ECU Seat Leon 5D 2009 User Guide

Seat belts
24
– Adjust the seat and head restraint correctly.
– To fasten the belt, take hold of the latch plate and pull it slowly across your chest and lap.
– Insert the latch plate into the buckle for the appropriate seat and push it down until it is secure ly locked with an audible click
⇒ page 23, fig. 11 .
– Pull the belt to ensure that the latch plate is securely engaged in the buckle.The seat belts are equipped with an automatic retractor on the shoulder
s t ra p. Fu ll f r e e d o m o f m ov e m e n t i s p e r m i t t e d w h e n t h e s h o u l d e r b e l t is p ul le d
slowly. However, during sudden braking, during travel in mountains or bends
and during acceleration, the automatic retractor on the shoulder belt is
locked.
The automatic belt retractors on the front seats are fitted with belt tension
devices ⇒page 27.
WARNING
•An incorrectly worn seat belt web can cause severe injuries in the event
of an accident.•The seat belts offer best protection only when the backrests are in an
upright position and the seat belts have been fastened properly.•Never put the latch plate in the buckle of another seat. If you do this, the
seat belt will not protect you properly and the risk of injury is increased.•I f an o cc u pa n t is i n co r re c t l y b e l te d i n , t h e b e l t can n ot p ro te c t h i m o r h e r
properly. An incorrectly positioned belt web can cause extremely severe
injuries.•Always engage the retractor lock when you are securing a child seat in
group 0, 0+ or 1 ⇒page 44.
Seat belt position
Seat belts offer their maximum protection only when they are
properly positioned.
Fig. 12 Correct belt web
and head restraint posi-
tions, viewed from frontFig. 13 Correct belt web
and head restraint posi-
tions, viewed from side
Leon_EN.book Seite 24 Dienstag, 8. September 2009 5:25 17

Seat belts25
Safety First
Controls and equipment
Practical tips
Technical Data
The following features are available to adjust the seat belt in the shoulder
region:
•belt height adjustment for the front seats.•front seat height adjustment*.WARNING
•An incorrectly worn seat belt web can cause severe injuries in the event
of an accident.•The shoulder part of the seat belt must lie on the centre of the shoulder,
never across the neck. The seat belt must lie flat and snugly on the torso
⇒ page 24, fig. 12.•The lap part of the seat belt must lie across the pelvis, never across the
stomach. The seat belt must lie flat and snugly on the pelvis ⇒page 24,
fig. 13 . Pull the belt tight if necessary to take up any slack.•Read and observe the warnings ⇒page 22.
Pregnant women must also fasten their seat belts properly
The best protection for the unbo rn child is for the mother to
wear the seat belt properly at all times during the pregnancy.The seat belt provides maximum protection only when the belt web
is properly positioned ⇒page 24.
– Adjust the front seat and head restraint correctly ⇒page 10.
– Holding the latch plate, pull the belt evenly across your chest and as low as possible over the pelvis ⇒fig. 14 .
– Insert the latch plate into the buckle for the corresponding seat and push it down until it is securely locked with an audible click
⇒ .
– Pull the belt to ensure that the latch plate is securely engaged in the buckle.
Fig. 14 Positioning seat
belts during pregnancy
Leon_EN.book Seite 25 Dienstag, 8. September 2009 5:25 17

