.

Always pay careful attention to the traffic sit-

uation; do not rely on the distance warning

function alone.

Function

The distance warning function issues a warning

at speeds:

of approximately 30 km/h or more if, over

several seconds, the distance to the vehicle

travelling in front is insufficient for the driving

speed. The · distance warning lamp will

then light up on the instrument cluster.

of approximately 7 km/h or more if you rap-

idly approach a vehicle in front. An intermit-

tent warning tone will then sound and the

· distance warning lamp will light up on

the instrument cluster.

Brake immediately to increase the distance

from the vehicle in front.

Take evasive action provided it is safe to do

so.

Due to the nature of the system, certain com-

plex but non-critical driving conditions may also

cause the system to display a warning.

With the help of the radar sensor system, the

distance warning function can detect obstacles

that are in the path of your vehicle for an exten-

ded period of time.

Up to a speed of approximately 70 km/h, the

distance warning function can also react to sta-

tionary obstacles, such as stopped or parked

vehicles.

Autonomous braking function

If the driver does not react to the distance warn-

ing signal in a critical situation, Active Brake

Assist can assist the driver with the autonomous

braking function.

The autonomous braking function:

gives the driver more time to react to critical

driving situations

can help the driver to avoid an accident or

reduces the effects of an accident

Vehicles without Distance Pilot DISTRONIC:

the autonomous braking function is available in

the following speed ranges:

7–105 km/h for moving objects

7 - 50 km/h for stationary objects

Vehicles with Distance Pilot DISTRONIC: the

autonomous braking function is available in the

following speed ranges:

7 - 200 km/h for moving objects

7 - 50 km/h for stationary objects

Due to the nature of the system, complex but

non-critical driving conditions may also cause

the autonomous braking function to engage.

If the autonomous braking function demands

particularly high braking force, preventative

passenger protection measures (PRE-SAFE

)

are activated simultaneously (Y page 53).

Braking assistance appropriate to the

situation

General information

Read the "Important safety notes" section

(Y page 66).

With the help of the radar sensor system, Adap-

tive Brake Assist can detect obstacles that are in

the path of your vehicle for an extended period

of time.

If Adaptive Brake Assist detects a risk of colli-

sion with the vehicle in front, it calculates the

brake pressure necessary to avoid a collision. If

you apply the brakes forcefully, the braking

assistance adapts to the situation and automat-

ically increases the brake pressure to a degree

appropriate to the traffic situation.

Braking assistance appropriate to the situation

provides braking assistance in hazardous situa-

tions at speeds above 7 km/h. It uses the radar

sensor system to assess the traffic situation.

Braking assistance appropriate to the situation

is capable of reacting to moving objects which

have already been recognised as such at least

once over the period of observation, up to vehi-

cle speeds of around 250 km/h.

Driving safety systems

Safety

Braking assistance appropriate to the situation

can also detect stationary objects, up to vehicle

speeds of around 70 km/h.

If braking assistance appropriate to the situa-

tion demands particularly high brake pressure,

preventative passenger protection measures

(PRE-SAFE

) are triggered simultaneously

(Y page 53).

Keep the brake pedal depressed until the

emergency braking situation is over.

ABS prevents the wheels from locking.

The brakes will work normally again if:

you release the brake pedal

a danger of collision with the vehicle in front

no longer exists

no obstacle is detected in front of your vehicle

Braking assistance appropriate to the situation

is then deactivated.

Important safety notes

Observe the "Important safety notes" sec-

tion for driving safety systems (Y page 66).

WARNING

Adaptive Brake Assist does not react:

to people or animals

to oncoming vehicles

to crossing traffic

when cornering

As a result, Adaptive Brake Assist may not

intervene in all critical conditions. The risk of

an accident remains.

Always pay careful attention to the traffic sit-

uation and be ready to brake.

WARNING

Adaptive Brake Assist cannot always clearly

identify objects and complex traffic situa-

tions.

In such cases, Adaptive Brake Assist might:

intervene unnecessarily

not intervene

The risk of an accident remains.

