ignition MERCEDES-BENZ B-CLASS SPORTS 2015 Owners Manual

Fog lampsSwitching on/off .......................... .105
Folding table ...................................... 251
Front fog lamps
Display message ............................ 220
Switching on/off ........................... 105
Front-passenger seat
Folding the backrest forward/
back ............................................... 251
Fuel
Additives ........................................ 337
Consumption information .............. 337
Consumption statistics .................. 196
Displaying the current consump-
tion ................................................ 196
Displaying the range ..................... .196
Driving tips ................................... .156
E10 ................................................ 336
Fuel gauge ....................................... 29
Grade (gasoline) ............................ 336
Important safety notes .................. 335
Problem (malfunction) ................... 152
Refueling ........................................ 150
Tank content/reserve fuel ............. 336
Fuel filler flap
Opening ......................................... 151
Fuel level
Calling up the range (on-board
computer) ...................................... 196
Fuel tank
Capacity ........................................ 336
Problem (malfunction) ................... 152
Fuses
Allocation chart ............................ .300
Before changing ............................ .299
Fuse box in the engine compart-
ment .............................................. 299
Fuse box in the front-passenger
footwell .......................................... 300
Important safety notes .................. 298
G
Garage door opener
Clearing the memory ..................... 266
General notes ................................ 263
Important safety notes .................. 264
Opening/closing the garage door .. 266 Programming (button in the rear-
view mirror) ................................... 264
Synchronizing the rolling code ....... 264
Gasoline ............................................. 336
Genuine parts ...................................... 20
Glove box .......................................... .249
H
Hazard warning lamps
Display message ............................ 233
Switching on/off ........................... 107
Head restraints
Adjusting ......................................... 94
Adjusting (manually) ........................ 95
Adjusting (rear) ................................ 95
Headlamps
Fogging up ..................................... 108
see Automatic headlamp mode
Heating
see Climate control
High beam flasher .............................107
High-beam headlamps
Adaptive Highbeam Assist ............. 107
Changing bulbs .............................. 111
Display message ............................ 220
Switching on/off ........................... 106
Hill start assist .................................. 138
HOLD function
Activating ....................................... 171
Deactivating ................................... 171
Display message ............................ 225
Function/notes ............................ .170
Hood
Closing .......................................... .271
Display message ............................ 232
Important safety notes .................. 270
Opening ......................................... 270
Horn ...................................................... 28
Hydroplaning ..................................... 160
I
Ignition lock
see Key positions
Immobilizer .......................................... 67
10Index

SeatsAdjusting (electrically) ..................... 94
Adjusting (manually) ........................ 94
Adjusting the 4-way lumbar sup-
port .................................................. 95
Adjusting the head restraint ............ 94
Cleaning the cover ........................ .281
Correct driver's seat position ........... 92
Folding the backrest (rear com-
partment) forwards/back (vehi-
cles with the EASY-VARIO-PLUS
system) .......................................... 253
Folding the backrest (rear com-
partment) forwards/back (vehi-
cles without the EASY-VARIO-
PLUS system) ................................ 252
Important safety notes .................... 93
Seat heating problem ..................... .97
Storing settings (memory func-
tion) ............................................... 101
Switching seat heating on/of f......... 96
Securing cargo .................................. 255
Selector lever
Cleaning ......................................... 280
Sensors (cleaning instructions) ....... 279
Service menu (on-board com- puter) .................................................. 204
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 338
Coolant (engine) ............................ 339
Engine oil ....................................... 337
Fuel ................................................ 335
Important safety notes .................. 335
Refrigerant (air-conditioning sys-
tem) ............................................... 340
Washer fluid ................................... 339
Setting the air distribution ............... 127
Setting the airflow ............................ 127
Settings
Factory (on-board computer) ......... 206
On-board computer ....................... 204
Side impact air bag ............................. 46
Side marker lamp (display mes-
sage) ................................................... 221 Side windows
Cleaning ......................................... 278
Convenience closing feature ............ 83
Convenience opening feature .......... 82
Important safety information ........... 81
Opening/closing .............................. 82
Problem (malfunction) ..................... 85
Resetting ......................................... 84
Reversing feature ............................. 81
Sliding sunroof
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery ....................... 74
Changing the programming ............. 72
Checking the battery ....................... 73
Convenience closing feature ............ 83
Convenience opening feature .......... 82
Display message ............................ 234
Door central locking/unlocking ....... 70
Important safety notes .................... 70
KEYLESS-GO start function .............. 72
Loss ................................................. 75
Mechanical key ................................ 72
Positions (ignition lock) ................. 135
Problem (malfunction) ..................... 75
Starting the engine ........................ 137
SmartKey positions (ignition lock) .. 135
Snow chains ...................................... 305
Sockets
Center console .............................. 263
General notes ................................ 262
Luggage compartment ................... 263
Rear compartment ......................... 263
Special seat belt retractor .................. 55
Specialist workshop ............................ 24
Speed, controlling
see Cruise control
Speedometer
Activating/deactivating the addi-
tional speedometer ........................ 204
Digital ............................................ 197
In the Instrument cluster ................. 29
Segments ...................................... 193
Selecting the unit of measure-
ment .............................................. 204
Standing lamps
Display message ............................ 221
Index15

