key MERCEDES-BENZ B-CLASS HATCHBACK 2008 Owner's Guide

On-board computer
98 Clock
On vehicles without an audio system or with
Audio 5*/Audio 20*, you can set the time
using the on-board computer (Y page 108).Outside temperature display
G
Risk of accident
The road surface may be icy, especially in
wooded areas or on bridges, even if tem-
peratures are just above freezing point. The
vehicle could skid if you fail to adapt your
driving style. You should therefore always
adapt your driving style and speed to suit
the weather conditions.
Changes in the outside temperature are dis-
played after a short delay. On-board computer
Points to remember
The on-board computer is activated as soon
as you turn the key to position 1in the ignition
lock. You can use the on-board computer to
call up information relating to your vehicle
and to make and adjust settings. G
Risk of accident
Only use the on-board computer when road
and traffic conditions permit. You would
otherwise be distracted and unable to con-
centrate properly on driving, and could
cause an accident. Multi-function steering wheel
You can control the multi-function display and
the settings in the on-board computer using
the buttons on the multi-function steering
wheel. 1
Multi-function display
2
æç
R
Selects submenus in the Set-
tings menu
R Changes values
R Adjusts the volume 3
st
Accepts or rejects/ends a call*Controls
* optional
245_AKB; 2; 7, en-GB
wdomann,
Version: 2.11.4 2008-10-17T11:22:31+02:00 - Seite 98Dateiname: 6515_1640_02_buchblock.pdf; preflight

On-board computer
109
X
Press the æorç button to select the
Lighting submenu.
X Press the jbutton to select Headlamp
mode.
X Press the æorç button to set the
switch-on mode for the headlamps to Man-
ual orConstant (constant headlamp
mode).
X Press the j,èorÿ button to
select a different display.
Switching the surround lighting*on/off If the surround lighting is switched on, the
following lights will be switched on automat-
ically in the dark after you have unlocked the
vehicle using the key:
R the side lamps
R the licence plate lighting
R the front foglamps*
The surround lighting switches off automati-
cally after 40 seconds or when the driver's
door is opened.
X Press the èor· button to select the
Settings menu.
X Press the jbutton to select submenus. X
Press the æorç button to select the
Lighting submenu.
X Press the jbutton to select Surround
lighting.
X Press the æorç button to switch
the Surround lighting on or off.
X Press the j,èorÿ button to
select a different display.
Activating or deactivating the exterior
lighting delayed switch-off* When you activate the
Headl. delayed
switch-off function, the exterior lighting
remains on for another 15 seconds after clos-
ing the doors when it is dark. If the engine is
switched off and then none of the doors are
opened, or if an open door is not closed, the
exterior lighting goes out after 60 seconds.
If you have activated the delayed switch-off
function and switched off the engine, the fol-
lowing remain lit:
R the side lamps
R the licence plate lighting
R the front foglamps* X
Press the èor· button to select the
Settings menu.
X Press the jbutton to select submenus.
X Press the æorç button to select the
Lighting submenu.
X Press the jbutton to select Headl.
delayed switch-off.
X Press the æorç button to activate
or deactivate the Headl. delayed
switch-off function.
X Press the j,èorÿ button to
select a different display.
To temporarily deactivate the switch-off
delay:
X Before leaving the vehicle, turn the key to
position 0in the ignition lock.
X Turn the key to position 2in the ignition
lock and back to position 0.
Delayed switch-off is deactivated.
When you start the engine again, the switch-
off delay is reactivated.
Activating/deactivating the interior
lighting delayed switch-off If you remove the key from the ignition lock
while the
Interior lighting delayed Controls
* optional
245_AKB; 2; 7, en-GB
wdomann
,V ersion: 2.11.4
2008-10-17T11:22:31+02:00 - Seite 109 ZDateiname: 6515_1640_02_buchblock.pdf; preflight

Driving sys
tems 122
i
Parktronic is automatically activated
when you turn the key to position 2in the
ignition lock.
Trailer towing* Parktronic is deactivated for the rear area
when you establish an electrical connection
between your vehicle and a trailer.
! Remove the detachable trailer coupling if
it is no longer required. Parktronic meas-
ures the minimum detection range to an
obstacle from the bumper, not the ball cou-
pling. Active parking assist*
Active parking assist is an electronic parking
aid with ultrasound. Ultrasound is used to
measure the road on both sides of the vehicle.
A suitable parking space is indicated by the
parking symbol. Active steering intervention
can assist you during parking. You may also
use Parktronic (Y page 119). When Parktronic
is deactivated, active parking assist is also
unavailable. G
Risk of accident
Active parking assist is merely an aid and
may sometimes recommend parking
spaces that are not suitable for parking.
These might be, for example, spaces where
parking is prohibited, driveways, unsuitable
surfaces, etc.
Active parking assist measures the parking
space as you drive past it. Any later
changes to the parking space are not taken
into account. This may be the case, for
instance, when the vehicle parked in front
of or behind the space changes its position
or when an obstacle is moved into the park-
ing space.
Active parking assist does not relieve you
of the responsibility of paying attention. If
you rely solely on Active parking assist, you
could cause an accident and injure yourself
and others.
You are always responsible for safety and
must continue to pay attention to your
immediate surroundings when parking and
manoeuvring. G
Risk of accident
Objects located above the height range of
Active parking assist will not be detected when the parking space is measured. These
are not taken into account when the park-
ing procedure is calculated, e. g. overhang-
ing loads, tail sections or loading ramps of
goods vehicles. In some circumstances,
Active parking assist may therefore guide
you into the parking space too early. This
may lead to a collision. For this reason, you
should avoid using Active parking assist in
such situations.
G
Risk of accident
The front of the vehicle will veer out in the
direction of the oncoming traffic during the
parking operation. In some cases the vehi-
cle will also take you onto sections of the
oncoming lane during the parking proce-
dure.
You are responsible for safety at all times
and must pay attention to any road users
approaching or passing. Stop the vehicle if
necessary or cancel the Active parking
assist parking procedure. G
Risk of injury
Make sure that no persons or animals are
in the manoeuvring range. Otherwise, they
could be injured. Controls
* optional
245_AKB; 2; 7, en-GB
wdomann,
Version: 2.11.4 2008-10-17T11:22:31+02:00 - Seite 122Dateiname: 6515_1640_02_buchblock.pdf; preflight

Driving sys
tems 126
A warning tone sounds. the multi-function
display shows the message: Park Assist
cancelled .
When active parking assist is cancelled, you
must steer again yourself.
Trailer towing* For vehicles with a trailer coupling, the mini-
mum length for parking spaces is slightly
increased.
If you have attached a trailer to your vehicle,
you should not use active parking assist.
Once the electrical connection is established
between your vehicle and the trailer, active
parking assist is no longer available. Park-
tronic is deactivated for the rear area. ECO start/stop function*
The ECO start/stop function automatically
switches off the engine as soon as you stop
the vehicle and restarts the engine as soon as
you prepare to pull away again. Each time the
engine is started using the key, the ECO
start/stop function is activated.
Conditions for the automatic engine
switch-off The ECO start/stop function automatically
switches off the engine if all of the following
conditions are met:
R
you have shifted to neutral
R the clutch pedal is not depressed
R the brake pedal is depressed
R the vehicle speed is very low
R the engine has reached its operating tem-
perature
R the indicator lamp in the ECO button is lit
green
R the bonnet is closed
R the outside temperature is within the com-
fort range R
the battery is sufficiently charged
R the brake vacuum is stable
Conditions for the automatic engine
start The ECO start/stop function automatically
switches on the engine if one of the following
conditions is met:
R
the brake pedal is released
R the clutch pedal is depressed
R the vehicle speed exceeds a certain thresh-
old
R the ECO button is pressed
R the brake vacuum has decreased
R the battery charge has dropped
R the demister function of Thermotronic* is
selected Controls
* optional
245_AKB; 2; 7, en-GB
wdomann,
Version: 2.11.4 2008-10-17T11:22:31+02:00 - Seite 126Dateiname: 6515_1640_02_buchblock.pdf; preflight

