Get Handling instructions -> Air conditioning Guide for Seat Leon 4 Door First Generation (1999-2006)

Air conditioning 137

Safety First Handling instructions Tips and Maintenance Technical Data

Air conditioning

Heating

Controls and equipment

– Using the controls ⇒ fig. 105 , and you can set the

temperature, air distribution and the air flow.

– 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.

Temperature

Control for setting the temperature. The required temperature 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 heating 

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. 105 On the dash panel: Heater controls

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Air conditioning138

With low ambient temperatures, the air recirculation increases the effective-

ness of the heating system by heating the air inside the passenger compart-

ment rather than the ambient air.

Air distribution

Control for setting the flow of air in the required direction.

 – Air distribution towards the windscreen. Air recirculation is, for safety

reasons, not possible in this position.

 – Air distribution to the upper body

 – Air distribution to footwell

 – Air distribution to the windscreen and the footwell

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 familiarize yourself

with the correct operation of the heating and ventilation system, including

the anti-fog/defrost functions for the windows.

• In air recirculation mode, no ambient air enters the vehicle interior. The

windows can quickly fog over if the heating is switched off. Therefore, you

should never leave the air recirculation mode switched on for longer

periods, as this increases the risk of an accident.

Note

Please observe the general notes ⇒ page 146.

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Air conditioning 139

Safety First Handling instructions Tips and Maintenance Technical Data

Climate control*

Control switches

The air conditioning system only works when the engine is running

and the blower is switched on.

– Using the controls ⇒ fig. 106 and and the control you

can set the temperature, air distribution, and the air flow.

– 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.

Temperature selector ⇒ page 140

Button – cooling system on/off ⇒ page 140

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 141

Air distribution control ⇒ page 140

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 familiarize yourself with

the correct operation of the heating and ventilation system, including the

anti-fog/defrost functions for the windows.

Fig. 106 On the dash panel: Climate controls

2 AC

3 

4 

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Air conditioning140

Note

Please observe the general notes ⇒ page 146.

Heating and cooling the interior

Heating of the vehicle interior

– Turn the temperature selector ⇒ fig. 107 clockwise to select

the required temperature.

– Turn the blower switch to one of the settings 1-4.

– Use the air distribution control to guide the flow of air in the

required direction: (to the windscreen), (to the upper

body), (to the footwell) and (to the windscreen and to the

footwell).

Cooling the passenger compartment

– Switch on the air conditioner using the button ⇒ page 139,

fig. 106 .

– Turn the temperature selector anti-clockwise until the desired

cooling output is reached.

– Turn the blower switch to one of the settings 1-4.

Fig. 107 On the dash panel: Climate controls

 

 

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Air conditioning 141

Safety First Handling instructions Tips and Maintenance 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 footwell) and (to the windscreen and to the

footwell).

Heating system

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 ambient air temperature is lower than +3°C

• The air conditioning system compressor has been temporarily switched

off because the engine coolant temperature is too high

• The air conditioner fuse is faulty

• Another fault in the vehicle. Have the air conditioner checked by a quali-

fied workshop

Air recirculation mode

Air recirculation mode prevents fumes or unpleasant smells from entering the vehicle.

 

 



Fig. 108 On the dash panel: Climate controls

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Air conditioning142

Air recirculation mode ⇒ page 141, fig. 108 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 ambient temperatures, the air recirculation increases the effective-

ness of the heating system by heating the air inside the passenger compart-

ment rather than the ambient air.

With high ambient temperatures, the air recirculation increases the effective-

ness of the air cooling system by cooling the air inside the passenger

compartment rather than the ambient air.

For reasons of safety, air recirculation is not possible when the control for air

distribution is set to the windscreen setting .

WARNING

In air recirculation mode, no ambient air enters the vehicle interior. If the

air conditioning system is switched off, the windows can quickly mist over.

Therefore, you should never leave the air recirculation mode switched on

for longer periods, as this increases the risk of an accident.

2C-Climatronic*

Control switches

The controls allow separate adjustment of air conditioning settings for the left and right.



Fig. 109 On the dash panel: 2C Climatronic controls

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Air conditioning 143

Safety First Handling instructions Tips and Maintenance Technical Data

The air conditioning system only works when the engine is running

and the blower is switched on.

– Press the temperature control buttons ⇒ page 142, fig. 109

or in order to adjust the temperature on the left hand side or

the right hand side respectively.

– The functions will be switched on when the buttons are pressed.

When these functions are activated, they are indicated in the

display. Also, the de-icing and rear heated window functions will

turn on along with their corresponding yellow symbol. Press the

button again to switch off the function.

The temperature can be adjusted separately for the left and right sides of the

vehicle interior.

Display of the selected interior temperature for the left side.

Button – Manual air recirculation mode

Button – Central air distribution

Button – Downward air distribution

Button – Upward air distribution

Display of the selected interior temperature for the right side.

Button – defrost function for the windscreen. The air drawn in from

outside the vehicle is directed at the windscreen. The air recirculation

mode, if switched on, will be switched off as soon as the defrost function

is switched on. At temperatures over 3°C, the air conditioning system will

be switched on automatically and the blower speed will be increased by

one level in order to dry the air. The button lights up yellow and the

symbol appears in the display

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

Temperature selector for the left side ⇒ page 143

Blower control ⇒ page 144

Button – Switches the 2C-Climatronic on and off ⇒ page 144

Button – Automatic temperature, ventilation and air distribution

control ⇒ page 143

Button – Switches cooling system off

Temperature selector for the right side ⇒ page 143

WARNING

For road safety all windows must be clear of ice, snow, and condensation.

