2011 MERCEDES-BENZ B-CLASS HATCHBACK air condition

1, 2, 3 ...
12 Vsocket
see Socket A
ABS (Anti-lock Braking System) Display message ............................ 206
Function/notes ................................ 63
Important safety notes ....................63
Warning lamp ................................. 233
Activating/deactivating air-recir-
culation mode .................................... 121
Activating/deactivating cooling
with air dehumidification .................117
Active light function .........................100
Active Park Assist Display message ............................ 224
Active Parking Assist
Function/notes ............................. 166
Important safety notes ..................166
Towing atrailer .............................. 169
ADAPTIVE BRAKE ................................. 68
Adaptive brake lamps .........................66
Adaptive Highbeam Assist Display message ............................ 219
Function/notes ............................. 101
Adaptive Main-beam Assist
Switching on/off (on-board com-
puter) ............................................. 202
Additional speedometer ...................200
Additives (engine oil) ........................315
Adjusting the headlamp range ...........98
Airbags Front airbag (driver, front
passenger )....................................... 41
Important safety guidelines .............40
Kneebag .......................................... .42
Sidebag ............................................ 42
Triggering ......................................... 39
Windowba g...................................... 43
Air-conditioning system
see Climate control
Airf ilter (white display message) ....221
Air pressure see Tyre pressure Airv
ents
Important safet ynotes .................. 122
Rea r............................................... 123
Setting ........................................... 122
Setting the centre air vents ...........123
Setting the side air vents ...............123
Alarm system
see ATA (Anti-Theft Alarm system)
Anti-glare film .................................... 260
Anti-loc kBraking System
see ABS (Anti-lock Braking System)
Anti-Theft Alarm system
see ATA (Anti-Theft Alarm system)
Aquaplaning ....................................... 148
Ashtray ............................................... 256
Assistance menu (on-board com-
puter) ................................................. .198
ASSYST PLUS see ASSYST PLUS service interval
display
ASSYST PLUS service interval dis-
play
Displaying service messages .........266
Hiding service messages ...............266
Notes ............................................. 266
Service messages ..........................266
ATA (Anti-Theft Alarm system)
Activating/deactivating ...................68
Function .......................................... .68
Interior motion sensor .....................69
Switching off the alarm ....................68
Tow-away protection ........................ 69
ATTENTIO NASSIST
Activating/deactivating .................199
Display message ............................ 221
Function/notes ............................. 175
Audio menu (on-board computer) ....195
Authorised workshop see Qualified specialist workshop
AUTO lights
Display message ............................ 218
see Lights
Automatic engine start (ECO start/
stop function) .................................... 130
Automatic engine switch-off (ECO
start/stop function) ..........................129
Automatic headlamp mode ................97 4
Index

Notes on using THERMOTRONIC
automatic climate control
..............116
Overview of systems ......................114
Problems with cooling with air
dehumidification ............................ 118
Problem with the rear window
heating .......................................... 121
Setting the aird istribution.............118
Setting the airflow .........................119
Setting the airv ents...................... 122
Setting the temperature ................118
Switching air-recirculation mode
on/off ............................................ 121
Switching on/off ........................... 117
Switching residual hea ton/off ......122
Switching the rear window heat-
ing on/off ...................................... 120
Switching the ZONE function on/
off .................................................. 119
THERMATIC automatic climate
control ........................................... 115
THERMOTRONIC (2-zone) auto-
matic climate control .....................116
Cockpit
Overview .......................................... 26
see Instrument cluster
COLLISIO NPREVENTION ASSIST .......63
COMAND Online see separate operating instructions
Combination switch ............................98
Constant headlamp mode see Daytime driving lights
Consumption statistics (on-board
computer) .......................................... 193
Convenience closing feature ..............81
Convenience opening/closing (air-
recirculation mode) ........................... 121
Convenience opening feature ............81
Coolan t(engine)
Checkin gthe level ......................... 265
Display message ............................ 219
Notes ............................................. 316
Temperature gauge ........................ 188
Warning lamp ................................. 239
Cooling
see Climate control
Cornering lamps
Changing bulbs .............................. 106Cornering light function
Display message ............................ 215
Function/notes ............................. 100
Crash-responsive emergency light-
ing ....................................................... 103
Cruise control Activation conditions .....................150
Cruise control leve r....................... 149
Deactivating ................................... 151
Display message ............................ 227
Driving system ............................... 149
Important safety notes ..................149
LIM indicator lamp .........................149
Selecting ........................................ 150
Setting aspeed .............................. 151
Storing and maintaining current
speed ............................................. 150
Cup holder
Centr econsole .............................. 255
Important safety notes ..................255
Rea rcompartmen t......................... 256 D
Dashboard see Cockpit
Data
see Technical data
Daytime driving lights
Display message ............................ 218
Switching on/off (on-board com-
puter) ............................................. 201
Switching on/off (switch) ................97
Dealership
see Qualified specialist workshop
Delaye dswitch-off
Exterio rlighting (on-board com-
puter )............................................. 202
Interior lighting .............................. 202
Diagnostics connection ......................22
Diesel ................................................. .313
Diesel particle filter ..........................146
Digital speedometer .........................193
Dipped-beam headlamps Changing bulbs .............................. 105
Display message ............................ 215
Setting for driving abroad (sym-
metrical) .......................................... 96 Index
7

