Get Safety Guide for Mercedes A Class 4 Door Third Generation (2012-2017)

39

Useful information .............................. 40

Panic alarm .......................................... 40

Occupant safety .................................. 40

Children in the vehicle ........................ 57

Pets in the vehicle ............................... 69

Driving safety systems ....................... 69

Protection against theft ..................... 77

Occupant safety

40

Useful information

Occupant safety

Introduction to the restraint system

i This Owner's Manual describes all mod-

els, series and optional equipment for your

vehicle that were available at the time of

going to press. National variations are pos-

sible. Note that your vehicle may not be

equipped with all of the functions descri-

bed. This is also the case for systems and

functions relevant to safety.

The restraint system can reduce the risk of

vehicle occupants coming into contact with

parts of the vehicle's interior in the event of

an accident. The restraint system can also

reduce the forces to which vehicle occupants

are subjected during an accident.

The restraint system comprises:

i Read the information on qualified special-

ist workshops: (Y page 24).

R

Seat belt system

Airbags

R

Child restraint system

R

Child seat securing systems

Panic alarm

The components of the restraint system work

in conjunction with each other. They can only

deploy their protective function if all vehicle

occupants always:

R

fasten their seat belts correctly

(Y page 44)

R

adjust their seat and head restraint prop-

erly (Y page 107).

As the driver, you also have to make sure that

the steering wheel is adjusted correctly.

Observe the information relating to the cor-

rect driver's seat position (Y page 106).

You also have to make sure that an airbag can

inflate properly if deployed (Y page 46).

An airbag supplements a correctly fastened

seat belt. As an additional safety device, the

airbag increases the level of protection for

vehicle occupants in the event of an accident.

For example, if the protection of the seat belt

is sufficient in an accident, the airbags are not

deployed. In the event of an accident, only the

airbags that increase protection in the rele-

vant accident situation are deployed. How-

ever, seat belts and airbags generally do not

protect against objects penetrating the vehi-

cle from the outside.

X

To activate: press and hold the

! button : for approx. one second.

A visual and audible alarm is triggered if the

alarm system is primed.

To deactivate: press the ! button :

again.

X

or

X

Insert the key into the ignition lock.

or, on vehicles with KEYLESS-GO start func-

tion or KEYLESS‑GO

X

Press the Start/Stop button.

The key must be in the vehicle.

The panic alarm function is only available in

certain countries.

Information on the restraint system operation

can be found under "Triggering of belt ten-

sioners and airbags" (Y page 55).

Occupant safety

41

For more information about children travel-

ling with you in the vehicle, see "Children in

the vehicle" (Y page 57).

WARNING

G

If the restraint system is malfunctioning,

restraint system components may be trig-

gered unintentionally or might not be trig-

gered at all in the event of an accident with a

high rate of vehicle deceleration. This can

effect belt tensioners or airbags, for example.

There is an increased risk of serious or even

fatal injuries.

Important safety notes

WARNING

G

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

Have the restraint system checked and

repaired immediately at a qualified specialist

workshop.

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.

PASSENGER AIRBAG indicator lamp

If it is necessary to modify an airbag system to

accommodate a person with disabilities, con-

tact a Mercedes-Benz Service Centre for

details.

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 run-

ning. Therefore, malfunctions can be detec-

ted in good time.

The 6 restraint system warning lamp in

the instrument cluster lights up when the igni-

tion is switched on. It goes out no later than a

few seconds after the vehicle is started. The

components of the restraint system are in

operational readiness.

PASSENGER AIR BAG ON indicator lamp :

and PASSENGER AIR BAG OFF indicator

lamp ; are part of the automatic deactiva-

tion system of the front-passenger front air-

bag.

The indicator lamps display the status of the

front-passenger front airbag.

R

PASSENGER AIR BAG ON lights up: the

front-passenger front airbag is enabled. If,

in the event of an accident, all deployment

criteria are met, the front-passenger front

airbag is deployed.

A malfunction has occurred if the 6

restraint system warning lamp:

R

does not light up after the ignition is

R

PASSENGER AIR BAG OFF lights up: the

switched on

front-passenger front airbag is disabled. It

will then not be deployed in the event of an

accident.

R

does not go out after a few seconds with

the engine running

lights up again while the engine is running

R

Z

Occupant safety

42

Depending on the person in the front-

vehicle occupants in the event of a collision or

passenger seat, the front-passenger front air- if the vehicle overturns. This reduces the risk

bag must either be disabled or enabled; see of vehicle occupants coming into contact with

the following points. You must make sure of parts of the vehicle interior or being ejected

this both before and during a journey.

from it. The seat belt also helps to keep the

vehicle occupants in the best position in rela-

tion to the airbag being deployed.

R

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 imperative to observe the notes on the

"Automatic front-passenger front airbag

deactivation system" (Y page 49) and on

"Children in the vehicle" (Y page 57).

The seat belt system consists of:

R

seat belts

R

belt tensioners for the front seat belts and

the outer seat belts in the rear

R

belt force limiters for the front seat belts

and the outer seat belts in the rear

R

Children in a forward-facing child

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 vehi-

cle occupants back in the direction of the seat

backrest.

The belt tensioner does not, however, correct

an incorrect seat position or correct the rout-

ing 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.

restraint system: depending on the instal-

led child restraint system and the age and

size of the child, the front-passenger front

airbag is either disabled or enabled. There-

fore, it is imperative to observe the notes

on the "Automatic front-passenger front

airbag deactivation system" (Y page 49)

and on "Children in the vehicle"

(Y page 57).

R

All other persons: the PASSENGER AIR

BAG ON indicator lamp must be lit. The

front-passenger front airbag is enabled.

Depending on the build 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.

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

occupants are subjected during an accident.

It is imperative to observe the notes on the

"Automatic front-passenger front airbag

deactivation system" (Y page 49) as well

as on "Seat belts" (Y page 42) and "Air-

bags" (Y page 46). There you can also find

information on the correct seat position.

! 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 tensioner could be triggered in the

event of an accident and would have to be

replaced.

Important safety notes

Seat belts

WARNING

G

Introduction

The seat belt cannot perform its intended pro-

tective function if it is not fastened correctly.

Also, an improperly fastened seat belt can

A correctly worn seat belt is the most effec-

tive means of restraining the movement of

Occupant safety

43

front airbag deactivation system

(Y page 49)

always observe the instructions and safety

notes on "Children in the vehicle" in this

Owner's Manual (Y page 57) in addition

to the child restraint system manufactur-

er's installation instructions

cause additional injuries in the event of an

accident, sudden braking or abrupt changes

of direction. There is an increased risk of

injury, possibly even fatal.

Always make sure that all vehicle occupants

are wearing their seat belt properly and are

seated correctly.

R

WARNING

G

Seat belts cannot protect as intended, if:

WARNING

G

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.

R

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

R

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 fail to be deployed when

required. There is an increased risk of injury,

possibly even fatal.

WARNING

G

Persons under 1.50 m tall cannot wear the

seat belts correctly without a suitable, addi-

tional restraint system. The seat belt cannot

perform its intended protective function if it is

not fastened correctly. Also, an improperly

fastened seat belt can cause additional inju-

ries in the event of an accident, sudden brak-

ing or abrupt changes of direction. There is an

increased risk of injury, possibly even fatal.

Never modify safety belts, seat belt tension-

ers, 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 quali-

fied specialist workshop.

Mercedes-Benz recommends that you only

use seat belts which have been approved

specifically for your vehicle by Mercedes-

Benz. Otherwise, your vehicle's general oper-

ating permit could be invalidated.

Secure persons less than 1.50 m tall in a suit-

able restraint system.

If a child younger than twelve years old and

under 1.50 m in height is travelling in the

vehicle:

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 system cannot provide the best level

of protection.

R

always secure the child in a child restraint

system suitable for this Mercedes-Benz

vehicle. The child restraint system must be

appropriate to the age, weight and size of

the child.

WARNING

G

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

R

always observe the instructions and safety

notes on the automatic front-passenger

Z

Occupant safety

44

Infants and children must never travel sit-

ting on the lap of a vehicle occupant. In the

event of an accident, they could be crushed

between the vehicle occupant and seat

belt.

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.

R

objects are never secured with a seat belt if

the seatbeltis alsobeing usedby one ofthe

vehicle's occupants

Also ensure that no objects are placed

between a person and the seat. e.g. a cush-

ion.

Correct seat belt use

Observe the safety notes on the seat belt

(Y page 42).

