2008 Seat Leon 5D fuel

Lights and visibility125
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
2. Turn the rotary knob to position the mirror so that you have a
good view to the rear of the vehicle.
3. Turn knob to position R (right exterior mirror).
4. Swivel the rotary knob to posi tion the mirror so that you have a
good view to the rear of the car ⇒.
Heating the exterior mirrors*
– Turn the knob forwards to the central position ⇒fig. 86 so
that the heated rear view mirrors warm up and the heated wind-
screen* in the wiper blade rest area is activated ⇒page 120.
– The wing mirror heating is not activated in temperatures above approximately 20°C.
Folding in exterior mirrors*
–Turn the control ⇒ fig. 86 to position
 to fold in the exterior
mirrors. You should always fold in the exterior mirrors if you are
driving through an automatic car wash. This will help prevent
damage.
Folding rear view mirrors with convenience control*
– The outer rear view mirror will fold back automatically with convenience closing (with the remote or the key)
– To unfold it again, open the door and use the contact.
Folding exterior mirrors back out to the extended position*
– Turn the knob to another position to fold the exterior mirrors back
out ⇒ . Synchronised mirror adjustment
1. Turn the control to the position
L (left exterior mirror ).
2. Turn the rotary knob to position the mirror so that you have a good view to the rear of the vehicle. The right exterior mirror will
be adjusted at the same time (synchronised).
WARNING
•
The rear view convex or aspheric mirror increase the field of vision
however the objects appear smaller and further away in the mirrors. If you
use these mirrors to estimate the distance to vehicles behind you when
changing lane, you could make a mistake. Risk of accident.
•
If possible, use the interior mirror to estimate distances to vehicles
behind you.
•
Make sure that you do not get your finger trapped between the mirror
and the mirror base when folding back the mirrors. Risk of injury!For the sake of the environment
The exterior mirror heating should be switched off when it is no longer
needed. Otherwise, it is an unnecessary fuel waste.
Note
•
If the electrical adjustment ever fails to operate, the mirrors can be
adjusted by hand by lightly pressing the edge of the mirror glass.
•
In vehicles with electric wing mirrors, the following points should be
observed: if, due to an external force (e.g. a knock while manoeuvring), the
adjustment of the mirror housing is altered, the mirror will have to be
completely folded electrically. Do not readjust the mirror housing by hand, as
this will interfere with the mirror adjuster function.
A1
leon_ingles Seite 125 Montag, 26. Januar 2009 4:29 16

Heating, Ventilation and Air conditioning
152When the button is off (LED off), the heating, ventilation and air condi-
tioning system is off.
When the button is off, the heat ing, 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 151, 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 stro ng 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 th
e air from outside.
With high ambient temperatures, the ai r 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 syst em 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 wo rk 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
leon_ingles Seite 152 Montag, 26. Januar 2009 4:29 16

Driving
158If the engine does not start immediately, switch the starter off after
10 seconds and try again after half a minute . If the engine still does not start,
the fuel pump fuse should be checked ⇒page 239, “Fuses”.
WARNING
•
Never start or run the engine in un ventilated or closed rooms. The
exhaust fumes contain carbon mono xide, an odourless and colourless
poisonous gas. Risk of fatal accidents. Carbon monoxide can cause loss of
consciousness. It can also cause 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 av oid 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 th e 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 batte ry of another vehicle. Note and follow
the instructions ⇒page 253, “Jump-starting”.For the sake of the environment
Do not warm-up the engine by running th e engine with the vehicle stationary.
You should drive off as soon as you start the engine. This helps the engine
reach operating temperature faster and reduces emissions.
Starting diesel engines
The engine can only be started using a genuine SEAT key with
its correct code.– Move the gear lever to the ne utral position and depress the
clutch pedal thoroughly and hold it in this position for the starter
to turn the engine on.
– Turn the ignition key to the starting position.
– Turn the ignition key to position ⇒page 156, fig. 118 . The
indication lamp

will light for engine pre-heating.
– When the warning lamp turns off, turn the key to position to start the engine. Do not press the accelerator.
– Let go of the ignition key as soon as the engine starts, the starter 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
seconds 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 ⇒page 253.
Glow plug system for the diesel engine
To avoid unnecessary discharging of th e battery, do not use any other major
electrical equipment while th e glow plugs are pre-heating.
Start the engine as soon as the glow plug warning lamp ⇒page 76 goes out.
Starting the engine after the fuel tank has been completely run dry
If the fuel tank has been completely ru n dry, it may take longer than normal
(up to one minute) to start the engine after refuelling with diesel fuel. This is
because the system must eliminate air first.
A1A2
leon_ingles Seite 158 Montag, 26. Januar 2009 4:29 16