Cockpit
FunctionPage
:Steering wheel paddle
shifters
147
;Combination switch106
=Instrument cluster29
?Horn
ADIRECT SELECT lever142
BPARKTRONIC warning dis- play
172
COverhead control panel35
FunctionPage
DClimate control systems120
EIgnition lock135
FAdjusts the steering wheel97
GCruise control lever161
HElectric parking brake153
ILight switch104
JDiagnostics connection23
KOpens the hood270
28Cockpit
At a glance

Useful information
iThis Operator's Manual describes all
models and all standard and optional equip- ment 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.
iRead the information on qualified special-
ist workshops ( Ypage 24).
Panic alarm
X
To activate: press and hold the
! button :for approx. one second.
A visual and audible alarm is triggered if the alarm system is armed.
X To deactivate: press!button :
again.
or
X Insert the SmartKey into the ignition lock.
or, in vehicles with KEYLESS-GO start-func-
tion or KEYLESS

However, it does not protect the chest or
arms.
In the event of a side impact, the window cur-
tain air bag 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 window curtain air bag may be
deployed in other accident situations( Y page 52).
Occupant Classification System
(OCS)
Introduction
The Occupant Classification System (OCS)
categorizes the person in the front-passenger
seat. Depending on that result, the front-
passenger front air bag is either enabled or
deactivated.
The system does not deactivate: R the side impact air bag
R the window curtain air bag
R the Emergency Tensioning Devices
Prerequisites
To be classified correctly, the front passenger
must sit:
R 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, OCS may produce a false classi-
fication, e.g. because the front passenger:
R transfers their weight by supporting them-
selves on a vehicle armrest
R sits in such a way that their weight is raised
from the seat cushion
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. cushions. 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 lie as flat as possible against the
backrest of the front-passenger seat.
The child restraint system must not touch the
roof or be subjected to a load by the head
restraint. Adjust the angle of the seat back-
rest and the head restraint position accord-
ingly.
Only then can OCS be guaranteed to function correctly. Always observe the child restraint
system manufacturer's installation instruc-tions.
Operation of Occupant Classification
System (OCS)
:PASSENGER AIR BAG OFF indicator lamp
;PASSENGER AIR BAG ON indicator lamp
The indicator lamps inform you whether the
front-passenger front air bag is deactivated or
enabled.
X Press the Start/Stop button once or twice,
or turn the key to position 1or 2in the
ignition lock.
The system carries out self-diagnostics.
The PASSENGER AIR BAG OFF and
PASSENGER AIR BAG ON indicator lamps
must light up simultaneously for approx-
imately six second s.
Occupant safety47
Safety
Z

