airbag MERCEDES-BENZ B-CLASS HATCHBACK 2011 User Guide

Front sidebags
:and rea rsidebags ;
deploy nex tto the outer seat cushions.
They are deployed:
R on the side on which an impact occurs
R at the start of an accident with a high rate
of lateral vehicle deceleration or accelera-
tion, e.g. in a side impact
R independently of the use of the seat belt
R independently of the front airbags
R independently of the belt tensioners
Windowbags The windowbags enhance the level of protec-
tion for the head (but not chest or arms), of
the vehicle occupants on the side of the vehi-
cle on which the impact occurs.
The windowbags are integrated into the side
of the roof frame and deployed in the area
from the A-pillar to the C-pillar. Windowbags
:are deployed:
R on the side on which an impact occurs
R at the start of an accident with a high rate
of lateral vehicle deceleration or accelera-
tion, e.g. in a side impact
R regardless of whether the front-passenger
seat is occupied
R independently of the use of the seat belt
R independently of the front airbags PRE-SAFE
®
(preventative occupant
protection)
! Make sure that there are no objects in the
footwell or behind the seats when moving
the seat back. There is a risk that the seats
and/or the objects could be damaged.
PRE-SAFE ®
takes pre-emptive measures to
protec toccupants in certain hazardous sit-
uations.
PRE-SAFE ®
intervenes:
R in emergency braking situations, e.g. if BAS
is activated or for vehicles with DISTRONIC
PLUS, BAS PLUS intervenes powerfully
R if the radar sensor system detects an immi-
nent danger of collisio nincertain situa-
tions (on vehicles with DISTRONIC PLUS)
R in critical driving situations, e.g. when phys-
ical limits are exceed and the vehicle under-
steers or oversteers severely
PRE-SAFE ®
takes the following measures
depending on the hazardous situation detec-
ted:
R the fron tseat belts are pre-tensioned.
R it improves the seat position if, under acci-
dent conditions, the passenger seat is in an
unfavourable position.
R if the vehicle skids, the panorama sliding
sunroof and the side windows are closed so
that only a small gap remains.
If the hazardous situation passes without
resulting in an accident, PRE-SAFE ®
slackens Occupant safety
43Safety Z

You can also cancel the rear seat belt status
indicator immediately:
X
Press the aor% button on the steer-
ing wheel.
i The status indicator for the rear-compart-
men tseat belts is only available for certain
countries.
Belt tensioners, belt force limiters G
WARNING
If the seat belt tensioners have been trig-
gered, they provide no additional protection
in the event of another accident. Therefore,
have belt tensioners which have been trig-
gered replaced at a qualified specialist work-
shop.
Comply with safety regulations when dispos-
ing of belt tensioners. Any Mercedes-Benz
Service Centre can provide details of these
regulations.
! If the front-passenger seat is not occu-
pied, do not engage the seat belt tongue in
the buckle on the front-passenger seat.
Otherwise, the belt tensioner could be trig-
gered in the event of an accident.
The fron tseat belts are equipped with belt
tensioners and belt force limiters. The outer
seat belts in the rear are equipped with seat
belt tensioners.
The belt tensioners tighten the seat belts in
an accident, pulling them close against the
body.
Belt tensioners do not correct incorrect seat
positions or incorrectly fastened seat belts.
Belt tensioners do not pull vehicle occupants
back towards the backrest.
When triggered, seat belt force limiters help
to reduce the peak forc eexerted by the seat
belt on the vehicle occupant.
The front belt force limiters are synchronised
with the front airbags, which take on a part of
the deceleratio nforce. Thus, the force exer- ted on the occupant is distributed over a
greater area.
The belt tensioners can only be activated
when:
R the ignition is switched on.
R the restraint systems are operational; see
"SRS warning lamp" (Y page 39).
R the belt tongue is engaged in the buckle on
each of the three-point seat belts in the
front.
The belt tensioners on the outside seats in the
rear compartment are triggered independ-
ently of the lock status of the seat belts.
The belt tensioners are triggered depending
on the type and severity of an accident:
R in the event of a head-on or rear-end colli-
sion if the vehicle decelerates or acceler-
ates rapidly in a longitudinal direction dur-
ing the initial stages of the impact
R in the event of a side impact if the vehicle
is subjected to high lateral acceleration/
deceleration
If the airbags are deployed, you will hear a
bang, and a small amount of powder may also
be released. Only in rare cases will the bang
affect your hearing. The powder that is
released generally does not constitute a
health hazard. The 6SRS warning lamp
lights up. Children in the vehicle
Child restraint systems
Important safety notes G
WARNING
To reduce the risk of serious or even fatal
injury to the child in the event of a sudden
change in direction, braking or an accident:
R children less than 1.50 m tall and under
twelve years of age must always be secured
in special child restraint systems on a suit-
able vehicle seat. This is necessary Children in the vehicle
47Safety
Z

