2011 MERCEDES-BENZ B-CLASS HATCHBACK key

the belt pretensioning
.All settings made by
PRE-SAFE ®
can then be reversed.
If the seat belts are not released:
X Move the backrest or seat back slightly, but
only when the vehicle is stationary.
The belt pretensioning is reduced and the
locking mechanis mis released.
More information abouts eat-belt adjust-
ment ,aconvenience function integrated into
PRE-SAFE ®
, can be found in the "Seat-belt
adjustment" section (Y page 45).Seat belts
Important safety notes G
WARNING
A seat belt which is not worn correctly, or
which has not been engaged in the seat belt
buckle correctly, cannot provide the intended
level of protection. Under certain circumstan-
ces, this could cause severe or even fatal inju-
ries in the event of an accident.
Therefore, make sure that all occupants —in
particular, pregnan twomen —wear their seat
belts correctly at all times.
R The seat belt must fit snugly on your body
and must not be twisted.Therefore, avoid
wearing bulky clothing, e.g. a winter coat.
The shoulder section of the belt must be
routed across the centre of your shoulder
—onn o account across your neck or under
your arm —and pulled tight against your
uppe rbody. The lap belt must always pass
across your lap as low down as possible, i.e.
over your hip joints —not across your abdo-
men. If necessary, push the seat belt
slightly downwards and adjust it by pulling
it in the direction the seat belt retracts.
R Do not route the seat belt strap over sharp
or fragile objects. Please make sure that
such objects are not on or in your clothing,
e.g. spectacles, pens or keys etc. The seat
belt strap could become damaged and tear during an accident and you or other vehicle
occupants could be injured.
R Only one person should use each seat belt
at any one time. Children must never travel
sitting on the lap of another occupant. The
child will not be secured in the event of an
accident, heavy braking or sudden change
of direction .This may result in the child or
other occupants being seriously or fatally
injured.
R Persons under 1.50 mtall cannot wear the
seat belts correctly. For this reason secure
persons less than 1.50 m tall in specially
designed, suitable restraint systems.
R Children unde r1.50 mtall and younger
than twelve years of age canno twear the
seat belts correctly. For this reason secure
them in special suitable child restraint sys-
tems installed on a suitable seat. Additional
information can be found in the Operating
Instructions in the chapter "Safety", "Chil-
dren in the Vehicle". Observe the installa-
tion instructions of the child restraint sys-
tem manufacturer.
R Do not secure an object with a seat belt if
the seat belt is also being used by one of
the vehicle's occupants. G
WARNING
The seat belt does not offer the intended level
of protection unless the backrest is almost
vertical. Under certain circumstances, this
could cause severe or even fatal injuries in the
event of an accident.
Before starting a journey, make sure that the
seat is properly adjusted and that the back-
rest is almost vertical. G
WARNING
Ad irty or damaged seat belt or one that has
been modified or subjected to a load in an
accident no longer offers the intended level of
protection. Under certain circumstances, this
could cause severe or even fatal injuries in the
event of an accident. 44
Occupant safetySafety

For this reason, check regularly that the seat
belts are not damaged or dirty.
Always have damaged sea
tbelts or seat belts
that have been subjected to a load in an acci-
dent replaced at a qualified specialist work-
shop.
For safety reasons, Mercedes-Benz recom-
mends that you only use seat belts which have
been approved by Mercedes-Benz for your
vehicle.
Seat belts are the most effective means of
restraining the movement of vehicle occu-
pants in the event of an accident. This
reduces the risk of vehicle occupants coming
into contact with parts of the vehicle interior.
Fastening seat belts X
Adjust the seat and move the backrest to
an almost vertical position (Y page 86).
X Pull the seat belt smoothly through belt
sash guide :.
X Without twisting it, guide the shoulder sec-
tion of the seat belt across the middle of
your shoulder and the lap section across
your hips.
X Engage belt tongue ;in buckle =.
Seat belt adjustment:ifn ecessary, the driv-
er's and front-passenger seat belts auto- matically adjust to the upper body
(Y
page 45).
X If necessary, adjust the seat belt to the
appropriate height (Y page 45).
X If necessary, pull upwards on the shoulder
section of the seat belt to tighten the belt
across your body.
For more information about releasing the seat
belt with release button ?, see "Releasing
seat belts" (Y page 46).
Seat belt adjustment The seat-belt adjustment function adjusts the
driver's and front-passenger seat belt to the
upper body of the occupants.
The belt strap is tightened slightly when:
R
you engage the belt tongue in the belt
buckle and you then turn the key to position
2in the ignition lock.
R the key is in position 2in the ignition lock
and you then engage the belt tongue in the
buckle.
The seat-belt adjustment will apply a certain
tightening force if any slack is detected
between the 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 com-
puter (Y page 204).
The seat-belt adjustment is an integral part of
the PRE-SAFE ®
convenience function. More
information about PRE-SAFE ®
can be found
in the "PRE-SAFE ®
(preventative occupant
protection)" section (Y page 43).
Belt height adjustment You can adjust the seat belt height on the
driver's seat and the front-passenger seat.
Adjust the height so that the upper part of the
seat belt is routed across the centre of your
shoulder. Occupant safety
45Safety 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

