2012 Seat Leon 5D engine

138Air conditioning
Control but-
tonAdditional information. Manual air conditioning system.
1 Temper-
ature
 ... Rotate the control to set the temperature accordingly.
2 Fan
Setting 0: fan and manual air conditioning switched off, level
6: maximum fan level
3 Air dis-
tributionRotate the continuous control to direct the airflow to the de-
sired area.

Defrost function. The airflow is directed at the windscreen. In
this position, air recirculation is automatically switched off or
is not switched on. Increase the fan power to clear the wind-
screen of condensation as soon as possible. To dehumidify
the air, the cooling system will automatically switch on.
The air is directed at the chest of driver and passengers by
the dash panel air vents.
Distribution of air towards the chest and the footwell area.
Air distribution towards the footwell.
Air distribution towards the windscreen and the footwell.

Heated rear window: this only works when the engine is run-
ning and switches off automatically after a maximum of 10
minutes.
Air recirculation ⇒ page 141.
Control but- tonAdditional information. Manual air conditioning system.
 Buttons for seat heating ⇒ page 126.

Turn the control to the position   to make maximum
cooling capacity available. Air recirculation and the cooling
system are turned on automatically.
WARNING
Stuffy or used air will increase fatigue and reduce driver concentration
possibly resulting in a serious accident.
● Never leave the fresh air fan turned off or use the air recirculation for
long periods of time; the air in the vehicle interior will not be refreshed.

Heating system and fresh air controls
Fig. 83 In the centre console: heating system and fresh air controls 

139
Air conditioning
Control but-
tonAdditional information. Heating and fresh air system
1 Temper-
ature
 ... Rotate the control to adjust the temperature accordingly. The
desired temperature for the interior cannot be lower than
that of the exterior air temperature, as the heating and fresh
air system cannot cool or dehumidify the air.
2 Fan
Setting 0: fan, heating and fresh air systems switched off,
level 6: maximum fan level.
3 Air dis-
tributionRotate the continuous control to direct the airflow to the de-
sired area.
The airflow is directed at the windscreen.
The air is directed at the chest of driver and passengers by
the dash panel air vents.
Distribution of air towards the chest and the footwell area.
Air distribution towards the footwell.
Air distribution towards the windscreen and the footwell.

Heated rear window: this only works when the engine is run-
ning and switches off automatically after a maximum of 10
minutes.
Air recirculation ⇒ page 141.
Setting for conditions of optimal visibility
● Disable air recirculation mode.
● Set the fan 2
to setting 1 or 2.
● Turn the temperature control 1 to the desired position. ●
Open and direct all the air outlets in the dash panel.
● Turn the air distribution control 3
to the desired position.
WARNING
Stuffy or used air will increase fatigue and reduce driver concentration
possibly resulting in a serious accident.
● Never leave the fresh air fan turned off or use the air recirculation for
long periods of time; the air in the vehicle interior will not be refreshed.

Instructions for use of the air conditioner
The interior cooling system only works when the engine is running and fan
is switched on.
The air conditioner operates most effectively with the windows and the pan-
oramic sliding sunroof closed. However, if the vehicle has heated up after
standing in the sun for some time, the air inside can be cooled more quickly
by opening the windows and the panoramic sliding sunroof briefly.
Setting for conditions of optimal visibility
When the air conditioning is switched on, the temperature and the air hu-
midity in the vehicle interior drop. Hence, when the outside air humidity is
high, the windows do not mist over and comfort for the vehicle occupants is
improved:
With manual air conditioning
● Switch off air recirculation.
● Set the fan to the required setting.
● Turn the temperature control to the centre position.
● Open and direct all the air outlets in the dash panel. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

