2011 MERCEDES-BENZ B-CLASS HATCHBACK buttons

Sensors (cleaning instructions)
.......270
Service Centre see Qualified specialist workshop
Service menu (on-board computer) .200
Service products Brake fluid ..................................... 315
Coolant (engine) ............................ 316
Engine oil ....................................... 314
Fuel ................................................ 312
Important safety notes ..................311
Washer fluid .................................. .316
Settings
Factory (on-board computer) .........204
On-board computer .......................200
Setting the air distribution ...............118
Setting the airflow ............................119
Shifting to neutral (manual trans-
mission) ............................................. 134
Short journeys (diesel particle fil-
ter) ...................................................... 146
Sidebag ................................................ 42
Side windows Convenience closing ........................81
Convenience opening ......................81
Important safety notes ....................79
Opening/closing .............................. 80
Problem (malfunction) .....................82
resetting .......................................... 81
Sliding sunroof
see Panorama sliding sunroof
Snow chains ...................................... 295
Socket Centre console .............................. 258
Luggage compartment ...................258
Points to observe before use .........257
Rea rcompartmen t......................... 258
Spare wheel
see Emergency spare wheel
Specialist workshop ............................ 22
Spectacles compartment .................245
Speed, controlling see Cruise control
Spee dLimit Assist
Activating/deactivating the warn-
ing function .................................... 198
Displayin g...................................... 198
Display message ............................ 222Display message in the multifunc-
tion displa
y.................................... 177
Function/notes ............................. 176
Important safety notes ..................176
Spee dlimiter
SPEEDTRONIC ............................... 151
Speedometer
Activating/deactivating the addi-
tional speedometer ........................200
Digita l............................................ 193
In the Instrument cluster .................28
Segments ...................................... 189
Selecting the unit of measure-
ment .............................................. 200
see Instrument cluster
SPEEDTRONIC
Deactivating variabl e..................... 153
Display message ............................ 226
Function/notes ............................. 151
Important safety notes ..................152
LIM indicator lamp .........................152
Permanent ..................................... 154
Selecting ........................................ 152
Storing the current spee d.............. 153
Variabl e......................................... 152
SRS (Supplemental Restraint Sys-
tem)
Display message ............................ 214
Introduction ..................................... 39
Warning lamp ................................. 238
Warning lamp (function) ................... 39
Starting (engine) ................................ 127
STEE RCONTROL .................................. 68
Steering (display message) ..............230
Steering wheel Adjusting (manually). .......................91
Button overview ............................... 31
Buttons (on-board computer) ......... 189
Cleaning ......................................... 272
Gearshift paddles ........................... 138
Important safety notes ....................91
Steering wheel gearshift paddles ....138
Stowage areas ................................... 244
Stowage compartment Spectacles compartment ...............245
Stowage compartments
Armrest (front) ............................... 245
Armrest (under) ............................. 24616
Index

Changing the settings of the locking
system
X To change the setting: press and hold
down the %and& buttons simulta-
neously for approximately six seconds until
the battery check lamp flashes twice
(Y page 74).
i If the setting of the locking system is
changed within the signal range of the vehi-
cle, pressing the &or% buttonlocks
or unlocks the vehicle.
The key 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.
You can change the setting of the locking
system in such a way that only the driver's
door and the fuel filler flap are unlocked. This
is useful if you frequently travel on your own. Restoring factory settings
X Press the %and& buttons simulta-
neously for approximately six seconds until
the battery check lamp flashes twice. Emergency key element
General notes If the vehicle can no longer be unlocked with
the key, use the emergency key element.
If you use the emergenc ykey element to
unlock and open the driver's door, the anti-
thef talarm system will be triggered
(Y page 68).
There are several ways to tur noff the alarm:
X Press the %or& button on the key.
or
X Insert the key into the ignition lock. If you unlock the vehicle using the emergency
key element, the fuel filler flap will not be
unlocked automatically.
X
To unlock the fuel filler flap: insert the
key into the ignition lock.
Removing the emergency key element X
Push release catch :in the direction of
the arrow and at the same time, remove
emergency key element ;from the key. Battery of the key
Important safety notes G
WARNING
Batteries are toxic and contain caustic sub-
stances. For this reason, keep batteries out of
the reach of children.
If a battery has been swallowed, visi tadoctor
immediately. H
Environmental note Batteries contain pollutants.
It is illegal to dispose of them
with the household rubbish.
They must be collected sep-
arately and disposed of in an
environmentally responsible
recycling system.
Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to a qualified spe- Key
73Opening and closing
Z

