engine Seat Leon SC 2015 User Guide

The essentials
  Do not continue driving!
Engine oil pressure too low. If
the warning lamp flashes, stop
driving, even if the oil level is
correct. Do not even run the en-
gine at idle speed!
››› page
248 
Fault in the battery.›››
page
253 
Driving light totally or partially
faulty.›››
page
94
Fault in the cornering light sys-
tem.››› page
128 
Diesel particulate filter blocked›››
page
176 
Level of windscreen washer fluid
too low.›››
page
136 
Flashing: Fault in the oil level de-
tection. Control manually.›››
page
248
Ignition: Insufficient engine oil. 
Fault in the gearbox.›››
page
174 
Light Assist on.›››
page
130 
Immobiliser active.

Service interval display›››
page
38 
Mobile telephone is connected
via Bluetooth to the original tele-
phone device.›››
Book-
let Radio
or
››› Book-
let Navi-
gation
system 
Mobile telephone battery charge
meter. Available only for devices
pre-installed in factory.

Freezing warning. The outside
temperature is lower than +4°C
(+39°F).›››
page
33 
Start-Stop system activated.›››
page
183 
Start-Stop system unavailable.

Low consumption driving status›››
page
32 On the instrument panel
Fig. 52
See position on page 9-10 

Front passenger front airbag is
disabled (  
 ).
››› page
77 

The front passenger front airbag
is activated (  
 ).
››› page
77 
››› in Warning and indication lamps on
page 109
››› page 108 Gearbox lever
M anua
l

gearbox Fig. 53
Gear shift pattern of a 5 or 6-speed
m anual
g

earbox The position of the gears is indicated on the
g
e
arbo

x lever ››› Fig. 53. » 43

The essentials
To switch a specific function on, press the ap-
pr opri
at
e button. Press the button again to
switch off the function. The LED on each control lights up to indicate
that the r
espective function of a control has
been switched on.
1TemperatureThe left and right sides can be adjusted separately: Turn the control to adjust the temperature
2FanThe power of the fan is automatically adjusted. The fan is also adjusted manually by turning the control.
3Air distributionThe airflow adjusts automatically for comfort. You can also switch it on manually using the buttons 3.
4Indications on the temperature display screen selected for the right and left sides.

Defrost functionThe air drawn in from outside the vehicle is directed at the windscreen and air recirculation is automatically switched off. To defrost the wind-
screen more quickly, the air is dehumidified at temperatures over approximately +3°C (+38°F) and the fan runs at maximum output. 
The air is directed at the chest of driver and passengers by the dash panel air vents.

Air distribution towards the footwell.

Upward air distribution.

Heated rear window: this only works when the engine is running and switches off automatically after a maximum of 10 minutes.

Air recirculation
 
Seat heating buttons

Press the button to switch on or off the cooling system.

Press the button to make maximum cooling capacity available. The recirculation of air and the cooling system turn on automatically and air distri-
bution adjusts automatically to the position .

When the warning light for button  lights up, the settings on the driver side also apply to the passenger side. Press the button or the temper-
ature control on the passenger side 46

The essentials1TemperatureTurn the control to adjust the temperature
2FanSetting 0: blower and manual air conditioning switched off
Level 6: maximum fan level.
3Air distributionRotate the continuous control to direct the airflow to the desired area.

Defrost functionThe airflow is directed at the windscreen. Air recirculation is automatically switched off or is not switched on. Increase the fan power to clear the
windscreen 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 running and switches off automatically after a maximum of 10 minutes.

Air recirculation


Seat heating buttons 
Maximum cooling power. The recirculation of air and the cooling system turn on automatically and air distribution adjusts automatically to the
position 

››› in Introduction on page 160
›››
page 159 48

The essentials
Air distribution towards the footwell.

Air distribution towards the windscreen and the footwell.

Heated rear window: this only works when the engine is running and switches off automatically after a maximum of 10 minutes

Air recirculation
››› page 163  
Seat heating buttons

››› in Introduction on page 160
›››
page 159 50

The essentials
Level control Fi l
lin
g capacities
Tank level
Petrol and diesel
engines50 l, of which, approx. 7 l reserveVehicles with all-wheel-drive :
55 l, of which, approx. 8.5 l re- serve
Natural gas en-
ginea)approx. 15 kg
a)
The capacity depends on the efficacy and characteristics of
the natural gas pumps. The capacity indicated is based on a
minimum loading pressure of 200 bar.
Capacity of the windscreen washer fluid container
Versions without
headlight washer
systemapprox. 3 litres
Versions with
headlight washer
systemapprox. 5 litres Fuel
Fig. 59
Fuel tank flap with tank cap attached. The flap that covers the tank cap is unlocked
and loc
k
ed aut

omatically using the central
locking.
Opening the fuel tank cap
● Open the fuel tank flap by pressing on the
left
side.
● Unscrew the cap by turning it to the left.
● Place it in the space on the hinge of the
open flap ››

