2014 Seat Leon SC maintenance

Foreword
This Instruction Manual and its correspond-
ing supplements should be read carefully to
familiarise yourself with your vehicle.
Besides the regular care and maintenance of
the vehicle, its correct handling will help pre-
serve its value.
For safety reasons, always note the informa-
tion concerning accessories, modifications
and part replacements. If selling the vehicle, give all of the on-board
documentation to the new owner, as it
should be kept with the vehicle.
You can access the information in this man-
ual using:
● Thematic table of contents that follows the
manual’s general chapter structure.
● Visual table of contents that uses graphics
to indicate the pages containing “essential” information, which is detailed in correspond-
ing chapters.
●
Alphabetical index with many terms and
synonyms to help you find information. WARNING
Read and always observe safety informa-
tion concerning the passenger's front air-
bag ››› page 57, Important information
regarding the front passenger's airbag .

Table of Contents
Table of Contents
The essentials . . . . . . . . . . . . . . . . . . . . . . . . 5
Exterior view . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Interior view . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
How it works . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Unlocking and locking . . . . . . . . . . . . . . . . . . . . 9
Before driving . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Starting the vehicle . . . . . . . . . . . . . . . . . . . . . . 14
Lights and visibility . . . . . . . . . . . . . . . . . . . . . . 15
Easy Connect . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Driver information system . . . . . . . . . . . . . . . . . 19
Cruise control . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Warning lamps . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Gearbox lever . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Air conditioning . . . . . . . . . . . . . . . . . . . . . . . . . 26
Level control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Action in the event of a puncture . . . . . . . . . . . 33
Emergency towing of the vehicle . . . . . . . . . . . 35
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Safe driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Safety first! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Advice about driving . . . . . . . . . . . . . . . . . . . . . 37
Sitting position for vehicle occupants . . . . . . . 38
Pedal area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
The reasons why we should wear seat belts . . 43
How to properly adjust your seatbelt . . . . . . . . 46
Seat belt tensioners . . . . . . . . . . . . . . . . . . . . . . 47
Airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Brief introduction . . . . . . . . . . . . . . . . . . . . . . . . 48
Airbag overview . . . . . . . . . . . . . . . . . . . . . . . . . 50
Deactivating airbags . . . . . . . . . . . . . . . . . . . . . 54
Transporting children safety . . . . . . . . . . . . . . . 56
Safety for children . . . . . . . . . . . . . . . . . . . . . . . 56
Child seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Operation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Controls and displays . . . . . . . . . . . . . . . . . . . . 65
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Instruments and warning/control lamps . . . . . 66
Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Control lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Driver information system . . . . . . . . . . . . . . . . . 72
Information system . . . . . . . . . . . . . . . . . . . . . . 72
Driving data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Speed warning function . . . . . . . . . . . . . . . . . . . 79
Service interval display . . . . . . . . . . . . . . . . . . . 80
Introduction to the Easy Connect system* . . . . 81
System Settings (CAR)* . . . . . . . . . . . . . . . . . . . 81
Opening and closing . . . . . . . . . . . . . . . . . . . . . 82
Central locking system . . . . . . . . . . . . . . . . . . . . 82
Anti-theft alarm system* . . . . . . . . . . . . . . . . . . 87
Rear lid (luggage compartment) . . . . . . . . . . . . 89
Electric windows . . . . . . . . . . . . . . . . . . . . . . . . . 90
Panoramic sliding sunroof* . . . . . . . . . . . . . . . . 92
Lights and visibility . . . . . . . . . . . . . . . . . . . . . . 94
Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Visibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Windscreen wiper and window wiper systems . 102
Rear vision mirror . . . . . . . . . . . . . . . . . . . . . . . . 104
Seats and head restraints . . . . . . . . . . . . . . . . . 106
Adjusting the seats and headrests . . . . . . . . . . 106
Seat functions . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Transport and practical equipment . . . . . . . . . 111
Storage compartments . . . . . . . . . . . . . . . . . . . 111
Storing objects . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Roof carrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Air conditioning . . . . . . . . . . . . . . . . . . . . . . . . . 124
Heating, ventilation and cooling . . . . . . . . . . . . 124
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Ignition lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Braking and parking . . . . . . . . . . . . . . . . . . . . . 131
Manual gearbox . . . . . . . . . . . . . . . . . . . . . . . . . 132 Automatic gearbox/DSG automatic gearbox* . 132
Run-in and economical driving . . . . . . . . . . . . . 140
Driver assistance systems
. . . . . . . . . . . . . . . . . 143
Braking and stability systems . . . . . . . . . . . . . . 143
Start-Stop system* . . . . . . . . . . . . . . . . . . . . . . . 148
Cruise control system (CCS)* . . . . . . . . . . . . . . . 150
Adaptive Cruise Control ACC* . . . . . . . . . . . . . . 151
Monitoring system Front Assist* . . . . . . . . . . . . 161
Lane Assist system* . . . . . . . . . . . . . . . . . . . . . . 166
SEAT driving modes (SEAT Drive Profile)* . . . . . 169
Tiredness detection (break recommendation)* 172
Parking aid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Towing bracket device . . . . . . . . . . . . . . . . . . . . 177
Trailer towing . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Advice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Care and maintenance . . . . . . . . . . . . . . . . . . . . 182
Accessories and modifications to the vehicle . 182
Care and cleaning . . . . . . . . . . . . . . . . . . . . . . . 183
Vehicle exterior care . . . . . . . . . . . . . . . . . . . . . . 183
Care of the vehicle interior . . . . . . . . . . . . . . . . . 187
Intelligent technology . . . . . . . . . . . . . . . . . . . . 190
Electro-mechanical steering . . . . . . . . . . . . . . . 190
Progressive steering . . . . . . . . . . . . . . . . . . . . . 190
Four-wheel drive . . . . . . . . . . . . . . . . . . . . . . . . . 191
Power Management . . . . . . . . . . . . . . . . . . . . . . 191
Checking and refilling levels . . . . . . . . . . . . . . . 193
Refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Cooling system . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Windscreen washer reservoir . . . . . . . . . . . . . . 204
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Wheels and tyres . . . . . . . . . . . . . . . . . . . . . . . . 208
Tyre monitoring systems . . . . . . . . . . . . . . . . . . 212
3