Mercedes-Ben
zrecommends that you only
use the child restraint systems listed at
(Y page 60).
You can obtain further information about the
correct child restraint system from any
Mercedes-Benz Service Centre.
i It is advisable to use Mercedes-Benzc are
products to clean child restraint systems.
You can obtain informatio nabout this at
any Mercedes-Benz Service Centre.
Child seat on the front-passenger seat G
WARNING
If the front-passenger airbag is not disabled:
R a child secured in a child restraint system
on the front-passenger seat could be seri-
ously and even fatally injured by the front-
passenger airbag deploying. This is espe-
cially a risk if the child is in the immediate
vicinity of the front-passenger airbag when
it deploys.
R never secure a child on the front-passenger
seat in a rearward-facing child restraint sys-
tem. Only secure a rearward-facing child
restraint system on a suitable rear seat.
R always move the front-passenger seat to
the rearmos tposition if you secure a child
in a forward-facing child restraint system
on the front-passenger seat.
The front-passenger airbag is not disabled:
R on vehicles without automatic child seat
recognition on the front-passenger seat
R in vehicles with automatic child seat rec-
ognition in the front-passenger seat, if no
special child restraint system with trans-
ponders for automatic child seat recogni-
tion in the front-passenger seat has been
fitted
R on vehicles with automatic child seat rec-
ognition on the front-passenger seat, if the
PASSENGER AIRBAG OFF indicator lamp
4 is not lit.
To make you aware of this danger, a corre-
sponding warning sticker has been affixed on the dashboard and on both sides of the sun
visor on the front-passenger side.
Information about recommended child
restraint systems is available at any
Mercedes-Benz Service Centre.
Warning notice on the front-passenger sun visor
Warning symbol for a rearward-facing child
restraint system
Do not use a rearward-facing child restraint
system for a child on
aseat which is already
protected by an airbag.
Automatic child seat recognition on the
front-passenger seat G
WARNING
If the 4 PASSENGER AIRBAG OFF indica-
tor lamp does not light up when the child
restraint system is fitted, the front-passenger
airbag has not been disabled. If the front-
passenger airbag deploys, the child could be
seriously or even fatally injured. Children in the vehicle
49Safety
Z

Proceed as follows:
R
do not use a rearward-facing child restraint
system on the front-passenger seat.
R fit a rearward-facing child restraint system
on a suitable rear seat.
or
R only use a forward-facing child restraint
system on the front-passenger seat and
move the front-passenger seat to the rear-
most position.
R have the automatic child seat recognition
checked at a qualified specialist workshop.
To ensure that the automatic child seat rec-
ognition on the front-passenger seat func-
tions/communicates correctly, never place
objects, e.g. a cushion, under the child
restraint system. The entire base of the child
restraint system must always rest on the seat
cushion. An incorrectly fitted child restraint
system cannot perform its intended protec-
tive function in the event of an accident, and
could lead to injuries. G
WARNING
Do not place electronic devices on the front-
passenger seat, e.g.:
R laptops, when switched on
R mobile phones
R cards with transponders, e.g. ski passes or
access cards
Signals from electronic equipment can cause
interference in the automatic child seat rec-
ognition sensor system. This can lead to a
system malfunction. This may cause the
4 PASSENGER AIRBAG OFF indicator
lamp to light up without there being a child
seat with transponders for automatic child
seat recognition fitted. The front-passenger
airbag will not then deploy during an accident.
It is also possible that the 6SRS warning
lamp lights up and/or the 4PASSENGER
AIRBAG OFF indicator lamp does not light up briefly when you turn the key in the ignition
lock to position 2. If your vehicle does not have automatic child
seat recognition 1
on the front-passenger
seat, 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. The front-passenger seat sensor system for
child restraint systems detects whether a
special Mercedes-Benz child seat with a
transponder for automatic child seat recog-
nition has been fitted. In this case,
4
PASSENGER AIRBAG OFF indicator lamp :
lights up. The front-passenger fronta irbag is
disabled.
1 Vehicles without automatic child seat recognition on the front-passenge rseat: if you turn the key to position
2int he ignition lock, the 4PASSENGER AIRBAG OFF indicator lamp lights up briefly but has no function.
It does not indicate that there is automatic child seat recognition on the front-passenger seat. 50
Children in the vehicleSafety

