cooling MERCEDES-BENZ B-CLASS HATCHBACK 2008 Owners Manual

3A
ABS (Anti-lock Braking System).......... 55
Display messages ...........204, 205, 206
Warning lamp.................................. 224
Acceleration
Technical data. ............................... 280
Accident
Notes. ............................................. 231
Active head restraint ...........................42
Active light function see Active light function
Active Light System
Display message ............................. 216
Active Park Assist
Display messages ........................... 210
Active parking assist......................... 122
Trailer towing. ................................. 126
Active Service System PLUS
see Service interval display
Adaptive brake lamps ..........................56
Airbags Activation.......................................... 37
Control unit....................................... 37
Driver's ............................................. 40
Front. ................................................ 40
Front passenger ................................ 40
Head/thorax airbags. .......................41
PASSENGER AIRBAG OFF warning
lamp .............................................. 223Sidebags.
.......................................... 41
System.............................................. 39
Windowbags. .................................... 42
Air conditioning
Activating/deactivating ..................134
Activating/deactivating air-recir-
culation mode. ................................ 140
Air-conditioning system ..................131
Controlling automatically. ...............135
Convenience opening/closing
(air-recirculation mode). .................140
Cooling with air dehumidification ...135
Demisting the windscreen ..............138
Heatmatic. ...................................... 130
Malfunction indicator lamp. ............222
Misted-up windows. ........................139
Rear window heating ......................139
Setting the air distribution. .............137
Setting the airflow .......................... 138
Setting the air vents .......................136
Setting the temperature .................135
Switching the residual heat func-
tion on/off ...................................... 141
Thermotronic .................................. 133
Air-conditioning system
see Air conditioning
Air pressure
see Tyre pressure
Antifreeze concentration.......... .298, 299 Anti-lock braking system
see ABS
Anti-theft alarm system
see ATA
Anti-theft systems................................ 57
Armrest
Front seat (adjusting)........................ 67
Rear seat (adjusting).. .......................67
Removing/fitting. ........................... 147
Ashtray ................................................ 161
ASSYST PLUS see Service interval display
ASSYST PLUS service indicator ........191
ATA (anti-theft alarm system) .............57
Switching off the alarm. ....................57
Audible warning signal ......................230
Audio DVD Operating (on-board computer). .....103
AUTO lights
Display message ............................. 216
Automatic car wash ...........................193
Automatic engine start Using the ECO Start-Stop function ...90
With ECO start/stop function ...........87
Automatic transmission
Changing gear yoursel f..................... 93
Display message ............................. 209
Driving tips ....................................... 95
Emergency running mode ...............235
Malfunction..................................... 235 Index
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Air conditioning
128 Air conditioning
Overview of air-conditioning systems
The vehicle is equipped with one of the following air-conditioning systems: Heatmatic
16 Air-conditioning system* Thermotronic*
Heatmatic is a heating and ventilation system
without a cooling system. The air conditioning combines a heating and
ventilation system with a cooling system. The Thermotronic automatic air-conditioning
system combines an automatic heating and
ventilation system with a cooling system. You
can control the air conditioning separately for
the driver's and front-passenger sides.
16
Only in certain countries. Cont
rols
* optional
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Air conditioning
129General notes
The air-conditioning system*/
Thermotronic* controls the temperature and
the humidity of the vehicle interior and filters
out undesirable substances from the air.
Heatmatic/the air-conditioning system*/
Thermotronic* is only operational when the
engine is running. Optimum operation is ach-
ieved only when you drive with the side win-
dows and panorama louvred sliding sun-
roof* closed. i
Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature (Y page 84). This
will speed up the cooling process and the
desired vehicle interior temperature will be
reached more quickly.
i The integrated filter filters out most par-
ticles of dust and completely filters out pol-
len. A clogged 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. G
Risk of accident
Observe the settings recommended on the
following pages. Otherwise, the windows
could mist up. This may obstruct your view
of the traffic situation and, as a result, you
may cause an accident. Cont
rols
* optional
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Air conditioning
132 Function
1
Sets the temperature
P
Demists the windscreen 2
Ä
Activates/deactivates air-
recirculation mode 3
Sets the airflow
Switches the air conditioning on/
off
P
Demists the windscreen Function
4
1
Switches the rear window
heating on/off 5
Sets the air distribution
P
Demists the windscreen 6
œ
Switches cooling with air
dehumidification on/off i
Notes and recommendations on optimum
air conditioning:
R Activate the air conditioning by turning
control knob 3clockwise to the desired
position (except position 0).
R Set the temperature to 22 †. R
Only use the "demisting" function until
the windscreen is clear again.
