Air conditioning system
104
Air conditioning systemIntroductionDescription and informationIf the cooling system is switched on, the temperature and air humidity drops in the vehicle. The wellbeing of the occupants of
the car is enhanced as a result of this
particularly at high outside temperatures and a high air humidity. The system prevents the windows misting up during the cold season of the year. The heating effect is dependent upon th
e coolant temperature, thus full heat
output only occurs when the engine
has reached its operating temperature.
It is possible to briefly activate recirc
ulated air mode in order to enhance the
cooling effect - Climatic
⇒page 108, Climatronic
⇒page 111.
The air inlet in front of the windscreen must be free of ice, snow or leaves in order to ensure that the heating and cooling systems operate properly. After switching on the cooling
Condensation
from the evaporator of the air condi-
tioning may drip down and form a puddle
below the vehicle. This is quite normal
and not an indication of a leak!
WARNING
•
For your own safety and that of other road users, ensure that all the
windows are free of ice, snow and mistin
g. Please familiarize yourself about
how to correctly operate th
e heating and ventilation systems, how to demist
and defrost the windows, as well as with the cooling mode.•
You should not leave recirculated air mode on over a longer period of
time, as “stale” air may result in fatigue in the driver and occupants, divert your attention and also cause the windows to mist up. The risk of having an accident increases. Switch recirculated air mode off as soon as the windows begin misting up.
Note
•
The used air streams out through the air removal openings in the luggage
compartment.•
If the cooling system has not been switched on for a lengthy period, odours may
be produced at the evaporator because of
deposits. Switch the cooling system on
at least once a month for approximately 5 mi
nutes at the highest blower stage - also
during the cold season of the year - in order to avoid such odours. Also open a window for a short time.•
We recommend that you do not smoke in the vehicle when the recirculating air
mode is operating since the smoke which is drawn at the evaporator from the inte-rior of the vehicle forms deposits in the
evaporator of the air conditioning system.
This produces a permanent odour when th
e air conditioning system is operating
which can only be eliminated through co
nsiderable effort and expense (replace-
ment of compressor).•
Please refer to the information regarding the recirculated air mode for Climatic
⇒ page 108 or for Climatronic
⇒page 111.
Using the air conditioning system economicallyThe compressor on the air co
nditioning system uses po
wer from the engine when
in cooling mode which will effect the fuel consumption. It recommended to open the windows or the doors of a vehicle for which the inte- rior has been strongly heated through the ef
fect of direct sunlight in order to allow
the heated air to escape. The cooling system should not be switched on while travelling when the window is open. The desired interior temperature can also be achieved without switching in the cooling system just by switching to fresh air mode.
s2dk.1.book Page 104 Wednesday, April 8, 2009 12:23 PM
Air conditioning system
105
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
For the sake of the environment
When you economize on fuel, you
also reduce pollutant emissions.
Operational problemsIf the cooling system does not operate at outside temperatures higher than +5 °C, there is a problem in the system. The reasons for this may be:•
The fuse on the air conditioning system
has blown. Check the fuse, replace it if
necessary
⇒page 256.
•
The cooling system has switched off automatically for a short time because the
coolant temperature of the engine is too hot
⇒page 18.
If you are not able to rectify the operat
ional problem yourself, or if the cooling
capacity decreases, switch the cooling sy
stem off. Contact a specialist garage.
Air outlet ventsFig. 125 Air vents at the front
Fig. 126 Air vents at the rearOpen air outlet vents – Turn the rotary knob to position
.
Close air outlet vents – Turn the rotary knob to position
0.
Redirecting air flow – The horizontal as well as the vertical direction of the air flow is set with
the handle in the middle of the air outlet vents.
The air outlet vents
2, 3 ⇒fig. 125
and
5 ⇒fig. 126
can be closed and opened indi-
vidually. Unwarmed or cooled air will flow out of the opened air outlet vents according to the setting of control dial and the outside atmospheric conditions.
