2013 MERCEDES-BENZ B-CLASS SPORTS ignition

Problems with the air bag deactivation system
Problem Possible causes/consequences and
M Solutions
The
45
indicator lamp on the
center console is lit. As
pecial Mercedes-Benz child seat with transponders for an air
bag deactivation system has been installed on the front-passenger
seat. The front-passenger air bag has therefore been deactivated
as desired. G
WARNING
There is no child seat installed on the front-passenger seat. The
air bag deactivation system is malfunctioning.
It is also possible that the 6SRS warning lamp lights up and/
or the 45 indicator lamp does not light up briefly when you
switch the ignition on.
There is a risk of injury.
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 45 indicator lamp remains lit:
X Visit a qualified specialist workshop. 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
"Recommended child restraint systems" (Y page 56).54
Children in the vehicleSafety

Child-proof locks
Important safety notes G
WARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and loc kthe vehicle.
Do not leave children unattended in the
vehicle, even if they are secured in a child
restraint system, or with access to an
unlocked vehicle. Achild's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. The children
could:
R injure themselves on parts of the vehicle
R be seriously or fatally injured through
excessive exposure to extreme heat or cold
R injure themselves or cause an accident with
vehicle equipment that can be operated
even if the SmartKey is removed from the
ignition lock or removed from the vehicle,
such as seat adjustment, steering wheel
adjustment, or the memory function
If children open a door, they could injure other
persons or get out of the vehicle and injure
themselves or be injured by following traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and the child could be burned on these
parts.
Child-proof locks for the rear doors G
WARNING
Children could open a rear door from inside
the vehicle. This could result in serious
injuries or an accident. Therefore, when
children ride in the rear always secure the rear
doors with the child-proof locks. You secure each door individually with the
child-proof locks on the rear doors.
Adoor
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.
X To activate: press the child-proof lock
lever up in the direction of arrow :.
X 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 ;.
Override feature for the rear side
windows G
WARNING
When children ride on the vehicle's rear seats,
activate the override switch. Otherwise, the
children could be injured, e.g. by trapping
themselves in the rear side window. X
To activate/deactivate: press button:.
If the indicator lamp is lit, operation of the
rear side windows is deactivated. 58
Children in the vehicleSafety

Operation is only possible using the
switches in the driver's door. If the
indicator lamp is off, operation is possible
using the switches in the rear
compartment.
Driving safety systems
Driving safety systems overview
In this section, you will find information about
the following driving safety systems:
R ABS ( Anti-lock BrakingSystem)
R BAS ( Brake Assist System)
R COLLISION PREVENTION ASSIST (adaptive
Brake Assist and distance warning signal)
R Adaptive brake lamps
R ESP ®
(Electronic StabilityProgram)
R EBD ( Electronic Brake force Distribution)
R ADAPTIVE BRAKE (Y page 64)
R STEER CONTROL Important safety notes
If you fail to adapty our driving style or
become distracted, the driving safety
systems can neither reduce the risk of
accident nor override the laws of physics.
Driving safety systems are merely aids
designed to assist driving. You are
responsible for the distance to the vehicle in
front, for vehicle speed and for braking in
good time. Always adapt your driving style to
suit the prevailing road, weather and traffic
conditions and maintain asafe distance from
the vehicle in front. Drive carefully.
i The driving safety systems described only
work as effectively as possible when there
is adequate contact between the tires and
the road surface. Pay particular attention
to the informatio nregarding tires,
recommended minimum tire tread depths
etc.int he "Wheels and tires" section
(Y page 292). In wintry driving conditions, always use
winter tires (M+S tires) and if necessary,
snow chains. Only in this way will the
driving safety systems described in this
section work as effectively as possible.
ABS (Anti-lockB
raking System)
Important safety notes i
Observe the "Important safety notes"
sectio n(Ypage 59). G
WARNING
If ABSi s faulty, the wheels could lock when
braking. The steerability and braking
characteristics may be severely impaired.
Additionally, further driving safety systems
are deactivated. There is an increased danger
of skidding and accidents.
Drive on carefully. Have ABS checked
immediately at a qualified specialist
workshop.
When ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information
on the ABS warning lamp (Y page 220) and
display messages which may be shown in the
instrument cluster (Y page 194).
ABS regulates brake pressure in such a way
that the wheels do not lock when you brake.
This allows you to continue steering the
vehicle when braking.
ABS works from a speed of about 5 mph
(8 km/h) upwards, regardless of road-surface
conditions. ABS works on slippery roads,
even if you only brake gently.
The yellow !ABS warning lamp in the
instrument cluster lights up when the ignition
is switched on. It goes out when the engine is
running. Driving safety systems
59Safety Z

