2016 Seat Leon 5D cooling

Towing bracket device
permissible speed in an unfavourable road,
w e
ather or w
ind conditions. This applies es-
pecially when driving downhill.
You should always reduce speed immediately
if the trailer shows the slightest sign of snak-
ing. Never try to stop the “snaking” by in-
creasing speed.
Always brake in due course. If the trailer has
an overrun brake, apply the brakes gently at
first and then, firmly. This will prevent the
jerking that can be caused by locking of trail-
er wheels. Select a low gear in due course
before going down a steep downhill. This en-
ables you to use the engine braking to slow
down the vehicle.
Reheating
At very high temperatures and during pro-
longed slopes, driving in a low gear and high
engine speed, always monitor the coolant
temperature gauge ››› page 109.
Electronic stability control*
The ESC* system helps to stabilise the trailer
in case of skidding or rocking. Retrofitting a towing bracket*
Fig. 238
Attachment points for towing brack-
et . If a towing bracket is to be fitted after the ve-
hic
l
e i

s purchased, this must be completed
according to the instructions of the towing
bracket manufacturer. The attachment points for the towing bracket
A are on the lower part of the vehicle.
The di s
t

ance between the centre of the ball
coupling and the ground should never be
lower than the indicated value, even with a
fully loaded vehicle and including the maxi-
mum drawbar load.
Elevation values for securing the towing
bracket:
B65 mm (minimum)
C350 mm to 420 mm (fully laden vehicle)
D1040 mm
E317 mm
FLEON/LEON SCLEON ST
319 mm596 mm Fitting a towing bracket
●
Driving with a trailer involves an extra effort
f or the
v

ehicle. Therefore, before fitting a
towing bracket, please contact a Technical
Service to check whether your cooling system
needs modification.
● The legal requirements in your country
must
be observed (e.g. the fitting of a sepa-
rate control lamp).
● Certain vehicle components, e.g. the rear
bumper, mu
st be removed and reinstalled.
The towing bracket securing bolts must be »
243
Technical data
Advice
Operation
Emergencies
Safety

Advice
is equipped with a particulate filter, the sul-
phur c ont
ent
of the fuel must be below 50
parts per million.
Winter-grade diesel
Summer fuel becomes thicker in winter and it
is more difficult to start the engine. For this
reason, petrol stations in some countries al-
so offer winter diesel with improved fluidity
when cold (winter-grade diesel).
Water in the fuel filter 1)
If your vehicle has a diesel engine and is
equipped with a fuel filter with a water sepa-
rator, the instrument panel may display the
following warning:  Water in the
fuel filter. If this is the case, take the
vehicle to a specialised workshop so that
they can drain the fuel filter. CAUTION
● The v ehic

le is not designed for the use of
FAME fuel (biodiesel). The fuel system would
be damaged if you used biodiesel.
● Do not mix fuel additives, the so-called
“thinners”, petro
l or similar additives with
diesel fuel.
● If poor-quality diesel fuel is used, it may be
neces
sary to drain the fuel filter more fre-
quently than is specified in the Maintenance Programme. We recommend having this done
by
a s

pecialised workshop. If water is allowed
to collect in the filter, this can cause engine
performance problems. Natural gas


›› ›

table on page 2
Natural gas
Natural gas can be compressed or in liquid
form, addition to others.
Liquefied natural gas (LNG) is the result of
heavy cooling of natural gas. Therefore its
volume is considerably reduced compared
with compressed natural gas (CNG). In vehi-
cles with a natural gas engine, liquefied nat-
ural gas cannot be directly refilled, as the gas
would expand excessively in the vehicle gas
tank.
Therefore, vehicles with a natural gas engine
must only be refuelled using compressed
natural gas ››› .
Nat ur
a

l gas quality and consumption
Natural gas is divided into the groups H and
L depending on its quality. Gas type H has a superior heating power and
inferior nitrog