Note
The air outlet vents
1 ensure in the ventilation and cooling mode for a comfortable
(no-draught) ventilation of the interior of
the vehicle, also if the air outlet vents
3
are closed.
s2dk.1.book Page 105 Wednesday, April 8, 2009 12:23 PM
Air conditioning system
107
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
switching cooling on and off – Press the button
⇒
page 106, fig. 127
. The warning light lights
up in the button.
– When you again press the switch , the cooling system is switched
off. The warning light in the button goes out.
Rear window heater – Press button . Further information
⇒
page 70.
Auxiliary heating (auxiliary heating) – Press the button in order to directly switch on/off the auxiliary
heating (auxiliary heating and ventilation. Further information ⇒
page 112.
The set temperature will be automatica
lly maintained other than when the
control dial is on the extreme
right or extreme left position:
•
Extreme right position - full heating,
•
Extreme left position - full cooling,
•
The blower should aways be on to prevent the windows from misting up.Note
The whole heat output will be needed to
unfrost the windscreen
and side windows.
No warm air will be fed to the footwell. Th
is can lead to restriction of the heating
comfort.
Set ClimaticRecommended settings of Climatic controls for the respective operating modes:
AC
A1
AC
A2A3
s2dk.1.book Page 107 Wednesday, April 8, 2009 12:23 PM
Air conditioning system
108
Recirculated air mode In recirculated air mode air is sucked
out of the interior of the vehicle
and then fed back into the interior.Recirculated air mode prevents polluted air outside the vehicle from getting into the vehicle, for example when driving through a tunnel or when standing in a traffic jam. Switching recirculated air mode on – Press the button
⇒
page 106, fig. 127
the warning light lights
up in the button.
Switching recirculated air mode off – Press again the button - the warning light in the button goes out.
The recirculated air mode is switched off au
tomatically if the air
distribution control
is in position
⇒page 106, fig. 127
. You can also switch recirculated air mode
on again from this setting by repeatedly pressing button .
WARNING
You should not leave recirculated air mode on over a longer period of time, as “stale” air may result in fatigue in the driver and occupants, divert your attention and also cause the windows to mist up. The risk of having an acci- dent increases. Switch recirculated air mode off as soon as the windows begin misting up.
Set-up
Setting of the control dial
Button
Air outlet vents 2
Defrosting the windscreen and side windows
recommended 22°C
3
switched off
do not switch on
open and align with the side
window
Free windscreen and side windows from mist
desired temperature
2
switched on
do not switch on
open and align with the side
window
the fastest heating
recommended 22°C
2
switched off
briefly switched on
open
comfortable heating
desired temperature
2 or 3
switched off
do not switch on
open
the fastest cooling
recommended 22°C
briefly4, then 2or
3
switched on
briefly switched on
open
optimal cooling
desired temperature
1, 2 or 3
switched on
do not switch on
open and align to the roof
Fresh air mode - ventilation
up to the stop towards the left
desired position
switched off
do not switch on
open
AA
AB
AC
A1
A4
A4
AC
s2dk.1.book Page 108 Wednesday, April 8, 2009 12:23 PM
Air conditioning system
109
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Climatronic* (automatic air conditioning)Description The Climatronic system is a combin
ation of an automatic heating,
fresh air and cooling system which provides optimal comfort for the occupants of the car.The Climatronic maintains fully automatically a convenience temperature. This is achieved by automatically varying the temperature of the outflowing air, the blower stages and the air distribution. The system also takes into account sunlight which eliminates the need to alte
r the settings manually. The
automatic mode
⇒ page 110 ensures maximum wellbeing of th
e occupants at all times of the year.
Description of Climatronic system The cooling operates only if the following conditions are met:•
engine running,
•
outside temperature above approx. +2°C,
•
switched on.
The AC compressor is switched off at a hi
gh coolant temperature in order to provide
cooling at a high load of the engine. Recommended setting for al
l periods of the year:
•
Set the desired temperature, we recommend 22 °C.
•
Press the button
⇒fig. 128
.
•
Move the air outlet vents
2 and
3 so that the air flow is directed slightly upwards.
