Seat Leon SC 2014 Service Manual

Safe driving
the chest and the centre of the steering
wheel
››› Fig. 55. If you are sitting closer than
25 c m, the airb
ag system cannot protect you
properly.
● If your physical constitution prevents you
from maintaining the minimum distance of 25
cm, contact a specialised workshop. The
workshop will help you decide if special spe-
cific 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 sus-
tain injuries to the arms, hands and head.
● To reduce the risk of injury to the driver
during sudden braking manoeuvres or an ac-
cident, 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 correct-
ly.
● Adjust the head restraint properly to ach-
ieve optimal protection. Adjusting the steering wheel position
Read the additional information carefully
›››  page 14. WARNING
● Never adjust the position of the steering
wheel when the vehicle is moving, as this
could cause an accident.
● Move the lever up firmly so the steering
wheel position does not accidentally change
during driving. risk of accident!
● Make sure you are capable of reaching and
firmly holding the upper part of the steering
wheel: risk of accident!
● If you adjust the steering wheel so that it
points towards your face, the driver airbag
will not protect you properly in the event of
an accident. Make sure that the steering
wheel points towards your chest. Correct sitting position for front
passenger
For your own safety and to reduce the risk of
injury in the event of an accident, we recom-
mend the following adjustments for the front
passenger:
– Move the front passenger seat back as far
as possible ››› .–
Move the seat backrest to an upright posi-
tion so that your back rests 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 41.
– Always keep both feet in the footwell in
front of the front passenger seat.
– Fasten your seat belt securely ››› page 43.
It is possible to deactivate the front passen-
ger airbag in exceptional circumstances
› ›

› page 54.
Adjus
ting the front passenger seat
››› page 106. 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 between 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 minimum distance of 25
cm, contact a specialised workshop. The
workshop will help you decide if special spe-
cific modifications are necessary.
● Always keep your feet in the footwell when
the vehicle is moving; never rest them on the » 39
Technical specifications
Advice
Operation
Safety
The essentials

Safety
dash panel, out the window or on the seat. An
incorrect sitting position exposes you to an
increased risk of injury in case of a sudden
braking or an accident. If the airbag is trig-
gered, you could sustain severe injuries due
to an incorrect sitting position.
●
To reduce the risk of injury to the front pas-
senger in events such as sudden braking ma-
noeuvres or an accident, never travel with the
backrest tilted far back! The airbag system
and seat belts can only provide optimal pro-
tection when the backrest is in an upright po-
sition and the front passenger is wearing his
or her seat belt properly. The further the seat
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 po-
sition!
● Adjust the head restraint correctly in order
to achieve maximum protection. Correct sitting position for passengers
in the rear seats
To reduce the risk of injury in the event of a
sudden braking manoeuvre or an accident,
passengers on the rear seat bench must con-
sider the following:
–
Sit up straight.
– Adjust the head restraint to the correct po-
sition ››› page 41 . –
Alw ays keep both feet in the footwell in
front of the rear seat.
– Fasten your seat belt securely ››› page 43.
– Use an appropriate child restraint system
when you take children in the vehicle
››› page 56. WARNING
● If the passengers in the rear seats are not
sitting properly, they could sustain severe in-
juries.
● Adjust the head restraint correctly in order
to achieve maximum protection.
● Seat belts can only provide optimal protec-
tion when seat backrests are in an upright
position and the vehicle occupants are wear-
ing their seat belts correctly. If passengers In
the rear seats are not sitting in an upright po-
sition, the risk of injury due to incorrect posi-
tioning of the seat belt increases. Examples of incorrect sitting
positions
Seat belts can provide optimal protection on-
ly when the belt webs are properly posi-
tioned. Incorrect sitting positions substan-
tially reduce the protective function of seat
belts and increase the risk of injury due to in-
correct seat belt position. As the driver, you
are responsible for all passengers, especially
children.–
Never allow anyone to assume an incorrect
sitting position in the vehicle while travel-
ling ››› .
The following list contains examples of sit-
ting positions that could be dangerous for all
vehicle occupants. The list is not complete,
but we would like to make you aware of this
issue.
Therefore, whenever the vehicle is in motion:
● Never stand in the vehicle.
● Never stand on the seats.
● Never kneel on the seats.
● Never tilt your seat backrest far to the rear.
● Never lean against the dash panel.
● Never lie on the rear bench.
● Never sit on the front edge of a seat.
● Never sit sideways.
● Never lean out of a window.
● Never put your feet out of a window.
● Never put your feet on the dash panel.
● Never put your feet on the surface of a seat.
● Do not allow anyone to travel in the foot-
well.
● Never travel without wearing the seat belt.
● Do not allow anyone to travel in the lug-
gage compartment.
40