R Only use the "air-recirculation mode"
briefly, e.g. when there are unpleasant
outside odours or when in a tunnel. Oth-
erwise, the windows could mist up due
to a lack of fresh air in air-recirculation
mode. Cont
rols
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Air conditioning
133
Thermotronic*
Function
1
Q
Sets the airflow 2
U
Controls the air conditioning
automatically 3
|
Demists the windscreen 4
$
Increases the temperature,
left Function
5
´
Switches the air conditioning
on/off 6
$
Increases the temperature,
right 7
1
Switches the rear window
heating on/off Function
8
T
Switches the residual heat
function on/off 9
Sets the air distribution
a
œ
Switches cooling with air
dehumidification on/off b
%
Reduces the temperature,
right Cont
rols
* optional
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Air conditioning
135Switching cooling with air dehumidi-
fication on/off
The "cooling with 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. This prevents the windows from misting
up. G
Risk of accident
If the "cooling with air dehumidification"
function 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 pre-
vent you from observing the traffic condi-
tions, thereby causing an accident. H
Environmental note
The cooling system uses the refrigerant
R134A. This refrigerant does not damage
the earth's ozone layer.
Condensation may drip from the underside of
the vehicle when Thermatic is in cooling
mode.
The "cooling with air dehumidification" func-
tion is only available with air conditioning* or
Thermotronic*. X
To switch on: press theœbutton.
The indicator lamp in the œbutton lights
up.
X To deactivate: press theœbutton.
The indicator lamp in the œbutton goes
out. The cooling with air dehumidification
function has a delayed switch-off feature. Controlling the air conditioning auto-
matically
Only Thermotronic* features the "control air
conditioning 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.
The automatic air conditioning will achieve
optimal operation if "cooling with air dehu-
midification" is also activated. If necessary,
cooling with air dehumidification can be deac-
tivated. X
Turn the key to position 2in the ignition
lock.
X Set the desired temperature.
X To activate: press theUbutton.
The indicator lamp in the Ubutton
comes on. Automatic air distribution and
airflow are activated.
X To deactivate: press theUbutton.
The indicator lamp in the Ubutton goes
out. The airflow is regulated to the level set.
The air distribution is set to the bposi-
tion. Setting the temperature
Heatmatic/air-conditioning system* You can set the temperature for the entire
vehicle.
X
Turn the key to position 2in the ignition
lock.
X To increase/reduce: turn thumb-
wheel 1clockwise or anti-clockwise
(Y page 130), (Y page 131). Only adjust the
temperature in small increments. Start at
22 †. 17 Cont
rols
* optional
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Air conditioning
137
The level of airflow depends on the airflow and
air distribution settings.
!
Close the glove compartment air vent
when heating mode is activated. At high
outside temperatures, open the air vent
and activate the "cooling with air dehumid-
ification" function. Otherwise, tempera-
ture-sensitive items stored in the glove
compartment could be damaged. 1
Air vent thumbwheel
2 Air vent
X To open/close: turn thumbwheel 1
clockwise or anti-clockwise. Setting the rear-compartment air vents 1
Rear-compartment air vent, left
2 Rear-compartment air vent, right
3 Thumbwheel for rear-compartment air
vents
X To open/close: turn thumbwheel 3to the
left or right. Setting the air distribution
P directs the airflow through the demis-
ter vents
Z directs the airflow through the demis-
ter vents
b directs the airflow to the entire vehicle
interior
Y directs the airflow through the footwell
and side air vents
a directs the airflow to the centre and
side air vents
Heatmatic/air-conditioning system* X
Turn the key to position 2in the ignition
lock.
X Turn thumbwheel 5to the corresponding
symbol ( Ypage 130), ( Ypage 131). The
thumbwheel can also be turned to the area
between two symbols.
Thermotronic* X
Turn the key to position 2in the ignition
lock.
X Turn thumbwheel 9to the corresponding
symbol ( Ypage 133). The thumbwheel can Controls
* optional
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Air conditioning
138also be turned to the area between two
symbols. Setting the airflow
Heatmatic/air-conditioning system* X
Turn the key to position 2in the ignition
lock.
X To increase/reduce: turn thumbwheel
3 clockwise or anti-clockwise
(Y page 130), ( Ypage 131).
Thermotronic* X
Turn the key to position 2in the ignition
lock.
X To increase/reduce: turn thumbwheel
1 clockwise or anti-clockwise
(Y page 133). Demisting the windscreen
i You should only select the "demisting"
function until the windscreen is clear again.
Heatmatic/air-conditioning system* X
Turn the key to position 2in the ignition
lock.
X To activate: switch on the cooling with air
dehumidification. 18
X Deactivate air-recirculation mode.
X Turn thumbwheel 1clockwise to
P (Ypage 130), ( Ypage 131).
X Turn thumbwheel 3clockwise to
P (Ypage 130), ( Ypage 131).