Aeration of the vehicle when ignition is switched off* On vehicles fitted with power sliding/tilting roof with solar cells* the fresh air blower is automatically switched over to “solar mode” if the sun rays are sufficient after switching off the ignition. The solar
cells on the sliding/tilting roof deliver
power for the fresh air blower
. This supplies the interior of the car with fresh air.
For an optimum ventilation, the air outlet vents
2 and
3 must be opened
⇒ page 105, fig. 125
.
The ventilation functions only when the sliding/tilting roof is closed.
Note
On vehicles equipped with a
factory-fitted radio* or navi
gation*, the information of
the Climatronic is also shown on the display. This function can be switched off, see operating instructions of the ra
dio* or the navigation system*.
Overview of the control elements The controls enable a separate setting of the temperature for the left and right side.Fig. 128 Climatroni
c: Control elements
The buttons
Defrost windscreen intensively Air flow to the windows Air flow to head Air flow in the footwell Recirculated air mode with air quality sensor Rear window
heater
Buttons / control dial
AC
AUTO
A1
A2
A3
A4
A5
A6
s2dk.1.book Page 109 Wednesday, April 8, 2009 12:23 PM
Air conditioning system
111
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
You can set the interior temperature between +18°C and +26°C. The interior temperature is regulated automatically with
in this range. If you chose a tempera-
ture lower than +18°C, a blue symbol lights
up at the start of the numerical scale. If
you chose a temperature higher than +26°C,
a red symbol lights up at the end of
the numerical scale. In both limit positio
ns the Climatronic operates at maximum
cooling or heating capacity, respectively. Th
e temperature is not controlled in this
case. Lengthy and uneven distribution
of the air flow out of the
vents (in particular at the
leg area) and large differences in temperature, for example when getting out of the vehicle, can result in chills in sensitive persons.Recirculated air mode In recirculated air mode air is sucked
out of the interior of the vehicle
and then fed back into the interior
. When the automatic air distribu-
tion control is switched on, an air quality sensor measures the concentration of pollutants in the drawn-in air.Recirculated air mode prevents polluted air outside the vehicle from getting into the vehicle, for example when driving through a tunnel or when standing in a traffic jam. If a considerable increase in concentration of pollutants is recognized by the air quality sensor, when the automatic air distribution control is switched on, the air distribution control will temporarily be switched off. If the concentration of pollutants decreases to the normal level, the air distributi
on control is automatically switched
off so that fresh air can be guided into the vehicle interior. Switching recirculated air mode on – Press the button repeatedly until the warning light on the left
side of the button lights up.
Switch on automatic air distribution control – Press the button repeatedly until the warning light on the right
side of the button lights up.
Switch off automatic air distribution control temporarily – If the air quality sensor does not switch on the air distribution control
automatically when there is a nauseating smell, you can switch it on yourself by pressing the button *. The warning light lights up in the button on the left side.
Switching recirculated air mode off – Press the button or press the button repetitively, until the
warning lights in the button go out.
WARNING
You should not leave recirculated air mode on over a longer period of time, as “stale” air may result in fatigue in the driver and occupants, divert your attention and also cause the windows to mist up. The risk of having an acci- dent increases. Switch recirculated air mode off as soon as the windows begin misting up.
Note
•
If the windscreen mists up, press the button
⇒page 109, fig. 128
.
After the windscreen has been demisted, press the button .•
The automatic air distribution control operates only if the outside temperature
is higher than approx. 2°C.Controlling blower There are a total of seven blower stages available.The Climatronic system controls the bl
ower stages automatically in line
with the interior temperature. You can also, however, adapt the blower stages manually to suit your particular needs. – Press again the button on the left
side (reduce blower speed) or on
the right side (increase blower speed).
AUTO
A1
AUTO
s2dk.1.book Page 111 Wednesday, April 8, 2009 12:23 PM
Air conditioning system
114
Using the system So that the auxiliary heating (auxiliary heating and ventilation) func- tions according to your expectations, it is necessary to carry out the basic setting before its programming.Basic setting – On the information display, select from the
Main menu
the menu
point
Aux. heating
.
