Seat Leon 5D 2008 Owner's Guide

Seat belts
20The warning lamp*
 is switched off if the driver seat belt is fastened while
the ignition is switched on.
Why wear seat belts?Physical principles of frontal collisions
In the event of a frontal collision, a large amount of kinetic
energy must be absorbed.
It is easy to explain how the laws of physics work in the case of a head-on
collision: When a vehicle starts moving ⇒fig. 6 there is a certain amount of
energy known as “kinetic energy”, both in the vehicle and in the occupants.
The amount of “kinetic energy” depends on the speed of the vehicle and the
weight of the vehicle and its passengers. The higher the speed and the
greater the weight, the more energy there is to be “released” in an accident.
The most significant factor, however, is the speed of the vehicle. If the speed
doubles from 25 km/h to 50 km/h, for example, the kinetic energy is multi-
plied by four.
Because the passengers in our example ar e not restrained by seat belts, the
entire amount of kinetic energy has to be absorbed at the point of impact
⇒ fig. 7 .
Even at speeds of 30 km/h to 50 km/h, the forces acting on bodies in a colli-
sion can easily exceed one tonne (1000 kg). At greater speed these forces are
even higher.
Passengers not wearing seat belts are not “attached” to the vehicle. In a
frontal collision, they will move forward at the same speed their vehicle was
Fig. 6 Vehicle about to hit
a wall: the occupants are
not wearing seat belts
Fig. 7 The vehicle hits
the wall: the occupants
are not wearing seat belts
leon_ingles Seite 20 Montag, 26. Januar 2009 4:29 16

Seat belts21
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
travelling just before the impact. This example applies not only to frontal acci-
dents, but to all accidents and collisions.
The danger of not using the seat belt
The general belief that the passengers can protect them-
selves with their hands in a minor collision is false.
Even at low speeds the forces acting on the body in a collision are so great
that it is not possible to brace oneself with one's hands. In a frontal collision,
unbelted passengers are thrown forward and will make violent contact with
the steering wheel, dashboard, windscreen or whatever else is in the way
⇒
fig. 8 .
The airbag system is not a substitute for the seat belts. When triggered,
airbags provide only additional protection. All passengers (including the
driver) must wear seat belts properly duri ng the trip. This will reduce the risk
of severe injuries in the event of an accident – regardless of whether an
airbag is fitted for the seat or not.
Note that airbags can be triggered only once. To achieve the best possible
protection, the seat belt must always be worn properly so that you will be
protected in accidents in which no airbag is deployed.
It is also important for the rear passengers to wear seat belts properly, as they
could otherwise be thrown forward viole ntly in an accident. Rear passengers
who do not use seat belts endanger no t only themselves but also the front
occupants ⇒fig. 9.
Fig. 8 A driver not
wearing a seat belt is
thrown forward violently.
Fig. 9 The unbelted rear
passenger is thrown
forward violently, hitting
the driver wearing a seat
belt.
leon_ingles Seite 21 Montag, 26. Januar 2009 4:29 16

Seat belts
22Seat belts protection
Passengers not wearing seat belts risk severe injuries in the
event of an accident.Properly worn seat belts hold the vehicle occupants in the correct sitting posi-
tions and substantially reduce the kinetic energy in the event of an accident.
Seat belts also help to prevent uncontrolled movements that could lead to
severe injuries. In addition, properly worn seat belts reduce the danger of
being thrown from the car.
Passengers wearing their seat belts correctly benefit greatly from the ability
of the belts to absorb kinetic energy. Th e front part of your vehicle and other
passive safety features (such as the airbag system) are also designed to
absorb the kinetic energy released in a collision. Taken together, all these
features reduce the releasing kinetic energy and consequently, the risk of
injury.
Our examples describe frontal collisions. Of course, properly worn seat belts
substantially reduce the risk of injury in all other types of accidents. This is why it is so important to fasten seat belts before every trip, even when "just
driving around the corner".
Ensure that your passengers wear their seat belts as well. Accident statistics
have shown properly that wearing seat belts is an effective mean of substan-
tially reducing the risk of injury and improving the chances of survival in a
serious accident. Furthermore, properly worn seat belts improve the protec-
tion provided by airbags in the event of
an accident. For this reason, wearing
a seat belt is required by law in most countries.
Although your vehicle is equipped with airbags, the seat belts must be
fastened and worn. The front airbags, for example, are only triggered in some
frontal accidents. The front airbags will not be triggered during minor frontal
collisions, minor side collisions, rear collisions, rolls or accidents in which the
airbag trigger threshold value in the control unit is not exceeded.
Therefore, you should always wear your seat belt and ensure that your
passengers have fastened their seat belts properly before you drive off!
Safety instructions on using seat belts
If seat belts are used correctly, they can reduce the risk of
injury in an accident.– Always wear the seat belt as described in this booklet.
– Ensure that the seat belts can be fastened at all times and are not damaged.
WARNING
•
If the seat belts are worn incorrectly or not at all, the risk of severe inju-
ries increases. The optimal protection from seat belts can be achieved only
if you use them properly.
Fig. 10 Driver wearing
the seat belt properly: is
secured by the belt in
sharp braking
leon_ingles Seite 22 Montag, 26. Januar 2009 4:29 16

