2017 Seat Leon SC engine

The essentials
Engine oil specificationsService intervalEngine typeSpecification
Petrol engines with Set Service Intervals (dependent on
time/distance travelled)1.4l CNG / 1.4l 110kW without ACTVW 502 00
1.0l / 1.2l / 1.4l 92kW / 1.4l 110kW with ACT / 1.8l / 2.0lVW 504 00
1.2l / 1.4l 110kW without ACT / 1.6l / 1.8l / 2.0lVW 502 00 a)
Petrol engines with Flexible Service Intervals (LongLife)1.0l / 1.2l / 1.4lVW 508 00 / VW 504 00 b)
1.8l / 2.0lVW 504 00
Diesel engines with Set Service and Flexible Service In-
tervalsc)With particulate filter (DPF)VW 507 00
Diesel engines with Set Service IntervalsWithout particulate filter (DPF)VW 505 01 a)
/ VW 506 01 a)
a)
If the quality of the fuel available in the country does not fulfil the EN 228 (for petrol) and EN 590 (for diesel) standards.
b) Use of engine oil compliant with the VW 504 00 specification instead of VW 508 00 may have a slight negative effect on the vehicle’s exhaust gas values.
c) Only use recommended oils, otherwise you may damage the engine.
››› in Changing engine oil on page 274
››› page 272 Coolant
Fig. 63
Engine compartment: coolant expan-
s ion t
ank

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

tment ›››
 page 270.
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. 60

The essentials
To protect the cooling system, the percentage
of a
d
ditive must always be at least 40 %,
even in warm climates where anti-freeze pro-
tection is 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 275

. 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 275.

››› in Topping up coolant on page 275
››› page 274 Brake fluid
Fig. 64
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 270
.
The level should be between the  and 
marks. If it is below , please visit a Techni-
cal Service.

››› in Top up brake fluid on page 276
››› page 275 Windscreen washer
Fig. 65
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 270.
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 276
››› page 276 Battery
The battery is located in the engine compart-
ment
›
›

›  page 270. It does not require » 61

The essentials
Emergencies F u
se
s
Fuse location Fig. 66
On the driver-side dash panel: fuse
bo x
c

over. Fig. 67
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. 66.
In the engine compartment
Press the locking tabs to release the fuse box
cover ››› Fig. 67.
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 101
›››
page 101 Replacing a blown fuse
Fig. 68
Image of a blown fuse. Preparation
●
Switch off the ignition, lights and all elec-
tric al
equipment

.
● Open the corresponding fuse box
›››
 page 102.
Identifying a blown fuse
A fuse is blown if its metal strip is ruptured
››› Fig. 68.
● 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. » 63

The essentials
Repairing a tyre with the anti-punc-
t ur
e k
it Fig. 69
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. 69 1 tool to remove the insert.
Pl ac
e it
on a clean surface.
● Shake the tyre sealant bottle vigorously
›››
Fig. 69 10 .
● Screw the inflator tube ››
›
Fig. 69 3 into
the se al
ant
bottle. The bottle's seal will break
automatically. ●
Remov
e the lid from the filling tube
››› Fig. 69 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. 69 1 .
Infl atin
g the ty
re
● Screw the compressor tyre inflator tube
›››
Fig. 69 5 into the tyre valve.
● Check that the air bleed screw is closed
› ›
›

Fig. 69 7 .
● Start the engine and leave it running.
● Insert the connector ››
›
Fig. 69 9 into the
v ehic
l
e's 12-volt socket ›››
 page 159.
● Turn the air compressor on with the ON/OFF
switc
h ››› Fig. 69 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 97.

››› in TMS (Tyre Mobility System)* on
page 95
››› page 95 65

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 95.
Screw the towline anchorage into the screw
connection ››› Fig. 77 o ››› Fig. 78 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 98
››› page 98 Tow-starting
If the engine will not start, first try starting it
us
in

g the battery of another vehicle
››› page 70. 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. 70

The essentials
Jump leads must comply with standard DIN
72553 (see c ab
l
e manufacturer's instruc-
tions). The wire cross section must be at least
25 mm 2
for petrol engines and at least
35 mm 2
for diesel engines. Note
● The v ehic

les must not touch each other,
otherwise electricity could flow as soon as
the positive terminals are connected.
● The discharged battery must be properly
connected t
o the on-board network. How to jump start: description
Fig. 79
Diagram of connections for vehicles
w ithout


Start Stop system Fig. 80
Diagram of connections for vehicles
with St

art Stop system Jump lead terminal connections
Swit
c

h off the ignition of both vehicles
››› .
C onnect
one end of

the red jump lead to
the positive + terminal of the vehicle
w ith the fl
at

battery A
› ›
› Fig. 79 .
Connect the other end of the red jump
lead to the positive terminal + in the
v ehic
l

e providing assistance B .
F or

vehicles without Start-Stop system:
connect one end of the black jump lead
to the negative terminal – of the vehi-
c l
e pr

oviding the current B
› ›
› Fig. 79 .
For vehicles with Start-Stop system: con-
nect one end of the black jump lead X to a suitable ground terminal, to a solid
piec
e of
met

al in the engine block, or to
the engine block itself ››› Fig. 80.
1.
2.
3.
4a.
4b. Connect the other end of the
black
jump
lead X to a solid metal component bol-
t ed t
o the en
gine block or to the engine
block itself of the vehicle with the flat
battery. Do not connect it to a point near
the battery A .
P o
s

ition the leads in such a way that
they cannot come into contact with any
moving parts in the engine compart-
ment.
Starting Start the engine of the vehicle with the
boosting battery and let it run at idling
speed.
Start the engine of the vehicle with the
flat battery and wait for 2 or 3 minutes
until the engine is running.
Removing the jump leads Before you remove the jump leads,
switch off the dipped beam headlights if
they are switched on.
Turn on the heater blower and heated
rear window in the vehicle with the flat
battery. This helps minimise voltage
peaks which are generated when the
leads are disconnected.
When the engine is running, disconnect
the leads in reverse order to the details
given above. »
5.
6.
7.
8.
9.
10.
11.
71