Introduction to the Easy Connect system*
service intervals permitted in the
››› Book-
let Maintenance Programme. Introduction to the Easy
Connect system*
System Settings (CAR)* Introduction To select the settings menus, press the Easy
Connect
 button and the
Setup function
button.
The actual number of menus available and
the name of the various options in these me-
nus will depend on the vehicle’s electronics
and equipment. WARNING
Any distraction may lead to an accident, with
the risk of injury. Operating the Easy Connect
system while driving could distract you from
traffic. CAR menu Setup
Read the additional information carefully
›››  page 17
Pressing the menu button will always take
you to the last menu used.
When the function button check box is activa-
ted , the function is active. Pressing the menu button
 will always take
you to the last menu used.
Any changes made using the settings menus
are automatically saved on closing those me-
nus.Function buttons in the ve-
hicle’s settings menuPage
ESC system››› page 143
Tyres››› page 212
Driver assistance››› table on page 18
Parking and manoeuvring››› page 173
Vehicle lights››› table on page 18
Rear vision mirrors and wind-
screen wipers››› table on page 18
Opening and closing››› table on page 18
Multifunction display››› page 19
Date and time››› table on page 18
Units››› table on page 18
Service››› page 67
Factory settings››› table on page 18 81
Technical specifications
Advice
Operation
Safety
The essentials