Seat belts23
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
•
Fasten your seat belt before every trip - even when driving in town. The
other passengers must also wear the seat belt, otherwise they may be
danger of injury!
•
The seat belt cannot offer its full protection if the belt web is not posi-
tioned correctly.
•
Never allow two passengers (even children) to share the same seat belt.
•
Keep both feet in the foot-well in front of your seat as long as the
vehicle is in motion.
•
Never unbuckle a seat belt while the vehicle is in motion. Risk of fatal
injury.
•
The belt webbing must never be twisted while it is being worn.
•
The belt webbing should never lie on hard or fragile objects (such as
glasses or pens, etc.) because this can cause injuries.
•
Do not allow the seat belt to be damaged or jammed, or to rub on any
sharp edges.
•
Never wear the seat belt under the arm or in any other incorrect posi-
tion.
•
Loose, bulky clothing (such as an overcoat over a jacket) impairs the
proper fit and function of the belts, reducing their capacity to protect.
•
The slot in the seat belt buckle must not be blocked with paper or other
objects, as this can prevent the latch plate from engaging securely.
•
Never use seat belt clips, retaining rings or similar instruments to alter
the position of the belt webbing.
•
Frayed or torn seat belts or damage to the connections, belt retractors
or parts of the buckle could cause severe injuries in the event of an acci-
dent. Therefore, you must check the co ndition of all seat belts at regular
intervals.
•
Seat belts which have been worn in an accident and stretched must be
replaced by a qualified workshop. Renewal may be necessary even if there
is no apparent damage. The belt anchorage should also be checked.
•
Do not attempt to repair a damaged se at belt yourself. The seat belts
must not be removed or modified in any way.
•
The belts must be kept clean, ot herwise the retractors may not work
properly ⇒page 199.
Seat beltsSeat belt adjustment
The seat belts for the front and rear occupants are locked into
position by a latch.The seat belt cannot offer its full protection if the belt web is not
positioned correctly.
WARNING (continued)
WARNING (continued)
Fig. 11 Belt buckle and
latch plate of seat belt
leon_ingles Seite 23 Montag, 26. Januar 2009 4:29 16

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 securely 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
strap. Full freedom of movement is perm itted when the shoulder belt is pulled
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 c an 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.
•
If an occupant is incorrectly belted in, the belt cannot protect him or her
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 45.
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_ingles Seite 24 Montag, 26. Januar 2009 4:29 16

Seat belts25
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
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 l ie 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 unborn 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_ingles Seite 25 Montag, 26. Januar 2009 4:29 16

Seat belts
26
WARNING
•
An incorrectly worn seat belt web c an cause severe injuries in the event
of an accident.
•
For pregnant women, the lap part of the seat belt must lie as low as
possible over the pelvis, never across the stomach, and always lie flat so
that no pressure is exerted on the abdomen.
•
Read and observe the warnings ⇒ page 22.
Seat belt release
The seat belt must not be unfastened until the vehicle has
come to a standstill.– Press the red button on the belt buckle ⇒fig. 15 . The latch plate
is released and springs out ⇒. – Guide the belt back by hand so that it rolls up easily and the trim
is not damaged.
WARNING
Never unbuckle a seat belt while the vehicle is in motion. If you do, you
increase the risk of sustaining severe or fatal injuries.Adjusting the seat belt height
Seat belt height adjusters can be used to adjust the position
of the seat belt at the shoulder.The seat belt adjuster for the front seats can be used to adjust the
proper belt position at the shoulder.
Fig. 15 Removing latch
plate from buckle
Fig. 16 Location of the
belt height adjuster
leon_ingles Seite 26 Montag, 26. Januar 2009 4:29 16