i
If the front-passenger front airbag is dis-
abled by the automatic child seat recogni-
tion, the following remaine nabled on the
front-passenger side:
R the sidebag
R the windowbag
R the belt tensioner
ISOFIX chil dseat securing system for
the rear seats G
WARNING
Ac hild restraint system secured by the ISOFIX
child seat securing system does not provide
sufficient protection for children weighing
more than 22 kg. For this reason, do not
secure children weighing more than 22 kg in
a child restraint system secured by the ISOFIX
child seat securing system. If the child weighs
more than 22 kg, secure the child restraint
system using a three-point seat belt. G
WARNING
The child restraint system cannot perform its
protective function if it is not correctly fitted
to a suitable vehicle seat. The child cannot be
restrained in the event of an accident, heavy
braking or sudden changes of direction. The
child could be seriously or even fatally injured.
For this reason, when fitting a child restraint
system, observe the manufacturer's installa-
tion instructions and the correct use of the
child restraint system.
For reasons of safety, only use child restraint
systems with the ISOFIX child seat securing
system on the rear seats.
We recommend that you use the ISOFIX child
restraint systems that have been recommen-
ded for Mercedes-Benz.
An incorrectly fitted child restraint system
could come loose and seriously or even fatally
injure the child or other vehicle occupants.
When fitting the child restraint system, always
make sure that it is engaged correctly in the
securing rings on both sides. G
WARNING
Please note that if child restraint systems, or
their retaining systems, are damaged or sub-
jected to a load in an accident, they may not
be able to provide their protective function.
This could result in serious or even fatal inju-
ries to the secured child in the event of an
accident, heavy braking or a sudden change
in direction.
For this reason, have child restraint systems
and their anchorages which have been dam-
aged or subjected to a load in an accident
checked immediately at a qualified specialist
workshop.
! When fitting the child restraint system,
make sure that the seat belt for the centre
seat does not get trapped. Otherwise, the
seat belt could be damaged.
ISOFIX is a standardised securing system for
specially designed child restraint systems on
the rear seats. The ISOFIX securing rings for
two ISOFIX child restraint systems are fitted
on the left and right of the rear seats. :
ISOFIX securing rings
X Install the ISOFIX child restraint system.
Comply with the manufacturer's instruc-
tions when installing the ISOFIX child
restraint system.
Top Tether G
WARNING
Make sure that the rear seat backrest is fully
locked. When the red lock verification indica- Children in the vehicle
51Safety
Z