All vehicle occupants must be wearing the

seat belt correctly before beginning the jour-

ney. Also make sure that all vehicle occu-

pants are always wearing the seat belt cor-

rectly while the vehicle is in motion.

When fastening the seat belt, always make

sure that:

Seat belts are only intended to secure and

restrain vehicle occupants. Always observe

the "Loading guidelines" for securing objects,

luggage or loads (Y page 306).

Fastening and adjusting the seat belts

R

the seat belt tongue is only inserted into the

belt buckle belonging to that seat

the seat belt is tight across your body

Avoid wearing bulky clothing, e.g. a winter

coat.

Observe the safety notes on the seat belt

(Y page 42) and the information on the cor-

rect use of the seat belt (Y page 44).

R

the seat belt is not twisted

Only then can forces which occur be dis-

tributed across the surface of the seat belt.

R

the shoulder section of the belt is always

routed across the centre of your shoulder

The shoulder section of the seat belt should

not touch your neck nor be routed under

your arm. If possible, adjust the seat belt to

the appropriate height.

R

the lap belt passes across your lap as

tightly and as low down as possible

The lap belt must always be routed across

your hip joints and never across your abdo-

men. This applies particularly to pregnant

women. If necessary, press the lap belt

down into your hip joints and pull tight with

the shoulder section of the belt.

the seat belt is not routed across sharp,

pointed or fragile objects

If you have such items located on or in your

clothing, e.g. pens, keys or spectacles,

store these in a suitable place.

Basic illustration

X

Adjust the seat (Y page 106).

The seat backrest must be in an almost

vertical position.

R

X

Pull the seat belt smoothly from belt outlet

=.

X

Engage seat belt tongue ; in belt

buckle :.

The seat belt on the driver's seat and the

front-passenger seat may be tightened

R

only one person is using a seat belt

Occupant safety

45

automatically; see "Belt adjustment"

(Y page 45).

X

If necessary, pull upwards on the shoulder

section of the seat belt to tighten the belt

across your body.

Basic illustration

The shoulder section of the seat belt must

always be routed across the centre of the

shoulder. Adjust the belt outlet if necessary.

X

Press release button :, hold belt

tongue ; firmly and guide it back towards

belt outlet =.

X

To raise: slide the belt outlet upwards.

The belt outlet will engage in various posi-

tions.

Seat belt adjustment

The seat-belt adjustment is an integral part of

the PRE-SAFE^®convenience function. This

function adjusts the driver's and front-

passenger seat belt to the upper body of the

occupants.

X

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.

X

The belt strap is tightened slightly when:

R

the seat belt tongue is engaged in the belt

buckle and

Releasing the 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. Dam-

aged seat belts can no longer fulfil their

protective function and must be replaced.

Visit a qualified specialist workshop.

R

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 adjusting.

You can switch the seat-belt adjustment on

and off in the on-board computer

(Y page 253).

Belt warning for the driver and front

passenger

The 7 seat belt warning lamp in the instru-

ment cluster reminds you that all vehicle

occupants must fasten their seat belts. It may

Z

Occupant safety

46

light up continuously or flash. A warning tone An airbag supplements a correctly worn seat

may also sound.

The 7 seat belt warning lamp goes out and

the warning tone stops as soon as the driver's

belt. It is not a replacement for the seat belt.

The airbag offers additional protection in

applicable accident situations.

and the co-driver's seat belts have been fas- Not all airbags are deployed in an accident.

tened.

The different airbag systems work independ-

ently of each other (Y page 55).

i For more information on the 7 seat

belt warning lamp, see "Warning and indi-

cator lamps in the instrument cluster, seat

belt" (Y page 292).

However, no system available today can com-

pletely eliminate injuries and fatalities.

It is also not possible to completely rule out a

risk of injury caused by an airbag due to the

speed at which the airbag must be deployed.

Rear seat belt status indicator

Important safety notes

WARNING

G

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.

The seat belts on the left and centre rear

seats, when viewed in the direction of travel,

are not fastened. (Example)

In order to avoid such risks, always ensure

that all vehicle occupants:

The rear seat belt status indicator is only

available for certain countries.

For approximately 30 seconds, the rear seat

belt status indicator informs you which rear

seat belt is not fastened.

R

fasten their seatbelts correctly, including

pregnant women

are seated correctly and maintain the fur-

thest possible distance from the airbags

R

observe the following notes

The rear seat belt status indicator appears if:

Always ensure that there are no objects loca-

ted between the airbag and the vehicle occu-

pant.

R

you drive off and reach a speed of approx-

imately 10 km/h

R

the rear passengers fasten or unfasten

R

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.

their seat belts while the vehicle is in

motion

R

someone gets in or out of the vehicle and

you pull away again

You can also cancel the rear seat belt status

indicator immediately (Y page 257).

R

Move the driver's and front-passenger

seats as far back as possible. The driver's

seat position must allow the vehicle to be

driven safely.

Airbags

R

Only hold the steering wheel on the out-

side. This allows the airbag to be fully

deployed.

Always lean against the backrest while driv-

ing. Do not lean forwards or lean against

Introduction

The installation location of an airbag is iden-

tified by the AIRBAG symbol.

Occupant safety

47

R

the door or side window. You may other-

wise be in the deployment area of the air-

bags.

Always keep your feet in the footwell in

front of the seat. Do not put your feet on the

dashboard, for example. Your feet may oth-

erwise be in the deployment area of the

airbag.

Always secure persons less than 1.50 m tall

in suitable restraint systems. Up to this

height, the seat belt cannot be worn cor-

rectly.

If a child is travelling in your vehicle, also

observe the following notes:

no accessories, such as cup holders, are

attached to the vehicle within the deploy-

ment 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.

R

WARNING

G

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.

R

Always secure children under twelve years

of age and less than 1.50 m tall 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 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 41).

WARNING

G

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.

R

Always observe the instructions and safety

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.

notes on the automatic front-passenger

front airbag deactivation system

(Y page 49) and on "Children in the vehi-

cle" (Y page 57) in addition to the child

restraint system manufacturer's installa-

tion instructions.

Front airbags

! Do not place heavy objects on the front-

passenger seat. This could cause the sys-

tem 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.

Objects in the vehicle interior may pre-

vent the airbag from functioning cor-

rectly. Before starting your journey and to

avoid risks resulting from the speed of the

airbag as it deploys, make sure that:

R

there are no people, animals or objects

between the vehicle occupants and an air-

bag.

R

there are no objects between the seat, door

and B-pillar.

R

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

hanging on the grab handles or coat hooks.

Z

Occupant safety

48

Driver's kneebag : deploys under the steer-

ing column. The driver's kneebag is triggered

together with the front airbags.

The driver's kneebag offers additional thigh,

knee and lower leg protection for the occu-

pant in the driver's seat.

i The driver's kneebag is only available in

certain countries.

Sidebags

Driver's airbag : deploys in front of the

steering wheel. Front-passenger front air-

bag ; deploys in front of and above the glove

compartment.

When deployed, the front airbags offer addi-

tional head and thorax protection for the

occupants in the front seats.

The PASSENGER AIR BAG OFF and

PASSENGER AIR BAG ON indicator lamps

inform you about the status of the front-

passenger front airbag (Y page 41).

The front-passenger front airbag will only

deploy if:

WARNING

G

Unsuitable seat covers can obstruct or pre-

vent the deployment of the airbags integrated

into the seats. Consequently, the airbags can-

not protect vehicle occupants as they are

designed to do. In addition, the function of the

automatic front-passenger front airbag deac-

tivation system could be restricted. This

poses an increased risk of injury or even fatal

injury.

You should only use seat covers that have

been approved for the corresponding seats by

Mercedes-Benz.

R

the automatic front-passenger front airbag

deactivation system has detected that the

front-passenger seat is occupied

(Y page 49). The PASSENGER AIR BAG

ON indicator lamp is lit (Y page 50)

R

the restraint system control unit predicts a

high accident severity

Driver's kneebag

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 pel-

vis protection for occupants in the front

seats. However, it does not protect the:

R

head

R

neck

R

arms

Occupant safety

49

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

airbag deactivation system: the sidebag on

the front-passenger side deploys under the

following conditions:

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 sys-

tem categorises 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

R

an occupant is detected on the front-

passenger seat or

R

the belt tongue is engaged in the belt

buckle of the front-passenger seat

restraint system is fitted to the front-

If the belt tongue is engaged in the belt

buckle, the sidebag on the front-passenger

side deploys if an appropriate accident situa-

tion occurs. In this case, deployment is inde-

pendent of whether the front-passenger seat

is occupied or not.