140Air conditioning
● Turn the air distribution control to the required position.
● Press the button 
to switch on the cooling system. The button will
light up.
With Climatronic
● Press button 
.
● Set the temperature to +22 °C (+72 °F).
● Open and direct all the air outlets in the dash panel.
Climatronic: change the temperature unit on the screen of the radio or on
the factory-fitted navigation system
Changing the temperature display from Celsius to Fahrenheit on radio or on
the factory-fitted navigation system is done using the menu on the instru-
ment panel ⇒ page 73.
The cooling system cannot be activated
If the air conditioning system cannot be switched on, this may be caused by
the following:
● The engine is not running.
● The fan is switched off.
● The air conditioner fuse has blown.
● The outside temperature is lower than approximately +3 °C (+38 °F).
● The air conditioner compressor has been temporarily switched off be-
cause the engine coolant temperature is too high.
● Another fault in the vehicle. Have the air conditioner checked by a speci-
alised workshop.
Special Characteristics
If the humidity and temperature outside the vehicle are high, condensation
can drip off the evaporator in the cooling system and form a pool under-
neath the vehicle. This is normal and does not indicate a leak!
Note
After starting the engine, any residual humidity in the air conditioner could
mist over the windscreen. Switch on the defrost function as soon as possi-
ble to clear the windscreen of condensation. 
Air vents
Fig. 84 On the dash panel: air vents Air vents
To ensure proper heating, cooling and ventilation in the vehicle interior, air
vents ⇒ Fig. 84 1
should remain open.
● Turn the corresponding thumbwheel (detail) in the required direction to
open and close the air vents. When the thumbwheel is in the  position, the
corresponding air vent is closed.
● Change the air direction using the ventilation grille lever. 

144Driving
Ignition lock
Starting the engine with the ignition key
Switch on the ignition with the key in the ignition and start
the engine.
Fig. 86 Ignition key po-
sitions
Steering wheel lock
– To lock the steering wheel, remove the key from the ignition and
turn the wheel until it locks. In vehicles with the automatic gear-
box*, the selector lever must be in the position P in order to re-
move the key.
– To unlock the steering wheel, insert the key into the ignition
and simultaneously turn the key (in the direction of the arrow)
and the steering wheel.
Warning: If the steering wheel cannot be turned, this is because
the steering wheel lock is activated. Switching the ignition on/off, preheating
–
Turn the ignition key to position 2
to switch on the ignition.
– Turn the ignition key to position 1
to switch off the ignition.
Preheating is produced in Diesel vehicles  when the ignition is
switched on.
Starting up the engine
– Manual gearbox: Press the clutch pedal all the way down and
move the gearbox lever into neutral.
– Automatic gearbox : Press the brake pedal and move the selec-
tor lever to position P or N.
– Turn the ignition key to position 3
. The key returns to position
2 automatically. Do not press the accelerator.
Diesel engines can take a few seconds longer than usual to start
on cold days. Therefore the clutch pedal (manual gearbox) or the
brake pedal (automatic gearbox) must remain pressed until the en-
gine starts up. During preheating, the warning lamp  remains lit.
The preheating time depends on the coolant and exterior tempera-
tures. When the engine is at operating temperature or at outside
temperatures above +8 °C (46 °F) the warning lamp  will only
light up for about one second. This means that the engine starts
immediately.
If the engine does not immediately start up, interrupt the starting process
and try again after 30 seconds. To start the engine again, return the key to
position 1
.