Problems with child seat recognition
Problem Possible causes/consequences and
M Solutions
The
4 PASSENGER
AIRBAG OFF indicator
lamp on the centre con-
sole is lit. As
pecial Mercedes-Benz child seat with a transponder for auto-
matic child seat recognition has been fitted to the front-passenger
seat. The front-passenger fron tairbag has therefore been disabled
as desired. G
Risk of injury
There is no child seat fitted to the front-passenger seat .Automatic
child seat recognition is malfunctioning.
It is also possible that the 6SRS warning lamp light sup and/
or the 4PASSENGER AIRBAG OFF indicator lamp does not light
up briefly when you switch the ignition on.
X Remove electronic equipment from the front-passenger seat,
e.g.:
R
laptop
R mobile phone
R cards with transponders, such as ski passes or access cards
If the 4 PASSENGER AIRBAG OFF indicator lamp is still lit:
X Visit a qualified specialist workshop. Integrated child seat (ICS)
Important safety notes
G
WARNING
To reduce the risk of serious or even fatal
injury to the child in the event of a sudden
change in direction, braking or an accident:
R you must follow the manufacturer's instal-
lation instructions for the child seat when
fitting the integrated child seat (ICS) pad-
ded play table and side head restraint and
when fastening the seat belt.
R do not modify the integrated child seat, the
ICS padded play table or the side head
restraint. Do not use protective covers.
R make sure that the ICS padded play table
and the side head restraints do not become trapped or damaged. This could happen
when you
- close the doors
- adjust the seat
- store the ICS padded play table and the
side head restraints
- transport heavy objects
R replace the integrated child seat, the pad-
ded play table and the side head restraints
if these were damaged or subjected to
heavy loads during an accident.
R note: children who weigh less than
12.5 kg require a different child restraint
system. Information about other child
restraint systems is available from any
Mercedes-Benz Service Centre.
R the vehicle's rear seat backrest must be
locked in position.
The integrated child seats are integrated into
the right and left-hand rear seat cushions. In Children in the vehicle
53Safety Z

Suitable positioning of the child restraint systems
Key to the letters used in the table:
XS
eat which is unsuitable for children in this weight category.
US uitable for child restraint systems in the Universal category that are approved for use in
this weigh tcategory.
UF Suitable for forward-facing child restraint systems that belong to the "Universal" category and are approved for use in this weigh tcategory.
LS uitable for child restraint systems as recommended, see the following table of "Recom-
mended child restraint systems" (Y page 60). Sea
tpositions Weigh
tcatego-
ries Front-passenger seat Rear seat
Front-
passenge
rair-
bag is not disa-
bled: The front-
passenger air-
bag is disa-
bled
2 Left, right Centre
Group 0: up to
10 kg
X
U
3
, L 3 U, L U, L
Group 0+: up
to 13 kg
X
U
3
, L 3 U, L U, L
Group I: 9 to
18 kg
U
3
, L 3 U
3
, L 3 U, L U, L
Group II: 15 to
25 kg
U
3
, L 3 U
3
, L 3 U, L U, L
Group III: 22 to
36 kg
U
3
, L 3 U
3
, L 3 U, L U, L
"Universal" category child restraint systems can be recognised by their orange approval label.
2 Vehicles with automatic child seat recognition on the front-passenger seat: a child restraint syste mofthe
"Universal" category with a transponder for automatic child seat recognition must be fitted. The 4
PASSENGER AIRBAG OFF indicator lamp must be lit.
3 Move the front-passenger seat to the rearmost and highest position, the backrest to an almost vertical
position, and the belt height adjustment to the lowest position. 58
Children in the vehicleSafety

Seats
Important safety notes
G
WARNING
The seats can still be adjusted when there is
no key in the ignition lock. For this reason,
children should never be left unsupervised in
the vehicle. They could adjust the seats and
become trapped. G
WARNING
Only adjust the driver's seat when the vehicle
is stationary. You will otherwise be distracted
from the road and traffic conditions and you
could lose control of the vehicle as a result of
the seat moving. This could cause an acci-
dent. G
WARNING
If you adjust the seat height carelessly, you or
others could be trapped and thereby injured.
Children in particular could unintentionally
press the buttons to electrically adjust the
seats and become trapped.
Take care that:
R while moving the seats, your hands do not
get under the lever assembly of the seat
adjustment system.
R children in the vehicle do not slide their
hands under the levers. G
WARNING
Make sure that nobody can become trapped
when adjusting the seats.
Observe the notes on airbags.
Secure children as recommended; see the
"Children in the vehicle" section. G
WARNING
As eat belt can only offer its intended degree
of protection when the backrest is almost ver-
tical and the occupant is sitting upright. Avoid
seat positions that do not allow the seat belt
to be routed correctly. Adjust the backrest so
that it is as upright as possible. Never travel with the backrest reclined too far backwards.
You could otherwise be seriously or even
fatally injured in the event of an accident or
sudden braking.
G
WARNING
Make sure that the back of your head is sup-
ported at eye level by the central area of the
head restraint. If your head is not supported
correctly by the head restraint, you could suf-
fer a severe neck injury in the event of an
accident. Never drive if the head restraints are
not engaged and set correctly.
! To avoid damage to the seats and the seat
heating, observe the following information:
R do not spill any liquids on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
R if the seat covers are damp or wet, do not
switch on the seat heating. The seat
heating should also not be used to dry
the seats.
R clean the seat covers as recommended;
see the "Interior care" section.
R do not transport heavy loads on the
seats. Do not place sharp objects on the
seat cushions, e.g. knives, nails or tools.
The seats should only be occupied by
passengers, if possible.
R when the seat heating is in operation, do
not cover the seats with insulating mate-
rials, e.g. blankets, coats, bags, seat cov-
ers, child seats or booster seats.
! Make sure that there are no objects in the
footwell or behind the seats when moving
the seat back. There is a risk that the seats
and/or the objects could be damaged.
i The head restraints in the fron tand rear
seats can be removed.
For more information, contact a qualified
specialist workshop. Seats
87Seats, steering wheel and mirrors Z