Safe driving
WARNING
● Any incorrect sitting position increases the
risk of severe injuries. Sitting in an incorrect
position exposes the vehicle occupants to se-
vere injuries if airbags are triggered, by strik-
ing a vehicle occupant who has assumed an
incorrect sitting position.
● Before the vehicle moves, assume the prop-
er sitting position and maintain it throughout
the trip. Before every trip, instruct your pas-
sengers to sit properly and to stay in this po-
sition during the trip ››› page 38, Sitting posi-
tion for vehicle occupants .Correct adjustment of front head
restraints
Fig. 57
Correctly adjusted head restraint as
viewed from the front and the side. Properly adjusted head restraints are an im-
portant part of passenger protection and can reduce the risk of injuries in most accident
situations.
– Adjust the head restraint so that its upper
edge is, as far as possible, at the same lev-
el as the top of your head, or at the very
least, at eye level ››› Fig. 57 .
Adju s
ting the head restraints ›››
 page 12 WARNING
● Travelling with the head restraints removed
or improperly adjusted increases the risk of
severe injuries. An improper adjustment of
the head restraints may cause death in an ac-
cident and increase the risk of suffering inju-
ries during abrupt braking actions or unex-
pected manoeuvres.
● The head restraints must always be adjus-
ted according to the height of the passenger. Correct adjustment of rear head
restraints
Fig. 58
Head restraints in the correct posi-
tion. Fig. 59
Head restraint position warning label. Properly adjusted head restraints are an im-
portant part of the passenger protection and
can reduce the risk of injuries in most acci-
dent situations
»
41Technical specifications
Advice
Operation
Safety
The essentials

Safety
Rear head restraints – The rear head restraints have 2 positions:
use and
non-use.
– One position for use (head restraint raised)
››

› Fig. 58. In this position, the head re-
str
aints are used normally, protecting pas-
sengers along with the rear seat belts.
– And one position for non-use (head re-
s

traint lowered).
– To fit the head restraints in position for use,
pull on the edges with both hands in the
direction of the arrow. WARNING
● Under no circumstances should the rear
passengers travel while the head restraints
are in the non-use position. See the warning
label located on the rear side fixed window
››› Fig. 59.
● Do not sw

ap the centre rear head restraint
with either of the outer seat rear head re-
straints. Risk of injury in case of an accident! CAUTION
Note the instructions on the adjustment of
the head restraints ››› page 107. Pedal area
Pedals –
Ensure that you can always press the accel-
erator, brake and clutch pedals unimpaired
to the floor.
– Ensure that the pedals can return unim-
paired to their initial positions.
– Ensure that the floor mats are securely fas-
tened during the trip and do not obstruct
the pedals ››› .
Only use floor mats which leave the pedal
area free and can be secured to prevent them
from slipping. You can obtain suitable floor
mats from a specialised dealership. Fasten-
ers* for floor mats are fitted in the footwells.
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 crit-
ical situations while driving. ●
Never lay or fit floor mats or other floor cov-
erings over the original floor mats. This
would reduce the pedal area and could ob-
struct the pedals. Risk of accident.
● Never place objects in the driver footwell.
An object could move into the pedal area and
impair pedal operation. In the event of a sud-
den driving or braking manoeuvre, you will
not be able to operate the brake, clutch or ac-
celerator pedal. Risk of accident! 42