Seat belts27
Safety First
Controls and equipment
Practical tips
Technical Data
– Press the upper part of the shoulder belt guide and hold it in this
position ⇒page 26, fig. 16 .
– Move the shoulder belt guide up or down until you have adjusted the seat belt ⇒ page 24.
– After adjusting, pull the shoulder belt sharply to check that the catch on the shoulder belt guide is engaged securely.Incorrectly fastened seat belts
Incorrectly worn seat belts can cause severe injuries.Seat belts can provide optimal protection only if the belt web is
properly worn. The seat belts must be fastened exactly in the order
described in this chapter. An incorrect sitting position impairs
substantially the protection a seat belt offers and can lead to severe
or fatal injuries. The risk of severe or fatal injuries is especially
increased when a deploying airbag strikes an occupant who has
assumed an incorrect sitting position. As driver, you are responsible
for all vehicle occupants, especially children. Therefore:
– Never permit anyone to assume an incorrect sitting position in the vehicle while travelling ⇒.
WARNING
•An incorrectly worn seat belt increases the risk of severe injuries.•Before every trip, instruct your passengers to adjust their seat belts
properly and to wear them during the trip.•Read and always observe information and warnings concerning the use
of seat belts ⇒page 22.
Belt tension devicesFunction of the belt tension device
During a frontal collision, the seat belts on the front seats are
retracted automatically.The seat belts for the front occupants are equipped with belt tension devices.
Sensors will only trigger the belt tension devices during severe head-on,
lateral and rear collisions, and only if the seat belt is actually being worn. This
retracts and tightens the seat belts, reducing the forward motion of the occu-
pants.
The belt tension device can be triggered only once.
The belt tension devices will not be triggered in the event of a light frontal,
side or rear collision, if the vehicle overturns or in situations where no large
forces act on the front, side or rear of the vehicle.
Note
•If the belt tension devices are triggered, a fine dust is produced. This is
normal and it is not an indication of fire in the vehicle.•The relevant safety requirements must be observed when the vehicle or
components of the system are scrapped. A qualified workshop is familiar with
these regulations and will be pleased to pass on the information to you.Service and disposal of belt tension devicesThe belt tension devices are components of the seat belts that are installed
in the seats of your vehicle. If you work on the belt tension devices or remove
and install parts of the system when performing other repair work, the seat
Leon_EN.book Seite 27 Dienstag, 8. September 2009 5:25 17

Airbag system
30•Always properly adjust the front seats.
The danger of fitting a child seat on the front passenger seat
Rear-facing child seats must never be used on the front
passenger seat when the front passenger airbag is enabled.An enabled front airbag on the front passenger side is potentially a major
danger to a child. The front passenger seat is life threatening to a child if
he/she is transported in a rear-facing child seat. You should always transport
all children up to 12 years of age on the rear seat.
If a rear-facing child seat is secured to the front passenger seat, an inflating
airbag can strike it with such great force that critical or fatal injuries may
result.
Therefore we strongly recommend you to transport children on the rear seats.
That is the safest place for children in the vehicle. Alternatively, the front
passenger airbag can be disabled with a key-operated switch ⇒page 42.
When transporting children, use a child seat appropriate to the age and size
of each child ⇒page 44.
For those vehicles that do not include a key lock switch to turn the airbag off,
an Authorised Service Centre must be consulted.
WARNING
•If a child seat is secured to the front passenger seat, the risk to the child
of sustaining critical or fatal injuries in the event of an accident increases.•Never secure a rear-facing child seat to the front passenger seat if the
front passenger airbag is enabled. The child can suffer critical or fatal inju-
ries when the front passenger airbag is triggered.
•An inflating front passenger airbag can strike the rear-facing child seat
and hurl it with great force against the door, the roof or the backrest.•For those vehicles that do not include a key lock switch to turn the
airbag off, an Authorised Service Centre must be consulted.•If, under special circumstances, it is necessary to transport a child in a
rear-facing child seat on the front passenger seat, it is absolutely essential
that you observe the following safety measures:
−Disable the front passenger airbag ⇒page 42, “Deactivating
airbags*”.
− The child seat must be approved by the child seat manufacturer for
use on a front passenger seat with front or side airbag.
− Follow the installation instructions given by the child seat manufac-
turer and observe the safety instructions ⇒page 44, “Child safety”.
− Before properly installing the child seat, push the front passenger
seat completely backwards so that the greatest possible distance to
the front passenger airbag is ensured.
− Ensure that no objects prevent the front passenger seat from being
pushed completely back.
− The backrest of the front passenger seat must be in an upright
position.
Warning lamp for airbag and belt tension device system