Deployment of Emergency TensioningDevices and air bags
Important safety notes
GWARNING
The air bag parts are hot after an air bag has
been deployed. There is a risk of injury.
Do not touch the air bag parts. Have a
deployed air bag replaced at a qualified spe-
cialist workshop as soon as possible.
GWARNING
A deployed air bag no longer offers any pro-
tection and cannot provide the intended pro-
tection in an accident. There is an increased
risk of injury.
Have the vehicle towed to a qualified special- ist workshop in order to have a deployed air
bag replaced.
It is important for your safety and that of your
passenger to have deployed air bags replaced and to have any malfunctioning air bags
repaired. This will help to make sure the air
bags continue to perform their protective
function for the vehicle occupants in the
event of a crash.
GWARNING
Pyrotechnic Emergency Tensioning Devices
that have been deployed are no longer opera-tional and are unable to perform their inten-
ded protective function. This poses an
increased risk of injury or even fatal injury.
Therefore, have pyrotechnic Emergency Ten-
sioning Devices which have been triggered
immediately replaced at a qualified specialist workshop.
If Emergency Tensioning Devices are trig-
gered or air bags are deployed, you will hear a
bang, and a small amount of powder may also be released. The 6restraint system warn-
ing lamp lights up.
Only in rare cases will the bang affect your
hearing. The powder that is released gener-
ally does not constitute a health hazard, but it may cause short-term breathing difficulties in
people with asthma or other respiratory prob-
lems. To avoid this, you may wish to get out of
the vehicle or open the windows as soon as it is safe to do so.
Air bags and pyrotechnic Emergency Tension-
ing Devices (ETDs) contain perchlorate mate- rial, which may require special handling and
regard for the environment. National guide-
lines must be observed during disposal. In
California, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/
index.cfm .
Method of operation
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:
R duration
R direction
R intensity
Based on the evaluation of this data, the
restraint system control unit triggers the
Emergency Tensioning Devices during a fron- tal or rear collision.
An Emergency Tensioning Device can only be
triggered, if: R the ignition is switched on
R the components of the restraint system are
operational; see "Restraint system warning
lamp" ( Ypage 39)
R the belt tongue is engaged in the buckle on
the respective front-passenger seat
The Emergency Tensioning Devices in the
rear compartment are triggered independ-
ently of the lock status of the seat belts.
If the restraint system control unit detects a
more severe accident, further components of the restraint system are activated independ-
ently of each other in certain frontal collision
situations:
52Occupant safety
Safety

chains. Only in this way will the driving safety
systems described in this section work as
effectively as possible.
ABS (Anti-lock Braking System)
General information
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.
Important safety notes
iObserve the "Important safety notes" sec-
tion ( Ypage 60).
GWARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally, further driving safety systems are deac-
tivated. There is an increased danger of skid-
ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
When ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information on the ABS warning lamp ( Ypage 238) and
display messages which may be shown in the
instrument cluster ( Ypage 208).
ABS works from a speed of about 5 mph
(8 km/h), regardless of road-surface condi-
tions. ABS works on slippery surfaces, even
when you only brake gently.
Braking
X If ABS intervenes: continue to depress the
brake pedal vigorously until the braking sit-
uation is over.
X To make a full brake application:
depress the brake pedal with full force.
If ABS intervenes when braking, you will feel a
pulsing in the brake pedal.
The pulsating brake pedal can be an indica-
tion of hazardous road conditions, and func-
tions as a reminder to take extra care while
driving.
BAS (Brake Assist System)
General information
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
iObserve the "Important safety notes" sec-
tion ( Ypage 60).
GWARNING
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased. There is a risk of an accident.
In an emergency braking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking.
Braking
X
Keep the brake pedal firmly depressed 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.
Driving safety systems61
Safety
Z

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.
Important safety notes
iObserve the "Important safety notes" sec-
tion ( Ypage 60).
No steering assistance is provided from
STEER CONTROL, if: R ESP ®
is malfunctioning.
R the lighting is faulty.
If ESP ®
is malfunctioning, you will be assisted
further by the electrical power steering.
Protection against theft
Immobilizer
The immobilizer prevents your vehicle from
being started without the correct SmartKey.
X To activate with the SmartKey: remove
the SmartKey from the ignition lock.
X To activate with KEYLESS-GO start-
function or KEYLESS-GO: switch the igni-
tion off and open the driver's door.
X To deactivate: switch on the ignition.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Any-
one can start the engine if a valid SmartKey
has been left inside the vehicle.
iThe immobilizer is always deactivated
when you start the engine.
In the event that the engine cannot be star-
ted (yet the vehicle's battery is charged),
the system is not operational. Contact an
authorized Mercedes-Benz Center or call
1-800-FOR-MERCedes (in the USA) or
1-800-387-0100 (in Canada).
ATA (anti-theft alarm system)
X To arm: lock the vehicle with the SmartKey
or KEYLESS-GO.
Indicator lamp :flashes. The alarm sys-
tem is armed after approximately
15 seconds.
X To disarm: unlock the vehicle with the
SmartKey or KEYLESS-GO.
or X Insert the SmartKey into the ignition lock.
A visual 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
X To turn the alarm off with the SmartKey:
press the %or& button on the
SmartKey.
The alarm is switched off.
or
X Vehicles with KEYLESS-GO start-func-
tion or KEYLESS-GO: remove the Start/
Stop button from the ignition lock ( Y page 135).
X Insert the SmartKey into the ignition lock.
The alarm is switched off.
Protection against theft67
Safety
Z

