2015 Seat Leon 5D cooling

Advice
CAUTION
If the oil level is above the area A do not
st ar
t the engine. This could result in damage
to the engine and catalytic converter. Contact
a specialised workshop. For the sake of the environment
The oil level must never be above area A .
Otherw i

se oil can be drawn in through the
crankcase breather and escape into the at-
mosphere via the exhaust system. Note
Before a long trip, we recommend finding an
engine oi l

that conforms to the correspond-
ing VW specifications and recommend keep-
ing it in the vehicle. This way, the correct en-
gine oil will always be available for a top-up if
needed. Changing engine oil
Read the additional information carefully
› ›
›

 page 51.
The engine oil must be changed at the inter-
vals given in the service schedule.
We recommend that you have the engine oil
changed by a Technical Service.
The oil change intervals are shown in the
Maintenance Programme. WARNING
Only change the engine oil yourself if you
hav e the s

pecialist knowledge required!
● Before opening the bonnet, read and ob-
serve the w
arnings ››› page 246.
● Wait for the engine to cool down. Hot oil
may
cause burn injuries.
● Wear eye protection to avoid injuries, such
as ac
id burns, caused by splashes of oil.
● When removing the oil drain plug with your
finger
s, keep your arm horizontal to help pre-
vent oil from running down your arm.
● Wash your skin thoroughly if it comes into
contact
with engine oil.
● Engine oil is poisonous! Used oil must be
stor
ed in a safe place out of the reach of chil-
dren. CAUTION
No additives should be used with engine oil.
This c

ould result in engine damage. Any dam-
age caused by the use of such additives
would not be covered by the factory warranty. For the sake of the environment
● Bec au

se of disposal problems and the spe-
cial tools and specialist knowledge required,
we recommend that you have the engine oil
and filter changed by a Technical Service.
● Never pour oil down drains or into the
ground. ●
Use a s uit

able container when draining the
used oil. It must be large enough to hold all
the engine oil. Cooling system
Top pin

g up coolant Read the additional information carefully
›› ›

 page 52
Top up coolant when the level is below the
MIN (minimum) mark.
Checking coolant level
– Park the vehicle in a horizontal position.
– Switch the ignition off.
– Read off the coolant level on coolant ex-
pan s

ion tank. When the engine is cold, the
coolant level should be between the marks.
When the engine is hot, it may be slightly
above the upper mark.
Topping up coolant
– Wait for the engine to cool down.
– Cover the coolant expansion tank cap with
a cloth and car

efully unscrew it to the left
››› .
– Top up the coolant only if there is still cool-
ant in the e xp

ansion tank, otherwise you
250

Checking and refilling levels
could d amage the engine. If there is no
c oo
lant in the expansion tank, do not con-
tinue driving. You should obtain professio-
nal assistance ››› .
– If there is still some coolant in the expan-
sion t
ank, t

op up to the upper mark.
– Top up with coolant until the level becomes
stab

le.
– Screw the cap back on correctly.
Any lo
ss of coolant fluid normally indicates a
leak in the cooling system. Take the vehicle
straight to a specialised workshop to have
the cooling system examined. If there are no
leaks in the engine cooling system, a loss of
coolant can only occur if the coolant boils
and is forced out of the system as a result of
overheating. WARNING
● The coo lin

g system is under pressure. Do
not unscrew the cap on the coolant expan-
sion tank when the engine is hot: risk of
burns!
● The antifreeze and coolant fluid can be a
health h
azard. Therefore, the antifreeze
should be stored in the original container in a
safe place out of reach of children. Failure to
comply could result in poisoning.
● If working inside the engine compartment,
remember that, ev
en when the ignition is
switched off, the radiator fan may start up au- tomatically, and therefore there is a risk of in-
jury
. WARNING
If there is not enough anti-freeze in the cool-
ant sys

tem, the engine may fail leading to se-
rious damage.
● Please make sure that the percentage of
additiv
e is correct with respect to the lowest
expected ambient temperature in the zone in
which the vehicle is to be used.
● When the outside temperature is very low,
the cool
ant could freeze and the vehicle
would be immobilised. In this case, the heat-
ing would not work either and inadequately
dressed passengers could die of cold. CAUTION
Do not top up the expansion tank with cool-
ant fluid if it