This is essential to ensure good visibility. Please familiarize yourself with

the correct operation of the heating and ventilation system, including the

anti-fog/defrost functions for the windows.

Note

Please observe the general notes ⇒ page 146.

Automatic mode

In automatic mode air temperature, air flow and distribution

are automatically regulated so that a specified temperature is

attained as quickly as possible and then maintained.

The temperature can be adjusted separately for the left and right

sides of the vehicle interior.

Switching on automatic mode

– Press the button ⇒ page 142, fig. 109.“AUTO” is shown

on the display.

2 

3 

4 

5 

7 

8 

11 OFF

12 AUTO

13 ECON

AUTO

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Air conditioning144

– Turn the temperature selectors to set the desired temperatures

for the left and right sides of the interior. We recommend 22°C

(72°F).

A comfortable interior climate is quickly reached when a temperature of

+22°C (72° F) is set in automatic mode. It can be changed as necessary to suit

individual preferences or particular circumstances. It is possible to select

interior temperatures from +16°C (61° F) to +29.5°C (86° F). These are

approximate temperatures and the actual temperature may be slightly higher

or lower depending on the ambient conditions.

Climatronic maintains a constant temperature level automatically. The

temperature of the air supplied to the interior, the blower speed and the air

distribution are regulated automatically. The system also allows for the effect

of strong sunlight, so there is no need for manual adjustment. Therefore,

automatic mode provides the best comfort for the vehicle occupants in virtu-

ally all conditions throughout the year.

Automatic mode is switched off whenever an adjustment is made using the

buttons for the air distribution, air flow or . The temperature continues

to be regulated.

Manual mode

In manual mode you can adjust the air temperature, air flow and distribution as required.

Switching on manual mode

– To enter manual mode, press one of the buttons ⇒ fig. 110 to

, or turn the air flow control . The symbol will

disappear from the display.

ECON

Fig. 110 On the dash panel: 2C Climatronic controls

5 ECON

10 AUTO

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Air conditioning 145

Safety First Handling instructions Tips and Maintenance Technical Data

Temperature

There are separate temperature selectors for the left and right sides of the

vehicle interior. The selected temperature is displayed above the selector. It

is possible to select interior temperatures from +16°C (61°F) to +29.5°C

(86°F). These are approximate temperatures and the actual temperature may

be slightly higher or lower depending on the ambient conditions.

If a temperature below 16°C (61°F) is selected, the display indicates LO. In

this setting the system runs at maximum cooling output and the temperature

is not regulated.

If a temperature above 29.5°C (86°F) is selected, the display indicates HI. In

this setting the system runs at maximum heating output and the temperature

is not regulated.

Blower

The air flow may be adjusted freely using the control . Always have the

blower running at a low setting to ensure a constant flow of fresh air into the

vehicle. Pushing the button  to the minimum -1, turns the Climatronic off.

Air distribution

The air distribution is adjusted using the buttons , and . Also, it is

also possible to open and close some of the air vents separately.

Switching the cooling system on and off

Pressing the button switches off the cooling system to save fuel. The

temperature continues to be regulated. The set temperature can then only be

reached if it is higher than the ambient temperature.

Air recirculation mode

Air recirculation mode prevents fumes or unpleasant smells

from entering the vehicle.

– Press the button ⇒ page 144, fig. 110 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

queuing traffic.

With low ambient temperatures, the air recirculation increases the effective-

ness of the heating system by heating the air inside the passenger compart-

ment rather than the ambient air.

With high ambient temperatures, the air recirculation increases the effective-

ness of the air cooling system by cooling the air inside the passenger

compartment rather than the ambient air.

For reasons of safety, air recirculation is not possible when the control for air

distribution is set to the windscreen setting .

WARNING

In air recirculation mode, no ambient air enters the vehicle interior. If the

air conditioning system is switched off, the windows can quickly mist over.

Therefore, you should never leave the air recirculation mode switched on

for longer periods, as this increases the risk of an accident.

  

ECON



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Air conditioning146

General notes

The pollution filter

The pollution 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 pollu-

tion filter must be replaced at the intervals specified in the Service Schedule.

If the filter loses efficiency prematurely due to use in areas with very high

levels of air pollution, the pollution filter must be changed more frequently

than stated in the Service Schedule.

Caution

• If you suspect that the air conditioner is damaged, switch off the air condi-

tioner with 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 that you take the vehicle to a quali-

fied workshop should problems occur.

Note

• If the humidity and temperature outside the vehicle are high, condensa-

tion can drip off the evaporator in the cooling system and form a pool under-

neath 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 is not impaired, and to prevent the

windows misting over.

• The air from the vents flows through the passenger compartment and is

extracted by slots designed for this purpose. Do not cover these slots with

articles of clothing or other objects.

• The air conditioning system operates most effectively with the windows

and the sliding/tilting roof* closed. However, if the sun has heated up the

vehicle, the air inside can be cooled more quickly by opening the windows for

a short period.

• 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.

ECON

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Handling instructions -> Air conditioning for Your Seat Leon 4 Door First Generation (1999-2006)

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