145
Driving
Start-Stop System*
If the vehicle is stopped and the Start-Stop system* switches off the engine,
the ignition remains switched on.
Automatic gearbox: Before leaving the vehicle, make sure that the ignition
is switched off and the selector lever is in position P.
Driver messages on the instrument panel display
Press the clutch This message appears on vehicles with a manual gearbox if the driver tries
to start the engine without having the clutch pedal pressed. The engine will
only start if you press the clutch pedal.
Press the brake
This message appears on vehicles with an automatic gearbox if the driver
tries to start the engine without having the brake pedal pressed.
Select N or P
This message appears if you try to start or stop the engine when the selec-
tor lever of the automatic gearbox is not in position P or N. The engine can
only start or stop in these positions.
Engage position P; the vehicle can move; doors can only close in position P. For safety reasons, this driver message appears and an audible warning
sounds if the selector lever of the automatic gearbox is not in position P af-
ter you switch off the ignition. Otherwise the vehicle could move.
Gear change: selector lever in the drive position! This driver message is displayed and a buzzer is sounded when the selector
lever is not in the position P when the driver door is opened. Put the selec-
tor lever in position P; otherwise the vehicle can roll away.
Ignition is switched onThis driver message is displayed and a buzzer is sounded when the driver
door is opened with the ignition switched on.
WARNING
● Never run the engine in confined spaces, as the exhaust gases are
poisonous.
● Never remove the key from the ignition if the vehicle is in motion.
Otherwise, the steering could suddenly lock, making it impossible to
steer the vehicle: risk of accident!
● Always take the key with you when you leave the vehicle. This is par-
ticularly important if there are children in the vehicle, as they might oth-
erwise be able to start the engine or use power-operated equipment (e.g.
the electric windows), which could cause injuries.
CAUTION
Avoid high engine speeds, full throttle and extreme load conditions until
the engine has reached its normal operating temperature, otherwise this
can damage the engine.
For the sake of the environment
Do not warm up the engine by running it with the car stationary. You should
drive off as soon as you start the engine. This will help avoid unnecessary
exhaust emissions.
Note
● If it is difficult to turn the ignition key to the position 1, turn the steer-
ing wheel to both sides to release the steering lock.
● When starting from cold, the engine may be a little noisy for the first few
seconds until oil pressure has built up in the hydraulic valve lifters. This is
quite normal, and no cause for concern.
● If the vehicle battery is disconnected and reconnected, the key must re-
main in the position 1
for around 5 seconds before starting up.
● Vehicles with automatic gearbox: After switching off the ignition, you
can only remove the ignition key if the selector lever is in position “P” (park-
ing lock). Next, the selector lever is locked. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

146Driving
Switching off the engine with the key
Switching off the engine
–Stop the vehicle.
– Turn the ignition key to position 0
.
Engaging the steering wheel lock
Important: selector lever (automatic gearbox*) must be in position
P.
– Remove the key from the ignition in position 1
⇒ Fig. 86 ⇒ .
– Turn the steering wheel until you hear it engage.
Possible vehicle theft is prevented with the steering lock engaged.
WARNING
● Never switch the engine off until the vehicle is stationary. The brake
servo and power steering functions will not be completely covered under
warranty. More force may also be needed to turn the steering wheel or to
brake. As you cannot steer and brake in the normal manner, there is a
greater risk of accidents and serious injury.
● Never remove the key from the ignition if the vehicle is in motion.
Otherwise, the steering could lock making it impossible to steer the vehi-
cle.
● Always take the ignition key with you whenever you leave the vehicle,
even temporarily. This is particularly important if there are children in
the vehicle, as they might otherwise be able to start the engine or use
power-operated equipment (e.g. the electric windows), which could
cause injuries.
CAUTION
If the engine has been running under high load for a long time, there is a
risk of heat building up in the engine compartment after the engine has
been switched off; this could cause engine damage. For this reason, you
should idle the engine for approx. 2 minutes before you switch it off.
Note
● After the engine is switched off the radiator fan may run on for up to 10
minutes, even if the ignition is switched off. It is also possible that the fan
turns itself on once more if the coolant temperature increases due to the
heat accumulated in the engine compartment or due to its prolonged expo-
sure to solar radiation.
● If the vehicle is stopped and the Start-Stop system* switches off the en-
gine, the ignition remains switched on. Make sure that the ignition is
switched off before leaving the vehicle, otherwise the battery could dis-
charge. 
Kick-down
The kick-down feature allows maximum acceleration to be
reached. If the eco*
⇒ page 172 mode has been selected in SEAT Drive Mode*, and
the accelerator is pressed beyond a hard point, the engine power is auto-
matically controlled to give your vehicle maximum acceleration.
WARNING
Please note that if the road surface is slippery or wet, the kick-down fea-
ture could cause the driving wheels to spin, which could result in skid-
ding.