Useful information
iThis Operator's Manual describes all
models and all standard and optional equip- ment 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.
iRead the information on qualified special-
ist workshops ( Ypage 24).
SmartKey
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shifting the automatic transmission out of
park position P
R Start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
GWARNING
If you attach heavy or large objects to the
SmartKey, the SmartKey could be uninten-
tionally turned in the ignition lock. This could
cause the engine to be switched off. There is a risk of an accident.
Do not attach any heavy or large objects to the SmartKey. Remove any bulky key rings before
inserting the SmartKey into the ignition lock.
!Keep the SmartKey away from strong
magnetic fields. Otherwise, the remote
control function could be affected.
Strong magnetic fields can occur in the
vicinity of powerful electrical installations.
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 metalfoil.
R inside metallic objects, e.g. a metal case.
Vehicles with KEYLESS-GO start function: do not keep the SmartKey in the cargo com-
partment. Otherwise, the SmartKey may not
be detected, e.g. when starting the engine
using the Start/Stop button.
SmartKey functions
:& To lock the vehicle
;%To unlock the vehicle
If you do not open the vehicle within approx-
imately 40 seconds of unlocking, the vehicle
will lock again.
If you do not open the vehicle within approx-
imately 40 seconds of unlocking:
R the vehicle is locked again.
R protection against theft is reactivated.
X To lock centrally: press button:.
70SmartKey
Opening and closing

Deactivating and activating
If you do not intend to use the vehicle for a
longer period of time, you can deactivate KEY-
LESS-GO. The SmartKey will then use very lit- tle power, thereby conserving battery power.
For the purposes of activation/deactivation,
the vehicle must not be nearby. X To deactivate: press the&button on
the SmartKey twice in rapid succession.
The battery check lamp of the SmartKey( Y page 73) lights up twice briefly and
KEYLESS-GO is deactivated.
X To activate: press any button on the
SmartKey or insert the SmartKey into the
ignition lock.
KEYLESS-GO and all of its associated fea-
tures are available again.
KEYLESS-GO start function
Bear in mind that the engine can be started by any of the vehicle occupants if there is a
SmartKey in the vehicle.
Changing the settings of the locking
system
You can change the settings of the locking
system. This means that only the driver's doorand the fuel filler flap are unlocked when the
vehicle is unlocked. This is useful if you fre-
quently travel on your own.
X To change the setting: simultaneously
press the %and& buttons for
approximately 6 seconds until the battery
check lamp ( Ypage 73) flashes twice.
iIf the setting of the locking system is
changed within the signal range of the vehi- cle, 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%but-
ton twice.
X To lock centrally: press the&button.
The KEYLESS-GO function is changed as fol-
lows:
X To unlock the driver's door: touch the
inner surface of the door handle on the
driver's door.
X To unlock centrally: touch the inner sur-
face of the door handle on the front-
passenger door or the rear door.
X To lock centrally: touch the outer sensor
surface on one of the door handles.
X To restore the factory settings: simulta-
neously press the %and& buttons
for approximately 6 seconds until the bat-
tery check lamp flashes twice( Y page 73).
Mechanical key
General notes
If the vehicle can no longer be locked or
unlocked with the SmartKey or KEYLESS-GO, use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door or the trunk lid, the
anti-theft alarm system will be triggered( Y page 67).
There are several ways to turn off the alarm:
X To turn the alarm off with the SmartKey:
press the %or& button on the
SmartKey.
or X Insert the SmartKey into the ignition lock.
or
X To deactivate the alarm with KEYLESS- GO: press the Start/Stop button in the igni-
72SmartKey
Opening and closing