Always pay careful attention to the traffic sit-

uation and be ready to brake. Terminate the

intervention in a non-critical driving situation.

Due to the nature of the system, complex but

non-critical driving conditions may also cause

Active Brake Assist to intervene.

Even if Active Brake Assist is not available due to

a malfunction in the radar sensor system, the

brake system is still available with full brake

boosting effect and BAS.

Adaptive brake lights

The adaptive brake lights warn following traffic

in an emergency braking situation by:

flashing brake lamps

the hazard warning lamps are activated

If you brake sharply from a speed of more than

50 km/h or if braking is assisted by BAS or BAS

PLUS, the brake lamps flash rapidly. In this way,

traffic travelling behind you is warned in an even

more noticeable manner.

If you brake sharply from a speed of more than

70 km/h to a standstill, the hazard warning

lamps are activated automatically. If the brakes

are applied again, the brake lamps light up con-

tinuously. The hazard warning lamps switch off

automatically if you travel faster than 10 km/h.

You can also switch off the hazard warning

lamps using the hazard warning button

(Y page 109).

ESP

(Electronic Stability Program)

General notes

Observe the "Important safety notes" sec-

tion (Y page 66).

ESP

monitors driving stability and traction, i.e.

power transmission between the tyres and the

road surface.

If ESP

detects that the vehicle is deviating from

the direction desired by the driver, one or more

wheels are braked to stabilise the vehicle. The

engine output is also modified to keep the vehi-

cle on the desired course within physical limits.

ESP

assists the driver when pulling away on

wet or slippery roads. ESP

can also stabilise

the vehicle during braking.

Driving safety systems

Safety

ETS/4ETS (Electronic Traction System)

Observe the "Important safety notes" sec-

tion (Y page 66).

ETS traction control is part of ESP

. On vehicles

with 4MATIC, 4ETS is part of ESP

Traction control brakes the drive wheels indi-

vidually if they spin. This enables you to pull

away and accelerate on slippery surfaces, e.g. if

the road surface is slippery on one side. In addi-

tion, more drive torque is transferred to the

wheel or wheels with traction.

Traction control remains active if you deactivate

ESP

Important safety notes

Observe the "Important safety notes" sec-

tion (Y page 66).

WARNING

If ESP

is malfunctioning, ESP

is unable to

stabilise the vehicle. In addition, other driving

safety systems are switched off. This increa-

ses the risk of skidding and an accident.

Drive on carefully. Have ESP

checked at a

qualified specialist workshop.

Vehicles without 4MATIC: when towing your

vehicle with the front axle raised, it is important

that you observe the notes on ESP

(Y page 306).

If the å ESP

OFF warning lamp lights up

continuously, ESP

is deactivated.

If the ÷ ESP

warning lamp and the å

warning lamp are lit continuously, ESP

is not

available due to a malfunction.

Read the information on warning lamps

(Y page 252) and display messages that may be

shown in the instrument cluster (Y page 217).

Use only wheels with the recommended tyre

sizes. Only then will ESP

function properly.

Characteristics of ESP

General information

If the ÷ ESP warning lamp goes out before

you begin the journey, ESP

is automatically

active.

If ESP

intervenes, the ÷ ESP

warning lamp

flashes on the instrument cluster.

If ESP

intervenes:

Do not deactivate ESP

under any circum-

stances.

When pulling away, depress the accelerator

pedal only as far as is necessary.

Adapt your driving style to suit the prevailing

road and weather conditions.

ECO start/stop function

The ECO start/stop function switches the

engine off automatically if the vehicle stops

moving. When pulling away again, the engine

starts automatically. ESP

remains in its previ-

ously selected status. Example: if ESP

was

deactivated before the engine was switched off,

ESP

remains deactivated when the engine is

switched on again.

Activating/deactivating ESP

(except

Mercedes‑AMG vehicles)

Important safety notes

Read the "Important safety notes" section

(Y page 66).

You can select between the following ESP

sta-

tuses:

ESP

is activated

ESP

is deactivated

WARNING

If you deactivate ESP

, ESP

no longer sta-

bilises the vehicle. There is an increased risk

of skidding and an accident.

