heating Seat Ibiza ST 2012 User Guide

135
Air conditioning
WARNING
● For your safety, the windows should never be fogged up or covered
with snow or ice. This is essential to ensure good visibility. Please famili-
arise yourself with the correct operation of the heating and ventilation
system, including the demist/defrost functions for the windows.
● In air recirculation mode, no cold air from the outside enters the vehi-
cle 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 consider the general notes ⇒ page 142. 
Vehicle ventilation or heating
Fig. 100 Heating con-
trols on the dash panel Ventilating the vehicle interior
–
Turn the temperature selector A
⇒ Fig. 100 anticlockwise.
– Turn blower switch B
to any of the head settings 1 -4.
– Set the airflow to the desired direction using air distribution
control C
.
– Open the relevant air outlets.
Interior heating
– Turn the temperature selector A
⇒ Fig. 100 clockwise to select
the desired temperature.
– Turn blower switch B
to any of the head settings 1 -4.
– Set the airflow to the desired direction using air distribution
control C
.
– Open the relevant air outlets.
Defrosting the windscreen
– Turn the temperature selector A
⇒ Fig. 100 clockwise to reach
the maximum temperature.
– Turn the blower switch B
to setting 4.
– Turn air distribution control to .
– Close outlet 3
.
– Open and turn outlet 4
towards side windows
Keeping the windscreen and the side windows demisted
– Turn the temperature selector A
⇒ Fig. 100 to the heating area. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

136Air conditioning
–Turn blower switch B
to any of the head settings 2 -3.
– Turn air distribution control to .
– Close outlets 3
–
Open and turn outlets 4 towards side windows.
Once the windows are demisted and as a preventive measure, the control C
can be set in position , thus obtaining greater comfort while prevent-
ing the windows from misting again. Heating
Maximum heat output, which is needed to defrost the windows quickly, is
only available when the engine has reached its operating temperature.
Note
Remember that the temperature of the engine coolant should be optimum
to ensure that the heating system functions correctly (except in vehicles fit-
ted with additional heating*) 
Air outlets
Fig. 101 Air vents 

138Air conditioning
WARNING
For your safety, the windows should never be fogged up or covered with
snow or ice. This is essential to ensure good visibility. Please familiarise
yourself with the correct operation of the heating and ventilation system,
including the demist/defrost functions for the windows.
Note
Please consider the general notes. 
Vehicle interior heating or cooling system
Fig. 103 Air condition-
ing controls on the dash
panel
Interior heating
– Disconnect the cooling system using button ⇒ Fig. 103 AC
(the
button light turns off).
– Turn the temperature selector A
to set the desired temperature
inside the vehicle. –
Turn the blower switch to any of the settings 1-4.
– Set the air distribution control C
to the air flow configuration
desired:  (towards the windscreen),  (towards the chest),
 (towards the footwell) and  (towards the windscreen and
footwell areas).
Interior cooling
– Connect the cooling system with button AC
(the button light
should light up).
– Turn the temperature control switch until the desired interior
temperature is reached.
– Turn the blower switch to any of the settings 1-4.
– Set the air distribution control to the air flow configuration de-
sired: 
(towards the windscreen),  (towards the chest), (towards the footwell) and  (towards the windscreen and
footwell areas).
Heating
Maximum heat output, which is needed to defrost the windows quickly, is
only available when the engine has reached its operating temperature.
Coolant system
When the air conditioning is switched on, the temperature and the air hu-
midity go down. This way, if the outside humidity is extreme, the air condi-
tioning prevents the misting of the windows and therefore, comfort is im-
proved.
If the air conditioning does not work, this may be due to the following rea-
sons:
● The engine is stationary.
● The fan blower is switched off. 

139
Air conditioning
● The outside temperature is below +3°C.
● The air conditioning system compressor has been temporarily switched
off because of an increased engine coolant temperature.
● The air conditioner fuse is faulty.
● Another fault in the vehicle. Have the air conditioning checked by a spe-
cialised workshop. 
Air recirculation 
Air recirculation mode prevents fumes or unpleasant smells
from coming from the outside.
When air recirculation mode is switched on (button ⇒ Fig. 103 
with
warning lamp) strong odours in the outside air do not enter the vehicle inte-
rior, for example when passing through a tunnel or in a traffic jam.
When the outside temperature is low, air recirculation mode improves heat-
ing performance by heating air from the interior instead of cold air from the
outside.
When the outside temperature is high, air recirculation mode improves cool-
ing performance by cooling air from the interior instead of warm air from
outside.
For safety reasons, the air recirculation should not be switched on when the
air distribution control is set to the windscreen setting .
WARNING
In air recirculation mode, no cold air from the outside enters the vehicle
interior. If the air conditioner 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).
Note
● When engaging reverse gear, the air recirculation is connected automat-
ically to prevent the entrance of exhaust gases in the vehicle on travelling
backwards. The control lamp on the button 
does not light up.
● If the temperature control is turned to the coldest setting (blue point)
and the switch AC
is activated, the “Air recirculation” function is automati-
cally activated in order to cool the vehicle rapidly using less energy; its
function control lamp will light.
● If the function is not deactivated by pressing the button, this will deacti-
vate after approx. 20 min. 
Economic use of the air conditioning
When the air conditioning is switched on, the compressor consumes engine
power and has influence on fuel consumption. Consider the following
points in order to have the system operating in the minimum possible time.
● If the vehicle interior has overheated due to an excessive solar radiation,
it is best to open the windows or doors to allow the hot air to escape.
● While in motion, the air conditioning should not be switched on if the
windows or the sunroof are open.* 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