en and carbon dioxide content
than type L. The higher the heating power of
the natural gas, the lower the consumption
will be.
However, the heating power and the propor-
tion of nitrogen and carbon dioxide can fluc-
tuate within the quality groups. Therefore, ve-
hicle consumption can also vary when using
a single type of gas only.
The engine management automatically
adapts to the natural gas used according to
its quality. Therefore, different quality gases
can be mixed in the tank, without the need
for comprehensive draining before applying a
different quality gas.
Updated information relating to natural gas
quality is displayed on the instrument panel
›››  page 30.
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 v
ehic

le.
● Extinguish cigarettes immediately. 1)
Valid for the market: Algeria.
260

Checking and refilling levels
●
Tak e c
are not to cause short circuits in the
electrical system, especially when working
on the battery.
● 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.
● Never cover the engine with additional in-
sul
ating materials such as a blanket. Risk of
fire!
● Do not unscrew the cap on the coolant ex-
pans
ion tank when the engine is hot. The
cooling system is under pressure.
● Protect face, hands and arms by covering
the cap with a l
arge, thick rag to protect
against escaping coolant and steam.
● If it is necessary to work in the engine com-
partment
while the engine is running, the ro-
tating components (for example, poly-V belt,
alternator, radiator fan) and the high voltage
ignition system are an additional hazard.
● 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 extinguish-
er immediately available. CAUTION
When topping up fluids make sure the correct
fluid is p

ut into the correct filler opening, oth-
erwise this can cause serious malfunctions or
engine damage. For the sake of the environment
Inspect the ground underneath your vehicle
re gu

larly so that any leaks are detected at an
early stage. If you find spots of oil or other
fluids in the area where it was parked, have
your vehicle inspected at the workshop. Note
In right-hand drive vehicles* some brake flu-
id re ser

voirs are on the other side of the en-
gine compartment ››› Fig. 240. Opening the bonnet
Read the additional information carefully
› ›
›

 page 12
The bonnet is released from inside the vehi-
cle.
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. WARNING
Never open the bonnet if you see steam or
drips of

coolant being released from the en-
gine compartment. Failure to comply could
result in burns. Wait until no steam or coolant
can be seen before opening the bonnet. Closing the bonnet
–
Slightly lift the bonnet.
– Release the bonnet stay before pressing it
bac k

into its support.
– Carefully close the bonnet.
– Press the bonnet down until it locks into
plac

e.
– Make sure that the bonnet catches onto its
cla

sp. Do not press down too hard ››› .
WARNING
● For s af

ety reasons the bonnet must always
be completely closed when the vehicle is
moving. Therefore, after closing the bonnet,
always check that the locking element is
properly engaged. This is the case if the bon-
net is flush with the adjacent body panels.
● Should you notice that the bonnet is not
safely
secured when the vehicle is moving,
stop the vehicle immediately and close the
bonnet. Failure to follow this instruction
could result in an accident. 263
Technical data
Advice
Operation
Emergencies
Safety

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 50.
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 262.
● 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 51
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
266

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 52
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 109. »
267
Technical data
Advice
Operation
Emergencies
Safety

Wheels
●
Av oid ru
nning the vehicle on tyres that are
more than 6 years old. If you have no
alternative, 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 l aw

s in the country concerned. Note
● A S EA

T Service Centre should be consulted
to find out whether wheels or tyres of differ-
ent sizes to those originally fitted by SEAT
can be fitted, and to find out about the com-
binations allowed between the front axle
(axle 1) and the rear axle (axle 2).
● Never mount used tyres if you are not sure
of their “pr
evious 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
head

s. 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 58.
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 283.
● Regularly check the cold inflation pressure
of the tyr
es. If necessary, change the tyre
pressure of the vehicle tyres while they are
cold. ●
Re gu

larly check your tyres for damage and
wear.
● Never exceed the maximum permitted
speed or loa
ds 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
● Driv ing 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. 275
Technical data
Advice
Operation
Emergencies
Safety