Only deactivate ESP

in the situations descri-

bed in the following.

The spinning of the wheels results in a cut for

better traction on loose surfaces.

It may be best to deactivate ESP

in the follow-

ing situations:

when snow chains are used

in deep snow

on sand or gravel

Activate ESP

as soon as the situations

described above no longer apply. ESP

will

otherwise not be able to stabilise the vehicle

Driving safety systems

Safety

if the vehicle starts to skid or a wheel starts to

spin.

Activating/deactivating ESP

You can deactivate or activate ESP

via the on-

board computer (Y page 209).

ESP

deactivated:

The å ESP

OFF warning lamp on the instru-

ment cluster lights up.

ESP

activated:

The å ESP

OFF warning lamp on the instru-

ment cluster goes out.

Characteristics when ESP

is deactivated

If ESP

is deactivated and one or more wheels

start to spin, the ÷ ESP

warning lamp in the

instrument cluster flashes. In such situations,

ESP

will not stabilise the vehicle.

If you deactivate ESP

ESP

no longer improves driving stability

engine torque is no longer limited and the

drive wheels may start to spin

traction control is still activated

PRE-SAFE

is no longer available; it is not

activated even if you brake firmly with assis-

tance from ESP

STEER CONTROL is no longer active

ESP

still provides support when you brake

firmly.

Deactivating/activating ESP

(Mercedes‑AMG vehicles)

Important safety notes

Read the "Important safety notes" section

(Y page 66).

You can select between the following ESP

sta-

tuses:

ESP

is activated

SPORT handling mode is activated

ESP

is deactivated

ESP

is activated every time the engine is star-

ted, regardless of whether ESP

was deactiva-

ted before the engine was switched off.

WARNING

When SPORT handling mode is activated,

there is a greater risk of skidding and acci-

dents.

Only activate SPORT handling mode in the sit-

uations described in the following.

WARNING

If you deactivate ESP

, ESP

no longer sta-

bilises the vehicle. There is an increased risk

of skidding and an accident.

Only deactivate ESP

in the situations descri-

bed in the following.

In the following situations, it may be better to

activate SPORT handling mode or deactivate

ESP

when snow chains are used

in deep snow

on sand or gravel

on specially designated roads when the vehi-

cle's own oversteering and understeering

characteristics are desired

Driving in SPORT handling mode or without

ESP

requires a highly qualified and experi-

enced driver.

Activate ESP

as soon as the situations

described above no longer apply. ESP

will

otherwise not be able to stabilise the vehicle

if the vehicle starts to skid or a wheel starts to

spin.

Activating/deactivating ESP

To activate SPORT handling mode: briefly

press button :.

The M SPORT handling mode warning

lamp on the instrument cluster lights up. The

Driving safety systems

Safety

SPORT handling modeSPORT handling mode message appears in

the multifunction display.

To deactivate SPORT handling mode:

briefly press button :.

The M SPORT handling mode warning

lamp on the instrument cluster goes out.

To deactivate ESP

: press button : until

the å ESP

OFF warning lamp lights up in

the instrument cluster.

The ÷

OFFOFF message appears in the multi-

function display.

To activate ESP

: briefly press button :.

The å ESP

OFF warning lamp on the

instrument cluster goes out. The ÷ ESP

ONON message appears in the multifunction dis-

play.

Characteristics when SPORT handling

mode is activated

If SPORT handling mode is activated and one or

more wheels start to spin, the ÷ ESP

warn-

ing lamp on the instrument cluster flashes. In

such situations, ESP

will stabilise the vehicle

only to a limited degree.

When SPORT handling mode is activated:

ESP

improves driving stability only to a limi-

ted degree

traction control is still activated

the engine's torque is only restricted to a limi-

ted degree and the drive wheels may start to

spin

The spinning of the wheels results in a cut for

better traction on loose surfaces.

ESP

still provides support when you brake

firmly.

Characteristics when ESP

is deactivated

If ESP

is deactivated and one or more wheels

start to spin, the ÷ ESP

warning lamp in the

instrument cluster does not flash. In such situa-

tions, ESP

will not stabilise the vehicle.