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

Example: approval label on the child restraint system
Key to the letters used in the table:
XI SOFIX position tha tis 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 following table of "Recommended child restraint systems" (Y page 60).
Suitability of the rear seats for attaching ISOFIX child restraint systems Weight categories Size category Equipment Rear seat, left and
right
Carry-cot
F ISO/L1 X
G ISO/L2 X
0: up to 10 kg
up to approximately
6 months
E ISO/R1 IL
0+: up to 13 kg
up to approximately
15 months
E ISO/R1 IL
D ISO/R2 IL
C ISO/R3 IL
I: 9to 18 kg
between approx-
imately 9 months and
4 years D ISO/R2 IL
C ISO/R3 IL
B ISO/F2 IUF
B1 ISO/F2X IUF
A ISO/F3 IUFChildren in the vehicle
59Safety Z

EBD monitors and controls the brake pres-
sure on the rea rwheels to improve driving
stability while braking.
i Observe the "Important safety notes" sec-
tion (Y page 62). ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safety
and offers increased braking comfort.Ina ddi-
tion to the brakin gfunction ,ADAPTIVE BRAKE
also has the HOLD functio n(Ypage 162 )and
hill start assist (Y page 129). For further
information, see Driving tips (Y page 146).STEER CONTROL
G
WARNING
If there is an ESP ®
malfunction, you will not
receive any steering assistance from the
STEER CONTROL. The steering continues to
functio nwith power assistance.
STEER CONTROL helps you by transmitting a
noticeable steering force to the steering
wheel in the direction required for vehicle
stabilisation.
This steering assistance is provided in partic-
ular if:
R both right wheels or both left wheels are on
a wet or slippery road surface when you
brake.
R the vehicle starts to skid.
You have control over the steering at all
times. Anti-theft systems
Immobiliser
X To activate: remove the key fro mthe igni-
tion lock.
X To deactivate: switch on the ignition. The immobiliser prevents your vehicle from
being started without the correct key.
i
The immobiliser is always deactivated
when you start the engine. ATA (Anti-Theft Alarm system)
X
To prime: lock the vehicle with the key.
Indicator lamp :flashes. The alarm sys-
tem is primed after approximately
15 seconds.
X To deactivate: unlock the vehicle with the
key.
X To stop the alarm: insert the key into the
ignition lock.
The alarm is switched off.
or
X Press the %or& button on the key.
The alarm is switched off.
Av isual and audible alarm is triggered if the
alarm system is primed and you open:
R a door
R the vehicle with the emergency key ele-
ment
R the tailgate
R the bonnet
The alarm is not switched off, even if you
close the open door that has triggered it, for
example. 68
Anti-theft systemsSafety

Tow-away protection
An audible and visual alar mis triggered if your
vehicle's angle of inclination is altered while
tow-away protection is primed. This occurs if
the vehicle is jacked up on one side, for exam-
ple.
To activate:
X Lock the vehicle with the key.
Tow-away protection is primed after
approximately 30 seconds.
To deactivate:
X Unlock the vehicle with the key.
Tow-away protection is switched off auto-
matically. Deactivating:
X
Remove the key from the ignition lock.
X Press button :.
Indicator lamp ;lights up briefly.
X Lock the vehicle with the key.
Tow-away protection is deactivated.
Tow-away protection remains deactivated
until:
R the vehicle is unlocked again.
R a door is opened and closed again.
R the vehicle is locked again. To prevent a false alarm, deactivate tow-away
protection manually if your vehicle:
R
is being transported
R is being loaded onto a ferry or car trans-
porter, for example
R is parked on a movable surface, e.g. in a
split-level garage Interior motion sensor
When the interior motion sensor is primed, a
visual and audible alarm is triggered if move-
ment is detected in the vehicle interior. This
occurs if someone reaches into the vehicle
interior, for example.
To activate:
X Make sure that:
R
the side windows are closed.
R the panorama sliding sunroof is closed.
This will prevent false alarms.
X Lock the vehicle with the key.
The interior motion sensor is primed after
approximately 30 seconds.
To deactivate:
X Unlock the vehicle with the key.
The interior motion sensor is switched off
automatically. Anti-theft systems
69Safety Z

Deactivating:
X
Remove the key from the ignition lock.
X Press button :.
Indicato rlamp ;flashes briefly.
X Loc kthe vehicle with the key.
The interior motion sensor is deactivated.
The interior motion sensor remains deactiva-
ted until:
R the vehicle is unlocked again.
R a door is opened and closed again.
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 side windows remain open.
R the panorama sliding sunroof remains
open.
i UK only: your vehicle is equipped with a
double lock function. The doors cannot be
opened from the inside if the vehicle has
been locked with the key (Y page 76).
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 76).70
Anti-theft systemsSafety