2011 Seat Leon 5D service

29
Seat belts
Seat belt tensioners
Function of the seat belt tensioner
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 tensioners.
Sensors will only trigger the belt tensioners during severe head-on, lateral
and rear collisions, and only if the seat belt is actually being worn. This re-
tracts and tightens the seat belts, reducing the forward motion of the occu-
pants.
The seat belt tensioner can be triggered only once.
The seat belt tensioners 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 seat belt tensioners 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. Specialised workshops are famili-
ar with these regulations, which are also available to you. 
Service and disposal of belt tensioners
The belt tensioners are components of the seat belts that are installed in
the seats of your vehicle. If you work on the belt tensioners or remove and
install parts of the system when performing other repair work, the seat belt
may be damaged. The consequence may be that, in the event of an acci-
dent, the belt tensioners function incorrectly or not at all. So that the effectiveness of the seat belt tensioner is not reduced and that
removed parts do not cause any injuries or environmental pollution, regula-
tions, which are known to the specialised workshops, must be observed.
WARNING
● Improper use or repairs not carried out by qualified mechanics in-
crease the risk of severe or fatal injuries. The belt tensioners may fail to
trigger or may trigger in the wrong circumstances.
● Never attempt to repair, adjust, remove or install parts of the belt ten-
sioners or seat belts.
● The seat belt tensioner, seat belt and automatic retractor cannot be
repaired.
● Any work on the belt tensioners and seat belts, including the removal
and refitting of system parts in conjunction with other repair work, must
be performed by a specialised workshop only.
● The belt tensioners will only provide protection for one accident and
must be changed if they have been activated.

Safety FirstOperating InstructionsPractical TipsTechnical Specifications

31
Airbag system
WARNING (Continued)
● To reduce the risk of injury from an inflating airbag, always wear the
seat belt properly ⇒ page 19.
● Always adjust the front seats properly.

The danger of fitting a child seat on the front passenger
seat
Rear-facing child seats must never be used on the front pas-
senger seat when the front passenger airbag is enabled. The front passenger airbag is a serious risk for a child if it is activated. The
front passenger seat is life threatening to a child if he/she is transported in
a rear-facing child seat. Children up to 12 years old should always travel 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 force that it can cause critical or fatal injuries.
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 44. When transporting children, use a child seat appropriate to
the age and size of each child ⇒ page 46.
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 in-
creases.
● 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 in-
juries if 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 back-
rest.
● 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 es-
sential that you observe the following safety measures:
–Deactivate the front passenger airbag ⇒ page 44, 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 manu-
facturer and observe the safety instructions ⇒ page 46, Child safe-
ty.
– 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 po-
sition.
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Safety FirstOperating InstructionsPractical TipsTechnical Specifications

32Airbag system
Warning lamp for airbag and seat belt tensioner 
This warning lamp monitors the airbag and seat belt ten-
sioner system.
The warning lamp monitors all airbags and seat belt tensioners in the vehi-
cle, including control units and wiring connections.
Monitoring of airbag and belt tensioner system
Both the airbag and belt tensioner systems operation is constantly moni-
tored electronically. Each time the ignition is switched on, the warning lamp
 lights for several seconds and the display in the instrument panel*
shows AIRBAG / TENSIONER .
The system must be checked when the warning lamp  :
● does not light up when the ignition is switched on,
● after the ignition is switched on, it turns off after 4 seconds,
● turns off and then lights up again after the ignition is switched on,
● lights up or flashes while the vehicle is moving.
In the event of a malfunction, the warning lamp remains on continuously. In
addition, depending on the malfunction, a fault message appears in the
display of the instrument panel for approx. 10 seconds and a short acoustic
signal is given. In this event, you should have a specialised workshop check
the system immediately.
If any of the airbags are de-activated by the Authorised Service Centre, the
indicator lights for several seconds more after the verification and will turn
off if there is no fault.WARNING
● If there is a malfunction, the airbag and belt tensioner system cannot
properly perform its protective function.
● If a malfunction occurred, have the system checked immediately by a
specialised workshop. Otherwise, in the event of an accident, the airbag
system and belt tensioners may not be triggered, or may not be triggered
correctly.

