2009 Seat Leon 5D window

Heating, Ventilation and Air conditioning143
Safety First
Controls and equipment
Practical tips
Technical Data
Heating, Ventilation and Air conditioningHeatingControls and equipment– Using the controls ⇒fig. 107 and and the control you
can set the temperature, air distribution and the fan speed.
– To switch a function on or off, press the appropriate button or . When the function is activated, the display window in the
lower left of the button is lit.Te m p e r a t u r e
With the regulator the heating level is determined. The required tempera-
ture inside the vehicle cannot be lower than the ambient temperature. Maximum heat output, which is needed to defrost the windows quickly, is
only available when the engine has reached its operating temperature.
Rear window heater

This function will be switched off automatically approximately
20 minutes
after being switched on. It can also be switched off beforehand by pushing
the button.
Air recirculation mode

Air recirculation mode prevents strong odours in the outside air from
entering the vehicle interior, for example when passing through a tunnel or in
queuing traffic ⇒.
Fig. 107 On the dash panel there are the heating
controls
A1
A4
A5A2
A3
A1
A2
A3
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Heating, Ventilation and Air conditioning
144With low temperatures outside, the air recirculation increases the effective-
ness of the heating system by heating the air inside the passenger compart-
ment rather than the air from outside.
Air distribution
Control for setting the flow of air in the required direction. – Air distribution towards the windscreen. If the windscreen air output is
on and the air recirculation mode is pressed, this remains active. When the
recirculation mode is on, if the air distribution towards the windscreen mode
is selected, the recirculation mode is deactivated. For safety reasons, the air
recirculation mode should not be connected. – Air distribution to the upper body. – Air distribution to footwell – Air distribution to the windscreen and the foot well.
Blower
The air flow can be set at four speeds with the control . The air flow should
always be set at the lowest speed when driving slowly.
WARNING
•For road safety all windows must be clear of ice, snow, and condensa-
tion. This is essential to ensure good visibility. Please familiarise yourself
with the correct operation of the heating and ventilation system, including
the anti-fog/defrost functions for the windscreens.•In air recirculation mode, no cold air from the outside enters the vehicle
interior. The windows can quickly fog over if the heating is switched off.
Therefore, never leave the air recirculation mode switched on for a long
time (risk of accident).Note
Please observe the general notes ⇒page 153.
A4
A5
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Heating, Ventilation and Air conditioning145
Safety First
Controls and equipment
Practical tips
Technical Data
Climatic*Control switchesThe climatic or semi-automatic air conditioning system only works
when the engine is running and the turbine is switched on.
– Using the controls ⇒fig. 108 and and the control you
can set the temperature, air distribution and the turbine speed.
– To switch a function on or off, press the appropriate button , or . When the function is activated, the display window in
the lower corner of the button is lit.
Temperature selector ⇒page 146
Button – Heating, ventilation and air-conditioning system on/off
⇒ page 146 Button – Rear window heating. The heating will be switched off auto-
matically approximately
20 minutes after switching on. It can also be
switched off beforehand by pushing the button.
Button – Air recirculation mode ⇒page 147
Air distribution control ⇒page 146
Blower switch. There are four speed settings for the air flow. The air flow
should always be set at the lowest speed when driving slowly.
WARNING
For road safety all windows must be clear of ice, snow, and condensation.
This is essential to ensure good visibility. Please familiarise yourself with
the correct operation of the heating and ventilation system, including the
anti-fog/defrost functions for the windscreens.
Fig. 108 On the dash panel: Climatic controls
A1
A5
A6A2
A3
A4
A1A2
AC
A3

A4

A5A6
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Heating, Ventilation and Air conditioning147
Safety First
Controls and equipment
Practical tips
Technical Data
– Use the air distribution control to guide the flow of air in the
required direction: (to the windscreen), (to the upper
body), (to the foot well) and (to the windscreen and to the
foot well).Heating
Maximum heat output, which is needed to defrost the windows quickly, is
only available when the engine has reached its operating temperature.
Air conditioner
When the air conditioning system is switched on, not only the temperature,
but also the air humidity in the vehicle interior is reduced. This improves comfort for the vehicle occupants and prevents misting of the windows when
the ambient air humidity is high.
If the air conditioning system cannot be switched on this may be caused by
the following reasons:
•The engine may not be running.•The blower is switched off.•The outside temperature is below +3°C.•The air conditioning system compressor has been temporarily switched
off because the engine coolant temperature is too high.•The air conditioning fuse is faulty.•Another fault in the vehicle. Have the air conditioning checked by a qual-
ified workshop.
Air recirculation mode
Air recirculation mode prevents fumes or unpleasant smells from coming from the outside.





Fig. 110 On the dash panel: Climatic controls
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Heating, Ventilation and Air conditioning
148Air recirculation mode ⇒page 147, fig. 110 prevents strong odours in
the outside air from entering the vehicle interior, for example when passing
through a tunnel or in queuing traffic.
With low temperatures outside, the air recirculation increases the effective-
ness of the heating system by warming the air inside the passenger compart-
ment rather than the cold air from outside.
With high ambient temperatures, the air recirculation increases the effective-
ness of the air conditioning system by cooling the air inside the passenger
compartment rather than the ambient air.
If the windscreen air output is on and the air recirculation mode is pressed,
this remains active. When the recirculation mode is on, if the air distribution
towards the windscreen mode is selected, the recirculation mode is deacti-
vated. For safety reasons, the air recirculation mode should not be
connected.
WARNING
In air recirculation mode, no cold air from the outside enters the vehicle
interior. If the air conditioning system is switched off, the windows can
quickly mist over. Therefore, never leave the air recirculation mode
switched on for a long time (risk of accident).