If you deactivate ESP

ESP

no longer improves driving stability

engine torque is no longer limited and the

drive wheels may start to spin

The spinning of the wheels results in a cut for

better traction on loose surfaces.

traction control is still activated

Active Brake Assist is no longer available; it is

not activated even if you brake firmly with

assistance from ESP

PRE-SAFE

is no longer available; it is not

activated even if you brake firmly with assis-

tance from ESP

ESP

still provides support when you brake

firmly.

ESP

trailer stabilisation

General notes

If your vehicle/trailer combination begins to

lurch, ESP

assists you in this situation. ESP

slows the vehicle down by braking and limiting

the engine output until the vehicle/trailer com-

bination has stabilised.

Important safety notes

WARNING

If road and weather conditions are poor,

trailer stabilisation will not be able to prevent

the vehicle/trailer combination from swerv-

ing. Trailers with a high centre of gravity can

tip over before ESP

can detect this. There is

a risk of an accident.

Always adapt your driving style to the prevail-

ing road and weather conditions.

If your vehicle/trailer combination begins to

lurch, you can only stabilise the vehicle/trailer

combination by depressing the brake firmly.

ESP

trailer stabilisation is active above speeds

of approximately 65 km/h.

ESP

trailer stabilisation does not work if ESP

is deactivated or disabled because of a malfunc-

tion.

EBD (electronic brake force distribu-

tion)

General notes

EBD monitors and controls the brake pressure

on the rear wheels to improve driving stability

while braking.

Driving safety systems

Safety

Important safety notes

Read the "Important safety notes" section

(Y page 66).

WARNING

If EBD is malfunctioning, the rear wheels can

lock, e.g. under full braking. This increases the

risk of skidding and an accident.

You should therefore adapt your driving style

to the different handling characteristics. Have

the brake system checked at a qualified spe-

cialist workshop.

Observe information regarding indicator and

warning lamps (Y page 250) as well as display

messages (Y page 219).

ADAPTIVE BRAKE

ADAPTIVE BRAKE enhances braking safety and

offers increased braking comfort. In addition to

the braking function, ADAPTIVE BRAKE also has

the HOLD function (Y page 172) and hill start

assist (Y page 136).

STEER CONTROL

General information

STEER CONTROL helps you by transmitting a

noticeable steering force to the steering wheel

in the direction required for vehicle stabilisation.

This steering support is provided in particular if:

both right wheels or both left wheels are on a

wet or slippery road surface when you brake

the vehicle begins to skid

Important safety notes

Read the "Important safety notes" section

(Y page 66).

No steering support is provided from STEER

CONTROL, if:

ESP

is malfunctioning

the steering is malfunctioning

If ESP

is malfunctioning, you will be assisted

further by the electrical power steering.

Protection against theft

Immobiliser

The immobiliser prevents your vehicle from

being started without the correct key.

To activate with the key: remove the key

from the ignition lock.

To activate with KEYLESS-GO start func-

tion or KEYLESS-GO: switch the ignition off

and open the driver's door.

To deactivate: switch on the ignition.

When leaving the vehicle, always take the key

with you and lock the vehicle. Anyone can start

the engine if a valid key has been left inside the

vehicle.

The immobiliser is always deactivated when

you start the engine.

ATA (Anti-Theft Alarm system)

To prime: lock the vehicle with the key or

KEYLESS-GO.

Indicator lamp : flashes. The alarm system

is primed after approximately 15 seconds.

To deactivate: unlock the vehicle with the

key or KEYLESS-GO.

Insert the key into the ignition lock.

A visual and audible alarm is triggered if the

alarm system is primed and you open:

a door

the vehicle with the emergency key element

the boot lid

the bonnet

Protection against theft

Safety

To stop the alarm with the key: press the

% or & button on the key.

The alarm stops.

Vehicles with KEYLESS-GO start function

or KEYLESS-GO: remove the Start/Stop but-

ton from the ignition lock (Y page 133).

Insert the key into the ignition lock.