X Turn thumbwheel 5clockwise or anti-
clockwise to P(Ypage 130),
(Y page 131).
X To deactivate: turn thumbwheels 1,3
and 5to the desired position (apart from
the P position) (Y page 130),
(Y page 131). Thermotronic* X
Turn the key to position 2in the ignition
lock.
X To activate: press the|button.
The indicator lamp in the |button
comes on.
The system automatically switches to the
following functions:
R cooling with air dehumidification on
R high airflow
R high temperature
R air distribution to the windscreen and
front side windows
R air-recirculation mode off
X To switch off: press the|button.
The indicator lamp in the |button goes
out. The previously selected settings come
into effect again. The cooling with air dehu-
midification function remains on. Air-recir-
culation mode remains deactivated.
or
18 Only vehicles with an air-conditioning system* Cont
rols
* optional
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Air conditioning
139
X
Press the Ubutton.
The indicator lamp in the |button goes
out. Airflow and air distribution are set to
automatic mode.
or
X Press one of the $or% temperature
buttons.
The indicator lamp in the |button goes
out. The air distribution is directed towards
the windscreen. The air conditioning
switches to manual mode.
or
X Turn thumbwheel 1clockwise or anti-
clockwise (Y page 133).
The indicator lamp in the |button goes
out. The air distribution is directed towards
the windscreen. The air conditioning
switches to manual mode. Demisting the windows
Windows misted up on the inside X
Activate the "cooling with air dehumidifica-
tion" function 19
.
X Activate the automatic air conditioning. 20
X If the windows continue to mist up, activate
the "demisting" function.
Windows misted up on the outside X
Activate the windscreen wipers.
X Turn the air distribution thumbwheel to the
Y ora symbol.
i You should only select this setting until
the windscreen is clear again. Switching the rear window heating
on/off
G
Risk of accident
Clear all windows of ice or snow before set-
ting off. Otherwise, impaired visibility could
endanger you and others.
i The rear window heating has a high cur-
rent draw. You should therefore switch it
off as soon as the window is clear, as it only
switches off automatically after several
minutes.
i If the battery voltage is too low, the rear
window heating may switch off.
X Turn the key to position 2in the ignition
lock.
X To activate, press the 121
/F 22
but-
ton.
The indicator lamp in the 1/Fbut-
ton lights up or goes out.
19 Vehicles with air conditioning*/Thermotronic*.
20 Vehicles with Thermotronic*.
21 Vehicles with an air-conditioning system*/Thermotronic*.
22 Vehicles with Heatmatic. Cont
rols
* optional
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Air conditioning
140 Activating/deactivating air-recircula-
tion mode
You can deactivate the flow of fresh air if
unpleasant odours are entering the vehicle
from outside. The air already inside the vehi-
cle will then be recirculated. G
Risk of accident
Only switch over to air-recirculation mode
briefly at low outside temperatures. Other-
wise, the windows could mist up, thus
impairing visibility and endangering your-
self and others. This may prevent you from
observing the traffic conditions, thereby
causing an accident.
X Turn the key to position 2in the ignition
lock.
X To activate: press theÄbutton.
The indicator lamp in the Äbutton lights
up.
i Air-recirculation mode is activated auto-
matically at high outside temperatures.
When air-recirculation mode is activated
automatically, the indicator lamp in the
Ä button is not lit. Outside air is added after about 30
minutes.
X To deactivate: press theÄbutton.
The indicator lamp in the Äbutton goes
out.
i Air-recirculation mode switches off auto-
matically:
R after approximately five minutes at out-
side temperatures below approximately
7 †
R after approximately 5 minutes if cooling
with air dehumidification 23
is switched
off
R after approximately 30 minutes at out-
side temperatures above approximately
7 †
Convenience opening/closing feature G
Risk of injury
Make sure that nobody can become trap-
ped between the side window and the door
frame as the side windows are opened and
closed. Do not place objects or lean against
the side windows when they are being opened or closed. You or the objects could
be drawn in or become trapped between
the side window and the door frame as the
window moves. If there is a risk of entrap-
ment, press the
Äbutton again. Press
the button for stopping, opening or closing
the side windows in the opposite direction
as appropriate.
Make sure that nobody can become trap-
ped as the panorama louvred sliding sun-
roof *is opened and closed. If there is a risk
of entrapment, press the Äbutton
again. Press the button for stopping, open-
ing or closing the panorama louvred sun-
roof* in the opposite direction as appropri-
ate.
X Convenience closing: press and hold
the Ä button until the side windows and
the panorama louvred sliding sunroof*
have closed.
The indicator lamp in the Äbutton lights
up. Air-recirculation mode is activated.
23 Vehicles with air conditioning*/Thermotronic*. Controls
* optional
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