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

In such cases, the distance warning signal
may:
R
give an unnecessary warning
R not give a warning
There is a risk of an accident. Always pay par-
ticula rattention to the traffi csituation and be
ready to brake, especially if the distance
warning signal alerts you. G
WARNING
The distance warning signal does not react:
R to people or animals
R to oncoming vehicles
R to crossing traffic
R when cornering
Thus, the distance warning signal cannot pro-
vide a warning in all critical situations .There
is a risk of an accident. Always pay careful
attention to the traffic situation and be ready
to brake.
X To activate/deactivate: activate or deac-
tivate the distance warning signal in the on-
board computer (Y page 199).
When the distance warning signal is activa-
ted, the multifunction display shows the
Ä symbol as long as the HOLD function is
not activated (Y page 162). On vehicles with
Active Parking Assist, the Äsymbol is dis-
played when position Pis engaged or you are
driving faster than 35 km/h.
The distance warning signal can help you to
minimise the risk of a front-end collision with
a vehicle ahead or reduce the effects of such
a collision. If the distance warning signal
detects that there is a risk of a collision, you
will be warned visually and acoustically .The
distance warning signal cannot prevent a col-
lision without your intervention.
The distance warning signal will issue a warn-
ing at speeds of around 30 km/h or more if:
R the distance to the vehicle in front is too
short for the speed you are driving at for
several seconds. The ·distance warn- ing lamp then lights up in the instrument
cluster.
R you are rapidly approaching the vehicle in
front. An intermittent warning tone will
then sound and the ·distance warning
lamp will light up in the instrumentc luster.
X Brake immediately in order to increase the
distance from the vehicle in front.
or
X Take evasive action provided it is safe to do
so.
For the distance warnin gsignal to assist you
when driving, the function must be activated
in the on-board computer (Y page 199) and
be operational.
Due to the nature of the system, particularly
complicated driving conditions may cause the
system to display an unnecessary warning.
With the help of the radar sensor system, the
distance warning signal can detect obstacles
that are in the path of your vehicle for an
extended period of time.
At speeds up to approximately 70 km/h, the
distance warning signal may also detect sta-
tionary obstacles, for example, stopped or
parked vehicles.
If you approach an obstacle and the distance
warning signal detects a risk of a collision, the
system will initially alert you both visually and
acoustically.
In particular, the detection of obstacles can
be impaired if there is:
R dirt on the sensors or anything else cover-
ing the sensors
R snow or heavy rain
R interference by other radar sources
R the possibility of strong radar reflections,
for example, in multi-storey car parks
R a narrow vehicle travelling in front, e.g. a
motorbike
R a vehicle travelling in front on a different
line
Following damage to the front end of the vehi-
cle, have the configuration and operation of 64
Driving safety systemsSafety