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:

R

the sidebag

Windowbags

R

the windowbag

R

the seat belt tensioner

Make sure that your vehicle is equipped with

the automatic front-passenger front airbag

deactivation system (Y page 61). If this is

not the case, always install a child restraint

system on a suitable rear seat (Y page 62).

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 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. Only then

is the correct function of the automatic front-

passenger front airbag deactivation system

guaranteed. Always observe the information

on suitable positioning of the child restraint

system (Y page 62) in addition to the child

Windowbags : are integrated into the side

of the roof frame and deploy in the area from

the A-pillar to the C-pillar.

When deployed, the windowbag enhances the

level of protection for the head. However, it

does not protect the chest 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 they can offer

additional protection to that provided by the

seat belt, a windowbag may be deployed in

other accident situations (Y page 55).

Z

Occupant safety

50

restraint system manufacturer's installation

instructions.

tion to the PASSENGER AIR BAG ON and

PASSENGER AIR BAG OFF indicator lamps. Be

aware of the status of the front-passenger

front airbag both before and during the jour-

ney.

Operation of automatic front-passenger

front airbag deactivation

If a person sits in the passenger seat, they

must be:

R

seated with the seat belt fastened correctly

R

in an almost upright position with their

back against the seat backrest

R

with their feet resting on the floor, if possi-

ble

If the front passenger does not observe these

conditions, the automatic front-passenger

front airbag deactivation system may be influ-

enced, e.g. because the front passenger:

:

PASSENGER AIR BAG ON indicator lamp

PASSENGER AIR BAG OFF indicator lamp

R

transfers their weight by supporting them-

;

selves on a vehicle armrest

The indicator lamps inform you whether the

front-passenger front airbag is disabled or

enabled.

R

sits in such a way that their weight is raised

from the seat cushion

The front-passenger front airbag may be dis-

abled by mistake as a result of these or similar

actions. In this case, the PASSENGER AIR

BAG OFF indicator lamp lights up perma-

nently. The front-passenger front airbag does

not then deploy during an accident.

X

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 simultaneously for approx-

imately six seconds.

The indicator lamps display the status of the

front-passenger front airbag:

WARNING

G

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.

R

PASSENGER AIR BAG ON lights up: the

front-passenger front airbag is enabled. If,

in the event of an accident, all deployment

criteria are met, the front-passenger front

airbag is deployed.

R

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 status of the front-passenger front air-

bag changes while the vehicle is in motion, an

airbag display message appears in the instru-

ment cluster (Y page 270). When the front-

passenger seat is occupied, always pay atten-

When the front-passenger seat is occupied,

always make sure that:

R

the classification of the person in the front-

passenger seat iscorrect and that the front-

passenger front airbag is enabled or disa-

Occupant safety

51

bled in accordance with the person in the

front-passenger seat.

the front-passenger seat has been moved

back as far back as possible.

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

system manufacturer's installation instruc-

tions.

R

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

G

If you secure a child on the co-driver's seat in

a rearward-facing child restraint system and

the PASSENGER AIR BAG ON indicator lamp

lights up, the co-driver's airbag could be

deployed 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 ensure that the co-driver's

airbag is disabled. The PASSENGER AIRBAG

OFF indicator lamp must light up.

If the automatic front-passenger front airbag

deactivation system detects that:

R

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.

R

the front-passenger seat is occupied by a

child in a rearward-facing child restraint

system, the PASSENGER AIR BAG OFF indi-

cator 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, the PASSENGER AIR

BAG ON indicator lamp can light up after

the system self-test and remain lit. This

indicates that the front-passenger front air-

bag is enabled. The result of the classifica-

tion is dependent on, among other factors,

the child restraint system and the child's

build. It is recommended that you fit the

child restraint system to a suitable rear

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. Further information

can be found under "Problems with the auto-

matic front-passenger front airbag deactiva-

tion system" (Y page 54).

WARNING

G

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:

R

come into contact with the vehicle's inte-

R

the front-passenger seat is occupied by a

rior if the PASSENGER AIR BAG OFF indi-

cator lamp is lit, for example

child in a forward-facing child restraint sys-

tem, either the PASSENGER AIR BAG ON or

PASSENGER AIR BAG OFF indicator lamp

lights up and remains lit after the system

self-test depending on the result of the

classification. The result of the classifica-

tion is dependent on, among other factors,

the child restraint system and the child's

build.

R

be struck by the airbag if the PASSENGER

AIR BAG ON indicator lamp is lit

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

Z

Occupant safety

52

Move the front-passenger seat as far back If the front-passenger seat, the seat cover or

as possible. Always observe the informa-

the seat cushion is damaged, have the nec-

tion in "Child restraint systems on the front- essary repair work carried out at a Mercedes-

passenger seat" (Y page 61) and in "Suit-

able positioning of the child restraint sys-

tem" (Y page 62). Alternatively, you can

fit the child restraint system to a suitable

rear seat.

Benz Service Centre.

For safety reasons, Mercedes-Benz recom-

mends that you only use a child restraint sys-

tem which has been tested and approved by

Mercedes-Benz in combination with the auto-

matic front-passenger front airbag deactiva-

R

the front-passenger seat is occupied by a

person with a smaller build (e.g. a teenager tion system.

or small adult), either the PASSENGER AIR

BAG ON or PASSENGER AIR BAG OFF indi-

cator lamp lights up and remains lit after

the system self-test depending on the

result of the classification.

System self-test

DANGER

G

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-

ation. This poses an increased risk of injury or

even fatal injury.

-

if the PASSENGER AIR BAG ON indicator

lamp lights up, move the front-passenger

seat as far back as possible. Alterna-

tively, a person with a small build can sit

on a rear seat.

-

if the PASSENGER AIR BAG OFF indicator

lamp is lit, a person with a smaller build

should not use the front-passenger seat.

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.

R

the front-passenger seat is occupied by an

adult or a person with a build correspond-

ing to that of an adult, the PASSENGER AIR

BAG ON indicator lamp lights up after the

system self-test and remains lit. This indi-

cates that the front-passenger front airbag

is enabled.

WARNING

G

If children are travelling in the vehicle, be sure

to observe the notes on "Children in the vehi-

cle" (Y page 57).

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.

If the automatic front-passenger front airbag

deactivation system is malfunctioning, the

red 6 restraint system warning lamp in

the instrument cluster and the PASSENGER

AIR BAG OFF indicator lamp light up simulta-

neously. The front-passenger front airbag is

disabled in this case and does not deploy dur-

ing an accident. Have the system checked as

soon as possible by qualified technicians.

Consult a Mercedes-Benz Service Centre. The

front-passenger seat should only be repaired

at a Mercedes-Benz Service Centre.

Occupant safety

53

front airbag deactivation system"

(Y page 54).

When the front-passenger seat is occupied,

always ensure that:

R

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.

R

the person is seated properly with a cor-

rectly fastened seat belt.

R

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

G

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 then shows the status of the

co-driver's front airbag (Y page 50).

Further information can be obtained under

"Problems with the automatic co-driver's

Z

Occupant safety

54

Problems with automatic front-passenger front airbag deactivation

Be sure to observe the notes on "System self-test" (Y page 52).

Problem

Possible causes/consequences and M Solutions

The PASSENGER AIR

BAG OFF indicator

lamp lights up and

remains lit, even

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

false.

X

Make sure the conditions for a correct classification of the per-

son on the front-passenger seat are met (Y page 50).

though the front-

X

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

passenger seat is occu-

pied by an adult or a

person with a build cor-

responding to that of an

adult.

front-passenger seat may not be used.

X

Have the automatic front-passenger front airbag deactivation

system checked as soon as possible at a Mercedes-Benz Ser-

vice Centre.

The PASSENGER AIR

BAG OFF indicator

lamp does not light up

and/or does not stay

on.

The front-passenger

seat is:

The automatic front-passenger front airbag deactivation system is

malfunctioning.

X

Make sure there is nothing between the seat and the child

restraint system.

X

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

on the seat cushion of the front-passenger seat.

X

Make sure that the seat cushion length is fully retracted.

R

empty

X

When installing the child restraint system, make sure that the

R

occupied with a rear-

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.

ward-facing child

restraint system

X

Check that the child restraint system is installed correctly.

X

Make sure that no objects are applying additional weight to the

seat.

X

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.