140Air conditioning
Climatronic
Controls
Fig. 104 Climatronic controls on the dash panelThe air conditioner only works when the engine is running and the
blower is switched on.
– Press keys 10
and 11 ⇒ Fig. 104 to adjust temperature.
– The functions will be switched on when its buttons are pressed.
When the function is activated, a symbol is displayed on the
screen. Press the button again to switch off the function.
Blower level indicator.
Air recirculation display:
Display AUTO (Automatic operation)
Demisting indicator
AC indicator (Cooling connected)
1
2345
Interior temperature indicator selected
Air flow direction indicator
Fan speed increase
Fan speed decrease
Interior temperature increase
Interior temperature decrease
AUTO
button – Automatic adjustment of temperature, ventilation and
air distribution
Button 
– Windscreen demisting function. The air drawn in is direc-
ted at the windscreen. The air recirculation mode will be switched off as
soon as the demisting function is switched on. At temperatures over
3°C, the cooling system is switched on automatically in order to dry the
air.
Button 
– Air distribution to head area
Button  – Air distribution to the upper body
Button  – Air distribution to footwell
 – Manual air recirculation
AC button – To switch on the air conditioning.
WARNING
For your safety, the windows should never be fogged up or covered with
snow or ice. This is essential to ensure good visibility. Please familiarise
yourself with the correct operation of the heating and ventilation system,
including the demist/defrost functions for the windows.
Note
Please consider the general notes. 
6
789101112
13
1415161718

141
Air conditioning
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. Switching on automatic mode
– Press the button AUTO
. The indication
⇒ Fig. 104 3 is dis-
played.
– Press keys 10
and 11 ⇒ Fig. 104 to adjust the desired tempera-
ture inside the vehicle. We recommend you adjust the tempera-
ture to 22°C (72°F).
A comfortable interior climate is quickly reached when a temperature of
22°C (72°F) is set in automatic mode. Therefore, we recommend you not to
change this adjustment, except as necessary to suit individual preferences
or particular circumstances. The inside temperature can be set between
+18°C (64°F) and +29°C (86°F). If a lower or higher temperature is selected,
LO or HI are respectively displayed on the screen. These are approximate
temperatures which may slightly vary depending on the outside conditions.
Climatronic maintains a constant temperature. To do so, it automatically
regulates the supplied air temperature, the blower speed and the air distri-
bution. The system also considers the sunlight radiation, so there is no
need for manual readjustment. Therefore, automatic mode almost always
provides the best comfort for the vehicle occupants throughout the year.
Automatic mode is switched off whenever an adjustment is made using the
buttons for air distribution or blower. The temperature continues to self-reg-
ulate. Manual mode
In manual mode the air temperature, flow, and the desired
air distribution can be adjusted.
Switching on manual mode
– Press one of the buttons ⇒ Fig. 104 14
to 16 or press the blow-
er control 8 and 9 down. The indicator is switched off 3.
Temperature
The inside temperature can be set between +18°C (64°F) and +29°C (86°F).
These are approximate temperatures which may slightly vary depending on
the outside conditions.
If a temperature below 18°C (64°F), is selected, the display switches to LO In
this setting the system runs at maximum cooling output and the tempera-
ture is not regulated.
If a temperature above 29°C (86°F) is selected, the display switches to HI In
this setting the system runs at maximum heating output and the tempera-
ture is not controlled.
Blower
The blower can be adjusted with buttons 8
and 9 ⇒ Fig. 104. If the blow-
er is off (level 1 is not shown on the screen) and button 9 is pressed after
1 second, the Climatronic switches off.
Air distribution
The air distribution is adjusted using the buttons 
,  and . It is also
possible to open and close some of the air outlets separately.
Switching the air conditioning on and off
Pressing the button AC
the air cooling system can be switched off in order
to save fuel. The temperature continues to self-regulate. The set tempera-
ture can then only be reached if it is higher than the outside temperature. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