Driving159
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
WARNING
•
Never start or run the engine in unventilated or closed rooms. The
exhaust fumes contain carbon monoxide, an odourless and colourless
poisonous gas. Risk of fatal accidents. Carbon monoxide can cause loss of
consciousness. It can also cause 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 avo id high engine speeds, driving at
full throttle and over-loading th e 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 follow
the instructions ⇒page 253, “Jump-starting”.For the sake of the environment
Do not warm-up the engine by running the engine with the vehicle stationary.
You should drive off as soon as you star t the engine. This helps the engine
reach operating temperature faster and reduces emissions.Switching the engine off– Stop the engine.
– Turn the ignition key to position ⇒page 156, fig. 118 .
After switching the engine off, the ra diator fan may run on for up to 10
minutes. 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 compart-
ment or due to its prolonged exposure to solar radiation.
WARNING
•
Never switch the engine off until the vehicle is completely stationary.
•
The brake servo works only when the engine is running. With the
engine switched off, more strength is needed to brake. As normal brake
operation cannot be performed, risk of accidents and serious injury may
exist.
•
The steering lock can be immediately blocked once the key is removed
from the ignition lock. The vehicle cannot be steered. Risk of accident.Caution
If the engine has been driven hard for a long period, the engine could over-
heat when it is switched off. Risk of engine damage. Fo r this reason, you
should idle the engine for approx. 2 minutes before you switch it off.
A0
leon_ingles Seite 159 Montag, 26. Januar 2009 4:29 16

Driving167
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
•
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 re main 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 occupants.
•
Never leave children alone in the vehi cle. They could set the vehicle in
motion, for example, by releasing the handbrake or the gear lever /
selector lever.
•
Depending on weather conditions, it may become extremely hot or cold
inside the vehicle. This can be fatal.
Starting on an uphill*
This function is only included in vehicles fitted with ESP.This device helps when starting uphill.
These are the basic operation conditions: doors closed, brake pedal pressed
down and vehicle in neutral. The system gets activated on engaging gear.
This system also works when reversing uphill.
After removing your foot from the brake pedal, the braking force is maintained
for a few seconds to prevent the vehicle from moving backward when put into
gear. This short space of time is enough to start the vehicle with ease.
This system also works when reversing uphill.
WARNING
•
If you do not start the vehicle immedi ately after taking your foot off the
brake pedal, the vehicle may start to roll back under certain conditions.
Depress the brake pedal or use the hand brake immediately.
•
If the engine stalls, depress the brake pedal or use the hand brake
immediately.
•
When following a line of traffic uphill, if you want to prevent the vehicle
from rolling back accidentally when starting off, hold the brake pedal down
for a few seconds before starting off.Note
The Official Service or a specialist workshop can tell you if your vehicle is
equipped with this system.Acoustic parking aid system*General notesVarious systems are available to help you when parking or manoeuvring in
tight spaces, dependi ng on the equipment fitted on your vehicle.
The SEAT parking system* gives an acoustic warning if there are any obsta-
cles behind your car.
When you are parking, the SEAT parking system* plus warns you acoustically
and optically
19) about obstacles “in front of” and “behind” the vehicle.
WARNING (continued)
19)Vehicles with a navigation system.
leon_ingles Seite 167 Montag, 26. Januar 2009 4:29 16

Driving and the environment183
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
your vehicle has automatic transmission). This makes use of engine
braking and relieves the brakes.
•
Never let the brakes “slip” 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.
•
Very heavy use of the brakes may cause a vapour lock if the brake fluid
is left in the system for too long. This impairs the braking effect.
•
Non-standard or damaged front spoilers could restrict the airflow to the
brakes and cause them to overheat. Observe the relevant instructions
before purchasing accessories ⇒page 200, “Technical modifications”.
•
If a brake circuit fails, the braking distance will be increased consider-
ably. Contact a qualified workshop immediately and avoid unnecessary
journeys.
Exhaust gas purification systemCatalytic converter*To conserve the useful life of the catalytic converter
– Always use unleaded petrol.
– Do not let the fuel get too low in the tank.
– For engine oil changes, do not top the reservoir up ⇒page 210,
“Topping up engine oil ”. – Never tow the vehicle to start it, use jump leads if necessary
⇒page 253.
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 qualified workshop. In general, the exhaust warning lamp will light
up when any of the described symptoms occur ⇒page 73. If this happens,
unburnt fuel can enter the exhaust system and escape into the environment.
The catalytic converter can also be damaged by overheating.
WARNING
The catalytic converter reaches very high temperatures! Fire hazard!•
Never park where the catalytic converter could come into contact with
dry grass or inflammable materials under the vehicle.
•
Do not apply additional underseal or anti-corrosion coatings to the
exhaust pipes, catalytic converter or the heat shields on the exhaust
system. These materials could catch fire when the vehicle is being driven.Caution
Never fully drain the fuel tank because the irregularity of the fuel supply may
cause ignition problems. This allows unburnt fuel to enter the exhaust
system, which could cause overheating and damage the catalytic converter.
For the sake of the environment
Even when the emission control system is working perfectly, there may be a
smell of sulphur from the exhaust unde r some conditions. This depends on
the sulphur content of the fuel used. Quite often the problem can be solved
by changing to another fuel brand.
WARNING (continued)
leon_ingles Seite 183 Montag, 26. Januar 2009 4:29 16