X

Have the automatic front-passenger front airbag deactivation

system checked as soon as possible at a Mercedes-Benz Ser-

vice Centre.

Occupant safety

55

Operation

Deployment of belttensioners and air-

bags

During the first stage of a collision, the

restraint system control unit evaluates impor-

tant physical data relating to vehicle deceler-

ation or acceleration, such as:

Important safety notes

WARNING

G

After the airbag deploys, the airbag parts are

hot. There is a risk of injury.

R

duration

R

direction

Do not touch the airbag parts. Have a

deployed airbag replaced at a qualified spe-

cialist workshop as soon as possible.

R

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.

WARNING

G

Pyrotechnic seat belt tensioners that have

been deployed are no longer operational and

are unable to perform their intended protec-

tive function. This poses an increased risk of

injury or even fatal injury.

Therefore, have pyrotechnic belt tensioners

which have been triggered immediately

replaced at a qualified specialist workshop.

A seat belt tensioner can only be triggered if:

R

the ignition is switched on

R

the components of the restraint system are

operational. You can find further informa-

tion under: "Restraint system warning

lamp" (Y page 41)

R

the belt tongue has engaged in the belt

buckle of the respective front seat

Mercedes-Benz recommends that you have

the vehicle towed to a qualified specialist

workshop after an accident. Take this into

account, particularly if a seat belt tensioner

was triggered or an airbag was deployed.

An electric motor is used by PRE-SAFE^®to

trigger the tightening of the seat belt in haz-

ardous situations. This procedure is reversi-

ble.

If the belt tensioners are triggered or an air-

bag is deployed, you will hear a bang, and a

small amount of powder may also be

released. The 6 restraint system warning

lamp lights up.

Only in rare cases will the bang affect your

hearing. In general, the powder released is

not hazardous to health but may cause short-

term breathing difficulties to persons suffer-

ing from asthma or other pulmonary condi-

tions. Provided it is safe to do so, you should

leave the vehicle immediately or open the

window in order to prevent breathing difficul-

ties.

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 col-

lisions, 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 air-

bag is either disabled or enabled. The front-

passenger front airbag can only be deployed

in an accident if the PASSENGER AIR BAG ON

indicator lamp is lit. Observe the information

on the PASSENGER AIR BAG indicator lamps

(Y page 41).

R

Your vehicle has two-stage front airbags. In

the first deployment stage, the front airbag is

Z

Occupant safety

56

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 milliseconds.

sidebag on the front-passenger side

deploys under the following conditions:

-

an occupant is detected on the front-

passenger seat or

The activation threshold for the seat belt ten-

sioners and airbags is determined based on

the evaluation of the vehicle's rate of decel-

eration or acceleration at various points in the

vehicle. This process is pre-emptive in nature.

The triggering/deployment process should

take place in good time at the start of the

collision.

-

the belt tongue is engaged in the belt

buckle of the front-passenger seat

R

Windowbag on the side on which an impact

occurs, independent of seat belt usage and

regardless of whether the front-passenger

seat is occupied

Seat belt tensioners, if the system deter-

mines that deployment can offer additional

protection for the vehicle occupants in this

situation

The rate of vehicle deceleration or accelera-

tion and the direction of the force are essen-

tially determined by:

i Not all airbags are deployed in an acci-

dent. The different airbag systems work

independently of each other.

How the airbag system works is deter-

mined by the severity of the accident detec-

ted, especially the vehicle deceleration or

acceleration, and the apparent type of acci-

dent:

R

the distribution of forces during the colli-

sion

R

the collision angle

R

the deformation characteristics of the vehi-

cle

R

the characteristics of the object with which

the vehicle has collided

Factors whichcan only be seen and measured

after a collision has occurred do not play a

decisive role in the deployment of an airbag,

nor do they provide an indication of airbag

deployment.

The vehicle may be deformed significantly

without an airbag being deployed. This is the

case if only parts which are relatively easily

deformed are affected and the rate of decel-

eration is not high. Conversely, an airbag may

be deployed even though the vehicle suffers

only minor deformation. This is the case if, for

example, very rigid vehicle parts such as lon-

gitudinal body members are hit, and sufficient

deceleration occurs as a result.

R

frontal collision

side impact

R

PRE-SAFE^®(anticipatory occupant

protection)

Introduction

In certain hazardous situations, PRE-SAFE^®

takes pre-emptive measures to protect the

vehicle 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.

If the restraint system control unit detects a

side impact, the applicable components of

the restraint system are activated independ-

ently of each other.

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

R

Sidebags on the side on which an impact

occurs, independent from the seat belt ten-

sioner and seat belt usage

Vehicles with the automatic front-

passenger airbag deactivation system: the

Children in the vehicle

57

safe distance from the vehicle in front. Drive

carefully.

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:

Function

PRE-SAFE^®intervenes:

R

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 sup-

ply is cut off

vehicles with the Mercedes-Benz emer-

gency call system: automatic emergency

call

in emergency braking situations, e.g. when

BAS is activated

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

ical limits are exceeded and the vehicle

understeers or oversteers severely

R

on vehicles with DISTRONIC PLUS: if adap-

tive Brake Assist intervenes powerfully

R

PRE-SAFE^®takes the following measures

depending on the hazardous situation detec-

ted:

R

the front seat belts are pre-tensioned.

Children in the vehicle

Important safety notes

R

if the vehicle skids, the side windows and

the panorama sliding sunroof are closed.

vehicles with the memory function: the

R

Accident statistics show that children

secured in the rear seats are safer than chil-

dren 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 are generally better pro-

tected there.

front-passenger seat is adjusted if it is in an

unfavourable position.

If the hazardous situation passes without

resulting 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:

If a child younger than twelve years old and

under 1.50 m in height is travelling in the

vehicle:

X

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.

R

always secure the child in a child restraint

system suitable for Mercedes-Benz vehi-

cles. The child restraint system must be

appropriate to the age, weight and size of

the child.

The seat-belt adjustment is an integral part of

the PRE-SAFE^®convenience function. Infor-

mation about the convenience function can

be found under "Belt adjustment"

(Y page 45).

R

be sure to observe the instructions and

safety notes in this section in addition to

the child restraint system manufacturer's

installation instructions.

R

always pay attention to the instructions

and safety notes on the automatic front-

passenger front airbag deactivation system

(Y page 49).

Z

Children in the vehicle

58

WARNING

Child restraint system

G

If you leave children unattended in the vehi-

cle, they may be able to set the vehicle in

motion if, for example, they:

If you fit a rearward-facing child restraint sys-

tem to the centre rear seat, the rear arm rest

must be folded back as far as possible.

R

release the parking brake

Observe the instructions for correct use of

the child restraint system (Y page 62).

R

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.

For safety reasons, Mercedes-Benz recom-

mends that you only use a child restraint sys-

tem recommended by Mercedes-Benz

(Y page 66).

R

WARNING

G

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

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

G

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

G

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.

WARNING

G

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.

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.

Always ensure that all vehicle occupants have

their seat belts fastened correctly and are sit-

ting properly. Particular attention must be

paid to children.

Observe the safety notes on the seat belt

(Y page 42) and the information on the cor-

rect use of the seat belt (Y page 44).

You will find further information on stowing

objects, luggage and loads securely under

"Loading guidelines" (Y page 306).

Children in the vehicle

59

WARNING

If the child weighs more than 22 kg, only use

ISOFIX 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.

G

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.

When fitting a child restraint system, be sure

to observe the manufacturer's installation

and operating instructions and the instruc-

tions for correct use of the child restraint sys-

tem (Y page 62).

Before every trip, make sure that the ISOFIX

child restraint system is engaged correctly in

both ISOFIX securing rings.

! 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.

The securing systems of child restraint sys-

tems are:

R

the seat belt system

R

the ISOFIX securing rings

R

the Top Tether anchorages

If it is absolutely necessary to fit a child

restraint system to the front-passenger seat,

always observe the information on "Child

restraint systems on the front-passenger

seat" (Y page 61).

Observe the warning labels in the vehicle inte-

rior and on the child restraint system.

:

ISOFIX securing rings

i It is advisable to use Mercedes-Benz care

products to clean child restraint systems

recommended by Mercedes-Benz. You can

obtain information about this at any

Mercedes-Benz Service Centre.

X

Install the ISOFIX child restraint system on

both ISOFIX securing rings :.

ISOFIX is a standardised securing system for

specially designed child restraint systems on

the rear seats. ISOFIX securing rings : for

two ISOFIX child restraint systems are fitted

on the left and right of the rear seats.

