2011 MERCEDES-BENZ B-CLASS HATCHBACK climate control

Function Page
:
Overhead control panel 34
;
PARKTRONIC warning dis-
play
163
=
Combination switch 98
?
Instrument cluster 28
A
Horn
B
DIRECT SELECT lever 135
C
Steering wheel gearshift
paddles
138 Function Page
D
Ligh
tswitch 96
E
Electric parking brake 145
F
Opens the bonnet 262
G
Diagnostics connection 22
H
Ignitio
nlock 127
I
Adjusts the steering wheel 91
J
Cruise control lever 149
K
Climate control systems 114Cockpit
27At a glance

Useful information
............................114
Overview of climate control sys-
tems ................................................... 114
Operating the climate control sys-
tem ..................................................... 117
Adjusting the air vents .....................122 113Climate control

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).Overview of climate control systems
Important safety notes
G
WARNING
Observe the settings recommended on the
following pages. The windows could other-
wise mis tup. This may preven tyou from
observing the traffic conditions, thereby caus-
ing an accident.
THERMATIC automatic climate control/
THERMOTRONIC automatic climate control
controls the temperature and the humidity of
the vehicle interior and filters out undesirable
substances from the air.
THERMATIC/THERMOTRONIC automatic cli-
mate control is only operational when the
engine is running 7
.O ptimum operation is only
achieved if you drive with the side windows
and panorama sliding sunroof closed.
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature (Y page 81). This
will speed up the cooling process and the
desired vehicle interior temperature will be
reached more quickly.
i The integrated filter can filter out most
particles of dust and completely filters out pollen.
Aclogged filter reduces the amount
of air supplied to the vehicle interior .For
this reason, you should always observe the
interval for replacing the filter, which is
specified in the Service Booklet .As it
depends on environmental conditions, e.g.
heavy air pollution, the interval may be
shorter than stated in the Service Booklet.
7 THERMOTRONIC automatic climate control: the residual heat function can only be activated/deactivated
when the ignition is switched off. 114
Overview of climate control systemsClimate control

Control panel for THERMATIC automatic climate control
:
Sets the temperature (Y page 118)
; Demists the windscreen (Y page 119)
= Sets the air distribution (Y page 118)
? Activates/deactivates air-recirculation mode (Y page 121)
A Sets the airflow (Y page 119)
B Activates/deactivates coolin gwith air dehumidification ( Ypage 117)
C Switches the rear window heating on/off (Y page 120)Notes on using THERMATIC automatic
climate control
The following contains notes and recommen-
dations on optimum use of THERMATIC auto-
matic climate control.
R Switch on the air-conditioning system by
turning control knob Aclockwise to the
desired position (except position 0).
R Set the temperature to 22 †.
R Recommendation for air distribution in
winter: set theOand¯ settings.
Recommendation for air distribution in
summer: set thePsetting.
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 unpleasan toutside odours
or when in a tunnel. The windows could otherwise mis
tup as no fresh air is drawn
into the vehicle in air-recirculation mode. Overview of climate control systems
115Climate control 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

the front-passenge
rside as well. The indi-
cator lamp in the ábutton goes out.
R Use the residual heat function if you want
to heat or ventilate the vehicle interior
when the ignition is switched off .The resid-
ual heat function can only be activated or
deactivated with the ignition switched off. Operating the climate control system
Switching climate control on/off
Switching on/off THERMATIC automatic climate control
X Turn the key to position 2in the ignition
lock.
X To switch on: turn controlAclockwise
to the desired position (except position 0)
(Y page 115).
X To switch off: turn controlAanti-clock-
wise to position 0(Y page 115).
THERMOTRONIC automatic climate con-
trol
X Turn the key to position 2in the ignition
lock.
X To activate: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Airflow and air distribution are set to
automatic mode.
or
X Press the ^button.
The indicator lamp in the ^button goes
out. The previously selected settings come
into effect again.
X To switch off: press the^button.
The indicator lamp in the ^button lights
up.
i If climate control is switched off, the air
supply and air circulation are also switched
off. Only use this setting for a brief period.
The windows could otherwise mist up. i
THERMOTRONIC automatic climate con-
trol: switch on climate control primarily
using the Ãbutton. Activating/deactivating the cooling
with air dehumidification function
Important information G
WARNING
If the "cooling with air dehumidification" func-
tion is deactivated, the air inside the vehicle
will not be cooled (during warm weather) or
dehumidified. The windows could mist up
more quickly. This may prevent you from
observing the traffic conditions, thereby caus-
ing an accident.
The cooling with air dehumidification function
is only available when the engine is running.
The air inside the vehicle is cooled and dehu-
midified according to the temperature selec-
ted.
Condensation may drip from the underside of
the vehicle when cooling mode is active. This
is normal and not a sign that there is a mal-
function.
i The refrigerant that is used by the cooling
with air dehumidification does not contain
chlorofluorocarbons, and therefore does
not damage the ozone layer. You can obtain
more detailed information on refrigerants
from any qualified specialist workshop.
Switching on/off X
To activate: press the¿button.
The indicator lamp in the ¿button lights
up.
X To switch off: press the¿button.
The indicator lamp in the ¿button goes
out. The cooling with air dehumidification
function has a delayed switch-off feature. Operating the climate control system
117Climate control Z

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