2013 Seat Leon SC fuel cap

Driving and the environment . . . . . . . . . . . . . . . 230
Running in the engine . . . . . . . . . . . . . . . . . . . . . 230
Driving through flooded roads . . . . . . . . . . . . . . . 230
Installation of exhaust gas filtration systems . . . 230
Economic and ecological driving . . . . . . . . . . . . . 231
Environmental friendliness . . . . . . . . . . . . . . . . . 232
Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Trailer towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Retrofitting a towing bracket* . . . . . . . . . . . . . . . 236
Care and cleaning . . . . . . . . . . . . . . . . . . . . . . . . . 238
General information . . . . . . . . . . . . . . . . . . . . . . . 238
Care of vehicle exterior . . . . . . . . . . . . . . . . . . . . . 238
Care of the vehicle interior . . . . . . . . . . . . . . . . . . 242
Checking and refilling levels . . . . . . . . . . . . . . . 246
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Filling the tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Cooling system . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Windscreen washer reservoir and wiper blades . 262
Wheels and tyres . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Accessories and modifications to the vehicle 272
Accessories, replacement parts and repairs . . . . 272
Technical modifications . . . . . . . . . . . . . . . . . . . . 272
Radio transmitters and business equipment . . . 272
Emergencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
General information . . . . . . . . . . . . . . . . . . . . . . . 274
Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Tyre repair kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Changing a wheel . . . . . . . . . . . . . . . . . . . . . . . . . 277
Spare wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282 Jump starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283
Towing and tow-starting the vehicle . . . . . . . . . . 286
Fuses and bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Changing bulbs in headlight unit . . . . . . . . . . . . 295
Changing bulb for front fog light . . . . . . . . . . . . . 297
Changing tail light bulbs (on side panel) . . . . . . 299
Changing tail light bulbs (on rear lid) . . . . . . . . . 301
Changing number plate light bulbs. . . . . . . . . . . 303
Technical specifications . . . . . . . . . . . . 304
Technical specifications . . . . . . . . . . . . . . . . . . . . 304
Important . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Vehicle identification data . . . . . . . . . . . . . . . . . . 305
Information on fuel consumption . . . . . . . . . . . . 306
Towing a trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . 307
Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307
Engine specifications . . . . . . . . . . . . . . . . . . . . . . 309
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Filling capacities . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
4Table of Contents

67
Instruments and warning/control lamps
Trip recorder
Fig. 40 Instrument pan-
el: Odometer and reset
button
The distance covered is displayed in “kilometres” or miles “m”. It is possi-
ble to change the measurement units (kilometres “km”/miles “m”) in the
radio/Easy Connect*. Please refer to the Easy Connect* Instruction Manual
for more details.
Odometer/trip recorder
The odometer shows the total distance covered by the vehicle.
The trip recorder shows the distance that has been travelled since it was
last reset. It is used to measure short trips. The last digit of the trip recorder
indicates distances of 100 metres or tenths of a mile.
The trip recorder can be set to zero by pressing 0.0/SET

⇒  Fig. 40.
Fault display
If there is a fault in the instrument panel, the letters DEF will appear in the
trip recorder display. Have the fault repaired immediately, as far as is possi-
ble. Fuel level
The display
6 ⇒ Fig. 38 only works when the ignition is switched on. When
the display reaches the reserve mark, the lower diode lights up in red and
the control lamp  appears ⇒ page 248. When the fuel level is very low,
the lower diode flashes in red.
The distance to empty fuel level is displayed on the instrument panel 3
⇒ Fig. 38.
The capacity of the fuel tank of your vehicle is given in the Technical data
section ⇒ page 323.
In natural gas engines
The yellow warning lamp
 lights up when both fuel types (petrol and natu-
ral gas) have reached reserve level.
The green control lamp  comes on when the vehicle is working with natural
gas.
The green control lamp  switches off when the natural gas is exhausted.
The engine changes to operate with petrol.
Thing to note: If the vehicle is left parked for a long time immediately after
refuelling, the natural gas level indicator may not accurately indicate the
same level shown after refuelling when the vehicle is started up again. This
is not due to a leak in the system, but to a drop in pressure in the gas tank
for technical reasons after a cooling phase immediately after refuelling.
CAUTION
Never run the fuel tank completely dry. An irregular fuel supply could cause
misfiring. In this way the unburned fuel can reach the exhaust system,
which could cause the catalytic converter to overheat resulting in damage. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