the rada
rsensor checked at a qualified spe-
cialist workshop. This also applies to colli-
sions at slow speeds where there is no visible
damage to the fron tofthe vehicle.
i Observe the "Important safety notes" sec-
tion (Y page 62).
BAS PLUS (Brake Assist System Plus) G
WARNING
BAS PLUS cannot always clearly identify
objects and complex traffic situations. BAS
PLUS cannot intervene in these cases.
There is a risk of an accident. Always pay
careful attention to the traffic situation and be
ready to brake. G
WARNING
BAS PLUS does not react:
R to people or animals
R to oncoming vehicles
R to crossing traffic
R to stationary obstacles
R when cornering
As a result, BAS PLUS may not intervene in
critical situations. There is a risk of an acci-
dent. Always pay careful attention to the traf-
fic situation and be ready to brake.
BAS PLUS assists you in braking during haz-
ardous situations at speeds above 30 km/h
and uses the radar sensor system to evaluate
the traffic situation.
With the help of the radar sensor system, BAS
PLUS can detect obstacles that are in the
path of your vehicle for an extended period of
time.
Should you approach an obstacle and BAS
PLUS has detected a risk of collision, BAS
PLUS calculates the braking force necessary
to avoid a rear-end collision. Should you apply
the brakes forcefully, BAS PLUS will automat-
ically increase the braking force to a level
suitable for the traffic conditions. X
Keep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will work normally again if:
R you release the brake pedal.
R there is no longer any danger of a rear-end
collision.
R no obstacle is detected in front of your
vehicle.
BAS PLUS is then deactivated.
Vehicles with PRE-SAFE ®
:if BAS PLUS
requires particularly high brake pressure, pre-
ventative passenger protection measures
(PRE-SAFE ®
) are deployed simultaneously.
Up to vehicle speeds of around 250 km/h,
BAS PLUS is capable of reacting to moving
objects that have already been recognised as
such at least once over the period of obser-
vation. BAS PLUS does not react to stationary
obstacles.
If BAS PLUS is not available due to a malfunc-
tion in the radar sensor system, the brake
system remains available with full brake
boosting effect and BAS.
In particular, the detection of obstacles can
be impaired if there is:
R dirt on the sensors or anything else cover-
ing the sensors
R snow or heavy rain
R interference by other radar sources
R the possibility of strong radar reflections,
for example, in multi-storey car parks
R a narrow vehicle travelling in front, e.g. a
motorbike
R a vehicle travelling in front on a different
line
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.
i Observe the "Important safety notes" sec-
tion (Y page 62). Driving safety systems
65Safety Z

Useful information
i This Owner's Manual describes all models
and all standard and optional equipment
available to your vehicle at the time of pub-
lication of the Owner's Manual. Country-
specific deviations are possible. Please
note that your vehicle may not be equipped
with all features described. This also
applies to safety-relevan tsystems and
functions.
i Please read the information on qualified
specialist workshops (Y page 22).Correct driver's sea
tposition Observe the safety guidelines on seat adjust-
ment (Y
page 87).
X Chec kwhether you have adjusted seat =
properly.
Manual seat adjustment (Y page 88)
Electrical seat adjustment (Y page 88)
When adjusting the seat, make sure that:
R you are as far away from the driver's air-
bag as possible.
R you are sitting in a normal upright posi-
tion.
R you can fasten the seat belt properly. R
you have moved the backrest to an
almost vertical position.
R you have set the seat angle so that your
thighs are gently supported.
R you can depress the pedals properly.
X Check whether the head restraint is adjus-
ted properly (Y page 88).
When doing so, make sure that you have
adjusted the head restraint so that the back
of your head is supported at eye level by
the centre of the head restraint.
Observe the safety guidelines on steering
wheel adjustment (Y page 91).
X Check whether steering wheel :is adjus-
ted properly.
Adjusting the steering wheel
(Y page 91)
When adjusting the steering wheel, make
sure that:
R you can hold the steering wheel with your
arms slightly bent.
R you can move your legs freely.
R you can see all the displays in the instru-
ment cluster clearly.
Observe the safety guidelines for seat belts
(Y page 44).
X Check whether you have fastened seat
belt ;properly (Y page 45).
The seat belt should:
R fit snugly across your body
R be routed across the middle of your
shoulder
R be routed in your pelvic area across the
hip joints
X Before starting off, adjust the rear-view mir-
ror and the exterior mirrors (Y page 91)
in such a way that you have a good view of
road and traffic conditions.
X Vehicles with a memory function: save
the seat and exterior mirror settings
(Y page 94). 86
Correct driver's seat positionSeats, steering wheel and mirrors

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