The alarm stops.

To stop the alarm using KEYLESS-GO:

grasp the outside door handle. The key must

be outside the vehicle.

The alarm stops.

Press the Start/Stop button on the dash-

board. The key must be inside the vehicle.

The alarm stops.

The alarm does not switch off, even if you close

the open door that has triggered it, for example.

If the alarm stays on for more than

30 seconds, the Mercedes‑Benz emergency

call system automatically sends a message to

the Customer Centre. This is done by means

of a text message or a data connection.

The emergency call system sends a message

or establishes a data connection provided

that:

you have subscribed to the Mercedes‑Benz

emergency call system

the Mercedes‑Benz emergency call system

has been activated properly

the necessary mobile phone network is

available

Tow-away protection

Function

An audible and visual alarm is triggered if your

vehicle's angle of inclination is altered while

tow-away protection is primed. This can occur if

the vehicle is jacked up on one side, for exam-

ple.

Switching on

Make sure that:

the doors are closed

the boot lid is closed

Only then is tow-away protection activated.

Lock the vehicle with the key or KEYLESS-GO.

Tow-away protection is activated after

approximately 60 seconds.

Switching off

Unlock the vehicle with the key or KEYLESS-

GO.

Insert the key into the ignition lock.

Tow-away protection is switched off automat-

ically.

Deactivating

Remove the key from the ignition lock.

Vehicles with KEYLESS-GO start function

or KEYLESS-GO: switch off the engine using

the Start/Stop button and open the driver's

door.

Press button :.

Indicator lamp ; lights up briefly.

Lock the vehicle with the key or KEYLESS-GO.

Tow-away protection is deactivated.

Tow-away protection remains deactivated until:

the vehicle is unlocked again

a door is opened and closed again and

the vehicle is locked again

Protection against theft

Safety

To prevent a false alarm, deactivate tow-away

protection if you lock your vehicle and it:

is being transported

is being loaded onto a ferry or car transporter,

for example

is parked on a movable surface, e.g. in a split-

level garage

Interior motion sensor

Function

When the interior motion sensor is switched on,

a visual and audible alarm is triggered if move-

ment is detected in the vehicle interior. This can

occur if someone reaches into the vehicle inte-

rior, for example.

Switching on

Make sure that:

the side windows are closed

the panorama sliding sunroof is closed

there are no objects, e.g. mascots, hanging

on the rear-view mirror or on the grab han-

dles on the roof trim

This will prevent false alarms.

Make sure that:

the doors are closed

the panorama sliding sunroof is closed

the boot lid is closed

Only then is the interior motion sensor acti-

vated.

Lock the vehicle with the key or KEYLESS-GO.

The interior motion sensor is primed after

approximately 30 seconds.

Switching off

Unlock the vehicle with the key or KEYLESS-

GO.

Insert the key into the ignition lock.

Press the Start/Stop button.

The key must be in the vehicle.

The interior motion sensor is automatically

switched off.

Deactivating

Remove the key from the ignition lock.

Vehicles with KEYLESS-GO start function

or KEYLESS-GO: switch off the engine using

the Start/Stop button and open the driver's

door.

Press button :.

Indicator lamp ; flashes several times in

rapid succession.

Lock the vehicle with the key or KEYLESS-GO.

The interior motion sensor is deactivated.

The interior motion sensor remains deactivated

until:

the vehicle is unlocked again and

a door is opened and closed again and

the vehicle is locked again

To prevent a false alarm, deactivate the interior

motion sensor if you lock your vehicle and:

people or animals remain in the vehicle

the panorama sliding sunroof remains open

the side windows remain open

UK only: your vehicle is equipped with a

double-lock function. The doors cannot be

opened from the inside if the vehicle has been

locked with the key (Y page 83). Deactivate

the interior motion sensor before you lock the

vehicle with the key. The doors can then be

opened from the inside after the vehicle has

been locked from the outside with the key.

Observe the "Important safety notes"

(Y page 83).

Protection against theft

Safety

Safety for Your Mercedes CLA 4 Door First Generation (2013-2018)

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