142Air conditioning
Air recirculation mode
Air recirculation mode prevents fumes or unpleasant smells
from coming from the outside.
– Press the button 
to switch air recirculation mode on or off.
This is ON if the symbol  ⇒ Fig. 104 is displayed on the
screen.
Air recirculation mode prevents strong odours in the ambient air from enter-
ing the vehicle interior, for example when passing through a tunnel or in a
traffic jam.
When the outside temperature is low, air recirculation mode improves heat-
ing performance by heating air from the interior instead of cold air from the
outside.
When the outside temperature is high, air recirculation mode improves cool-
ing performance by cooling air from the interior instead of warm air from
outside.
For safety reasons, the air recirculation should not be switched on when the
air distribution control is set to the windscreen setting .
WARNING
In air recirculation mode, no cold air from the outside enters the vehicle
interior. If the air conditioner 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).
Note
When engaging reverse gear, the air recirculation is connected automatical-
ly to prevent the entrance of exhaust gases in the vehicle on travelling back-
wards. In this case the symbol 
for air recirculation is not displayed. General notes
Pollution filter
The pollution filter (a combined particulate filter and active carbon filter)
serves as a barrier against impurities in the outside air, including dust and
pollen.
For the air conditioner to work with maximum efficiency, the pollution filter
must be replaced at the specified intervals in the Maintenance Programme.
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.
CAUTION
● If you suspect that the air conditioner is damaged, switch it off with but-
ton AC
to prevent further damage and have it checked by a specialised
workshop.
● Repairs to the air conditioner require specialist knowledge and special
tools. Therefore, we recommend you to take the vehicle to a specialised
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 pud-
dle 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 vehicle interior and is extracted
by slots designed for this purpose. Therefore, do not cover these slots with
items of clothing or other objects. 

148Driving
Starting diesel engines
The engine can only be started using a genuine SEAT key
with its correct code.
– Move the gearbox lever to the neutral position and depress the
clutch pedal thoroughly and hold it in this position for the start-
er to turn the engine on.
– Turn the ignition key to the starting position.
– Turn the ignition key to position ⇒ Fig. 107 2
. The warning
lamp  will light for engine pre-heating.
– When the lamp turns off, turn the ignition key to position 3
to
start the engine. Do not press the accelerator.
– Let go of the ignition key as soon as the engine starts, the start-
er motor must not be allowed to run on with the engine.
When starting a very cold engine, it may be a little noisy for the first few sec-
onds until oil pressure has built up in the hydraulic valve compensators.
This is quite normal, and no cause for concern.
If there are problems starting the engine, see the ⇒ page 248.
Glow plug system for the diesel engine
To avoid unnecessary discharging of the battery, do not use any other major
electrical equipment while the glow plugs are pre-heating.
Start the engine as soon as the glow plug warning lamp goes out.
Starting the diesel engine after the fuel tank has been completely run dry
If the fuel tank has been completely run dry, it may take longer than normal
(up to one minute) to start a diesel engine after refuelling. This is because
the fuel system must eliminate air first.
WARNING
● Never start or run the engine in unventilated or closed rooms. The ex-
haust gases contain carbon monoxide, an odourless and colourless poi-
sonous gas. Risk of fatal accidents. Carbon monoxide can cause loss of
consciousness. It can also result in death.
● Never leave the vehicle unattended if the engine is running.
● Never use “cold start sprays”, they could explode or cause the engine
to run at high revs. Risk of injury.
CAUTION
● When the engine is cold, you should avoid high engine speeds, driving
at full throttle and over-loading the engine. Risk of engine damage.
● The vehicle should not be pushed or towed more than 50 metres to start
the engine. Unburnt fuel could enter the catalytic converter and damage it.
● Before attempting to push-start or tow a vehicle in order to start it, you
should first try to start it using the battery of another vehicle. Note and fol-
low the instructions in ⇒ page 248, Jump-starting.
For the sake of the environment
Do not warm-up the engine by running the engine with the vehicle station-
ary. You should drive off as soon as you start the engine. This helps the en-
gine reach operating temperature faster and reduces emissions. 
Switching off the engine
– Stop the vehicle.
– Turn the ignition key to position ⇒ Fig. 107 1
.
After switching the engine off, the radiator fan may run on for up to 10 mi-
nutes. It is also possible that the fan turns itself on once more if the coolant 