Seat belts27
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
– 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 prot ection only if the belt web is
properly worn. The seat belts must be fastened exactly in the order
described in this chapter. An in correct 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 incr eases 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 th e 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_ingles Seite 27 Montag, 26. Januar 2009 4:29 16

Seat belts
28belt may be damaged. The consequence may be that, in the event of an acci-
dent, the belt tension devices func tion incorrectly or not at all.
So that the effectiveness of the belt tension device is not reduced and that
removed parts do not cause any injuries or environmental pollution, regula-
tions, which are known to the qualified workshops, must be observed.
WARNING
•
If repairs are not carried out by a professional, or if the belt tension
devices are used incorrectly, the risk of severe or fatal injuries increases.
The belt tension devices may fail to trigger or may trigger in the wrong
circumstances.
•
Never attempt to repair, adjust, remove or install parts of the belt
tension devices or seat belts.
•
The belt tension device and seat belt including its automatic retractor
cannot be repaired.
•
Any work on the belt tension devices and seat belts, including the
removal and refitting of system parts in conjunction with other repair work,
must be performed by a qualified workshop only.
•
The belt tension devices will only provide protection for one accident
and must be changed it they have been activated.
leon_ingles Seite 28 Montag, 26. Januar 2009 4:29 16

Airbag system29
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
Airbag systemBrief introductionWhy wear a seat belt and assume the correct sitting position?
For the inflating airbags to achieve the best protection, the
sea t b el t m u st a l w ay s be w o rn p ro p e rly a n d t h e co rrec t s i tt i ng
position must be assumed.For your own safety and the safety of the passengers, please ensure
the following before driving:
– Always wear the seat belt properly ⇒page 19.
– Adjust the driver's seat and the steering wheel correctly ⇒page 10.
– Adjust the front passenger seat correctly ⇒page 11.
– Adjust the head restraint correctly ⇒page 13.
– Use the correct child restraint system to protect children in your vehicle ⇒ page 45.The airbag is deployed at high speed in fractions of a second. If you have an
incorrect seating position at the time the airbag is deployed, it could cause
you critical injuries. Therefore, it is essential that all passengers in the vehicle
assume a correct sitting position while travelling.
A sharp braking before an accident may cause a passenger not wearing a seat
belt to be thrown forward into the area of the deploying airbag. In this case, the inflating airbag may inflict critical or fatal injuries on the occupant. This
also applies to children.
Always maintain the greatest possible distance between yourself and the
front airbag. This way, the front airbag
s can completely deploy when trig-
gered, providing their maximum protection.
The most important factors that will trigger an airbag are: the type of acci-
dent, the angle of collision and the s peed of the vehicle.
Whether the airbags are triggered depends primarily on the vehicle deceler-
ation rate resulting from the collision an d detected by the control unit. If the
vehicle deceleration occurring during the collision and measured by the
control unit remains below the specifie d reference values, the front, side
and/or curtain airbag will not be triggered. Take into account that the visible
damage in a vehicle involved in an ac cident, for whatever reason, is not an
indication as to why the airbags had been triggered.
WARNING
•
Wearing the seat belt incorrectly or assuming an incorrect sitting posi-
tion can lead to critical or fatal injuries.
•
All occupants, including children, who are not properly belted can
sustain critical or fatal injuries if the airbag is triggered. You should always
transport all children up to 12 years of age on the rear seat. Never transport
children in the vehicle if they are not restrained or the restraint system is
not appropriate for their age, size or weight.
•
If you are not wearing a seat belt, if you lean forward or to the side while
travelling or assume an incorrect sitt ing position, there is a substantially
increased risk of injury. This increased risk of injury will be further
increased if you are struck by an inflating airbag.
•
To reduce the risk of injury from an inflating airbag, always wear the
seat belt properly ⇒page 19.
leon_ingles Seite 29 Montag, 26. Januar 2009 4:29 16