2011 Seat Leon 5D ECU

Table of Contents
Manual structure . . . . . . . . . . . . . . . . . . . . 5
Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Safety First . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Safe driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Brief introduction . . . . . . . . . . . . . . . . . . . . . . . . . 7
Proper sitting position for occupants . . . . . . . . . 10
Pedal area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Storing objects . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Brief introduction . . . . . . . . . . . . . . . . . . . . . . . . . 19
Why wear seat belts? . . . . . . . . . . . . . . . . . . . . . . 21
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Seat belt tensioners . . . . . . . . . . . . . . . . . . . . . . . 29
Airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Brief introduction . . . . . . . . . . . . . . . . . . . . . . . . . 30
Front airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Side airbags* . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Curtain airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Deactivating airbags* . . . . . . . . . . . . . . . . . . . . . . 44
Child safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Brief introduction . . . . . . . . . . . . . . . . . . . . . . . . . 46
Child seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Securing child seats . . . . . . . . . . . . . . . . . . . . . . . 51 Operating Instructions
. . . . . . . . . . . . . 55
Cockpit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
LPG system* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Digital instrument panel display . . . . . . . . . . . . . 61
Instrument panel menus* . . . . . . . . . . . . . . . . . . . 68
Warning lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Steering wheel controls . . . . . . . . . . . . . . . . . . . . 91
General information . . . . . . . . . . . . . . . . . . . . . . . 91
Audio system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Radio navigation system . . . . . . . . . . . . . . . . . . . 95
Unlocking and locking . . . . . . . . . . . . . . . . . . . . . 97
Central locking . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Radio frequency remote control . . . . . . . . . . . . . . 104
Anti-theft alarm system* . . . . . . . . . . . . . . . . . . . 106
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Sliding/tilting sunroof* . . . . . . . . . . . . . . . . . . . . 112
Lights and visibility . . . . . . . . . . . . . . . . . . . . . . . . 115
Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Interior lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Visibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Windscreen wipers . . . . . . . . . . . . . . . . . . . . . . . . 125
Rear-view mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 129
Seats and storage compartments . . . . . . . . . . 132
The importance of correct seat adjustment . . . . . 132
Head restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Rear seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Storage compartment . . . . . . . . . . . . . . . . . . . . . . 138 Ashtrays*, cigarette lighter* and electrical
sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
First-aid kit, warning triangle, fire extinguisher . 142
Luggage compartment . . . . . . . . . . . . . . . . . . . . . 143
Air conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Climatic* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
2C-Climatronic* . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Ignition lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Starting and stopping the engine . . . . . . . . . . . . 160
Driving with LPG* . . . . . . . . . . . . . . . . . . . . . . . . . 163
Start-Stop function* . . . . . . . . . . . . . . . . . . . . . . . 164
Manual gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Automatic gearbox* / DSG automatic gearbox* . 168
Handbrake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Acoustic parking aid system* . . . . . . . . . . . . . . . 175
Cruise speed* (Cruise control system) . . . . . . . . 178
Practical Tips . . . . . . . . . . . . . . . . . . . . . . . . . 182
Intelligent technology . . . . . . . . . . . . . . . . . . . . . 182
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Anti-lock brake system and traction control M-
ABS (ABS and ASR (TCS)) . . . . . . . . . . . . . . . . . . . 183
Electronic Stability Control ESC (ESP) * . . . . . . . . 184
Driving and the environment . . . . . . . . . . . . . . . 189
Running-in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Exhaust gas purification system . . . . . . . . . . . . . 190
Economical and environmentally friendly driving 191
Driving abroad . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
3
Table of Contents