This warning lamp monitors the airbag and belt tension
device system.The warning lamp monitors all airbags and belt tension devices in the
vehicle, including control units and wiring connections.
WARNING (continued)
WARNING (continued)
Leon_EN.book Seite 30 Dienstag, 8. September 2009 5:25 17

Child safety45
Safety First
Controls and equipment
Practical tips
Technical Data
Safety notes on using child seats
Proper use of child seats substantially reduces the risk of
injury in an accident!As the driver, you are responsible for any children you transport in
your vehicle.
– Protect your children by properly using appropriate child seats
⇒page 46.
– Always ensure that the belt webbing is properly positioned according to the instructions provided by the manufacturer of the
child seat.
– When travelling, do not allow children to distract you from traffic.
– Take breaks regularly during long trips. Take a break at least
every two hours.
WARNING
•Never install a child seat facing backwards (or rear-facing) on the front
passenger seat unless the front passenger airbag has been disabled. This
could lead to a risk of potentially fatal injuries to the child! However, if it is
necessary, in exceptional cases, to transport a child in the front passenger
seat, the front passenger airbag must always be disabled ⇒page 42,
“Deactivating airbags*”. If the passenger seat has a height adjustment
option, move it to the highest position.•For those vehicles that do not include a key lock switch to turn the
airbag off, an Authorised Service Centre must be consulted.•All passengers, especially children, must assume the proper sitting
position and be properly belted in while travelling.
•Never hold children or babies on your lap, this can result in potentially
fatal injuries to the child!•Never allow a child to be transported in a vehicle without being properly
secured, or to stand up or kneel on a seat while travelling. In an accident,
the child could be flung through the vehicle, causing possibly fatal injuries
to themselves and to the other passengers.•If children assume an improper sitting position when the car is moving,
they expose themselves to greater risk of injury in the event of sudden
braking manoeuvre or in an accident. This is particularly important if the
child is travelling on the front passenger seat and the airbag system is trig-
gered in an accident; as this could cause serious injury or even death.•A suitable child seat can protect your child!•Never leave an unsupervised child alone on a child seat or in the
vehicle.•Depending on weather conditions, it may become extremely hot or cold
inside the vehicle. This can be fatal.•Children who are less than 1.5 metres tall must not wear a normal seat
belt without a child restraint system, as this could cause injuries to the
abdominal and neck areas during a sudden braking manoeuvre or in an
accident.•Do not allow the belt webbing to become twisted or jammed, or to rub
on any sharp edges.•Incorrectly worn seat belts can cause injuries even in a minor collision
or in sudden braking manoeuvres.•The seat belt provides maximum protection only when the belt web is
properly positioned ⇒page 23, “Seat belts”.•Only one child may occupy a child seat ⇒page 46, “Child seats”.WARNING (continued)
Leon_EN.book Seite 45 Dienstag, 8. September 2009 5:25 17

Child safety49
Safety First
Controls and equipment
Practical tips
Technical Data
Securing child seatsWays to secure a child seat
A child seat can be secured differently on the rear seat and on
the front passenger seat.You can secure a child seat to the rear seat or front passenger seat in the
following ways:•Child seats in groups 0 to 3 can be secured with a seat belt.•Child seats for groups 0, 0+ and 1 with the “ISOFIX” system can be
secured, without fastening seat belts, with the “ISOFIX” securing rings
⇒ page 49.
U: Suitable for universal approved restraining systems for use in this age category (universal retention systems are those fitted using the adult
seat belt).
*: Move the passenger seat as far to rear as possible, as high as possible and always deactivate the airbag.
L: Suitable for retention systems using the “ISOFIX” anchors.
WARNING
•When travelling, children must be secured in the vehicle with a
restraint system suitable for age, weight and size.•Never install a child seat facing backwards (or rear-facing) on the front
passenger seat unless the front passenger airbag has been disabled. This
could lead to a risk of potentially fatal injuries to the child! However, if it is
necessary, in exceptional cases, to transport a child in the front passenger
seat, the front passenger airbag must always be disabled ⇒page 42,
“Deactivating airbags*” and move the seat to its highest position, in case
it has this adjustment.•Read and always observe information and warnings concerning the use
of child seats ⇒ page 45.
Securing child seat with the “ISOFIX” system
The child seat with “ISOFIX” system can be secured quickly,
easily and safely on the rear outer seats using the system
Category
Weight
Seat locations
Front
passenger
Rear outer
Rear centre
Group 0
<10 kg
U*
U/L
U
Group 0+
<13 kg
U*
U/L
U
Group 1
9-18 kg
U*
U/L
U
Group 2 / 3
15-36 kg
U*
U
U
Fig. 30 ISOFIX securing
rings
Leon_EN.book Seite 49 Dienstag, 8. September 2009 5:25 17