Any unauthorized modification to this
device could void the user's authority to
operate the equipment.
Adaptive brake lamps
If you brake sharply fro maspeed of more
than 50 km/h or if braking is assisted by BAS
or Adaptive Brake Assist, the brake lamps
flash rapidly. In this way, traffic traveling
behind you is warned in an even more
noticeable manner.
If you brake sharply to a standstill from a
speed of more than 70 km/h, the hazard
warning lamps are activated automatically. If
the brakes are applied again, the brake lamps
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 99).
i Adaptive brake lamps are only available in
certain countries. ESP
®
(Electronic Stability Program)
Important safety notes i
Observe the "Important safety notes"
section (Y page 59). G
WARNING
If ESP ®
is malfunctioning, ESP ®
is unable to
stabilize the vehicle. Additionally, further
driving safety systems are deactivated. This
increases the risk of skidding and an accident.
Drive on carefully. Have ESP ®
checked at a
qualified specialist workshop.
! When testing the electric parking brake
on a braking dynamometer, switch off the
ignition. Application of the brakes by
ESP ®
may otherwise destroy the brake
system. When towing your vehicle with the front axle
raised, pay attention to the notes about
ESP
®
(Y page 286).
ESP ®
is deactivated if the åwarning lamp
in the instrument cluster lights up
continuously when the engine is running.
If the ÷ 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 222) and display messages which
may be shown in the instrument cluster
(Y page 194).
If ESP ®
detects that the vehicle is deviating
from the direction desired by the driver, one
or more wheels are braked to stabilize 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 stabilize the vehicle during braking.
If ESP ®
intervenes, the ÷ESP®
warning
lamp flashes in the instrument cluster.
If ESP ®
intervenes:
X Do not deactivate ESP ®
under any
circumstances.
X Only depress the accelerator pedal as far
as necessary when pulling away.
X Adapt your driving style to suit the
prevailing road and weather conditions.
i Only use wheels with the recommended
tire sizes. Only then will ESP ®
function
properly.
ETS (Electronic Traction System) i
Observe the "Important safety notes"
section (Y page 59).
Traction control is part of ESP ®
.
Traction control brakes the drive wheels
individually 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. Driving safety systems
63Safety Z

Power steering will, however, continue to
function.
Theft deterrent locking system
Immobilizer
The immobilizer prevents your vehicle from
being started without the correct SmartKey.
X To activate: remove the SmartKey from
the ignition lock.
X To deactivate: switch on the ignition.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. The
engine can be started by anyone with a valid
SmartKey that is left inside the vehicle.
i The immobilizer is always deactivated
when you start the engine.
In the event that the engine cannot be
started when the starter battery is fully
charged, the immobilizer may be faulty.
Contact an authorized Mercedes-Benz
Center or call 1-800-FOR-MERCedes (in the
USA) or 1-800-387-0100 (in Canada).
In the event that the engine cannot be
started when the starter battery is fully
charged, the immobilizer may be faulty.
Contact an authorized Mercedes-Benz
Center or call 1-800-387-0100. ATA (anti-theft alarm system)
Function Av
isual and audible alarm is triggered if the
alarm system is armed and you open:
R a door
R the vehicle with the mechanical key
R the tailgate
R the hood
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 Tele Aid system
automatically initiates a call to the
Customer Assistance center.T he Tele Aid
system will initiate the call provided that:
R you have subscribed to the Tele Aid
service.
R the Tele Aid service has been activated
properly.
R the required mobile phone, power supply
and GPS are available.
Activating X
Lock the vehicle with the SmartKey.
Indicator lamp :flashes. The alarm
system is armed after approximately
15 seconds.
Deactivating X
Unlock the vehicle with the SmartKey.
or
X Insert the SmartKey into the ignition lock.
Turning off the alarm X
Insert the SmartKey into the ignition lock.
The alarm turns off.
or
X Press the %or& button on the
SmartKey.
The alarm turns off. Theft deterrent locking system
65Safety Z