ISOFIX child seat securing system

WARNING

G

Non-ISOFIX child seats may also be used and

can be installed using the vehicle's seat belt

system. When fitting a child restraint system,

be sure to observe the manufacturer's instal-

lation and operating instructions and the

instructions for correct use of the child

restraint system (Y page 62).

ISOFIX child restraint systems do not offer

sufficient protective effect 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.

Z

Children in the vehicle

60

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 system is fitted with a Top Tether

belt, this should always be used.

Important safety notes

Vehicles with adjustable head restraints:

WARNING

G

X

Move the head restraint upwards.

If the rear seat backrests are not locked, they

could fold forwards in the event of an acci-

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.

X

Route Top Tether belt = under the head

restraint between the two head restraint

bars.

Vehicles without adjustable head

restraints:

X

Top Tether belt with onebelt strap: route

Top Tether belt = centrally over the head

restraint.

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.

or

^XTop Tether belt with two belt straps:

route one Top Tether belt = to the left and

one to the right past the side of the head

restraint.

If the rear backrest is not engaged and

locked, the red lock verification indicator will

be visible (Y page 309).

All vehicles:

X

Fit the ISOFIX child restraint system with

Top Tether. Always comply with the child

restraint system manufacturer's installa-

tion instructions when doing so.

Top Tether anchorages

X

Hook Top Tether hook ; of Top Tether belt

= into Top Tether anchorage :.

Ensure that:

R

Top Tether hook ; is hooked into Top

Tether anchorage : as shown

R

Top Tether belt = is not twisted

R

Top Tether belt = 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 =. Always comply

with the child restraint system manufactur-

er's installation instructions when doing so.

The Top Tether anchorage points are located

on the rear side of the backrests on both

outer rear seats.

X

Children in the vehicle

61

Vehicles with adjustable head restraints:

Please observe the warning notice on the

front-passenger sun visor, see the illustra-

tion.

X

If necessary, move the head restraint back

down again slightly (Y page 110). Make

sure that you do not interfere with the cor-

rect routing of Top Tether belt =.

WARNING

G

If you secure a child on the co-driver's seat in

a rearward-facing child restraint system and

the PASSENGER AIR BAG ON indicator lamp

lights up, the co-driver's airbag could be

deployed in the event of an accident. The child

could be struck by the airbag. There is an

increased risk of injury, possibly even fatal.

Child restraint system on the front-

passenger seat

General notes

Accident statistics show that children

secured in the rear seats are safer than chil-

dren secured in the front-passenger seat. For

this reason, Mercedes-Benz strongly advises

that you install a child restraint system on a

rear seat.

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 49).

In this case, always ensure that the co-driver's

airbag is disabled. The PASSENGER AIRBAG

OFF indicator lamp must light up.

NEVER use a rearward facing child restraint

on a seat protected by an ACTIVE AIRBAG in

front of it; DEATH or SERIOUS INJURY to the

CHILD can occur.

If the PASSENGER AIR BAG ON indicator lamp

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

bled (Y page 41).

Vehicles without the automatic front-

passenger front airbag deactivation

system

You can thus avoid the risks that could arise

as a result of:

R

a child restraint system that is not detected

by the automatic front-passenger front air-

bag deactivation system

R

the unintentional disabling of the front-

passenger front airbag

R

the unsuitable positioning of the child

restraint system, e.g. too close to the dash-

board

If the front-passenger seat of your vehicle is

not equipped with the automatic front-

passenger front airbag deactivation system,

this is indicated 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.

Z

Children in the vehicle

62

If you turn the key to position 2 in the ignition accordingly. Always make sure that the shoul-

der 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 down-

wards from the vehicle belt outlet. If neces-

sary, 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 62) in addition to the child restraint

system manufacturer's installation and oper-

ating instructions.

lock, the PASSENGER AIR BAG OFF and

PASSENGER AIR BAG ON indicator lamps

light up briefly. However, they have no func-

tion and do not indicate that there is an auto-

matic front-passenger front airbag deactiva-

tion system.

Always fit the rearward-facing restraint sys-

tem to a suitable rear seat in this case

(Y page 62).

Observe the following information under

"Rearward-facing child restraint system" and

"Forward-facing child restraint system" as

well as information on the suitable position-

ing of the child restraint system

Suitable positioning of the child

restraint system

(Y page 62).

Rearward-facing child restraint system

Introduction

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 41)is the

front-passenger front airbag disabled.

Always observe the information on suitable

positioning of the child restraint system

(Y page 62) in addition to the child restraint

system manufacturer's installation and oper-

ating instructions.

Only child restraint systems which are

approved in accordance with the ECE stand-

ard ECE R44 are permitted for use in the vehi-

cle.

For certain child restraint systems in weight

category III, this can mean that the area of use

is restricted. The maximum size setting of the

child restraint system is not 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".

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 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

Example: approval label on the child restraint sys-

tem

"Universal" category child restraint systems

can be used on the seats indicated with U, UF

or IUF according to the tables "Suitability of

Children in the vehicle

63

the seats for attaching a belted child restraint

system" or "Suitability of the seats for attach-

ing an ISOFIX child restraint system".

Semi-universal child restraint systems are

indicated by the text "semi-universal" on the

approval label. These can be used if the vehi-

cle and the seat are listed in the child restraint

system manufacturer's vehicle model list. For

more information, contact the child restraint

system manufacturer or visit their website.

tem manufacturer's installation instruc-

tions.

If possible, move the seat cushion angle to

the highest, most vertical position

(Y page 108).

X

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:

X

Always pay attention to the instructions

under "Child restraint system on the front-

passenger seat" (Y page 61).

There you will find instructions on how to

correctly route the shoulder belt strap from

the vehicle belt outlet to the shoulder belt

guide on the child restraint system

(Y page 62).

X

Move the front-passenger seat as far back

as possible and fully retract the seat cush-

ion 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 posi-

tion.

X

Move the backrest to an almost vertical

position.

The entire base of the child restraint sys-

tem 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 back-

rest and the head restraint position accord-

ingly. Also observe the child restraint sys-

Z

Children in the vehicle

64

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 of the respective seat (Y page 110), if possible. The backrest of the child restraint

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

Always observe the notes in the "Child restraint system" section (Y page 58) and the child

restraint system manufacturer's installation instructions.

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

immediately (Y page 109). All vehicle occupants must adjust their head restraints correctly

before beginning the journey.

Legend for the table:

X

Seat which is unsuitable for children in this weight category.

U

Suitable 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.

L

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

restraint systems" table (Y page 66). 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.

Weight category

Front-passenger seat

Rear seat

Left, right

Centre²

Front-

passenger

Front-

passenger

front airbag front airbag

enabled

deactiva-

ted¹

0

up to 10 kg

X

U, L

X

0+

I

up to 13 kg

X

9 kg to 18 kg

15 kg to 25 kg

22 kg to 36 kg

UF, L

U, L

II

III

X

1

2

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

65

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 of the respective seat (Y page 110), if possible. The backrest of the child restraint

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

Always observe the notes in the "Child restraint system" section (Y page 58) and the child

restraint system manufacturer's installation instructions.

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

immediately (Y page 109). All vehicle occupants must adjust their head restraints correctly

before beginning the journey.

Legend for the table:

X

ISOFIX position that is not suitable for ISOFIX child restraint systems in this weight cat-

egory and/or size category.

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

versal" category which 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 66).

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.

Weight category

Size category Equipment Rear seat left,

right

Carry-cot

F

G

E

ISO/L1

ISO/L2

ISO/R1

X

0

up to 10 kg

IL

up to approximately 6 months

0+

up to 13 kg

up to approximately 15 months

E

D

C

D

C

B

ISO/R1

ISO/R2

ISO/R3

ISO/R2

ISO/R3

ISO/F2

IL

IL³

IL

I

9 kg to 18 kg

between approximately

9 months and 4 years

IL³

IUF

3

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.

Z

Children in the vehicle

66

Weight category

Size category Equipment Rear seat left,

right

B1

A

ISO/F2X

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 man-

ufacturer's installation instructions.

Vehicles with the Style or Urban package or 4-way or 6-way front seats: set the front seat to

the highest position.

Vehicles with 2-way front seats: set the front seat to the foremost position.

Recommended child restraint systems

General notes

Always observe the information in "Child restraint systems on the front-passenger seat"

(Y page 61) and in "Suitable positioning of the child restraint system" (Y page 62).