Child safety
50
When removing or fitting the child seat, please be sure to follow the
manufacturer's instructions.
– Move the seat as far to rear as it will go.
– Press the child seat onto the “ISOFIX” retaining rings until the child seat can be heard to engage securely.
– Pull on both sides of the child seat to ensure that it is secure.Two “ISOFIX” retaining rings are fitted on each rear seat. In some vehicles, the
rings are secured to the seat frame and, in others, they are secured to the rear
floor. The access to “ISOFIX” rings is between the rear back rest and the seat.
Child seats with “ISOFIX” mountings are available in your Authorised Service
Centres.
WARNING
•The retaining rings are designed only to be used with “ISOFIX” child
seats.•Never secure child seats without th e “ISOFIX” system, retaining belts
or objects to the fastening rings – this can result in potentially fatal injuries
to the child.•Ensure that the child seat is secured correctly to the “ISOFIX”
anchors.
Leon_EN.book Seite 50 Dienstag, 8. September 2009 5:25 17

Unlocking and locking
94
Note•While the driver's door is open, the vehicle can not be locked with the
remote control. This avoids the user from forgetting his key inside the vehicle.•If the driver's door is unlocked with the key shaft, only the driver's door is
unlocked, the rest of the doors remain locked. When the ignition is switched
on, the door "safe" deadlock is deactivated (although the doors remain
locked) and the central locking button is activated. See ⇒page 102.•If the central locking or anti-theft alarm are faulty, the driver's door
warning lamp remains lit for approx. 30 seconds after locking the vehicle.•For anti-theft security, only the driver's door is fitted with a lock cylinder.Safety system “Safe*”
The "safe" deadlock makes it more difficult to break into the
vehicle because the door release lever and the central locking
button are not active (depending upon country).Activating deadlock
–Press once the locking button on the remote control. or
–Turn the key once in the driver's door lock to lock. A warning lamp
in the driver door flashes to indicate the "safe" deadlock is
working. The warning lamp flashes for approx. two seconds at
short intervals and then more slowly. Deactivating deadlock when the vehicle is locked
–Press
twice the locking button on the remote control within
two seconds. The vehicle is locked without activating the dead-
lock. The driver's door warnin g lamp flashes for approx. two
seconds and then goes out. After approx. 30 seconds it starts
flashing again.
The doors can be unlocked and opened from the inside if the "safe" deadlock
has not been activated. You will have to pull the door release lever once.
When the "safe" deadlock is off, the antitheft alarm* ⇒page 102 remains
active. The vehicle interior monitoring system* and the anti-tow system are
deactivated*.
WARNING
Nobod y s hould remain in the vehicle if t he a nt i- tow s ystem d ead lock mech-
anism has been activated. It is not possible to open the doors from the
inside. Locked doors could make it more difficult to assist vehicle occu-
pants in the event of an accident. People could become trapped inside in an
emergency.Selective unlocking system*
T h is sy ste m all ow s t o u nl o ck eit h er j u st t h e d r ive r ' s d o o r o r a ll
the vehicle.Using the remote control, press the unlock button on the remote once. The
“Safe” system for all the vehicle is deactivated, only the driver's door is
unlocked and both the alarm and the light indicator are also turned off.



Leon_EN.book Seite 94 Dienstag, 8. September 2009 5:25 17

Unlocking and locking
96Central locking button
The central locking button allows you to lock and unlock the
vehicle from the inside.Locking the vehicle
–Press the button ⇒.
Unlocking the doors
–Press button .The central locking button is still operative when the ignition is switched off.
Except when the "safe" security system is activated.
Please note the following if you lock your vehicle with the central locking
button:•Safety reasons make not be possible to open the doors or the tailgate
from the outside (for instance, when stopped at a traffic light).
•The driver or front passenger door cannot be locked if any of the vehicle
doors (except the tailgate) are open. This avoids the user from forgetting his
key inside the vehicle.•Repeated operation of the central locking will deactivate the central
locking button for 30 seconds. Once this time has passed, the button may be
used once more.•There is a danger of leaving the key inside the vehicle if the vehicle is
locked by the central locking button when the driver's door is closed and any
of the rear doors open. On closing any of the rear doors, the vehicle locks and
the keys remain inside it.•All doors can be locked separately from inside the car. Do this by pulling
the door release lever once.WARNING
•If the vehicle is locked, children and disabled people may be trapped
inside it.•The central locking button is not operative in the following cases:•When the vehicle is locked from the outside (by the remote or the key).•While the ignition is not activated after unlocking the door lock cylinder
with the key.Note
•Vehicle locked, button amber colour•Vehicle unlocked, button redUnlocking and locking - Manual personalisation Activating selective unlocking
With the driver's door open, turn the key to unlock for approx. 3 s.
Fig. 58 Detail of the
centre console: central
locking system button



Leon_EN.book Seite 96 Dienstag, 8. September 2009 5:25 17

Unlocking and locking
102Anti-theft alarm system*Description of anti-theft alarm system*
The anti-theft alarm triggers if unauthorised movements are
detected around the vehicle.The anti-theft alarm makes it more difficult to break into the vehicle or steal
it. Audible and visible alarms are triggered if the car is opened using the key,
or if unauthorised access to the vehicle is forced.
The anti-theft alarm system is automatically connected on locking the
vehicle. The system is then primed.
When does the system trigger an alarm?
The system triggers an alarm if the following unauthorised actions are carried
out when the car is locked:•Mechanical opening of the vehicle with the vehicle key•Opening a door•Opening the bonnet•Opening the tailgate•Switching on the ignition•Movements in the vehicle•Undue manipulation of the alarm•Battery handling
The acoustic signals sound and the indicators flash for approx. 30 seconds.
This may be repeated up to 10 times depending on the country.
Opening the doors mechanically (emergency opening)
If the remote control function fails, you will have to use the key to unlock the
car. This is done as follows:
•Unfold the key by pressing the button shown by the (arrow).•Use the lock on the driver door to unlock the vehicle. The anti-theft alarm
system remains active, but an alarm is not triggered immediately.•Switch on the ignition within 15 seconds. When the ignition is switched
on, the electronic immobiliser recognises a valid vehicle key and deactivates
the anti-theft alarm system. If you do not switch on the ignition within 15
seconds, the alarm is triggered.
How to switch the alarm off
When the vehicle is unlocked via the unlocking button of the remote control
or when the key is inserted in the ignition lock.Note
•If, after the alarm goes off, access is gained to a second secured zone
(e.g. the tailgate is opened after a door has been opened), the warning signal
is triggered again.•Vehicle monitoring remains active even if the battery is disconnected or
not working for any reason.•The alarm is triggered immediately if one of the battery cables is discon-
nected while the alarm system is active.Volumetric sensor*
Monitoring or control function incorporated in the anti-theft
alarm* which detects unauthorized vehicle entry by means of
ultrasound.The system consists of 3 sensors, 2 emitters and a receptor.
Leon_EN.book Seite 102 Dienstag, 8. September 2009 5:25 17