Operation
Economical and environmentally
friendly driving Fuel consumption, environmental pollution
and wear to the engine, brakes and tyres de-
pends largely on driving style. Fuel consump-
tion can be reduced by 10-15% with an eco-
nomical driving style and proper anticipation
of traffic conditions. The following section
gives you some tips on lessening the impact
on the environment and reducing your oper-
ating costs at the same time.
Active cylinder management (ACT
®
)*
Depending on vehicle equipment, the active
cylinder management (ACT ®
) may automati-
cally deactivate some of the engine cylinders
if the driving situation does not require too
much power. When it is switched off, no fuel
is injected into these cylinders, hence total
fuel consumption may be reduced. The num-
ber of active cylinders can be seen on the in-
strument panel display ›››
page 74.
Foresight when driving
Acceleration causes the vehicle to consume
more fuel. If you think ahead when driving,
you will need to brake less and thus acceler-
ate less. Wherever possible, let the car roll
slowly to a stop, with a gear engaged (for in-
stance when you can see that the next traffic
lights are red). This takes advantage of the
engine braking effect, reducing wear on the brakes and tyres. Emissions and fuel con-
sumption will drop to zero due to the overrun
fuel cut-off.
Changing gear to save energy
An effective way of saving is to change
in ad-
vance to a higher gear. Running the engine at
high rpm in the lo w
er gears uses an unneces-
sary amount of fuel.
Manual gearbox : shift up from first to second
gear as soon as possible. In any case, we rec-
ommend that you change to a higher gear
upon reaching 2,000 rpm. Choosing the right
gear enables fuel savings. Select the highest
possible gear appropriate for the driving sit-
uation (the engine should continue function-
ing with cyclical regularity).
Automatic gearbox : accelerate gradually and
without reaching the “kick-down” position.
Avoid driving at high speed
Avoid travelling at top speed, whenever pos-
sible. Fuel consumption, emission of harmful
gases and noise pollution multiply dispropor-
tionately as speed is increased. Driving at
moderate speeds will help to save fuel.
Reduce idling time
In vehicles with the Start-Stop system idling
is automatically reduced. In vehicles without
the Start-Stop system it is worth switching off
the engine, for example, at level crossings and at traffic lights that remain red for long
periods of time. When an engine has reached
operating temperature, and depending on
the cylinder capacity, keeping it switched off
for a minimum of about 5 seconds already
saves more than the amount of fuel necessa-
ry for restarting.
The engine takes a long time to warm up
when it is idling. Mechanical wear and pollu-
tant emissions are also especially high dur-
ing this initial warm-up phase. It is therefore
best to drive off immediately after starting
the engine. Avoid running the engine at high
speed.
Regular maintenance
Regular servicing helps in saving fuel even
before the engine is started. A well-serviced
engine gives you the benefit of
improved fuel
efficiency as well as maximum reliability and
an enhanc
ed resale value. A badly serviced
engine can consume up to 10% more fuel
than necessary.
Avoid short journeys
The engine and catalytic converter need to
reach their optimal operating temperature in
order to minimise fuel consumption and
emissions.
A cold engine consumes a disproportionate
amount of fuel. The engine reaches its work-
ing temperature after about four kilometres
142

Advice
Advice
Care and maintenance
Accessories and modifications to the vehicle
Accessories, replacement parts and
repairs Always ask your dealer or specialist retailer
for advice before purchasing accessories and
replacement parts.
Your vehicle is designed to offer a high
standard of active and passive safety. For this
reason, we recommend that you ask a SEAT
Official Service for advice before fitting ac-
cessories or replacement parts. Your SEAT Of-
ficial Service has the latest information from
the manufacturer and can recommend acces-
sories and replacement parts which are suita-
ble for your requirements. They can also an-
swer any questions you might have regarding
official regulations.
We recommend you to use only
SEAT acces-
sories and
Genuine SEAT parts ®
. SEAT has
tested these parts and accessories for suita-
bility, reliability and safety. SEAT Official
Services have the necessary experience and
facilities to ensure that the parts are installed
correctly and professionally. Any
retro-fitted equipment which has a direct
effect on the vehicle and/or the way it is driv-
en, such as a cruise control system or elec-
tronically-controlled suspension, must be
approved for use in your vehicle and bear the
e mark (the European Union's authorisation
symbol).
If

any additional electrical devices are fitted
which do not serve to control the vehicle it-
self (for instance a refrigerator box, laptop or
ventilator fan, etc.), they must bear the 
sign (manufacturer conformity declaration in
the European Union). WARNING
Accessories, for example telephone holders
or cup holders, should never be fitted on the
covers, or within the working range of the air-
bags. Otherwise, there is a danger of injury if
the airbag is triggered in an accident. Technical modifications
Modifications must always be carried out ac-
cording to our specifications.
Unauthorised modifications to the electronic
components, software, wiring or data transfer
in the vehicle may cause malfunctioning. Due
to the way the electronic components are
linked together in networks, other indirect
systems may be affected by the faults. This
can seriously impair safety, lead to excessivewear of components, and also invalidate your
vehicle registration documents.
You will appreciate that your SEAT dealership
cannot be held liable for any damage caused
by modifications and/or work performed in-
correctly.
We therefore recommend that all work should
be performed by a SEAT Official Service using
genuine SEAT parts
®
. WARNING
Incorrectly performed modifications or other
work on your vehicle can lead to malfunctions
and cause accidents. Two-way radios and office equipment
Radio transmitters (fixed installation)
Any retrofit installations of radio transmitters
in the vehicle require prior approval. SEAT
generally authorises in-vehicle installations
of approved types of radio transmitters provi-
ded that:
●
The aerial is installed correctly.
● The aerial is installed on the exterior of the
vehicle (and shielded cables are used togeth-
er with non-reflective aerial trimming).
● The effective transmitting power does not
exceed 10 Watts at the aerial base.
182