232Driving and the environment
Reduce idling time
In vehicles with the Start-Stop system idling is automatically reduced. In ve-
hicles without the Start-Stop system it is worth switching off the engine, for
example, at level crossings and at traffic lights that remain red for long peri-
ods of time. When an engine has reached operating temperature, and de-
pending on the cylinder capacity, keeping it switched off for a minimum of
about 5 seconds already saves more than the amount of fuel necessary for
restarting.
The engine takes a long time to warm up when it is idling. 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.
Regular maintenance
Regular servicing helps in saving fuel even before the engine is started. 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
The engine and catalytic converter need to reach their optimal operating
temperature in order to minimise fuel consumption and emissions.
A cold engine consumes a disproportionate amount of fuel. The engine only
reaches its working temperature after about four kilometres (2.5 miles),
when fuel consumption will return to a normal level.
Check tyre pressure
Always make sure the tyres are inflated to the correct pressures
⇒ page 265 to save fuel. If the pressure is below half bar, fuel consumption
may increase by 5%. Due to the greater rolling resistance, under-inflation
also increases tyre wear and impairs handling.
Do not use winter tyres all year round as they increase fuel consumption by
up to 10%. Avoid carrying unnecessary loads
Given that every kilo of
extra weight will increase the fuel consumption, it is
advisable to always check the luggage compartment to make sure that no
unnecessary loads are being transported.
Since the luggage rack increases the aerodynamic drag of the vehicle, you
should remove it when not needed. This will save, at a speed of 100-120
km/h (60-75 mph), approximately 12% of fuel.
Save electrical energy
The engine drives the alternator, thereby generating electricity. This implies
that any increase in power consumption also increases fuel consumption!
For this reason, switch off any unneeded consumption of electricity. Electri-
cal equipment which uses a lot of electricity includes the blower (at a high
setting), the rear window heating and the seat heating*. 
Environmental friendliness
Environmental protection is a top priority in the design, choice of materials
and manufacture of your new SEAT.
Constructive measures to encourage recycling
● Joints and connections designed for easy dismantling
● Modular construction to facilitate dismantling
● Increased use of single-grade materials.
● Plastic parts and elastomers are marked in accordance with ISO 1043,
ISO 11469 and ISO 1629.
Choice of materials
● Use of recycled materials.
● Use of compatible plastics in the same part if its components are not
easily separated. 

248Checking and refilling levels
The engine management automatically adapts to the natural gas used ac-
cording to its quality. Therefore, different quality gases can be mixed in the
tank, without the need for comprehensive draining before applying a differ-
ent quality gas.
The instrument panel display shows information on the current natural gas
quality ⇒ page 73.
Natural gas and safety
If you can smell gas or suspect that there is a leak ⇒ 
:
● Stop the vehicle immediately.
● Switch the ignition off.
● Open the doors to appropriately ventilate the vehicle.
● Extinguish cigarettes immediately.
● Move away from the vehicle or switch off objects that may cause sparks
or a fire.
● If you continue to smell gas, do not continue driving!
● Seek specialist assistance. Have the fault repaired.
WARNING
Failure to act when you can smell gas in the vehicle or when refuelling
can cause serious injuries.
● Carry out the necessary operations.
● Leave the danger zone.
● If necessary, warn the emergency services.
WARNING
The vehicle is not prepared to use liquefied natural gas (LNG) and this
fuel must not be added under any circumstances. Liquefied natural gas
can cause the natural gas tank to explode resulting in serious injury.
Note
Have natural gas system checked regularly by a specialised workshop in ac-
cordance with the Maintenance Programme. 
Filling the tank Filling the tank
Fig. 151 Fuel tank flap
with tank cap attached
The flap that covers the tank cap is unlocked and locked automati-
cally by the central locking.
Opening the fuel tank cap
– Open the fuel tank flap, by pressing on the left side.
– Unscrew the fuel tank cap anti-clockwise. 