8Safe driving
The safety equipment mentioned above works together to provide you and
your passengers with the best possible protection in the event of an acci-
dent. However, these safety systems can only be effective if you and your
passengers are sitting in a correct position and use this equipment proper-
ly.
Therefore, information is provided about why this equipment is so impor-
tant, how it protects you, what you have to consider when using it and how
you and your passengers can achieve the greatest possible benefit from the
safety equipment fitted. This manual includes important warnings that you
and your passengers should note in order to reduce the risk of injury.
Safety is everyone's business! 
Before starting every trip
The driver is responsible for the safety of the passengers
and the safe operation of the vehicle.
For your own safety and the safety of your passengers, always note
the following points before every trip:
– Make sure that the vehicle's lights and turn signals are working
properly.
– Check tyre pressure.
– Ensure that all windows provide a clear and good view of the
surroundings.
– Make sure all luggage is secured ⇒ page 16.
– Make sure that no objects can interfere with the pedals. –
Adjust front seat, head restraint and mirrors properly according
to your size.
– Ensure that the passengers in the rear seats always have the
head restraints in the in-use position ⇒ page 14
– Instruct passengers to adjust the head restraints according to
their height.
– Protect children with appropriate child seats and properly ap-
plied seat belts ⇒ page 46.
– Assume the correct sitting position. Instruct your passengers al-
so to assume a proper sitting position. ⇒  page 10.
– Fasten your seat belt securely. Instruct your passengers also to
fasten their seat belts properly. ⇒ page 19. 
What affects driving safety?
Driving safety is largely determined by your driving style
and the personal behaviour of all occupants. As a driver, you are responsible for yourself and your passengers.
When your concentration or driving safety is affected by any cir-
cumstance, you endanger yourself as well as others on the road
⇒ 
, for this reason:
– Always pay attention to traffic and do not get distracted by pas-
sengers or telephone calls.
– Never drive when your driving ability is impaired (e.g. by medi-
cation, alcohol, drugs). 

11
Safe driving
– Fasten your seat belt securely ⇒ page 19.
– Keep both feet in the footwell so that you have the vehicle un-
der control at all times.
Adjustment of the driver seat ⇒ page 132.
WARNING
● An incorrect sitting position of the driver can lead to severe injuries.
● Adjust the driver seat so that there is at least 25 cm distance between
the centre of the chest and the centre of the steering wheel ⇒ fig. 1. If
you are sitting closer than 25 cm, the airbag system cannot protect you
properly.
● If your physical constitution prevents you from maintaining the mini-
mum distance of 25 cm, contact a specialised workshop. The workshop
will help you decide if special specific modifications are necessary.
● When driving, always hold the steering wheel with both hands on the
outside of the ring at the 9 o'clock and 3 o'clock positions. This reduces
the risk of injury when the driver airbag is triggered.
● Never hold the steering wheel at the 12 o'clock position, or in any
other manner (e.g. in the centre of the steering wheel). In such cases, if
the airbag is triggered, you may sustain injuries to the arms, hands and
head.
● To reduce the risk of injury to the driver during sudden braking ma-
noeuvres or an accident, never drive with the backrest tilted far back! The
airbag system and seat belts can only provide optimal protection when
the backrest is in an upright position and the driver is wearing his or her
seat belt properly. The further the backrests are tilted to the rear, the
greater the risk of injury due to incorrect positioning of the belt web or to
the incorrect sitting position!
● Adjust the head restraint properly to achieve optimal protection.
 Proper sitting position for front passenger
The front passenger must sit at least 25 cm away from the
dash panel so that the airbag can provide the greatest pos-
sible protection in the event that it is triggered.
For your own safety and to reduce the risk of injury in the event of
an accident, we recommend the following adjustments for the front
passenger:
– Move the front passenger seat back as far as possible ⇒ 
.
– Move the backrest to an upright position so that your backrests
completely against it.
– Adjust the head restraint so that its upper edge is at the same
level as the top of your head, or as close as possible to the
same level as the top of your head ⇒ page 13.
– Keep both feet in the footwell in front of the front passenger
seat.
– Fasten your seat belt securely ⇒ page 19.
It is possible to deactivate the passenger airbag in exceptional circumstan-
ces ⇒ page 26.
Adjusting the front passenger seat ⇒ page 135. 
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12Safe driving
WARNING
● An incorrect sitting position of the front passenger can lead to severe
injuries.
● Adjust the front passenger seat so that there is at least 25 cm be-
tween your chest and the dash panel. If you are sitting closer than 25 cm,
the airbag system cannot protect you properly.
● If your physical constitution prevents you from maintaining the mini-
mum distance of 25 cm, contact a specialised workshop. The workshop
will help you decide if special specific modifications are necessary.
● Always keep your feet in the footwell when the vehicle is moving;
never rest them on the dash panel, out the window or on the seat. An in-
correct sitting position exposes you to an increased risk of injury in case
of a sudden braking or an accident. If the airbag is triggered, you could
sustain severe injuries due to an incorrect sitting position.
● To reduce the risk of injury to the front passenger in events such sud-
den braking manoeuvres or an accident, never travel with the backrest
tilted far back! The airbag system and seat belts can only provide optimal
protection when the backrest is in an upright position and the front pas-
senger is wearing his or her seat belt properly. The further the backrests
are tilted to the rear, the greater the risk of injury due to incorrect posi-
tioning of the belt web or to the incorrect sitting position!
● Adjust the head restraint properly in order to achieve maximum pro-
tection.
 Correct sitting position for passengers in the rear seats
Passengers in the rear seats must sit up straight, keep their
feet on the footwells, have the head restraints positioned for
use and wear their seat belts properly.
To reduce the risk of injury in the event of a sudden braking ma-
noeuvre or an accident, passengers on the rear bench seat must
consider the following:
–
Adjust the head restraint to the correct position. ⇒ page 14
– Keep both feet in the footwell in front of the rear seat.
– Fasten your seat belt securely ⇒ page 19.
– Use an appropriate child restraint system when you take chil-
dren in the vehicle ⇒ page 46.
WARNING
● If the passengers on the rear seat are not sitting properly, they could
sustain severe injuries.
● Adjust the head restraint properly in order to achieve maximum pro-
tection.
● Seat belts can only provide optimal protection when backrests are in
an upright position and the passengers are wearing their seat belts prop-
erly. If passengers on the rear seat are not sitting in an upright position,
the risk of injury due to incorrect positioning of the seat belt increases.