– In the menu
Aux. heating (auxiliary heating)
⇒
fig. 130
select the
menu point
Weekday
and set the current day.
– Return to a higher level by selecting the menu point
Back
, i. e. in the
menu
Aux. Heating (auxiliary heating)
.
–In the menu
Aux. Heating
select the menu point
Running time
and
set the desired operating period in steps of 5 minutes. The operating period can be 10 to 60 minutes.
– By selecting the menu point
Back
, you will reach in the menu
Aux. Heating (auxiliary heating)
.
– In the menu
Aux. heating (auxiliary heating)
select the menu point
Mode
.
– In the menu
Mode
select the desired mode
Heating
or
Ventilation
.
ProgrammingFor the programming of the auxiliary heatin
g (auxiliary heating and ventilation) in
the menu
Aux. heating (Aux. heating)
there are three pre-set times:
•
Pre-set time 1
•
Pre-set time 2
•
Pre-set time 3
In each pre-set time, the day and the time (hour and minute) can be set for switching on the auxiliary heating and/or ventilation. An empty position can be found between
Sunday and Monday when selecting the
day. If this empty position is selected,
the activation is performed without taking
into account the day. If you leave the pre-set menu by selecting the menu
Back
or do not operate the
display for longer than 10°seconds, the set values are stored, but the pre-set time is not active. Both other pre-set times can be programmed and stored in the same way.If you select the menu
Activate
after setting the desired values, appears on the
display
Pre-set time (weekday, hours, minute) activated! (Pre-set time
(weekday, hour, minute) activated!
and the set pre-set time is active.
Only one programmed pre-set time can be active.The last programmed pre-set time remains active.After the auxiliary heating activates at the set time, it is necessary to pre-set a time again. Changing the active pre-set time is carried out after selecting the menu point Activate
in the menu
Aux. heating (auxiliary heating)
by selecting a pre-set time.
The prerequisite for the correct switching
on of the auxiliary heating (auxiliary
heating and ventilation) according to th
e programmed pre-set time is the correct
setting of the current time and the weekday
⇒page 114.
Fig. 130 Information display: Aux. heating
s2dk.1.book Page 114 Wednesday, April 8, 2009 12:23 PM
Starting-off and Driving
121
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Shift into reverse only when the car is stationary. Depress the clutch pedal and hold it fully depressed. Wait a moment before
engaging reverse gear in order to avoid
any shift noises. The reversing lights will come on once reve
rse gear is engaged, provided the igni-
tion is on. Superb GreenLine - Shift recommendation for changing gears On the model Superb GreenLine, the currently engaged gear
⇒fig. 136
is
shown in the display of the instrument cluster. In order to minimise the fuel consumptio
n, a recommendation for shifting into
another gear is indicated in the display. An arrow points up or down depending on whether it is recommended to shift to
a higher gear or to a lower gear. At the
same time, the recommended gear is indicated instead of the currently engaged gear .
WARNING
Never engage the reverse gear when driving - risk of accident!
Note
•
One should not lay the hand on the shift lever while driving the vehicle. The
pressure of the hand will be transferred to the gearshift forks in the gearbox. This can, over a period of time, lead to early wear of the gearshift forks.
•
Depress the clutch pedal fully when changing gears, in order to avoid unneces-
sary wear and damage to the clutch and gearbox parts.HandbrakeApplying the handbrake – Pull the handbrake lever up fully. Releasing the handbrake – Pull the handbrake lever up slightly
and
at the same time
press in the
locking button
⇒
fig. 137
.
– Hold the button pressed and push the handbrake lever down fully
⇒
.
The handbrake warning light
lights up when the handbr
ake is applied, provided
the ignition is on. A warning signal sounds and the following text appears in the display* if you have inadvertently driven off with the handbrake applied:
Release parking brake!
The handbrake warning is activated if you dr
ive at a speed of more than 6 km/h for
more than 3 seconds.
Fig. 136 Shift recommenda- tion for changing gears
AA
AB
AA
Fig. 137 Centre console: Handbrake
s2dk.1.book Page 121 Wednesday, April 8, 2009 12:23 PM