Main-beam headlamps
X
To switch on the main-beam head-
lamps: turn the key in the ignition lock to
position 2or start the engine.
X Turn the light switch to LorÃ.
X Press the combination switch beyond the
pressure point in the direction of
arrow :.
In the Ãposition, the main-beam head-
lamps are only switched on when it is dark
and the engine is running.
The K indicator lamp in the instrument
cluster lights up when the main-beam head-
lamps are switched on.
X To switch off the main-beam head-
lamps: move the combination switch back
to its normal position.
The K indicator lamp in the instrument
cluster goes out.
Headlamp flasher X
To switch on: turn the key in the ignition
lock to position 1or 2, or start the engine.
X Pull the combination switch in the direction
of arrow =. Hazard warning lamps The hazard warning lamps automatically
switch on if:
R
an airbag is deployed.
R the vehicle decelerates rapidly from a
speed of more than 70 km/h and comes to
a standstill.
X To switch on the hazard warnin glamps:
press button :.
All turn signals flash. If you now switch on
a turn signal using the combination switch,
only the turn signal lamp on the corre-
sponding side of the vehicle will flash.
X To switch off the hazard warning
lamps: press button :.
The hazard warning lamps switch off auto-
matically if the vehicle reaches a speed of
over 10 km/h again after a full brake appli-
cation.
i The hazard warning lamps still operate if
the ignition is switched off. Intelligen
tLight System
Important notes The Intelligent Light System is a syste
mthat
adjusts the headlamps automatically to suit
the prevailing driving and weather conditions.
It offers advanced functions for improved illu-
mination of the road surface, e.g. depending
on the vehicle speed or weather conditions.
The system includes the active light function,
cornering light function, motorway mode and
extended range foglamps. The system is only
active when it is dark.
You can activate or deactivate the "Intelligent
Light System" using the on-board computer
(Y page 201). Exterior lighting
99Lights and windscreen wipers Z

Display messages Possible causes/consequences and
M Solutions
!
Turn on the igni‐
tion to release
the parking brake The red
!indicato rlamp is lit.
You attempted to release the electric parking brak ewhile the igni-
tion was switched off.
X Turn the key to position 1in the ignition lock. J
Check brake fluid
level There is insufficient brake fluid in the brake fluid reservoir.
In addition, the red
Jwarning lamp in the instrument cluster
lights up and a warning tone sounds.
G WARNING
The braking effect may be impaired.
There is a risk of accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Engage the electric parking brake.
X Do not top up the brake fluid. Topping up will not remedy the
fault.
X Consult a qualified specialist workshop. #
Check brake wear The brake pads/linings have reached their wear limit.
X
Visit a qualified specialist workshop. PRE-SAFE
inoperative See
Owner's Manual Important functions of PRE-SAFE
®
have failed. All other occupant
safety systems, e.g. airbags, remain available.
X Visit a qualified specialist workshop immediately. 212
Display messagesOn-board computer and displays