Seat Leon 5D 2015 Workshop Manual

The essentials
How does the heating and the fresh air system work? Fig. 58
See position on page 9-10 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.
1TemperatureTurn the control to adjust the temperature. The temperature cannot be lower than that of the exterior air temperature, as this system cannot cool
or dehumidify the air
2FanSetting 0: blower, heating and fresh air systems 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.

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.»
49

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
maintenance. It is checked as part of the In-
s pection
Ser
vice.

››› in Important safety warnings for
handling a vehicle battery on page 254
››› page 253 54

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
● Rep
l
ace the cover again or close the fuse
box lid.
Bulbs Bul
bs (12 V)
Light source used for each function
Halogen headlightsType
Daytime driving light/side lightP21W SLL
Dipped beam headlightsH7 LL
Main beam headlightsH7 LL
Turn signalPY21W LL
Full-LED main headlightsType
No bulbs may be replaced. All functions are with LEDs
Front fog lightType
Fog/cornering lights*H8
Rear lightsType
Brake light/tail lightP21W LL
Side lights2x W5W LL
Turn signalPY21W LL
Retro fog lightH21W
Rear lightsType
Reverse lightsP21W LL
LED rear lightsType
Turn signalPY21W LL
Retro fog lightH21W
Reverse lightsP21W LL
The remaining functions work with LEDs 
›››
page 94 Action in the event of a punc-
t
ur
e
Wh

at to do first ●
Park the vehicle on a horizontal surface
and in a s af
e p

lace as far away from traffic as
possible.
● Apply the handbrake.
● Switch on the hazard warning lights.
● Manual gearbox: select the 1s
t gear.
● Automatic gearbox: Move the sel
ector lever
to position P.
● If you are towing a trailer, unhitch it from
your v
ehicle. ●
Have the v
ehicle tool kit ›››
 page 86
and the spare wheel* ready
›››  page 262.
● Observe the applicable legislation for each
countr
y (reflective vest, warning triangles,
etc.).
● All occupants should leave the vehicle and
wait in a s
afe place (for instance behind the
roadside crash barrier). WARNING
● Alw a

ys observe the above steps and pro-
tect yourself and other road users.
● If you change the wheel on a slope, block
the wheel on the oppo
site side of the car with
a stone or similar to prevent the vehicle from
moving. 56

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
Changing a wheel V ehic
l
e tool kit Fig. 69
See position on page 8 An adapter for the anti-theft wheel bolts*
T
o
wline anc

horage
Box spanner for wheel bolts*
Crank handle for jack
Jack*
Wire hook for pulling off the wheel cov-
ers*/wheel bolt cap clip.

››› in What to do first on page 56
››› page 86 1
2
3
4
5
6 Wheel covers*
Fig. 70
Remove the wheel cover. The wheel covers must be removed for access
t
o the wheel
bo

lts.
Removing ● Remove the wheel cover using the wire
hook ››

› Fig. 70.
● Hook this into one of the cut-outs of the
wheel co
ver.
Fitting
● Fit the wheel cover onto the wheel rim by
pres
sing it firmly.
● Put pressure on the point of the cut-out for
the valv
e.
● Next fit the rest of the wheel cover Wheel bolt caps*
Fig. 71
Wheel: wheel bolts with caps. Removal
● Fit the plastic clip (vehicle tools) over the
c ap u
nti

l it clicks into place ››› Fig. 71.
● Remove the cap with the plastic clip. 58