› Fig. 59.
Closing the fuel tank cap
● Unscrew the cap by turning it to the right as
far as
it will go.
● Close the lid. 
››› in Filling up on page 241
›››
page 241 Oil
Fig. 60
Engine oil dipstick. Fig. 61
In the engine compartment: Engine
oi l
fi

ller cap » 51

The essentials
The level is measured using the dipstick loca-
t ed in the en
gine c
ompartment
›››  page 246.
The oil should leave a mark between zones A and
C . It should never exceed zone
A .
● Zone A : Do not add oil.
● Zone B : You can add oil but keep the level
in th at


zone.
● Zone C : Add oil up to zone
B .
T op
pin

g up engine oil
● Unscrew cap from oil filler opening.
● Add oil slowly.
● At the same time, check the level to ensure
you do not a
dd too much.
● When the oil level reaches at least zone B ,
u n
s

crew the engine oil filler cap carefully.
Oil properties
Engine typeSpecification
Petrol without flexible
service intervalVW 502 00/VW 504 00
Petrol with flexible serv-
ice interval (LongLife)VW 504 00
Diesel. Engines without
Particulate filter (DPF)VW 505 01/VW 506 01/VW
507 00
Engine typeSpecification
Diesel. Particulate Filter
Engines (DPF).
With or without flexible
service interval (with
and without LongLife) a)VW 507 00
Natural gas enginesVW 502 00
a)
Only use recommended oils, otherwise you may damage the
engine.
Engine oil additives
No type of additive should be mixed with the
engine oil. The deterioration caused by these
additives is not covered by the warranty.

››› in Changing engine oil on page 250
››› page 248 Coolant
Fig. 62
Engine compartment: coolant expan-
s ion t
ank

cap. The coolant tank is located in the engine
c
omp
ar

tment ›››
 page 246.
When the engine is cold, replace the coolant
when the level is below .
Coolant specifications
The engine cooling system is supplied from
the factory with a specially treated mixture of
water and at least 40 % of the additive G13
(TL-VW 774 J), purple. This mixture gives the
necessary frost protection down to -25°C
(-13°F) and protects the light alloy parts of
the engine cooling system against corrosion.
It also prevents scaling and considerably rai-
ses the boiling point of the coolant.
To protect the cooling system, the percentage
of additive must always be at least 40 %, 52

The essentials
even in warm climates where anti-freeze pro-
t ection i
s
not required.
If for weather reasons further protection is
necessary, the proportion of additive may be
increased, but only up to 60 %; otherwise an-
tifreeze protection will diminish and this will
worsen cooling.
When the coolant is topped up, use a mixture
of distilled water and at least 40 % of the
G13 or G12 plus-plus (TL-VW 774 G) additive
(both are purple) to obtain an optimum anti-
corrosion protection ››› in Topping up cool-
ant on p ag
e 251

. The mixture of G13 with
G12 plus (TL-VW 774 F), G12 (red) or G11
(green-blue) engine coolants will significant-
ly reduce anti-corrosion protection and
should therefore be avoided ››› in Topping
up c oo
l

ant on page 251.

››› in Topping up coolant on page 251
››› page 250 Brake fluid
Fig. 63
Engine compartment: brake fluid res-
er v
oir c

ap The brake fluid reservoir is located in the en-
gine c
omp
ar

tment ›››
 page 246.
The level should be between the  and 
marks. If it is below , please visit a Techni-
cal Service.

››› in Topping up brake fluid on
page 252
››› page 251 Windscreen washer
Fig. 64
In the engine compartment: wind-
s c
r

een washer reservoir top. The windscreen washer reservoir is located in
the en
gine c
omp

artment ›››
 page 246.
To top up, mix water with a product recom-
mended by SEAT.
In cold temperatures, add anti-freeze.

››› in Checking and topping up the
windscreen washer reservoir on
page 252
››› page 252 Battery
The battery is located in the engine compart-
ment
›
›

›  page 246. It does not require » 53

The essentials
Emergencies F u
se
s
Fuse location Fig. 65
On the driver-side dash panel: fuse
bo x
c

over Fig. 66
In the engine compartment: fuse box
c o
v

er Underneath the instrument panel
The f
use bo

x is located behind the storage
compartment ››› Fig. 65.
In the engine compartment
Press the locking tabs to release the fuse box
cover ››› Fig. 66.
Identifying fuses situated below the dash
panel by colours
ColourAmp rating
Black1
Purple3
Light brown5
Brown7.5
Red10
Blue15
Yellow20
White or transparent25
Green30
Orange40 
››› in Introduction on page 91
›››
page 91 Replacing a blown fuse
Fig. 67
Image of a blown fuse Preparation
● Switch off the ignition, lights and all elec-
tric al
equipment

.
● Open the corresponding fuse box
›››
 page 92.
Identifying a blown fuse
A fuse is blown if its metal strip is ruptured
››› Fig. 67.
● Point a lamp at the fuse to see if it has
blown.
T

o replace a fuse
● Remove the fuse.
● Replace the blown fuse by one with an
identica
l amperage rating (same colour and
markings) and identical size. » 55