16Safe driving
Pedal area
Pedals
The operation of all pedals must never be impaired by ob-
jects or floor mats. – Ensure that you can always press the accelerator, brake and
clutch pedals unimpaired to the floor.
– Ensure that the pedals can return unimpaired to their initial po-
sitions.
Use only floor mats which leave the pedal area free and can be securely fas-
tened on the footwell.
If a brake circuit fails, the brake pedal must be pressed down thoroughly in
order to stop the vehicle.
Wearing suitable shoes
Always wear shoes which support your feet properly and give you a good
feeling for the pedals.
WARNING
● Restricting pedal operation can lead to critical situations while driv-
ing.
● Never place objects on the driver footwell. An object could move into
the pedal area and impair pedal operation. In the event of a sudden driv-
ing or braking manoeuvre, you will not be able to operate the brake,
clutch or accelerator pedal. Risk of accident!
 Floor mats on the driver side
Only floor mats may be used which can be securely fastened
in the footwell and do not impair operation of the pedals.
– Ensure that the floor mats are securely fastened during the trip
and do not obstruct the pedals ⇒ 
.
Only use floor mats which leave the pedals clear and which are secured to
prevent them from slipping. You can obtain suitable floor mats from a speci-
alised dealership. Fasteners* for floor mats are fitted in the footwells.
WARNING
● If the pedals are obstructed, an accident may occur. Risk of serious
injuries.
● Ensure that the floor mats are always securely attached.
● Never lay or fit floor mats or other floor coverings over the original
floor mats. This would reduce the pedal area and could obstruct the ped-
als. Risk of accident.

Storing objects Loading the luggage compartment
All luggage and other loose objects must be safely secured
in the luggage compartment.
Unsecured objects which shift back and forth could impair the driv-
ing safety or driving characteristics of the vehicle by shifting the
centre of gravity. 