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 ...)⁴

Category 0: up to

10 kg

up to approx-

Britax Römer BABY SAFE

plus II

04 301146

970 20 00

970 36 00

imately 6 months

Category 0+: up to

13 kg

Britax Römer BABY SAFE

plus II

970 20 00

970 36 00

up to approx-

imately

15 months

4

Colour code 9H95.

Children in the vehicle

67

Weight category

Manufac-

turer

Type

Approval num-

ber (E1 ...)

Order number

(A 000 ...)⁴

Group I: 9 kg to

18 kg

between approx-

imately 9 months

and 4 years

Britax Römer DUO plus

03 301133

04 301133

970 16 00

970 19 00

KIDFIX⁵

Group II/III: 15 kg

to 36 kg

Britax Römer

04 301198

between approx-

imately 4and

12 years

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

tems

Order number⁴

Weight cat- Size

Manufac-

turer

Type

Approval

number

(E1 ...)

egory

cate-

gory

Category

0+:

up to 13 kg

E

Britax Römer BABY SAFE

plus

03 301146

04 301146

B6 6 86 8224

Category I:

9 kg to

18 kg

B1

Britax Römer DUO plus

03 301133

04 301133

A 000 970 16 00

Child-proof locks

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.

Important safety notes

WARNING

G

If children are travelling in the vehicle, they

could:

R

open doors, thus endangering other people

or road users

exit the vehicle and be caught by oncoming

traffic

Override feature for:

R

the rear doors (Y page 68)

R

the rear side windows (Y page 68)

R

operate vehicle equipment and become

trapped, for example

4

5

Colour code 9H95.

Before fitting the KIDFIX child restraint system in the vehicle, always observe the child restraint system

manufacturer's installation instructions. These will also include notes on fixing options.

Z

Children in the vehicle

68

Child-proof locks for the rear doors

WARNING

G

If you leave children unattended in the vehi-

cle, they may be able to set the vehicle in

motion if, for example, they:

R

release the parking brake

R

shift the automatic transmission out of park

position P or shift manual transmission into

neutral

R

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.

You 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

vehicle is unlocked, the door can be opened

from the outside.

WARNING

G

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.

X

To activate: press the child-proof lock

lever up in the direction of arrow :.

Make sure that the child-proof locks are

working properly.

X

To deactivate: press the child-proof lock

lever down in the direction of arrow ;.

WARNING

G

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.

Override feature for the rear side win-

dows

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.

X

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 driv-

er's door. If indicator lamp ; is off, oper-

ation is possible using the switches in the

rear compartment.

Driving safety systems

69

neither 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 stay-

ing in lane. Always adapt your driving style to

suit the prevailing road and weather condi-

tions and maintain a safe distance from the

vehicle in front. Drive carefully.

Pets in the vehicle

WARNING

G

If you leave animals unsupervised or unse-

cured in the vehicle, they may push a button

or a switch, for example.

They could:

R

activate vehicle equipment and become

trapped, for example

The driving safety systems described only

work as effectively as possible when there is

adequate 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 358).

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

effectively as possible.

R

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

ABS (Anti-lock Braking System)

General notes

Driving safety systems overview

In this section, you will find information about

the following driving safety systems:

ABS regulates brake pressure in such a way

that the wheels do not lock when you brake.

This allows you to continue steering the vehi-

cle 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.

R

ABS (Anti-lock Braking System)

(Y page 69)

R

BAS (Brake Assist System) (Y page 70)

R

COLLISION PREVENTION ASSIST PLUS

(Y page 70)

R

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.

Adaptive brake lights (Y page 73)

®

R

ESP (Electronic Stability Program)

(Y page 73)

EBD (electronic brake force distribution)

R

(Y page 77)

ADAPTIVE BRAKE (Y page 77)

Important safety notes

R

i Observe the "Important safety notes" sec-

tion (Y page 69).

R

STEER CONTROL (Y page 77)

WARNING

G

Important safety notes

If ABS is faulty, the wheels could lock when

braking. The steerability and braking charac-

teristics may be severely impaired. Addition-

If you fail to adapt your driving style or if you

are inattentive, the driving safety systems can

Z

Driving safety systems

70

Braking

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.

X

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.

If ABS is malfunctioning, other systems,

including driving safety systems, will also

become inoperative. Observe the information

on the ABS warning lamp (Y page 295) and

display messages which may be shown in the

instrument cluster (Y page 258).

COLLISION PREVENTION ASSIST

PLUS

General notes

i Observe the "Important safety notes" sec-

tion (Y page 69).

Brakes

X

If ABS intervenes: continue to depress the

COLLISION PREVENTION ASSIST PLUS con-

sists of a distance warning function with an

autonomous braking function and Adaptive

Brake Assist.

COLLISION PREVENTION ASSIST PLUS can

help you to minimise the risk of a collision

with the vehicle in front or reduce the effects

of such a collision.

If COLLISION PREVENTION ASSIST PLUS

detects that there is a risk of a 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, the COLLISION

PREVENTION ASSIST PLUS Adaptive Brake

Assist assists you.

brake pedal with force until the braking sit-

uation is over.

^XTo 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 indica-

tion 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 situa-

tions. If you depress the brake pedal quickly,

BAS automatically boosts the braking force,

thus shortening the stopping distance.

Important safety notes

Detection of hazardous situations can be par-

ticularly impaired by:

Important safety notes

i Observe the "Important safety notes" sec-

tion (Y page 69).

R

dirt on the sensors or obscured sensors

R

snow or heavy rain

WARNING

G

R

interference by other radar sources

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.

R

strong radar reflections, for example, in

multi-storey car parks

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

motorcycle

R

Driving safety systems

71

R

Important safety notes

a vehicle travelling in front on a different

line

new vehicles or after a service on the COL-

LISION PREVENTION ASSIST PLUS system

Observe the important safety notes in the

"Running-in notes" section (Y page 156).

i Observe the "Important safety notes" sec-

tion for driving safety systems (Y page 69).

WARNING

G

The distance warning function does not react:

R

to people or animals

Following damage to the front end of the vehi-

cle, have the configuration and operation of

the radar sensor checked at a qualified spe-

cialist workshop. This also applies to colli-

sions at slow speeds where there is no visible

damage to the front of the vehicle.

R

to oncoming vehicles

R

to crossing traffic

R

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.

Activating/deactivating

The COLLISION PREVENTION ASSIST PLUS is

automatically active after switching on the

ignition.

WARNING

G

You can activate or deactivate COLLISION

PREVENTION ASSIST PLUS in the on-board

computer (Y page 249). When deactivated,

the distance warning function and the auton-

omous braking function are also deactivated.

The distance warning function cannot always

clearly identify objects and complex traffic

situations.

In such cases, the distance warning function

may:

Vehicles with black and white multifunc-

tion display: when COLLISION PREVENTION

ASSIST PLUS is activated, the multifunction

display in the status overview shows the Ä

symbol.

Vehicles with colour multifunction dis-

play: when COLLISION PREVENTION ASSIST

PLUS is deactivated, the multifunction dis-

play in the assistance graphic shows the æ

symbol.

R

give an unnecessary warning

not give a warning

R

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 warn-

ing at speeds:

R

Distance warning function

General notes

of approximately 30 km/h or more, if, over

several seconds, the distance maintained

to the vehicle travelling in front is insuffi-

cient. The · distance warning lamp

then lights up in the instrument cluster.

The distance warning function can help you to

minimise the risk of a collision with the vehi-

cle in front or reduce the effects of such a

collision. If the distance warning function

detects that there is a risk of a collision, you

will be warned visually and acoustically.

R

of approximately 7 km/h or more, if you

rapidly approach a vehicle in front. An inter-

mittent warning tone will then sound, and

the · distance warning lamp will light

up in the instrument cluster.

Z

Driving safety systems

72

X

Brake immediately in order to increase the that are in the path of your vehicle for an

distance from the vehicle in front.

extended period of time.

or

X

If Adaptive Brake Assist detects a risk of col-

lision with the vehicle in front, it calculates

the braking force necessary to avoid a colli-

sion. If you apply the brakes forcefully, Adap-

tive Brake Assist will automatically increase

the braking force to a level suitable for the

traffic conditions.

Adaptive Brake Assist provides braking assis-

tance in hazardous situations at speeds

above 7 km/h. It uses radar sensor technol-

ogy to assess the traffic situation.

Up to a speed of approximately 250 km/h,

Adaptive Brake Assist is capable of reacting

to moving objects that have already been

detected as such at least once over the period

of observation.