Driving and the environment
184Diesel engine particulate filter*
The diesel engine particulate filter eliminates soot produced
by burning diesel.The diesel engine dust filter eliminates most of the soot from the exhaust gas
system. Under normal driving conditions, the filter cleans itself. If the driving
conditions do not allow the filter to cle an itself (for example, multiple short
trips) the filter will be obstructed by dust and pollen and the indicator
 for
the diesel engine particulate filter indicator will light up. See section on
Warning Lights.
WARNING
•
The diesel engine particulate filter may reach extremely high tempera-
tures; it should not enter into cont act with flammable materials under-
neath the vehicle. Failure to comply could result in fire.Caution
•
The vehicle is not designed for refuel ling with mixtures of FAME fuel
(biodiesel) over 7% in accordance with DIN 51628. The diesel particle filter is
damaged when this mixture percentage is exceeded.
Economical and environmentally friendly
drivingEconomical and environmentally friendly drivingFuel consumption, environmental pollut ion and wear to the engine, brakes
and tyres depends in large part on your driving style. By adopting an econom-
ical driving style and anticipating the traffic situation ahead, you can easily
reduce fuel consumption by 10-15%. Some tips on how to help you reduce
pollution while saving money are listed below.
As you drive try to anticipate the traffic situation
A vehicle uses most fuel when accele rating. When you anticipate the situa-
tion, you have to brake less often and, thus, accelerate less. If it is possible,
let the vehicle roll with a gear engaged, for example, if you see a red light
ahead. The braking effect achieved in this way helps to reduce the wear of
brakes and tyres; emissions and fuel consumption are reduced to zero
(disconnection due to inertia).
Change gear early to save energy
An effective way of saving fuel is to change up quickly through the gears.
Running the engine at high rpm in the lower gears uses an unnecessary
amount of fuel.
Manual gearbox: Change from first to second gear as quickly as possible. We
recommend that, whenever possible, you change to a higher gear upon
reaching 2,000 rpm.
Automatic gearbox: Accelerate in moderation and avoid the “kick-down” (full
throttle) position.
leon_ingles Seite 184 Montag, 26. Januar 2009 4:29 16

Driving and the environment185
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
Avoid driving at high speed
We advise you not to drive at the top speed permitted by the vehicle. Fuel
consumption, exhaust emissions and noise levels all increase very rapidly at
higher speeds. Driving at moderate speeds will help to save fuel.
Avoid idling
It is worthwhile switching off the engine when waiting in a traffic jam, at level
crossings or at traffic lights with a long red phase. The fuel saved after only
30 - 40 seconds is greater than the amount of fuel needed to restart the
engine.
The engine takes a very long time to wa
rm up when it is running at idling
speed. Mechanical wear and pollutant emissions are also especially high
during this initial warm-up phase. It is therefore best to drive off immediately
after starting the engine. Avoid running the engine at high speed.
Periodic maintenance
Periodic maintenance work guarantees that, before beginning a journey, you
will not consume more than the required amount of fuel. A well-serviced
engine gives you the benefit of improved fuel efficiency as well as maximum
reliability and an enhanced resale value.
A badly serviced engine can consume up to 10% more fuel than necessary.
Avoid short journeys
To reduce the consumption and emission of polluting gases, the engine and
the exhaust filtration systems should reach the optimum service tempera-
ture .
With the engine cold, fuel consumption is proportionally higher. The engine
does not warm up and fuel consumption does not regularise until having
driven some four kilometres. This is the reason why we recommend avoiding
short trips wherever possible.
Maintain the correct tyre pressures
Bear in mind that keeping the tyres at an adequate pressure saves fuel. If the
tyre pressures are just 1 bar too low, this can put the fuel consumption up by as much as 5 %. Due to the greater rolling resistance, under-inflation also
increases tyre wear
and impairs handling.
The tyre pressures should always be checked when the tyres are cold.
Do not use winter tyres all through the year: they will increase fuel consump-
tion by up to 10 %.
Avoid unnecessary weight
Every kilo of extra weight will put up the fuel consumption, so it is worth
checking the luggage compartment occasionally to make sure that no unnec-
essary loads are being transported.
A roof carrier is often left in place for the sake of convenience, even when it is
no longer needed. At a speed of 100- 120 km/h your car will use about 12%
more fuel as a result of the extra wind resistance caused by the roof carrier
even when it is not in use.
Saving electrical energy
The engine activates the alternator, whic h produces electricity. With the need
for electricity, fuel consumption is also increased. Because of this, always
turn off electrical equipme nt when you do not need them. Examples of equip-
ment that use a lot of electricity are: the fan at high speeds, the rear window
heating or the seat heaters*.
Environmental friendlinessEnvironmental protection is a top priori ty in the design, choice of materials
and production of your new Seat.
Design measures for economical recycling•
Joints and connections designed for ease of dismantling
•
Modular construction to facilitate dismantling
•
Increased use of single-grade materials
leon_ingles Seite 185 Montag, 26. Januar 2009 4:29 16