17
Safe driving
– Distribute the load evenly in the luggage compartment.
– Place heavy objects as far forward as possible in the luggage
compartment.
– Place the heavy objects first.
– Secure heavy objects to the fastening rings ⇒ page 17.
WARNING
● Loose luggage and other objects in the luggage compartment could
cause serious injuries.
● Always stow objects in the luggage compartment and secure them on
the fastening rings.
● Use suitable straps to secure heavy objects.
● During sudden manoeuvres or accidents, loose objects can be thrown
forward, injuring vehicle occupants or passers-by. This increased risk of
injury will be further increased if a loose object is struck by an inflating
airbag. If this happens, objects can be transformed into “missiles”. Risk
of fatal injury.
● Please note that the centre of gravity may shift when transporting
heavy objects; this may affect the vehicle's handling and lead to an acci-
dent. Therefore, it is essential to adjust your speed and driving style ac-
cordingly, to avoid accidents.
● Never exceed the allowed axle weights or allowed maximum weight.
If the allowed axle load or the allowed total weight is exceeded, the driv-
ing characteristics of the vehicle may change, leading to accidents, inju-
ries and damage to the vehicle.
● Never leave your vehicle unattended, especially when the tailgate is
open. Children could climb into the luggage compartment, closing the
door behind them; they will be trapped and run the risk of death.
WARNING (Continued)
● Never allow children to play in or around the vehicle. Close and lock
all the doors and tailgate when you leave the vehicle. Before you lock the
vehicle, make sure that there are no adults or children in the vehicle.
● Never transport passengers in the luggage compartment. All passen-
gers must have their seat belt fastened ⇒ page 19.
Note
● Air circulation in the vehicle helps reduce fogging of the windows. Used
air escapes through ventilation slits in the side trim of the luggage compart-
ment. Ensure that the ventilation slits are never covered.
● Straps for securing the load to the fastening rings are commercially
available. 
Fastening rings*
There can be four fastening rings in the luggage compart-
ment for fastening luggage and other objects.
– Always use suitable and undamaged straps to secure luggage
and other objects to the fastening rings ⇒ 
in Loading the lug-
gage compartment on page 17.
– Pull up the fastening rings to attach the straps.
During a collision or an accident, even small and light objects can build up
so much energy that they can cause very severe injuries. The amount of ki-
netic energy depends on the speed of the vehicle and the weight of the ob-
ject. The most significant factor, however, is the speed of the vehicle.
Example: An object weighing 4.5 kg is lying unsecured in the vehicle. Dur-
ing a frontal collision at a speed of 50 km/h, this object generates a force
corresponding to 20 times its weight. That means that the effective weight 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

18Safe driving
of the object increases to about 90 kg. You can imagine the severity of the
injuries which might be sustained if this object strikes an occupant as it
flies through the passenger compartment. This increased risk of injury will
be further increased if a loose object is struck by an inflating airbag.
WARNING
● If pieces of luggage or other objects are secured to the fastening
rings with inappropriate or damaged retaining cords, injuries could be
sustained in the event of braking manoeuvres or accidents.
● To prevent pieces of luggage or other objects from flying forward, al-
ways use appropriate retaining cords which are secured to the fastening
rings.
● Never secure a child seat on the fastening rings.


19
Seat belts
Seat belts
Brief introduction Before driving: remember your seat belt!
Wearing a seat belt properly can save your life!
In this chapter you will learn the importance of wearing seat belts,
how they work and how to properly fasten, adjust and wear them.
– Read and consider all the information as well as the warnings in
this chapter.
WARNING
● If seat belts are worn incorrectly or not at all, the risk of severe inju-
ries increases.
● Properly worn seat belts can reduce severe injuries in case of sudden
braking manoeuvres or accidents. For safety reasons, you and your pas-
sengers must always wear the seat belts properly while the vehicle is
moving.
● Pregnant women or people with physical disabilities must also use
seat belts. Like all other passengers, these people can also sustain se-
vere injuries if they are not wearing their seat belts properly.

Number of seats
Your vehicle has five seats, two in the front and three in the rear. Each seat
is equipped with a three-point seat belt. In some versions, your vehicle is approved
only for four seats. Two front
seats and two rear seats.
WARNING
● More people than available seats must never be transported in your
vehicle.
● Every passenger in the vehicle must properly fasten and wear the
seat belt belonging to his or her seat. Children must be protected with an
appropriate child restraint system.

Seat belt warning lamp* 
The warning lamp acts as a reminder to the driver to fasten
the seat belt.
Before starting the vehicle:
– Fasten your seat belt securely.
– Instruct your passengers to fasten their seat belts properly be-
fore driving off.
– Protect children by using a child seat according to the child's
height and weight. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications