light switch MERCEDES-BENZ B-CLASS HATCHBACK 2008 Repair Manual

Driving sys
tems 123
Use Active parking assist for parking spaces
R
that are parallel to the direction of travel.
R that are on straight roads, not bends.
R that are on the same level as the road, i.e.
not on the pavement, for example;
Parking tips:
R On narrow roads, drive as close to the park-
ing space as possible.
R Parking spaces which are littered, over-
grown or partially occupied by trailer tow-
bars might not be identified properly.
R Snowfall or heavy rain may lead to a parking
space being measured inaccurately.
R Pay attention to the Parktronic warning
messages during the parking procedure
(Y page 120).
R You can intervene in the steering procedure
to correct it at any time. Active parking
assist will then be cancelled.
R When transporting a load which protrudes
from your vehicle you should not use Active
parking assist.
R Never use active parking assist when snow
chains or an emergency spare wheel* are
fitted. R
Make sure that the tyre pressures are
always correct. This has a direct influence
on the parking characteristics of the vehi-
cle.
R The way your vehicle is positioned in the
parking space after parking is dependent
on various factors. These include the posi-
tion and shape of the vehicles parked in
front and behind it as well as the condition
of the location. In some cases, Active park-
ing assist may guide you too far into a park-
ing space, or not far enough into it. In some
cases it may also lead you across or onto
the kerb. If necessary, you should abort the
parking procedure with Active parking
assist.
R You can also engage forward gear prema-
turely. The vehicle redirects and does not
drive as far into the parking space Should
a gear be changed too early to achieve a
sensible parking position, the parking pro-
cedure will be aborted.
! When unavoidable, you should drive over
obstacles such as kerbs slowly and not at
a sharp angle. Otherwise you may damage
the wheel rims or tyres. Detecting parking spaces Active parking assist is switched on automat-
ically when driving forwards. The system is
operational at speeds of up to approximately
35 km/h. While in operation, the system inde-
pendently locates and measures parking
spaces on both sides of the vehicle. When
driving at speeds below 35 km/h, you will see
the parking symbol as a status indicator in the
instrument cluster. Active parking assist only
displays parking spaces on the front-
passenger side as standard. Parking spaces
on the driver's side are displayed as soon as
the turn signal on the driver's side is activa-
ted. If you wish to park in a space on the driv-
er's side, the indicator on the driver's side
must remain on. This must remain switched
on until you acknowledge the use of Active
parking assist by pressing the jbutton on
the multi-function steering wheel.
When a parking space has been detected, an
arrow towards the right or the left also
appears. Controls
* optional
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Driving sys
tems 125
i
In tight parking spaces, you will achieve
the best parking results by reversing as far
as possible. When doing so, also observe
the Parktronic messages.
X Stop as soon as Parktronic sounds the con-
tinuous warning tone, if not before.
Manoeuvring may be required in tight park-
ing spaces.
Vehicles with manual transmission: the mes-
sage Park Assist active Please shift
to a forward gear appears in the multi-
function display.
Vehicles with AUTOTRONIC*: the message
Park Assist active Please shift to
D appears in the multi-function display.
X Vehicles with manual transmission: When
the car is stationary, shift to first gear.
Vehicles with AUTOTRONIC*: When the car
is stationary, set the selector lever to posi-
tion R.
Active parking assist immediately steers in
the other direction.
On the multi-function display, the message:
Park Assist active Please acceler- ate and brake the vehicle yourself
appears.
i You will achieve the best parking results
by waiting for the steering procedure to
complete before moving forwards.
X Drive forwards and be ready to brake at all
times.
X Stop as soon as Parktronic sounds the con-
tinuous warning tone, if not before.
Vehicles with manual transmission: the mes-
sage Park Assist active Please shift
into reverse gear appears in the multi-
function display.
Vehicles with AUTOTRONIC*, the message
Park Assist active Please shift to
R appears in the multi-function display.
X Further gear changes* may be necessary.
As soon as the parking procedure is com-
plete, the message Parking assistance
finished Please take over appears.
Active parking assist is now deactivated.
Parktronic is still available.
X Manoeuvre if necessary.
X Always observe the warning messages dis-
played by Parktronic (Y page 120).Cancelling active parking assist You can cancel active parking assist at any
time.
X
Stop the movement of the multi-function
steering wheel or steer yourself.
Active parking assist will be cancelled at
once. The multi-function display shows the
message: Park Assist cancelled .
or
X Press the Parktronic button on the centre
console (Y page 121).
Parktronic is switched off and active park-
ing assist is immediately cancelled. The
multi-function display shows the message:
Park Assist cancelled .
Active parking assist is cancelled automati-
cally if:
R a gear is changed* too early
R parking using active parking assist is no
longer possible
R you are driving faster than 10 km/h
R a wheel spins, ESP ®
is activated or fails. In
such cases the vwarning lamp lights
up in the instrument cluster. Controls
* optional
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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
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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
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Air conditioning
130 Overview of air-conditioning system functions
Heatmatic Function
1
Sets the temperature
P
Demists the windscreen 2
Ä
Activates/deactivates air-
recirculation mode Function
3
Sets the airflow
Switches the air conditioning on/
off
P
Demists the windscreen 4
1
Switches the rear window
heating on/off Function
5
Sets the air distribution
P
Demists the windscreen Cont
rols
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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
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
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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
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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