Repairs, maintenance and disposal of airbags
The parts of the airbag system are installed in various places in your vehi-
cle. If work is carried out on the airbag system or parts have to be removed
and fitted on the system when performing other repair work, parts of the air-
bag system may be damaged. In the event of an accident this could cause
the airbag to inflate incorrectly or not inflate at all.
The relevant safety requirements must be observed when the vehicle or
components of the airbag are scrapped. Specialised workshops and vehicle
disposal centres are familiar with these requirements.
WARNING
● If repairs are not carried out by a professional, or if the airbags are
used incorrectly, the risk of severe or fatal injuries is increased. The air-
bags may fail to inflate, or could inflate in the wrong circumstances.
● Do not cover or stick anything on the steering wheel hub or the sur-
face of the airbag unit on the passenger side of the dash panel, and do
not obstruct or modify them in any way.
● It is important not to attach any objects such as cup holders or tele-
phone mountings to the surfaces covering the airbag units. 

33
Airbag system
WARNING (Continued)
● To clean the steering wheel or dash panel, you may use only a dry or a
water-moistened cloth. Never clean the dash panel and the airbag mod-
ule surface with cleaners containing solvents. Solvents cause the surface
to become porous. If the airbag triggered, plastic parts could become de-
tached and cause injuries.
● Never attempt to repair, adjust, remove or install parts of the airbag
system.
● Any work on the airbag system or removal and installation of the air-
bag components for other repairs (such as repairs to the steering wheel)
should be performed only by a specialised workshop. Specialised work-
shops have the necessary tools, repair information and qualified person-
nel.
● We strongly recommend you to go to a specialised workshop for all
work on the airbag system.
● Never attempt to alter the front bumper or the body.
● The airbags provide protection for just one accident; replace them
once they have deployed.
For the sake of the environment
The airbags, which are a special type of waste, must be disposed of through
an authorised service, because they contain pyrotechnic elements. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

42Airbag system
● the vehicle turns over
● there is a minor side collision
WARNING
If a fault has occurred in the airbag system, have the system checked im-
mediately by a specialised workshop. Otherwise there is a danger that
during a collision, the system may fail to trigger, or not trigger correctly.

Operation of curtain airbags
Fully inflated airbags reduce the risk of head or chest injury
in a side collision.
Fig. 24 Deployed curtain
airbags
During some side collisions the curtain airbag is triggered on the impact
side of the vehicle ⇒ fig. 24.
In certain types of accident the front, side and curtain airbags may be trig-
gered together. When the system is triggered, the airbag is filled with propellant gas. In the
process, the curtain airbag covers the side windows and door pillars.
The airbags deploy extremely rapidly, within thousandths of a second, to
provide additional protection in the event of an accident. A fine dust may
develop when the airbag deploys. This is normal and it is not an indication
of fire in the vehicle.
The fully deployed airbags cushion the movement of the front occupants
and help to reduce the risk of injury to the upper body.
The special design of the airbag allows the controlled escape of the propel-
lant gas when an occupant puts pressure on the bag. Thus, the head and
chest are surrounded and protected by the airbag.

Safety notes on the operation of the curtain airbag system
If you use airbags correctly, they can considerably reduce
the risk of injury in many kinds of accident.
WARNING
● In order for the side airbags to provide their maximum protection, the
prescribed sitting position must always be maintained with seat belts
fastened while travelling.
● For safety reasons, the curtain airbag must be disconnected in those
vehicles fitted with a passenger compartment separation screen. See an
Authorised Service Centre to make this adjustment.
● There must be no other persons, animals or objects between the oc-
cupants of the outer seats and the deployment space of the curtain air-
bags so that the curtain airbag can deploy without restriction and pro-
vide the greatest possible protection. Therefore, sun blinds which have 