cialist workshop or to a col-
lection point for used batter-
ies.
Have the batteries changed at a qualified spe-
cialist workshop.
Checking the battery X
Press the &or% button.
The battery is working properly if battery
check lamp :lights up briefly.
The battery is discharged if battery check
lamp :does not light up briefly.
X Change the battery (Y page 74).
i If the key battery is checked within the
signal receptio nrange of the vehicle, press-
ing the &or% button:
R locks or
R unlocks the vehicle
i You can get a battery in any qualified spe-
cialist workshop.
Replacing the battery You require a CR 2025 3 V cell battery.
X
Take the emergency key elemen tout of the
key (Y page 73). X
Press emergency key element ;into the
opening in the key in the direction of the
arrow until battery tray cover :opens.
When doing so, do no thold cover :shut.
X Remove battery tray cover :. X
Repeatedly tap the key against your palm
until battery =falls out.
X Insert the new battery with the positive ter-
minal facing upwards. Use a lint-free cloth
to do so.
X Make sure that the surface of the battery is
free from lint, grease and all other forms of
contamination.
X Insert the front tabs of battery tray
cover :and then press to close it.
X Insert the emergency key element into the
key.
X Check the function of all key buttons on the
vehicle. 74
KeyOpening and closing

Centrally locking and unlocking the
vehicle from the inside
X
To unlock: press button :.
X To lock: press button ;.
If all the doors and th etailgate are closed,
the vehicle locks.
You can centrally lock or unlock the vehicle
from the inside. This can be useful if you wish
to loc kthe vehicle before pulling away, for
example.
The fuel filler flap is not locked or unlocked
when you press the central locking button or
the central unlocking button.
i You cannot unlock the vehicle centrally
from the inside if the vehicle has been
locked with the key.
i You can lock the vehicle centrally if the
front-passenger door is closed. Automatic locking feature
X
To deactivate: press and hold button :
for about five seconds until a tone sounds.
X To activate: press and hold button ;for
about five seconds until a tone sounds.
The vehicle is locked automatically when the
ignition is switched on and the wheels are
turning. You could therefore lock yourself out.
You could therefore be locked out when:
R the vehicle is being pushed.
R the vehicle is being towed.
R the vehicle is being tested on a dynamom-
eter.
i If you press one of the two buttons and
do not hear a tone, the relevant setting has
already been selected.
You can also switch the automatic locking
function on and off using the on-board com-
puter (Y page 203). Unlocking the driver's door (emer-
gency key element)
If the vehicle can no longer be unlocked with
the key, use the emergency key element.
If you use the emergency key element to
unlock and open the driver's door, the anti-
theft alarm system will be triggered
(Y page 68).
X Take the emergency key element out of the
key (Y page 73).
X Insert the emergency key element into the
lock of the driver's door as far as it will go. Doors
77Opening and closing Z

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

Control panel for THERMOTRONIC automatic climate control (2-zone)
:
Sets the temperature, left (Y page 118)
; Sets climate control to automatic (Y page 118)
= Demists the windscreen (Y page 119)
? Increases the airflow (Y page 119)
A Sets the air distribution (Y page 118)
B Display
C Activates/deactivates air-recirculation mode (Y page 121)
D Switches climate control on/off (Y page 117)
E Sets the temperature, righ t(Ypage 118)
F Activates/deactivates the residual heat function (Y page 122)
G Activates/deactivates coolin gwith air dehumidification ( Ypage 117)
H Reduces the airflow ( Ypage 119)
I Switches the rear window heating on/off (Y page 120)
J Switches the ZONE function on/off (Y page 119)Notes on using THERMOTRONIC auto-
matic climate control
The following contains instructions and rec-
ommendations to enable you to get the most
out of your THERMOTRONIC automatic cli-
mate control.
R Activate climate control using the Ãand
¿ buttons .The indicator lamps in the
à and¿ buttons light up.
R Set the temperature to 22 †. R
Only use the demisting function briefly,
until the windscreen is clear again.
R Only use the air-recirculation mode briefly,
e.g. if there are unpleasant outside odours
or when in a tunnel. The windows could
otherwise mist up as no fresh air is drawn
into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the tem-
perature settings on the driver's side for 116
Overview of climate control systemsClimate control