Take evasive action provided it is safe to do

so.

Due to the nature of the system, particularly

complicated but non-critical driving condi-

tions may also cause the system to display a

warning.

With the help of the radar sensor system, the

distance warning function can detect obsta-

cles that are in the path of your vehicle for an

extended period of time.

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

distance warning function can also react to

stationary obstacles, such as stopped or

parked vehicles.

Up to a speed of approximately 70 km/h,

Adaptive Brake Assist reacts to stationary

obstacles.

If Adaptive Brake Assist demands particularly

high braking force, preventative passenger

protection measures (PRE-SAFE^®) are activa-

ted simultaneously (Y page 56).

Autonomous braking function

If the driver does not react to the distance

warning signal in a critical situation, COLLI-

SION PREVENTION ASSIST PLUS can assist

with the autonomous braking function.

The autonomous braking function:

R

X

gives the driver more time to react to criti-

cal driving situations

can help the driver to avoid an accident or

Keep the brake pedal depressed until the

emergency braking situation is over.

ABS prevents the wheels from locking.

R

reduces the effects of an accident

The brakes will work normally again if:

Due to the nature of the system, complicated

but non-critical driving conditions may also

cause the Autonomous Braking function to

intervene.

If the autonomous braking function demands

particularly high braking force, preventative

passenger protection measures (PRE-SAFE^®)

are activated simultaneously (Y page 56).

R

you release the brake pedal

there is no longer any danger of a collision

no obstacle is detected in front of your

vehicle

R

Adaptive Brake Assist is then deactivated.

Important safety notes

i Observe the "Important safety notes" sec-

tion for driving safety systems (Y page 69).

Adaptive Brake Assist

General notes

WARNING

G

Adaptive Brake Assist cannot always clearly

identify objects and complex traffic situa-

tions.

i Observe the "Important safety notes" sec-

tion (Y page 69).

With the help of Adaptive Brake Assist, the

distance warning signal can detect obstacles

Driving safety systems

73

light up continuously. 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 123).

In such cases, Adaptive Brake Assist can:

R

intervene unnecessarily

R

not intervene

There is a risk of an accident.

Always pay careful attention to the traffic sit-

uation and be ready to brake. Terminate the

intervention in a non-critical driving situation.

ESP^®(Electronic Stability Program)

General notes

WARNING

G

Adaptive Brake Assist does not react:

i Observe the "Important safety notes" sec-

tion (Y page 69).

R

to people or animals

R

ESP^®monitors driving stability and traction,

i.e. power transmission between the tyres

and the road surface.

to oncoming vehicles

to crossing traffic

when cornering

R

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 vehicle 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.

As a result, the Adaptive Brake Assist may not

intervene in all critical conditions. There is a

risk of an accident.

Always pay careful attention to the traffic sit-

uation and be ready to brake.

Due to the nature of the system, particularly

complicated but non-critical driving condi-

tions may also cause Brake Assist to inter-

vene.

ETS/4ETS (Electronic Traction System)

If Adaptive Brake Assist is not available due to

a malfunction in the radar sensor system, the

brake system remains available with full

brake boosting effect and BAS.

i Observe the "Important safety notes" sec-

tion (Y page 69).

ETS traction control is part of ESP^®. On vehi-

cles with 4MATIC, 4ETS is a component of

ESP^®.

Adaptive brake lights

Traction control brakes the drive wheels indi-

vidually if they spin. This enables you to pull

away and accelerate on slippery surfaces, for

example if the road surface is slippery on one

side. In addition, more drive torque is trans-

ferred to the wheel or wheels with traction.

The adaptive brake lights warn following traf-

fic in an emergency braking situation:

R

by flashing brake lamps

R

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 warn-

ing lamps are activated automatically. If the

brakes are applied again, the brake lamps

Traction control remains active if you deacti-

vate ESP^®.

Important safety notes

i Observe the "Important safety notes" sec-

tion (Y page 69).

Z

Driving safety systems

74

starts automatically. ESP^®remains in its pre-

viously selected status. Example: if ESP^®

was deactivated before the engine was

switched off, ESP^®remains deactivated when

the engine is switched on again.

WARNING

G

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.

Deactivating/activating ESP^®(except

Mercedes‑AMG vehicles)

Vehicles without 4MATIC: when towing

away your vehicle with the front axle raised,

please observe the notes on ESP^®

(Y page 352).

Important safety notes

You can select between the following sta-

tuses of ESP^®:

If the å ESP^®OFF warning lamp lights up

®

R

ESP is activated

continuously, ESP^®is deactivated.

®

R

ESP is deactivated

If the ÷ ESP^®warning lamp and the å

warning lamp are lit continuously, ESP^®is not

available due to a malfunction.

Observe the information on warning lamps

(Y page 297) and display messages which

may be shown in the instrument cluster

(Y page 258).

WARNING

G

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.

Only use wheels with the recommended tyre

sizes. Only then will ESP^®function properly.

It may be best to deactivate ESP^®in the fol-

lowing situations:

R

when using snow chains

in deep snow

on sand or gravel

Characteristics of ESP^®

General notes

R

If the ÷ ESP warning lamp goes out before

beginning the journey, ESP^®is automatically

active.

If ESP^®intervenes, the ÷ ESP^®warning

lamp flashes in the instrument cluster.

If ESP^®intervenes:

i Activate ESP^®as soon as the situations

described above no longer apply. ESP^®will

otherwise not be able to stabilise the vehi-

cle if the vehicle starts to skid or a wheel

starts to spin.

Deactivating/activating ESP^®

You can deactivate or activate ESP^®via the

on-board computer (Y page 248).

ESP^®deactivated:

The å ESP^®OFF warning lamp in the

instrument cluster lights up.

ESP^®activated:

®

X

Do not deactivate ESP under any circum-

stances.

When pulling away, only depress the accel-

erator pedal as far as is necessary.

Adapt your driving style to suit the prevail-

ing road and weather conditions.

ECO start/stop function

The å ESP^®OFF warning lamp in the

instrument cluster goes out.

The ECO start/stop function switches the

engine off automatically if the vehicle stops

moving. When pulling away again, the engine

Driving safety systems

75

Characteristics when ESP^®is deactivated

Only activate SPORT handling mode in the sit-

uations described in the following.

If ESP^®is deactivated and one or more wheels

start to spin, the ÷ ESP^®warning lamp in

the instrument cluster flashes. In such situa-

tions, ESP^®will not stabilise the vehicle.

WARNING

G

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.

If you deactivate ESP^®:

®

R

ESP no longer improves driving stability

R

Engine torque is no longer limited and the

drive wheels are able to spin

In the following situations, it may be better to

activate SPORT handling mode or deactivate

ESP^®:

The spinning of the wheels results in a cut-

ting action for better traction on loose sur-

faces.

R

Traction control is still activated

R

when using snow chains

in deep snow

on sand or gravel

on specially designated roads when the

vehicle's own oversteering and understeer-

ing characteristics are desired

COLLISION PREVENTION ASSIST is no lon-

ger available; nor is it activated if you brake

firmly with assistance from ESP^®

R

®

R

PRE-SAFE is no longer available; it is also

not activated if you brake firmly with assis-

tance from ESP^®

Driving in SPORT handling mode or without

ESP^®requires an extremely qualified and

experienced driver.

®

ESP still provides support when you brake

firmly

i Activate ESP^®as soon as the situations

described above no longer apply. ESP^®will

otherwise not be able to stabilise the vehi-

cle if the vehicle starts to skid or a wheel

starts to spin.

Deactivating/activating ESP^®

(Mercedes‑AMG vehicles)

Important safety notes

i Observe the "Important safety notes" sec-

tion (Y page 69).

Deactivating/activating ESP^®

You can select between the following sta-

tuses of ESP^®:

®

R

ESP is activated

SPORT handling mode is activated

®

ESP is deactivated

ESP^®is activated every time the engine is

switched on, regardless of whether ESP^®was

deactivated before the engine was switched

off.

WARNING

G

^XTo activate SPORT handling mode:

briefly press button :.

The M handling mode warning lamp in

the instrument cluster lights up. The

When SPORT handling mode is activated,

there is a greater risk of skidding and acci-

dents.

Z

Driving safety systems

76

If you deactivate ESP^®:

SPORT hanndlingg mmode message appears

in the multifunction display.

^XTo deactivate SPORT handling mode:

briefly press button :.

The M handling mode warning lamp in

the instrument cluster goes out.