45
Airbag system
WARNING
● The driver is responsible for the proper position of the key-operated
switch.
● You should deactivate the front passenger airbag only if you have to
use a rear-facing child seat in exceptional cases. ⇒ page 46, Child safe-
ty.
● For those vehicles that do not include a key lock switch to turn the
airbag off, an Authorised Service Centre must be consulted.
● Never install a child seat facing backwards on the front passenger
seat unless the front passenger airbag has been disabled. Otherwise,
there is a risk of death. If under exceptional circumstances it is necessary
to transport a child in a rear-facing child seat on the front passenger
seat, you must always disable the front passenger airbag.
● As soon as the child seat is no longer needed on the front passenger
seat, enable the front passenger airbag again.
● Only deactivate the passenger airbag when the ignition is off, other-
wise a fault may occur in the airbag system, which could cause the airbag
to not deploy properly or not deploy at all.
● When the passenger airbag is deactivated, if the warning lamp AIR-
BAG OFF is not continuously lit up, there may be a fault in the airbag sys-
tem:
–Have the airbag system inspected immediately by a specialised
workshop.
– Do not use a child seat on the front passenger seat! The front pas-
senger airbag could be triggered despite the fact that there is a fault
in the system and, as a result, a child could sustain serious or fatal
injuries.
– It is unpredictable whether the front passenger airbag will deploy
in the event of an accident. Warn all your passengers of this.
● When using the ignition key to activate/deactivate the front passen-
ger airbag, only the front passenger airbag will be activated/deactivated.
The side airbag and head airbag on the passenger side will remain ac-
tive.

Safety FirstOperating InstructionsPractical TipsTechnical Specifications

47
Child safety
WARNING
● Never install a child seat facing backwards 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 nec-
essary, in exceptional cases, to transport a child in the front passenger
seat, the front passenger airbag must always be disabled ⇒ page 44, De-
activating airbags*. If the passenger seat has a height adjustment op-
tion, move it to the highest position.
● For those vehicles that do not include a key lock switch to disconnect
the airbag, the vehicle must be taken to a Technical Service.
● 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 potential-
ly fatal injuries to the child!
● Never allow a child to be transported in a vehicle without being prop-
erly secured, or to stand up or kneel on a seat while travelling. In an acci-
dent, 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 vehicle is
moving, they expose themselves to greater risk of injury in the event of a
sudden braking manoeuvre or in an accident. This is particularly impor-
tant if the child is travelling on the front passenger seat and the airbag
system is triggered 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 vehi-
cle.
● Depending on weather conditions, it may become extremely hot or
cold inside the vehicle. This can be fatal.WARNING (Continued)
● Children who are less than 1.5 metres tall must not wear a normal
seat belt without a child seat, as this could cause injuries to the abdomi-
nal and neck areas during a sudden braking manoeuvre or in an accident.
● Do not allow the seat belt to become twisted or jammed, or to rub on
any sharp edges.
● Incorrectly worn seat belts can cause injuries even in a minor colli-
sion or in sudden braking manoeuvres.
● The seat belt provides maximum protection only when the seat belt is
properly positioned ⇒ page 25, Seat belts.
● Only one child may occupy a child seat ⇒ page 48, Child seats.

Safety FirstOperating InstructionsPractical TipsTechnical Specifications

52Child safety
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. If the child seat is
equipped with Toptether* anchor points, secure it to the corre-
spondent ring. Observe the manufacturer's instructions.
– 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 the ISOFIX rings is between the rear seat backrest
and the seat cushioning. The Top Tether* anchors are located at the rear of
the backs seats (behind the seat or in the luggage compartment).
Child seats with the ISOFIX and Top Tether* attachment system are available
from the Authorised Service Centres.
WARNING
● The securing rings are designed only for use with ISOFIX and Top
Tether* child seats.
● Never secure child seats that do not have the ISOFIX and Top Tether*
system, retaining belts or other objects to the securing rings – this could
result in potentially fatal injuries to the child!
● Ensure that the child seat is secured correctly using the “ISOFIX” and
Top Tether* securing rings.