Index
Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
263
p anor
amic sliding sunroof . . . . . . . . . . . . . . . . 129
windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Clutch (warning lamp) . . . . . . . . . . . . . . . . . . . . . 186
Coming Home . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Connectivity Box . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Control and warning lamps diesel particulate filter . . . . . . . . . . . . . . . . . . . 189
emission control . . . . . . . . . . . . . . . . . . . . . . . . 190
Controls and displays general instrument panel . . . . . . . . . . . . . . . . . 103
Controls on the steering wheel operating the audio system . . . . . . . . . . . . . . . 112
operating the telephone and audio system . . 113
Convenience closing panoramic sliding sunroof . . . . . . . . . . . . . . . . 130
Convenience opening panoramic sliding sunroof . . . . . . . . . . . . . . . . 130
Coolant checking level . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Cooling system checking coolant . . . . . . . . . . . . . . . . . . . . . . . 266
coolant temperature gauge . . . . . . . . . . . . . . . 107
topping up coolant . . . . . . . . . . . . . . . . . . . . . . 266
Cornering lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Correct position . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Correct sitting position front passenger . . . . . . . . . . . . . . . . . . . . . . . . . 67
rear seat passengers . . . . . . . . . . . . . . . . . . . . . 68
Cruise control . . . . . . . . . . . . . . . . . . . . . . . . 39, 195 operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Cruise control system . . . . . . . . . . . . . . . . . . . . . . 195 warning and indication lamp . . . . . . . . . . . . . . 195 D
Danger
s in not using the seat belt . . . . . . . . . . . . 73
Dash panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Data sticker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
Deactivating the front passenger front airbag . . . 17
Deactivation of front airbag . . . . . . . . . . . . . . . . . . 80
Defective bulbs changing a bulb . . . . . . . . . . . . . . . . . . . . . . . . . 93
Detachable ball assembling . . . . . . . . . . . . . . . . . . . . . . . 236, 237
checking attachment . . . . . . . . . . . . . . . . . . . . 237
placing in standby position . . . . . . . . . . . . . . . 235
removing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
standby position . . . . . . . . . . . . . . . . . . . . . . . . 236
Diesel diesel particulate filter . . . . . . . . . . . . . . . . . . . 189
engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
preheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Diesel particulate filter malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Digital clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Direction of rotation tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104, 105
Display of traffic signs on the instrument panel activate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
deactivate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Disposal seat belt tensioners . . . . . . . . . . . . . . . . . . . . . . 75
Distance control see Adaptive cruise control . . . . . . . . . . . . . . . 196
Door cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Door handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Door lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Door release lever . . . . . . . . . . . . . . . . . . . . . . . . 103 Doors
chil dproof locks . . . . . . . . . . . . . . . . . . . . . . . . 123
opening and closing . . . . . . . . . . . . . . . . . . . . . 10
Downhill speed control . . . . . . . . . . . . . . . . . . . . 185
Downhill speed control function . . . . . . . . . . . . . 185
Drawer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Drink holders . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Driver see Correct sitting position . . . . . . . . . 66, 67, 68
Driver information system CD/radio indication . . . . . . . . . . . . . . . . . . . . . . 30
engine oil temperature display . . . . . . . . . . . . . 35
operation with the windscreen wiper lever . . . . 30
Driving driving abroad . . . . . . . . . . . . . . . . . . . . . . . . . 136
with a trailer . . . . . . . . . . . . . . 234, 239, 241, 242
Driving abroad headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Driving data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 data summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Driving mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Driving profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Driving safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Driving through water . . . . . . . . . . . . . . . . . . . . . 191
DSG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Duplicate keys . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Dust and pollen filter . . . . . . . . . . . . . . . . . . . . . . 163
Dynamic headlight range control . . . . . . . . . . . . 137
E E10 see Ethanol (fuel) . . . . . . . . . . . . . . . . . . . . . . . 258
Easy Connect . . . . . . . . . . . . . . . . . . . . . . . . 27, 110
Economical driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
309