The essentials
Make sure the battery clamps have sufficient
met al-t
o-met
al contact with the battery termi-
nals.
If the engine fails to start after about 10 sec-
onds, switch off the starter and try again after
about 1 minute. WARNING
● Ple a

se note the safety warnings referring to
working in the engine compartment
›››  page 270.
● The battery providing assistance must have
the same v
oltage as the flat battery (12V) and
approximately the same capacity (see imprint
on battery). Failure to comply could result in
an explosion.
● Never use jump leads when one of the bat-
teries
is frozen. Danger of explosion! Even af-
ter the battery has thawed, battery acid could
leak and cause chemical burns. If a battery
freezes, it should be replaced.
● Keep sparks, flames and lighted cigarettes
awa
y from batteries, danger of explosion.
Failure to comply could result in an explo-
sion.
● Observe the instructions provided by the
manufact
urer of the jump leads.
● Do not connect the negative cable from the
other vehic
le directly to the negative terminal
of the flat battery. The gas emitted from the
battery could be ignited by sparks. Danger of
explosion. ●
Never att ac

h the negative cable to fuel sys-
tem components or the brake lines in the oth-
er vehicle.
● The non-insulated parts of the battery
clamp
s must not be allowed to touch. The
jump lead attached to the positive battery
terminal must not touch metal parts of the ve-
hicle, this can cause a short circuit.
● Position the leads in such a way that they
cannot c
ome into contact with any moving
parts in the engine compartment.
● Do not lean on the batteries. This could re-
sult
in chemical burns. Note
The vehicles must not touch each other, oth-
erw i

se electricity could flow as soon as the
positive terminals are connected. Changing the wiper blades
W ind
s

creen wipers service position Fig. 81
Wipers in service position. The wiper arms can be raised when the wip-
er
s
ar

e in service position ››› Fig. 81.
● Close the bonnet ›››

 page 270.
● Switch the ignition on and off.
● Press the windscreen wiper lever down-
ward
s briefly 4
› ›
› page 32.
Before driving, always lower the wiper arms.
Using the windscreen wiper lever, the wind-
screen wiper arms return to their initial posi-
tion.

››› page 97 72

Airbag system
such as the properties of the object the vehi-
c l
e hits
(hard/soft), angle of impact, vehicle
speed, etc.
Deceleration trajectory is key for airbag acti-
vation.
The control unit analyses the collision trajec-
tory and activates the respective restraint
system.
If the deceleration rate is below the prede-
fined reference value in the control unit the
airbags will not be triggered, even though
the accident may cause extensive damage to
the car.
The following airbags are triggered in seri-
ous head-on collisions:
● Driver airbag.
● Front passenger front airbag
● Knee airbag for the driver.
The fol
lowing airbags are triggered in seri-
ous side-on collisions:
● Front side airbag on the side of the acci-
dent.
● Re

ar side airbag on the side of the acci-
dent.
● Cur

tain (head) airbag on the side of the ac-
cident. In an ac

cident with airbag activation:
● the interior lights switch on (if the interior
light swit
ch is in the courtesy light position);
● the hazard warning lights switch on;
● all doors are unlocked;
● the fuel supply to the engine is cut.
Safety instructions about air-
bags Fr

ont airbags Read the additional information carefully
› ›
›

 page 22. WARNING
● The deplo yment

space between the front
passengers and the airbags must not in any
case be occupied by other passenger, pets
and objects.
● The airbags provide protection for just one
accident; r
eplace them once they have de-
ployed.
● It is also important not to attach any ob-
jects
such as cup holders or telephone
mountings to the surfaces covering the air-
bag units.
● Do not attempt to modify components of
the airbag sys
tem in any way. Knee airbag*
Read the additional information carefully
›› ›

 page 23. WARNING
● The knee airbag i s

deployed in front of the
driver's knees. Always keep the deployment
areas of the knee airbags free.
● Never not fix objects to the cover or in the
deployment
area of the knee airbag.
● Adjust the driver's seat so that there is a
dist
ance of at least 10 cm (4 inches) between
your knees and the location of the this air-
bag. If your physical constitution prevents
you from meeting these requirements, make
sure you contact a specialised workshop. Side airbags*
Read the additional information carefully
› ›
›

 page 24. WARNING
● If y

ou do not wear a seat belt, if you lean
forward, or are not seated correctly while the
vehicle is in motion, you are at a greater risk
of injury if the side airbag system is triggered
in an accident.
● In order for the side airbags to provide their
maximum pr
otection, the prescribed sitting » 87
Technical data
Advice
Operation
Emergencies
Safety