is empty! Air could enter the
cooling system. In this case, stop driving.
Seek specialist assistance. Otherwise, there
is a risk of engine damage. CAUTION
The original additives should never be mixed
with c oo

lants which are not approved by
SEAT. Otherwise, you run the risk of causing
severe damage to the engine and the engine
cooling system.
● If the fluid in the expansion tank is not pur-
ple b
ut is, for example, brown, this indicates that the G13 additive has been mixed with an
ina
dequat

e coolant. The coolant must be
changed as soon as possible if this is the
case! This could result in serious faults and
engine damage. For the sake of the environment
Coolants and additives can contaminate the
en vir

onment. If any fluids are spilled, they
should be collected and correctly disposed
of, with respect to the environment. Brake fluid
Top
pin

g up brake fluid Read the additional information carefully
› ›
›

 page 53
Checking the brake fluid level
The brake fluid level must be between the
MIN and MAX markings.
However, if the brake fluid level goes down
noticeably in a short time, or drops below the
MIN mark, there may be a leak in the brake
system. Seek specialist assistance. A warn-
ing light on the instrument panel display
monitors the brake fluid level ››› page 108. »
251
Technical data
Advice
Operation
Emergencies
Safety

Wheels
manufacturer. Inadequate tyre clearance can
re
s
ult in damage to the tyres or the vehicle,
causing a serious safety risk. Risk of acci-
dent! It may also invalidate the vehicle's reg-
istration for use on public roads.
● Avoid running the vehicle on tyres that are
more than 6
years old. If you have no alterna-
tive, you should drive slowly and with extra
care at all times.
● If wheel trims are fitted after the car is pur-
cha
sed, ensure that there is an adequate flow
of air for cooling the brake system. For the sake of the environment
Old tyres must be disposed of according to
the la w

s in the country concerned. Note
● Never mou nt

used tyres if you are not sure
of their “previous history”.
● For technical reasons, it is not generally
poss
ible to use the wheels from other vehi-
cles. In some cases, this may also be true for
the same model of wheel. Wheel bolts
The wheel
bolts
ar
e m
atched to the rims.
When installing different wheels (for instance
alloy wheels or wheels with winter tyres) it is
important to use the correct wheel bolts with
the right length and correctly shaped bolt heads. This ensures that wheels are fitted se-
curely

and that the brake system functions
correctly.
The wheel bolts must be clean and turn easi-
ly.
A special adapter is required to turn the anti-
theft wheel bolts* ›››
 page 59.
Tyre monitoring systems Introduction WARNING
Unsuitable handling of the wheels and tyres
ma y

lead to sudden tyre pressure losses, to
tread separation or even to a blow-out.
● Check tyre pressures regularly and ensure
they are m
aintained at the pressures indica-
ted. Tyre pressure that is too low could cause
overheating, resulting in tread detachment or
even burst tyres.
● Tyre pressure should be that indicated on
the label when the ty
res are cold at all times
››› page 267.
● Regularly check the cold inflation pressure
of the tyr
es. If necessary, change the tyre
pressure of the vehicle tyres while they are
cold.
● Regularly check your tyres for damage and
wear
. ●
Never e x

ceed the maximum permitted
speed or loads specified for the type of tyre
fitted on your vehicle. For the sake of the environment
Under-inflated tyres lead to increased fuel
c on s

umption and tyre wear. Note
● Drivin g f

or the first time with new tyres at a
high speed can cause them to slightly ex-
pand, which could then produce an air pres-
sure warning.
● Only replace used tyres with those author-
ised by
SEAT for the corresponding type vehi-
cle.
● Do not only rely on the tyre monitoring sys-
tem. Re
gularly check your tyres to ensure
that the tyre pressure is correct and that the
tyres are not damaged due to puncture, cuts,
tears and impacts/dents. Remove objects
from the tyres only when they have not
pierced the tyres. 259
Technical data
Advice
Operation
Emergencies
Safety