Driving sys
tems 127
Activating/deactivating the ECO start/
stop function
1
To activate/deactivate the ECO start/
stop function
2 Indicator lamp If indicator lamp
2is off, the ECO start/stop
function is deactivated. The engine will then
not be switched off automatically when the
vehicle stops.
i The next time that the engine is started
using the key, the ECO start/stop function
is automatically reactivated. Controls
245_AKB; 2; 7, en-GB
wdomann,
Version: 2.11.4 2008-10-17T11:22:31+02:00 - Seite 127 ZDateiname: 6515_1640_02_buchblock.pdf; preflight

Air conditioning
134 Function
c
Display
d
%
Reduces the temperature, left e
Ä
Activates/deactivates air-
recirculation mode i
Notes and recommendations on optimum
air conditioning:
R Activate the air conditioning using
the U andœ buttons. The indica-
tor lamps on the Uandœ buttons
light up.
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.
R You can use the residual heat to heat or
ventilate the vehicle interior after you
have switched off the ignition. Switching the air conditioning on/off
i When the air conditioning is switched off,
the air supply and air circulation are also
switched off. Only select this setting briefly,
otherwise the windows may mist up.
i Activate the air conditioning primarily
using the Ubutton.
Heatmatic/air-conditioning system* X
Turn the key to position 2in the ignition
lock.
X To activate: turn thumbwheel 3clock-
wise to the desired position (apart from the
0 position) (Y page 130), (Ypage 131).
X To deactivate: turn thumbwheel 3anti-
clockwise to position 0(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 goes
out. The previously selected settings come
into effect again.
or
X Press the Ubutton.
The indicator lamp in the Ubutton
comes on. Airflow and air distribution are
set to automatic mode.
X To deactivate: press the´button.
The indicator lamp in the ´button
comes on. Cont
rols
* optional
245_AKB; 2; 7, en-GB
wdomann,
Version: 2.11.4 2008-10-17T11:22:31+02:00 - Seite 134Dateiname: 6515_1640_02_buchblock.pdf; preflight

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
245_AKB; 2; 7, en-GB
wdomann, Version: 2.11.4
2008-10-17T11:22:31+02:00 - Seite 135 ZDateiname: 6515_1640_02_buchblock.pdf; preflight

Air conditioning
136
Thermotronic* 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: press the$or
% button. Only change the temperature
setting in small increments. Start at 22 †.
The temperature is shown in the display. Adjusting the air vents
G
Risk of injury
Very hot or very cold air can flow from the
air vents. This could cause burns or frost-
bite to bare skin in the immediate vicinity
of the vents. Keep bare skin away from
these air outlets. If necessary, direct the
airflow away to a different area of the vehi-
cle interior.
Please observe the following notes to ensure
that the air can flow freely through the air
vents:
R keep the air inlet between the windscreen
and the bonnet free of deposits, such as ice, snow and foliage, to guarantee the sup-
ply of fresh air into the vehicle interior.
R never cover the vents or air inlet and outlet
grilles in the vehicle interior.
i Position the sliders for the centre air
vents in the central detent position for vir-
tually draught-free ventilation.
Setting the centre air vents 1
Centre air vent, left
2 Centre air vent, right
3 Thumbwheel for centre air vent, right
4 Thumbwheel for centre air vent, left X
To open/close: turn thumbwheels 3and
4 up or down.
Adjusting the side air vents X
To open/close: turn thumbwheel 3up or
down.
i Demister vent 1is never shut com-
pletely, even if side air vent 2is shut.
Setting the glove compartment air
vent* The glove compartment can be ventilated, for
instance, to cool its contents, when the air
conditioning*/Thermotronic* is activated.
17 Vehicles with air conditioning* Cont
rols
* optional
245_AKB; 2; 7, en-GB
wdomann,
Version: 2.11.4 2008-10-17T11:22:31+02:00 - Seite 136Dateiname: 6515_1640_02_buchblock.pdf; preflight

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
245_AKB; 2; 7, en-GB
wdomann , Version: 2.11.4 2008-10-17T11:22:31+02:00 - Seite 137 ZDateiname: 6515_1640_02_buchblock.pdf; preflight

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
245_AKB; 2; 7, en-GB
wdomann,
Version: 2.11.4 2008-10-17T11:22:31+02:00 - Seite 138Dateiname: 6515_1640_02_buchblock.pdf; preflight