®

R

ESP no longer improves driving stability

R

Engine torque is no longer limited and the

drive wheels are able to spin

The spinning of the wheels results in a cut-

ting action for better traction on loose sur-

faces.

®

X

To deactivate ESP : press button : until

the å ESP^®OFF warning lamp lights up

in the instrument cluster.

R

Traction control is still activated

COLLISION PREVENTION ASSIST is no lon-

ger available; nor is it activated if you brake

firmly with assistance from ESP^®

The ÷ OFF message appears in the mul-

tifunction display.

®

X

To activate ESP : briefly press button :.

®

R

PRE-SAFE is no longer available; it is also

The å ESP^®OFF warning lamp in the

instrument cluster goes out. The ÷

ESP^®ON message appears in the multifunc-

tion display.

not activated if you brake firmly with assis-

tance from ESP^®

®

ESP still provides support when you brake

firmly

Characteristics of activated SPORT han-

dling mode

ESP^®trailer stabilisation

General notes

If SPORT handling mode is activated and one

or more wheels start to spin, the ÷ ESP^®

warning lamp in the instrument cluster

flashes. ESP^®only stabilises the vehicle to a

limited degree.

If your vehicle/trailer combination begins to

lurch, ESP^®assists you in this situation. ESP^®

slows the vehicle down by braking and limit-

ing the engine output until the vehicle/trailer

combination has stabilised.

When SPORT handling mode is activated:

®

R

ESP only improves driving stability to a

Important safety notes

limited degree

WARNING

R

G

Traction control is still activated

Engine torque is no longer limited and the

drive wheels are able to spin

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.

The spinning of the wheels results in a cut-

ting action for better traction on loose sur-

faces.

®

R

ESP still provides support when you brake

Always adapt your driving style to the prevail-

ing road and weather conditions.

firmly

Characteristics when ESP^®is deactivated

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.

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

situations, ESP^®will not stabilise the vehicle.

Protection against theft

77

ESP^®trailer stabilisation does not work if

ESP^®is deactivated or disabled because of a

malfunction.

This steering support is provided in particular

if:

R

both right wheels or both left wheels are on

a wet or slippery road surface when you

brake

the vehicle starts to skid

EBD (electronic brake force distribu-

tion)

R

Important safety notes

General notes

i Observe the "Important safety notes" sec-

tion (Y page 69).

EBD monitors and controls the brake pres-

sure on the rear wheels to improve driving

stability while braking.

No steering support is provided from STEER

CONTROL, if:

Important safety notes

®

R

ESP is malfunctioning

i Observe the "Important safety notes" sec-

tion (Y page 69).

R

the steering is faulty

If ESP^®is malfunctioning, you will be assisted

further by the electrical power steering.

WARNING

G

If EBD is malfunctioning, the rear wheels can

lock, e.g. under full braking. This increasesthe

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.

Protection against theft

Immobiliser

The immobiliser prevents your vehicle from

being started without the correct key.

X

To activate with the key: remove the key

Observe information regarding indicator and

warning lamps (Y page 295) as well as dis-

play messages (Y page 260).

from the ignition lock.

^XTo activate with KEYLESS-GO start func-

tion or KEYLESS-GO: switch the ignition

off and open the driver's door.

X

To deactivate: switch on the ignition.

ADAPTIVE BRAKE

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.

ADAPTIVE BRAKE enhances braking safety

and offers increased braking comfort. In addi-

tion to the braking function, ADAPTIVE BRAKE

also has the HOLD function (Y page 204) and

hill start assist (Y page 161).

i The immobiliser is always deactivated

when you start the engine.

STEER CONTROL

General notes

STEER CONTROL helps you by transmitting a

noticeable steering force to the steering

wheel in the direction required for vehicle

stabilisation.

Z

Protection against theft

78

^XTo deactivate the alarm using KEYLESS-

GO: grasp the outside door handle. The key

must be outside the vehicle.

ATA (Anti-Theft Alarm system)

The alarm is deactivated.

or

X

Press the Start/Stop button on the dash-

board. The key must be inside the vehicle.

The alarm is deactivated.

The alarm is not switched off, even if you

close the open door that has triggered it, for

example.

i If the alarm stays on for more than

30 seconds, the Mercedes‑Benz emer-

gency call system automatically sends a

message to the Customer Assistance

Centre. This is done by means of a text

message or a data connection.

The emergency call system sends a mes-

sage or establishes a data connection pro-

vided that:

X

To prime: lock the vehicle with the key or

KEYLESS-GO.

Indicator lamp : flashes. The alarm sys-

tem is primed after approximately

15 seconds.

To deactivate: unlock the vehicle with the

key or KEYLESS-GO.

X

or

X

Insert the key into the ignition lock.

R

you have subscribed to the

A visual and audible alarm is triggered if the

alarm system is primed and you open:

Mercedes‑Benz emergency call system

R

the Mercedes‑Benz emergency call sys-

R

tem has been activated properly

a door

R

the necessary mobile phone network is

available

the vehicle with the emergency key ele-

ment

R

the tailgate

the bonnet

Tow-away protection

^XTo switch the alarm off with the key:

press the % or & button on the key. Function

The alarm is deactivated.

An audible and visual alarm is triggered if your

or

vehicle's angle of inclination is altered while

tow-awayprotectionisprimed. Thiscanoccur

if the vehicle is jacked up on one side, for

example.

^XVehicles with KEYLESS-GO start-func-

tion or KEYLESS-GO: remove the Start/

Stop button from the ignition lock

(Y page 157).

X

Insert the key into the ignition lock.

Activating

The alarm is deactivated.

X

Make sure that:

Protection against theft

79

R

the doors are closed

the tailgate is closed

To prevent a false alarm, deactivate tow-away

protection if you lock your vehicle and it:

Only then is tow-away protection primed.

R

is being transported

X

Lock the vehicle with the key or KEYLESS-

GO.

Tow-away protection is primed after

approximately 60 seconds.

R

is being loaded onto a ferry or car trans-

porter, for example

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

split-level garage

R

Switching off

Interior motion sensor

Function

X

Unlock the vehicle with the key or KEY-

LESS-GO.

or

X

When the interior motion sensor is primed, 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

interior, for example.

Insert the key into the ignition lock.

Tow-away protection is switched off auto-

matically.

Deactivating

Activating

X

Make sure that:

R

the side windows are closed

R

the panorama sliding sunroof is closed

R

there are no objects, e.g. mascots, hang-

ing on the rear-view mirror or on the grab

handles on the roof trim

This will prevent false alarms.

X

Make sure that:

R

the doors are closed

X

Remove the key from the ignition lock.

R

the panorama sliding sunroof is closed

the tailgate is closed

or

R

^XVehicles with KEYLESS-GO start func-

tion or KEYLESS-GO: switch off the engine

using the Start/Stop button and open the

driver's door.

Only then is the interior motion sensor

primed.

Lock the vehicle with the key or KEYLESS-

X

GO.

X

Press button :.

The interior motion sensor is primed after

approximately 30 seconds.

Indicator lamp ; lights up briefly.

X

Lock the vehicle with the key or KEYLESS-

GO.

Switching off

Tow-away protection is deactivated.

X

Unlock the vehicle with the key or KEY-

Tow-away protection remains deactivated

until:

LESS-GO.

or

R

the vehicle is unlocked again

a door is opened and closed again and

X

Insert the key into the ignition lock.

R

the vehicle is locked again

Z

Protection against theft

80

or

X

opened from the inside if the vehicle has

been locked with the key (Y page 89).

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 89).

Press the Start/Stop button.

The key must be in the vehicle.

The interior motion sensor is automatically

switched off.

Deactivating

X

Remove the key from the ignition lock.

or

^XVehicles with KEYLESS-GO start func-

tion or KEYLESS-GO: switch off the engine

using the Start/Stop button and open the

driver's door.

X

Press button :.

Indicator lamp ; flashes several times in

rapid succession.

X

Lock the vehicle with the key or KEYLESS-

GO.

The interior motion sensor is deactivated.

The interior motion sensor remains deactiva-

ted until:

R

the vehicle is unlocked again and

R

a door is opened and closed again and

R

the vehicle is locked again

To prevent a false alarm, deactivate the inte-

rior motion sensor if you lock your vehicle

and:

R

people or animals remain in the vehicle

R

the panorama sliding sunroof remains open

R

the side windows remain open

i UK only: your vehicle is equipped with a

double-lock function. The doors cannot be

Safety for Your Mercedes A Class 4 Door Third Generation (2012-2017)

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