249
Checking and refilling levels
– Place the cap in the housing on the hinge of the open flap
⇒ Fig. 151.
Closing the fuel tank cap
– Screw on the tank cap clockwise until it you hear it click into po-
sition.
– Close the tank flap. Make sure you hear it click into place.
If the automatic filler nozzle is operated correctly, it will switch itself off as
soon as the fuel tank is “full”. Do not try to put in more fuel after the nozzle
cuts out, as this will fill the expansion chamber in the fuel tank.
The correct fuel grade for your vehicle is given on a sticker on the inside of
the fuel tank flap. Further notes on fuel can be found at ⇒ page 246.
The capacity of the fuel tank is listed in the vehicle technical specifications
⇒ page 323.
WARNING
Fuel is highly flammable and can cause serious burns and other injuries.
● Do not smoke when filling the fuel tank or a canister. Naked flames
are forbidden in the vicinity due to the risk of explosion.
● Observe legislation governing the use, storage and carrying of a
spare fuel canister in the vehicle.
WARNING (Continued)
● For safety reasons we do not recommend carrying a spare fuel canis-
ter in the vehicle. In an accident the canister could be damaged and could
leak.
● If, in exceptional circumstances, you have to carry a spare fuel canis-
ter, please observe the following points:
–Never fill fuel into the spare fuel canister if it is inside or on top of
the vehicle. An electrostatic charge could build up during filling, caus-
ing the fuel vapour to ignite. Danger of explosion. Always place the
canister on the ground to fill it.
– Insert the filling nozzle as far as possible into the spare fuel canis-
ter.
– If the spare fuel canister is made of metal, the filling nozzle must
be in contact with the canister during filling. This helps prevent an
electrostatic charge building up.
– Never spill fuel in the vehicle or in the luggage compartment. Fuel
vapour is explosive. Risk of fatal accident!
CAUTION
● If any fuel is spilt onto the vehicle, it should be removed immediately. It
could otherwise damage the paintwork.
● Never run the tank completely dry. An irregular fuel supply could cause
misfiring. As a result, unburnt fuel could enter the exhaust system and dam-
age the catalytic converter.
● When filling the fuel tank after having run it completely dry on a vehicle
with a diesel engine , the ignition must be switched on for at least 30 sec-
onds before starting the engine. When you then start the engine it may take
longer than normal (up to one minute) for the engine to start firing. This is
because air needs to be bled from the fuel system while starting. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

250Checking and refilling levels
For the sake of the environment
Do not overfill the fuel tank – it may cause the fuel to overflow if it becomes
warm.
Note
Diesel vehicles are fitted with a protective device that prevents the insertion
of the wrong fuel hose 1)
. It is only possible to refuel with Diesel nozzles.
● If the pump nozzle is worn, damaged, or if it is very small, it is possible
that it will not be able to open the protective device. Before trying to insert
the pump nozzle by turning it, try a different pump or request specialist
help.
● If you fill the tank from a reserve fuel canister, the protective device will
not open. One way to resolve this is to pour the fuel in very slowly. 
Refuelling natural gas
Fig. 152 Tank flap open:
gas filler mouth 1, filler
mouth retainer 2
Before refuelling, the engine and the ignition, mobile telephone and heat-
ing must be switched off separately
⇒ .
Read the instructions on how to use the natural gas pump carefully.
The vehicle is not prepared for refuelling with liquefied natural gas (LNG)
⇒ 
. Before refuelling with natural gas, make sure to add the appropriate
type of fuel ⇒ page 246.
Opening the fuel tank cap
The natural gas filler mouth is behind the fuel tank cap, next to the petrol
filler mouth.
● Unlock the vehicle with the key or with the central locking button 
situ-
ated on the driver door ⇒ page 87.
● Press on the rear area of the flap and open it.
Refuelling
Thing to note: if the ambient temperature is very high, the natural gas pump
protection against overheating may disconnect this automatically.
● Remove the plug from the gas filler mouth ⇒ Fig. 152 1
.
● Connect the pump filling nozzle to the gas filler mouth.
● The fuel tank will be full when the pump compressor automatically cuts
the supply.
● If you wish to finish refuelling in advance, press the button on the pump
to stop the flow.
Closing the fuel tank cap
● Check that the gas filler mouth retainer 2
is not trapped with the filler
nozzle. If necessary, place it in the filler mouth again.
● Insert the plug in the filler mouth.
● Close the tank flap. Make sure you hear it click into place. 
1)
according to the country