Care and maintenance
A SEAT Official Service and specialised work-
shop will be able to inform you about options
for installing and operating radio transmitters
with a higher
transmitting power.
Mo
bile radio transmitters
Commercial mobile telephones or radio
equipment might interfere with the electron-
ics of your vehicle and cause malfunctions.
This may be due to:
● No external aerial.
● External aerial incorrectly installed.
● Transmitting power more than 10 W.
You must, therefore, do not operate portable
mobile telephones or radio equipment inside
the vehicle without a properly installed exter-
nal aerial ››› .
Please note also that the maximum range of
the equipment can only be achieved with an
external aerial.
B u

siness equipment
Retrofit installation of business or private
equipment in the vehicle is permitted, provi-
ded the equipment cannot interfere with the
driver's immediate control of the vehicle and
that any such equipment carries the  mark.
Any retrofit equipment that could influence
the driver's control of the vehicle must have a
type approval for your vehicle and must carry
the e mark. WARNING
Mobile telephones or radio equipment which
is operated inside the vehicle without a prop-
erly installed external aerial can create exces-
sive magnetic fields that could cause a health
hazard. Note
● The posterior fitting of electric and elec-
tronic equipment in this vehicle affects its li-
cence and could lead to the withdrawal of the
vehicle registration document under certain
circumstances.
● Please use the mobile telephone/radio op-
erating instructions. Care and cleaning
General information Regular and careful care helps to
maintain
the value of the vehicle. This may also be one
of the requirements for upholding any war-
ranty claims in the event of corrosion or paint
defects.
SEAT Official Services and specialist retailers
carry stocks of suitable car care materials.
Please follow the instructions for use on the
packaging. WARNING
● Cleaning products and other materials used
for car care can be damaging to your health if
misused.
● Always keep care products in a safe place,
out of the reach of children. Failure to comply
could result in poisoning. For the sake of the environment
● If possible, use environmentally friendly
products.
● The remains of car care products should not
be disposed of with ordinary household
waste. Vehicle exterior care
Washing the vehicle The longer substances such as insects, bird
droppings, resinous tree sap, road dirt, in-
dustrial deposits, tar, soot or road salt and
other aggressive materials remain on the ve-
hicle, the more damage they do to the paint-
work. High temperatures (for instance due to
strong sunlight) further intensify the corro-
sive effect.
After the period when salt is put on the roads
it is important to have the underside of the
vehicle washed thoroughly.
»
183
Technical specifications
Advice
Operation
Safety
The essentials

Care and maintenance
Camera sensors and lenses ●
Use a small brush to remove snow and a
de-icer spray to remove ice.
● Clean the sensors with a solvent-free prod-
uct and a soft, dry cloth.
● Moisten the camera lens using a standard
alcohol-based glass cleaning agent and
clean the lens with a dry cloth. In the active
lane assist*, the area in front of the lens is
norm al
ly cleaned with the windscreen wash-
er. CAUTION
● When you clean the vehicle with a pressure
washer:
–Stay a suitable distance from the sensors
on the front and rear bumpers.
– Do not clean the camera lenses or sur-
rounding area with the pressure washer.
● Never use warm or hot water to remove
snow and ice from the reverse camera lens,
as it could crack the lens.
● Never use abrasive cleaning agents on the
lens. Care and polishing
Care
Waxing protects the paintwork. It is time to
apply a
coat of good wax when water no lon- ger forms droplets
and rolls off the clean
paintwork.
Even if a wax solution is used regularly in the
vehicle washing tunnel, it is advisable to pro-
tect the paint with a hard wax coating at least
twice a year.
In the summer, you will find it is much easier
to remove dead insects (which accumulate
on the bumper and the front of the bonnet) if
the car has been treated with care products
recently .
P o