Problems with the cooling with air
dehumidification function
When you press the
¿button, the indica-
tor lamp in the button flashes three times or
remains off. You can no longer switch on the
cooling with air dehumidification function.
X Consult a qualified specialist workshop. Setting climate control to automatic
mode
Only THERMOTRONIC automatic climate con-
trol features the "control climate control
automatically" function.
In automatic mode, the set temperature is
maintained automatically at a constant level.
The system automatically regulates the tem-
perature of the dispensed air, the airflow and
the air distribution.
Automatic mode will achieve optimal opera-
tion if cooling with air dehumidification is also
activated. If desired, cooling with air dehu-
midification can be deactivated.
X Turn the key to position 2in the ignition
lock.
X Set the desired temperature.
X To activate: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Automatic air distribution and airflow
are activated.
X To switch off: press the_button.
or
X Press the KorI button.
The indicator lamp in the Ãbutton goes
out. Automatic air distribution and airflow
are deactivated. Setting the temperature
THERMATIC automatic climate control You can set the temperature for the entire
vehicle.
X
Turn the key to position 2in the ignition
lock.
X To increase/reduce: turn control:
clockwise or anti-clockwise (Y page 115).
Only change the temperature setting in
small increments. Start at 22 †.
THERMOTRONIC automatic climate
control Different temperatures can be set for the
driver's and front-passenger sides.
X Turn the key to position 2in the ignition
lock.
X To increase/reduce: turn controls:or
E clockwise or anti-clockwise
(Y page 116).
Only change the temperature setting in
small increments. Start at 22 †. Setting the air distribution
Air distribution settings THERMATIC automatic climate control
¯
Directs the airflow through the demis-
ter vents
P Directs the airflow through the centre
and side air vents.
O Directs the airflow through the foot-
well air vents
i You can also activate several of the air
distribution settings simultaneously .In
order to do this, press several of the air
distribution buttons. The air is then routed
through different air vents. 118
Operating the climate control systemClimate control

THERMOTRONIC automatic climate con-
trol
¯
Directs the airflow throug hthe demis-
ter vents
P Directs the airflow through the centre
and side air vents.
O Directs the airflow through the foot-
well air vents
S Directs airflow through the centre and
side air vents as well as the footwell air
vents8
.
b Directs the airflow through the centre
and side air vents as well as the demis-
ter vents 8
.
a Directs the airflow through the foot-
well and demister vents
i Regardless of the air distribution setting,
airflow is always directed through the side
air vents. The side air vents can only be
closed if the adjusters are turned clockwise
until they engage.
THERMATIC automatic climate control X
Turn the key to position 2in the ignition
lock.
X Press one or more of the P,O,
¯ buttons.
The corresponding indicator lamp comes
on.
THERMOTRONIC automatic climate
control X
Turn the key to position 2in the ignition
lock.
X Press the ÉorË button until the
desired symbol appears in the display. Setting the airflow
THERMATIC automatic climate control X
Turn the key to position 2in the ignition
lock.
X To increase/reduce: turn controlA
clockwise or anti-clockwise (Y page 115).
THERMOTRONIC automatic climate
control X
Turn the key to position 2in the ignition
lock.
X To increase/reduce: press theKor
I button. Switching the ZONE function on/off
This function is only available with the
THERMOTRONIC automatic climate control.
X To switch on: press theábutton.
The indicator lamp in the ábutton lights
up.
The temperature setting for the driver's
side is not adopted for the front-passenger
side.
X To switch off: press theábutton.
The indicator lamp in the ábutton goes
out.
The temperature setting for the driver's
side is adopted for the front-passenger
side. Demisting the windscreen
You can use this function to defrost the wind-
screen or to demist the inside of the wind-
screen and the side windows.
i You should only select the demisting
function until the windscreen is clear again.
8 Only for certain countries. Operating the climate control system
119Climate control Z