251
Checking and refilling levels
WARNING
Natural gas is a highly explosive, easily flammable substance. Incorrect
handling of the natural gas can cause accidents serious burns and other
injuries.
● Before refuelling with natural gas, engage the filler neck correctly. If
you smell gas, stop refuelling immediately.
WARNING
The vehicle is not prepared to use liquefied natural gas (LNG) and this
fuel must not be added under any circumstances. Liquefied natural gas
can cause the natural gas tank to explode resulting in serious injury.
Note
● The filling nozzles of all natural gas pumps might not be operated in the
same way. If you do not know, ask a qualified employee at the petrol station
to do the refuelling.
● Noises heard when refuelling are normal and do not indicate the pres-
ence of damage to the system.
● The vehicle natural gas system is prepared both for refuelling with a
small compressor (slow refuel) and a large compressor (fast refuel) in natu-
ral gas service stations. Bonnet
Working on components in the engine compartment
Extra caution is necessary when working on components in
the engine compartment. Always be aware of the danger of injury and scalding as well as the risk of
accident or even fire when working in the engine compartment (e.g. when
checking and refilling fluids). Always observe the warnings listed below
and follow all general safety precautions. The engine compartment of the
vehicle is a potentially hazardous area ⇒ 
.
WARNING
● Switch the ignition off.
● Remove the ignition key.
● Apply the handbrake.
● If the vehicle has a manual gearbox, place the lever in neutral; if it
has an automatic gearbox, place the selector lever in position P.
● Wait for the engine to cool down.
● Keep children away from the engine compartment.
● Never spill liquids used for vehicle operation on the engine compart-
ment, as these may catch fire (e.g. the antifreeze in coolant).
● Take care not to cause short circuits in the electrical system, especial-
ly when working on the battery.
● If working inside the engine compartment, remember that, even when
the ignition is switched off, the radiator fan may start up automatically,
and therefore there is a risk of injury.
● Do not unscrew the cap on the coolant expansion tank when the en-
gine is hot. The cooling system is under pressure. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

252Checking and refilling levels
WARNING (Continued)
● Protect face, hands and arms by covering the cap with a large, thick
rag to protect against escaping coolant and steam.
● If it is necessary to work in the engine compartment while the engine
is running, the rotating components (for example, poly-V belt, alternator,
radiator fan) and the high voltage ignition system are an additional haz-
ard.
● Observe the following additional warnings if work on the fuel system
or the electrical system is necessary:
–Always disconnect the battery from the on-board network.
– Do not smoke.
– Never work near naked flames.
– Always keep an approved fire extinguisher immediately available.
CAUTION
When changing or topping up service fluids, make absolutely certain that
you fill the fluids into the correct reservoirs. Using the wrong fluids could
cause serious malfunctions and engine damage!
For the sake of the environment
Inspect the ground underneath your vehicle regularly so that any leaks are
detected at an early stage. If you find spots of oil or other fluids, have your
vehicle inspected at the workshop.
Note
On right-hand drive vehicles* some of the containers/reservoirs mentioned
below are located on the other side of the engine compartment. Opening the bonnet
The bonnet is released from inside the vehicle.
Fig. 153 Release lever in driver footwell and cam below the bonnet
Check that the windscreen wiper arms are not unfolded. Otherwise
the paint may be damaged.
The bonnet can only be unlocked when the driver door is open.
– Pull the lever under the dash panel in the direction of the arrow
1
⇒ Fig. 153.
– Lift the bonnet slightly ⇒ 
.
– Press the release catch under the bonnet upwards ⇒ Fig. 153
2
. This will release the arrester hook under the bonnet.
– Open the bonnet. Release the bonnet stay and secure it in fix-
ture designed for this in the bonnet. 