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Heating, Ventilation and Air conditioning
150
Button – Manual air recirculation mode.
Button – Rear window heating. The heating will be switched off auto-
matically approximately 20 minutes after switching on. However, it may
be turned off by pushing the button. The button lights up yellow and the
symbol appears in the display.
Button – Automatic temperature, ventilation and air distribution
control ⇒page 151
button - Dual zone synchroniser
Button – Switches the 2C-Climatronic on and off ⇒page 152
Blower control ⇒page 152
button – Switches heating, ventilation and air-conditioning system
onWARNING
For road safety all windows must be clear of ice, snow, and condensation.
This is essential to ensure good visibility. Please familiarise yourself with
the correct operation of the heating and ventilation system, including the
anti-fog/defrost functions for the windscreens.
Note
Please observe the general notes ⇒page 153.
Viewing Climatronic information
Information about the Climatronic system can be displayed
on the radio or radio and navigation screen mounted at
factory.
A5

A6

A7
AUTO
A8
DUAL
A9
OFF
A10A11
AC
Fig. 112 Navigation
display with information
about the ClimatronicFig. 113 Radio display
with information about
Climatronic
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Heating, Ventilation and Air conditioning153
Safety First
Controls and equipment
Practical tips
Technical Data
When the button is off (LED off), the heating, ventilation and air condi-
tioning system is off.
When the button is off, the heating, ventilation and air conditioning
system is switched off to save fuel. The temperature continues to self-regu-
late. The set temperature can then only be reached if it is higher than the
ambient temperature.
Driver and passenger temperature control
The button controls the synchronisation of the 2 Climatronic climate
zones.
When the button is on (LED lit), the climate zone of the Climatronic is
personalised, for example: Driver side temperature 22°C and passenger side
temperature 23°C.
When the button is off (LED off), the climate zone of the Climatronic is
synchronised, for example: Driver side temperature 22°C and passenger side
temperature 22°C.
If the button is off and the passenger side temperature is changed, the
function is automatically activated.
Air recirculation mode
Air recirculation mode prevents fumes or unpleasant smells
from coming from the outside.– Press the button
⇒page 152, fig. 114 to switch air recir-
culation mode on or off. It is switched on if the following symbol
appears in the display
.
Air recirculation mode prevents strong odours in the ambient air from
entering the vehicle interior, for example when passing through a tunnel or in
a traffic jam. With low temperatures outside, the air recirculation increases the effective-
ness of the heating system by heating the air inside the passenger compart-
ment rather than the air from outside.
With high ambient temperatures, the air recirculation increases the effective-
ness of the air conditioning system by cooling the air inside the passenger
compartment rather than the ambient air.
If the windscreen air output is on and the air recirculation mode is pressed,
this remains active. When the recirculation mode is on, if the air distribution
towards the windscreen mode is selected, the recirculation mode is deacti-
vated. For safety reasons, the air recirculation mode should not be
connected.
WARNING
In air recirculation mode, no cold air from the outside enters the vehicle
interior. If the air conditioning system is switched off, the windows can
quickly mist over. Therefore, never leave the air recirculation mode
switched on for a long time (risk of accident).General notesThe impurity filter
The impurity filter (a combined particle filter and active carbon filter) serves
as a barrier against impurities in the ambient air, including dust and pollen.
For the air conditioning system to work with maximum efficiency, the pollen
filter must be replaced at the intervals specified in the Service Schedule.
If the filter loses efficiency prematurely due to use in areas reaching very high
pollution levels, the pollen filter must be changed more frequently than
stated in the Service Schedule.
ACAC
DUAL
DUALDUAL
DUAL

A2
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Heating, Ventilation and Air conditioning
154Air conditioner
When the air conditioning system is switched on, not only the temperature,
but also the air humidity in the vehicle interior is reduced. This improves
comfort for the vehicle occupants and prevents misting of the windows when
the ambient air humidity is high.
If the air conditioning system cannot be switched on this may be caused by
the following reasons:•The engine is not running.•The button is disconnected.•The outside temperature is below +3°C.•The air conditioning system compressor has been temporarily switched
off because the engine coolant temperature is too high.•The air conditioning fuse is faulty.•Another fault in the vehicle. Have the air conditioning checked by a qual-
ified workshop.Caution
•If you suspect that the air conditioning is damaged, switch it off with the button to prevent further damage and have it checked by a qualified
workshop.•Repairs to the air conditioning system require specialist knowledge and
special tools. Therefore, we recommend you to take the vehicle to a qualified
workshop.Note
•If the humidity and temperature outside the vehicle are high, condensa-
tion can drip off the evaporator in the cooling system and so forming a puddle
underneath the vehicle. This is completely normal and there is no need to
suspect a leak.
•Keep the air intake slots in front of the windscreen free of snow, ice and
leaves to ensure heating and cooling are not impaired, and to prevent the
windows from misting over.•The air from the vents flows through the passenger compartment and is
extracted by slots designed for this purpose. Therefore, do not cover these
slots with items of clothing or other objects.•The air conditioning system operates most effectively with the windows
and the sliding/tilting roof* closed. However, if the vehicle has been over-
heated by sun, the air inside can be cooled quicklier by opening the windows
for a short time.•Do not smoke while air recirculation mode is on, as smoke drawn into the
air conditioning system leaves a residue on the evaporator, producing a
permanent unpleasant odour.•It is advisable to connect the air conditioning at least once a month, to
lubricate the system gaskets and prevent leaks. If a decrease in the cooling
capacity is detected, an Authorised Service Centre should be consulted to
check the system.
AC
AC
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