148Driving
–Apply the handbrake.
– Select first gear.
– Switch the engine off and remove the key from the ignition. Turn
the steering wheel slightly to engage the steering lock.
– Always take you keys with you when you leave the vehicle ⇒ 
.
Additional notes on parking the vehicle on gradients:
Turn the steering wheel so that the vehicle rolls against the kerb if it started
to roll.
● If the vehicle is parked facing downhill, turn the front wheels so that
they point towards the kerb .
● If the vehicle is parked facing uphill, turn the front wheels so that they
point away from the kerb .
● Secure the vehicle as normal by applying the handbrake firmly and se-
lecting first gear.
WARNING
● Take measures to reduce the risk of injury when you leave your vehi-
cle unattended.
● Never park where the hot exhaust system could ignite inflammable
materials, such as dry grass, low bushes, spilt fuel etc.
● Never allow vehicle occupants to remain in the vehicle when it is
locked. They would be unable to open the vehicle from the inside, and
could become trapped in the vehicle in an emergency. In the event of an
emergency, locked doors will delay assistance to vehicle occupants.
● Never leave children alone in the vehicle. They could set the vehicle
in motion, for example, by releasing the handbrake or the gearbox lever.
● Depending on weather conditions, it may become extremely hot or
cold inside the vehicle. This can be fatal.
 Hill hold assist*
The Hill hold assist facilitates moving off when driving up-
hill.
Important: the driver door must be closed, the seat belt fastened and the
engine running.
The system is activated when you press and hold the brake pedal for a few
seconds.
To prevent the vehicle from rolling backwards when moving off, the brake
force will remain for a moment after releasing the brake pedal. This short
space of time is enough to start the vehicle with ease.
WARNING
● The smart technology included in the Hill hold assist cannot defy the
laws of physics. Do not let the extra convenience afforded by the Hill hold
assist tempt you into taking any risks when driving.
● The Hill hold assist cannot maintain the vehicle stationary on a slope
in all situations (e.g. on slippery or icy ground).
● If you do not start the vehicle immediately after taking your foot off
the brake pedal, the vehicle may start to roll back under certain circum-
stances. Depress the brake pedal or use the handbrake immediately.
● If the engine stalls, depress the brake pedal or use the handbrake im-
mediately.
● If you are moving off on a slope in stop-and-go traffic, press and hold
the brake pedal for a few seconds before driving off. This will prevent the
vehicle from rolling back unintentionally.
Note
The SEAT Official Service or a specialised workshop can tell you if your vehi-
cle is equipped with the Hill hold assist. 

149
Driving
Speed warning function
Introduction
The speed warning function can help prevent you exceeding
a particular pre-set maximum speed. The speed warning function will warn the driver if a pre-set maximum speed
is exceeded. The system gives a warning buzzer signal if the set speed is
exceeded by about 3 km/h (2 mph). The warning lamp  and the driver
message Speed limit exceeded! will be displayed simultaneously on the in-
strument panel display. The warning lamp  switches off when reducing
speed below the stored maximum limit.
You are recommended to store this speed limit warning if you always wish
to be reminded of a particular speed limit. This could be when driving in
countries with general speed limits, or if a particular speed should not be
exceeded when winter tyres are fitted etc.
Note
● Please bear in mind that, even with the speed warning function, it is still
important to keep an eye on the vehicle speed with the speedometer and to
observe the legal speed limits.
● The speed limit warning function in the version for several countries
warns you at a speed of 120 km/h (80 mph). This is a factory-set speed lim-
it. Setting speed limit warning
You can use the radio or the Easy Connect* to set, alter or
cancel the speed limit warning.
Vehicles with radio
– Select: SETUP
button > control button 
Driver assistant > Speed
warning.
Vehicles with Easy Connect
– Select: Systems control button or Vehicle systems > Driver assis-
tant > Speed warning.
The warning limit can be set from 30 to 240 km/h (20 to 150 mph). The ad-
justment is done in 10 km/h (mph) intervals. 
Start-Stop system*
Description and operation
The Start-Stop system helps save fuel and reduce CO 2 emissions.
In Start-Stop mode, the engine will automatically switch off when the vehi-
cle stops, when stopping at traffic lights for example. The ignition remains
switched on during the stopping phase. The engine automatically switches
back on when required.
As soon as the ignition is switched on, the Start-Stop function is automati-
cally activated. 
Safety FirstOperating instructionsPractical TipsTechnical specifications