Index
Blown bulbs ch
an
ging a bulb . . . . . . . . . . . . . . . . . . . . . . . . . 94
Bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13, 246 opening the bonnet . . . . . . . . . . . . . . . . . . . . . 247
Brake assist system . . . . . . . . . . . . . . . . . . . . . . . 178
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181 brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Brake servo . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
new brake pads . . . . . . . . . . . . . . . . . . . . . . . . 181
Braking Brake assist system . . . . . . . . . . . . . . . . . . . . . 178
Moving off on hills . . . . . . . . . . . . . . . . . . . . . . 182
C Camera cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Lane Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
natural gas tank . . . . . . . . . . . . . . . . . . . . . . . . 242
windscreen washer water . . . . . . . . . . . . . . . . 252
Car-care products . . . . . . . . . . . . . . . . . . . . . . . . . 231
Catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . 176
CCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
CD-ROM player (navigation) . . . . . . . . . . . . . . . . 146
Central locking system . . . . . . . . . . . . . . . . . . . . . 116 anti-theft alarm . . . . . . . . . . . . . . . . . . . . . . . . . 121
central locking switch . . . . . . . . . . . . . . . . . . . . 119
Electric windows . . . . . . . . . . . . . . . . . . . . . . . . 125
manual locking . . . . . . . . . . . . . . . . . . . . . . . . . . 12
programming . . . . . . . . . . . . . . . . . . . . . . . . . . 119
remote control key . . . . . . . . . . . . . . . . . . . . . . 118
selective unlocking system . . . . . . . . . . . . . . . 118
sliding/tilting sunroof . . . . . . . . . . . . . . . . . . . 125
Cetane number (diesel fuel) . . . . . . . . . . . . . . . . 244 Changing
parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Changing a bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 front fog light bulbs . . . . . . . . . . . . . . . . . . . . . . 96
number plate light . . . . . . . . . . . . . . . . . . . . . . 100
rear light bulb on the rear lid . . . . . . . . . . . . . . . 99
rear light bulbs on the side panel . . . . . . . . . . . 97
Rear light on the side panel . . . . . . . . . . . . . . . . 98
Changing a wheel . . . . . . . . . . . . . . . . . . . . . . . . . 58 subsequent work . . . . . . . . . . . . . . . . . . . . . . . . 60
Changing gear engaging gears (manual gearbox) . . . . . . . . . 167
Changing main headlight bulbs turn signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Changing settings CAR menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Changing the blades . . . . . . . . . . . . . . . . . . . . . . . 88
Changing the main beam headlight bulb main beam headlight . . . . . . . . . . . . . . . . . . . . . 96
Changing the main headlight bulb day light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
dipped headlight . . . . . . . . . . . . . . . . . . . . . . . . 95
Changing the wiper blades . . . . . . . . . . . . . . . . . . 64
Charging the battery . . . . . . . . . . . . . . . . . . . . . . 254
Checking levels engine compartment . . . . . . . . . . . . . . . . . . . . 246
Child-proof locking electric windows . . . . . . . . . . . . . . . . . . . . . . . . 124
Child seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20, 85 categorisation in groups . . . . . . . . . . . . . . . . . . 85
ISOFIX system . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
safety instructions . . . . . . . . . . . . . . . . . . . . 20, 84
Securing with seat belt . . . . . . . . . . . . . . . . . . . 21Top Tether system . . . . . . . . . . . . . . . . . . . . . 22, 24
City Emergency braking function . . . . . . . . . . . . . 201 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
alcantar a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
carbon parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Easy Connect control panel . . . . . . . . . . . . . . . 235
Exhaust pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Fabrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Leather . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
natural leather . . . . . . . . . . . . . . . . . . . . . . . . . 236
plastic parts . . . . . . . . . . . . . . . . . . . . . . 233, 235
Radio display . . . . . . . . . . . . . . . . . . . . . . . . . . 235
seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
trims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
washing the vehicle . . . . . . . . . . . . . . . . . . . . . 231
wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Climatronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Panoramic sliding sunroof . . . . . . . . . . . . . . . . 126
windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Clutch (warning lamp) . . . . . . . . . . . . . . . . . . . . . 174
Coming Home . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Controls and displays general instrument panel . . . . . . . . . . . . . . . . . 103
Controls on the steering wheel Operating the audio system . . . . . . . . . . . . . . 112
operating the audio system and telephone . . 113
Convenience closing panoramic sliding sunroof . . . . . . . . . . . . . . . . 127
Convenience opening panoramic sliding sunroof . . . . . . . . . . . . . . . . 127
Coolant checking level . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Cooling system checking coolant . . . . . . . . . . . . . . . . . . . . . . . 250
Coolant temperature gauge . . . . . . . . . . . . . . . 107
topping up coolant . . . . . . . . . . . . . . . . . . . . . . 250
294