The essentials
Repairing a tyre with the anti-punc-
t ur
e k
it Fig. 68
Standard representation: contents of
the anti-p u
nct

ure kit. The anti-puncture kit is located under the
floor p
anel
in the lug

gage compartment.
Sealing the tyre
● Unscrew the tyre valve cap and insert. Use
the ›››

Fig. 68 1 tool to remove the insert.
Pl ac
e it
on a clean surface.
● Shake the tyre sealant bottle vigorously
›››
Fig. 68 10 .
● Screw the inflator tube ››
›
Fig. 68 3 into
the se al
ant
bottle. The bottle's seal will break
automatically. ●
Remov
e the lid from the filling tube
››› Fig. 68 3 and screw the open end of the
t ube int
o the ty
re valve.
● With the tyre sealant bottle upside down,
fill
the tyre with the contents of the sealant
bottle.
● Remove the bottle from the valve.
● Place the insert back into the tyre valve us-
ing the too
l ››› Fig. 68 1 .
Infl atin
g the ty
re
● Screw the compressor tyre inflator tube
›››
Fig. 68 5 into the tyre valve.
● Check that the air bleed screw is closed
› ›
›

Fig. 68 7 .
● Start the engine and leave it running.
● Insert the connector ››
›
Fig. 68 9 into the
v ehic
l
e's 12-volt socket ›››
 page 147.
● Turn the air compressor on with the ON/OFF
switc
h ››› Fig. 68 8 .
● Keep the air compressor running until it
r e
ac

hes 2.0 to 2.5 bar
(29-36 psi/200-250 kPa). a maximum of 8
minutes.
● Disconnect the air compressor.
● If it does not reach the pressure indicated,
uns
crew the tyre inflator tube from the valve.
● Move the vehicle 10m so that the sealant is
dis trib

uted throughout the tyre. ●
Scr ew the c

ompressor tyre inflator into the
valve.
● Repeat the inflation process.
● If the indicated pressure still cannot be
reac
hed, the tyre is too badly damaged. Stop
and request assistance from an authorised
technician.
● Disconnect the air compressor. Unscrew
the tyre infl
ator tube from the tyre valve.
● When the tyre pressure is between 2.5 and
2.0 bars, c
ontinue driving without exceeding
80 km/h (50 mph).
● Check the pressure again after 10 minutes
›››
 page 88.

››› in TMS (Tyre Mobility System)* on
page 86
››› page 86 57

The essentials
Towline anchorages
Att ac
h the b
ar or rope to the towline ancho-
rages.
The towline anchorages are located under
the floor panel in the luggage compartment,
next to the vehicle tools ›››
 page 86.
Screw the towline anchorage into the screw
connection ››› Fig. 76 o ››› Fig. 77 and tighten
it with the wheel brace.
Tow rope or tow bar
The tow bar offers increased safety and a
lower risk of damage.
The tow rope is recommended when there is
no tow bar. It must be elastic so that it does
not damage the vehicle.
Notes for the driver of the towing vehicle
● The tow rope must be taut before you drive
off.
● Rel

ease the clutch very carefully when start-
ing the v
ehicle (manual gearbox), or acceler-
ate gently (automatic gearbox).
Driving style
Towing requires some experience, especially
when using a tow rope. Both drivers should
realise how difficult it is to tow a vehicle. In-
experienced drivers should not attempt to
tow. Do not pull too hard with the towing vehicle
and take c

are to avoid jerking the tow rope.
When towing on an unpaved road, there is al-
ways a risk of overloading and damaging the
anchorage points.
Switch on the ignition so that the turn sig-
nals, windscreen wipers and windscreen
washer can work. Ensure that the steering
wheel is unlocked and moves freely.
Place the gear lever in neutral on vehicles
with a manual gearbox. With an automatic
gearbox, place the lever in N.
To brake, press the brake pedal firmly. The
brake servo does not work when the engine
is switched off.
The power steering only works when the igni-
tion is switched on and the vehicle is moving,
provided that the battery is sufficiently charg-
ed. Otherwise, it will need more force.
Ensure that the tow rope remains taut at all
times.

››› in General information on page 89
››› page 89 Tow-starting
If the engine will not start, first try starting it
us
in

g the battery of another vehicle
››› page 62. You should only attempt to tow-
start a vehicle if charging the battery does
not work. This is done by leveraging wheel
movement.
When tow-starting a vehicle with a petrol en-
gine, do not tow it more than a short dis-
tance, otherwise unburned fuel can enter the
catalytic converter.
● Engage 2nd or 3rd gear before moving off.
● Press the clutch and hold the pedal down.
● Switch the ignition on.
● Once both vehicles are moving, release the
clut c

h.
● As soon as the engine has started, press
the clutc
h and move the gear lever to neutral.
How to jump start Jump lea
ds The jump lead must have a sufficient wire
c
r
o

ss section.
If the engine fails to start because of a dis-
charged battery, the battery can be connec-
ted to the battery of another vehicle to start
the engine. 62