171
Intelligent technology
Electronic Stability Control (ESC)*
The ESC reduces the risk of skidding by braking the wheels individually.
The system uses the steering wheel angle and road speed to calculate the
changes of direction desired by the driver, and constantly compares them
with the actual behaviour of the vehicle. When irregularities occur, for exam-
ple, if the vehicle begins to skid, the ESC brakes the appropriate wheel au-
tomatically.
The forces acting on the braked wheel bring the vehicle back to a stable
condition. If the vehicle tends to oversteer, the system will act on the front
wheel on the outside of the turn.
WARNING
● Remember that not even the ESC can defy the laws of physics. This
should be kept in mind, particularly on slippery and wet roads and when
towing a trailer.
● Always adapt your driving style to suit the condition of the roads and
the traffic situation. The greater safety provided by the ESC should not
encourage you to run any risks.
CAUTION
● To ensure that the ESC works correctly, all four wheels must be fitted
with the same tyres. Any differences in the rolling radius of the tyres can
cause the system to reduce engine power when this is not desired.
● Any modifications made to the vehicle (for example, to the engine,
brake system, running gear or to the combination of wheels and tyres) may
affect the operation of the ABS, EDL, ESC and ASR. Anti-lock brake system (ABS)
The anti-lock brake system prevents the wheels locking during braking
⇒ page 169.

Electronic differential lock (EDL)*
The electronic differential lock helps prevent the loss of trac-
tion caused if one of the driven wheels starts spinning.
EDL helps the vehicle to start moving, accelerate and climb a gradient in
slippery conditions where this may otherwise be difficult or even impossi-
ble.
The system will control the revolutions of the driven wheels using the ABS
sensors (in case of an EDL fault the warning lamp for ABS lights up)
⇒ page 71.
At speeds of up to approximately 80 km/h (50 mph), it is able to balance
out differences in the speed of the driven wheels of approximately 100 rpm
caused by a slippery road surface on one side of the vehicle. It does this by
braking the wheel which has lost traction and distributing more driving
force to the other driven wheel via the differential.
To prevent the disc brake of the braking wheel from overheating, the EDL
cuts out automatically if subjected to excessive loads. The vehicle will con-
tinue to function normally without EDL. For this reason, the driver is not in-
formed that the EDL has been switched off.
The EDL will switch on again automatically when the brake has cooled
down. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

174Driving and the environment
recommend that you have the thickness of your brake pads checked by a
Technical Service more frequently than recommended in the Maintenance
Programme.
If you drive with wet brakes, for example, after crossing areas of water, in
heavy rainfall or even after washing the vehicle, the effect of the brakes is
lessened as the brake discs are wet or even frozen (in winter). In this case
the brakes should be dried by pressing the brake pedal several times.
WARNING
Longer braking distances and faults in the brake system increase the risk
of accidents.
● New brake pads must be run in and do not have the correct friction
during the first 200 km (120 miles). However, the reduced braking ca-
pacity may be compensated by pressing on the brake pedal a little hard-
er. This also applies when the brake pads have to be changed further on.
● If brakes are wet or frozen, or if you are driving on roads which have
been salted, braking power may be lower than normal.
● On steep slopes, if brakes are excessively used, they will overheat.
Before driving down a long steep slope, it is advisable to reduce speed
and change down into a lower gear or range (depending on the type of
transmission). This makes use of engine braking and relieves the brakes.
● Never let the brakes “drag” by applying light pressure. Continuous
braking will cause the brakes to overheat and the braking distance will
increase. Apply and then release the brakes alternately.
● Never let the vehicle run with the engine switched off. The braking
distance is increased considerably when the brake servo is not active.
● If the brake fluid loses its viscosity and is subjected to heavy use, va-
pour bubbles can form in the brake system. This reduces the efficiency of
the brakes.
WARNING (Continued)
● Non-standard or damaged front spoilers could restrict the airflow to
the brakes and cause them to overheat. Before purchasing accessories
please observe the relevant instructions ⇒ page 190, Technical modifi-
cations.
● If a brake system circuit fails, the braking distance will be increased
considerably. Contact a specialised workshop immediately and avoid un-
necessary journeys.

Exhaust gas purification system Catalytic converter*
To maintain the useful life of the catalytic converter
– Use only unleaded petrol with petrol engines, as lead damages
the catalytic converter.
– Do not let the fuel get too low in the tank.
– For engine oil changes, do not replenish with too much engine
oil ⇒ page 206, Topping up engine oil .
– Never tow the vehicle to start it, use jump leads if necessary
⇒ page 248.
If you notice misfiring, uneven running or loss of power when the vehicle is
moving, reduce speed immediately and have the vehicle inspected at the
nearest specialised workshop. In general, the exhaust gas warning lamp
will light up when any of the described symptoms occur ⇒ page 65. If this
happens, unburnt fuel can enter the exhaust system and escape into the en-
vironment. The catalytic converter can also be damaged by overheating. 