Interior motion sensor
Function When the interio
rmotion sensor is armed, a
visual and audible alarm is triggered if
movemen tis detected in the vehicle interior.
This occurs if someone reaches into the
vehicle interior, for example.
Activating X
Make sure that:
R
the side windows are closed.
R the panorama roof with power tilt/
sliding panel is closed.
This will prevent false alarms.
X Make sure that the doors and tailgate are
closed.
Only then is the interior motion sensor
armed.
X Lock the vehicle with the SmartKey.
The interior motion sensor is armed after
approximately 30 seconds.
Deactivating X
Unlock the vehicle with the SmartKey.
or
X Insert the SmartKey into the ignition lock.
The interior motion sensor is disarmed
automatically.
Deactivating X
Remove the SmartKey from the ignition
lock.
X Press button :.
Indicator lamp ;flashes briefly.
X Lock the vehicle with the SmartKey.
The interior motion sensor is deactivated.
The interior motion sensor 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 the
interior 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 roof with power tilt/sliding
panel remains open. 66
Theft deterrent locking systemSafety

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Please read the information on qualified
specialist workshops (Y page 23).SmartKey
Important safety notes
G
WARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in a child
restraint system, and do not give them access
to an unlocked vehicle. Achild's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function.
If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very hot, and a child could be burned on these
parts.
G
WARNING
Do not attach any heavy or large key rings to
the key that is inserted in the ignition. If a key
ring is too heavy or too large, the weight acting
on the key could cause it to turn in the ignition
lock or catch on the steering wheel. This could
cause the engine to be switched off suddenly.
You could lose control of the vehicle and
cause an accident.
Keep the SmartKey away from strong
magnetic fields. Otherwise, the remote
control function could be affected.
Do not keep the SmartKey:
R with electronic devices, e.g. a mobile
phone or another SmartKey
R with metallic objects, e.g. coins or metal
foil
R inside metallic objects, e.g. a metal case SmartKey functions
:
& To lock the vehicle
; % To unlock the vehicle
X To unlock centrally: press the%
button.
If you do not open the vehicle within
approximately 40 seconds of unlocking:
R the vehicle is locked again.
R the theft deterrent locking system is armed
again. 68
SmartKeyOpening/closing

X
To lock centrally: press the&button.
The SmartKey centrally locks/unlocks:
R the doors
R the tailgate
R the fuel fille rflap
When unlocking, the tur nsignals flash once.
When locking, they flash three times.
When it is dark, the surround lighting also
comes on if it is activated in the on-board
computer (Y page 190).
You can also set an audible signal to confirm
that the vehicle has been locked. The audible
signal can be activated and deactivated using
the on-board computer (Y page 191).Changing the settings of the locking
system
You can change the settings of the locking
system. When you the nunlock the vehicle
only the driver's door and the fuel fille rflap
are unlocked. This is useful if you frequently
travel on your own.
X To change the setting: press and hold
down the %and& buttons
simultaneously for approximately six
seconds until the battery chec klamp
(Y page 70) flashes twice.
i If the setting of the locking system is
changed within the signal range of the
vehicle, pressing the &or% button:
R locks or
R unlocks the vehicle
The SmartKey now functions as follows:
X To unlock the driver's door: press the
% button once.
X To unlock centrally: press the%
butto ntwice.
X To lock centrally: press the&button.
X To restore the factory settings: press
and hold down the %and& buttons
simultaneously for approximately six seconds until the battery check lamp
flashes twice (
Ypage 70). Mechanical key
General notes If the vehicle can no longer be unlocked with
the SmartKey, use the mechanical key.
If you use the mechanical key to unloc
kand
open the driver's door, the anti-thef talarm
system will be triggered ( Ypage 65).
There are several ways to tur noff the alarm:
X Press the %or& button on the
SmartKey.
or
X Insert the SmartKey into the ignition lock.
If you unlock the vehicle using the mechanical
key, the fuel filler flapw ill not be unlocked
automatically.
X To unlock the fuel filler flap: insert the
SmartKey into the ignition lock.
Removing the mechanical key X
Push release catch :in the direction of
the arrow and at the same time remove
mechanical key ;from the SmartKey. SmartKey
69Opening/closing Z