lishing
Polishing is only necessary if the paint has
lost its shine, and the gloss cannot be
brought back by putting on wax.
If the polish does not contain wax, a wax
product should be applied after polishing. CAUTION
● Do not use polishes and hard wax on pain-
ted parts with a matt finish or on plastic
parts.
● Do not apply paint polishes to the side trim
that runs around the panoramic roof and ends
on the windscreen. However, it can be treated
with hard wax. Trims
In respect for the environment, the silver-
plated trims on the body are made of pure
aluminium (they do not contain chrome).
Dirt or marks on the trim mouldings should
be removed with a cleaning product with a
neutr
a

l PH (do not use a chrome cleaner).
Body polish is also unsuitable for use on trim
mouldings. The intensive cleaning fluids of-
ten used before the car goes into a car wash
may contain alkaline substances, which can
cause dull or milky patches when they dry
out.
SEAT Official Services carry stocks of cleaning
products which have been tested for use on
your vehicle and are not harmful to the envi-
ronment.
Plastic parts Plastic parts are cleaned with a power wash-
er. If this is not sufficient, plastic parts
should only be treated with a special solvent-
free
plastic cleaning agent
. Do not
u
se paint-
work cleaners, polishes or wax on plastic
parts.
185
Technical specifications
Advice
Operation
Safety
The essentials

Care and maintenance
intervals, otherwise the exhaust tail pipe ma-
terial could be damaged. To remove impuri-
ties, do not use rim, paint or chrome cleaners
or other abrasive products. Clean the exhaust
tail pipes with cleaning products that are
suitable for stainless steel.
SEAT Official Services carry stocks of cleaning
products that have been tested and ap-
proved for use on your vehicle.
Care of the vehicle interior
Radio display/Easy Connect* and
control panel* The display can be cleaned with a soft cloth
and a professionally available “LCD cleaner”.
Moisten the cloth with a small amount of the
cleaning fluid.
The Easy Connect control panel* should first
be cleaned with a brush so that no dirt goes
into the device or between the keys and
housing. Next, we recommend cleaning the
Easy Connect control panel* using a cloth
dampened with water and washing-up liquid.
CAUTION
● To avoid scratching the screen, do not wipe
the display with a dry cloth.
● To avoid damage, ensure that no liquid
goes into the Easy Connect control panel*. Plastic and leatherette parts
Plastic parts and leatherette can be cleaned
with a damp cloth. If this is not sufficient,
plastic parts and leatherette should only be
treated with a special solvent-free plastic
c l
eaner.
Te
xtile covers and trim parts Textile covers and trim parts (e.g. seats, door
trim) should be cleaned regularly with a vac-
uum cleaner. This will remove surface dirt
which could otherwise be rubbed into the
textile material during use. Do not use steam
cleaners, as the steam could carry the dirt
deeper into the textile material.
Normal cleaning
We recommend that you use a soft sponge or
a commercially available lint-free, micro-fibre
cloth for normal cleaning. Only use brushes
on floor coverings and mats, as other textile
surfaces could become damaged.
In the case of normal surface dirt you can use
a foam cleaner. Use a sponge to spread the
foam on the textile surface and to work it into
the material lightly. However, make sure that
the textile material does not become soaking
wet. Then dab off the foam with a dry and ab-
sorbent cloth (e.g. a micro-fibre cloth) andvacuum off any residue once the surface is
completely dry.
Cleaning stains
Treat drink stains (such as coffee or fruit
juice, etc.) with a cleaning solution for deli-
cate fabrics. This solution should be applied
with a sponge. If the stains are difficult to re-
move, a washing paste can be applied direct-
ly onto the stain and worked into the fabric.
The surface will then have to be wiped with
clear water to remove any residue left by the
paste. To do so, use a damp cloth or sponge
and then dab the stain with an absorbent
cloth.
Remove chocolate or make-up stains with a
cleaning paste (for e.g., soft soap). Then re-
move the soap with water (wet sponge).
A spirit-based cleaner can be used to remove
grease, oil, lipstick or ball point pen. Then
dab the dissolved grease or colour particles
off with an absorbent cloth or similar. You
may also have to treat the stain once more
using washing paste and water.
If the covers or textile trim panels are badly
soiled we recommend that you have them
cleaned by a professional cleaning company
with a shampoo and spray.
»
187Technical specifications
Advice
Operation
Safety
The essentials