Seat belts
Seat belts
The reasons why we should
wear seat belts Number of seats Your vehicle has
five seats, two in the front
and thr ee in the r
ear. 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
r e

ar seats. WARNING
● Never transport more than the permitted
amount of people in your vehicle.
● Every vehicle occupant must properly fas-
ten 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*
 Fig. 60
Instrument panel: right rear seat oc-
cupied and corresponding seat belt fastened
display. The control lamp illuminates to remind the
driver to fasten his seat belt.
Before starting the vehicle:
– Fasten your seat belt securely.
– Instruct your passengers to fasten their
seat belts properly before driving off.
– Protect children by using a child seat ac-
cording to the child's height and weight.
When the ignition is switched on, the control
lamp  in the instrument panel lights up (de-
pending on the model version) if the driver or
passenger have not fastened their seat belts.
An audible warning signal will sound for a
few seconds if the seat belts are not fastened
as the vehicle drives off and reaches a speed of more than approximately 25 km/h
(15 mph) or if the seat belts are unfastened
while the vehicle is in motion. The warning
light will also flash
.
The 
l
amp goes out when the driver and
p

assenger seat belts are fastened with the ig-
nition switched on.
Rear seat belts fastened display.*
Depending on the model version, when the
ignition is switched on, the seat belt status
display ››› Fig. 60 on the instrument panel in-
forms

the driver whether the passengers in
the rear seats have fastened their seat belts.
The  symbol indicates that the passenger in
this seat has fastened “his or her” seat belt.
When a seat belt in the rear seats is fastened
or unfastened, the seat belt status is dis-
played for approximately 30 seconds. The in-
dication can be hidden by pressing the 0.0/SET button on the dash panel.
The seat belt status flashes for a maximum of
30 seconds when a seat belt in the rear seats
is unfastened while the vehicle is in motion.
An audible warning will also be heard if the
vehicle is travelling at over 25 km/h
(15 mph).
43
Technical specifications
Advice
Operation
Safety
The essentials

Safety
Seat belt protection Fig. 61
Drivers with properly worn seat belts
will not be thrown forward in the event of sud-
den braking Properly worn seat belts hold the occupants
in the proper position. They also help prevent
uncontrolled movements that may result in
serious injury and reduce the risk of being
thrown out of the vehicle in case of an acci-
dent.
Vehicle occupants wearing their seat belts
correctly benefit greatly from the ability of the
belts to absorb kinetic energy. In addition,
the front part of your vehicle and other pas-
sive safety features (such as the airbag sys-
tem) are designed to absorb the kinetic ener-
gy released in a collision. Taken together, all
these features reduce the releasing kinetic
energy and consequently, the risk of injury.
This is why it is so important to fasten seat
belts before every trip, even when "just driv-
ing around the corner". Ensure that your passengers wear their seat
belts as well. Accident statistics have shown
that wearing seat belts is an effective means
of substantially reducing the risk of injury
and improving the chances of survival when
involved 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 air-
bags, the seat belts must be fastened and
worn. The front airbags, for example, are only
triggered in some cases of head-on collision.
The front airbags will not be triggered during
minor frontal or side collisions, rear-end colli-
sions, rollovers or accidents in which the air-
bag trigger threshold value in the control unit
is not exceeded.
Therefore, you should always wear your seat
belt and ensure that all vehicle occupants
have fastened their seat belts properly before
you drive off!
Safety instructions on using seat
belts –
Always wear the seat belt as described in
this section.
– Ensure that the seat belts can be fastened
at all times and are not damaged. WARNING
● If seat belts are worn incorrectly or not at
all, the risk of severe injuries increases. The
optimal protection from seat belts can be
achieved only if you use them properly.
● Fasten your seat belt before every trip -
even when driving in town. Other vehicle oc-
cupants must also wear the seat belts at all
times, otherwise they run the risk of being in-
jured.
● The seat belt cannot offer its full protection
if the seat belt is not positioned correctly.
● Never allow two passengers (even children)
to share the same seat belt.
● Always keep both feet in the footwell in
front of your seat as long as the vehicle is in
motion.
● Never unbuckle a seat belt while the vehi-
cle is in motion. Risk of fatal injury.
● The seat belt must never be twisted while it
is being worn.
● The seat belt 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 position.
● Loose, bulky clothing (such as an overcoat
over a jacket) impairs the proper fit and func-
tion of the seat belts, reducing their capacity
to protect. 44

Seat belts
●
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 se-
curely.
● Never use seat belt clips, fastening rings or
similar items 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 accident. Therefore, you must
check the condition of all seat belts at regular
intervals.
● Seat belts which have been worn in an acci-
dent and stretched must be replaced by a
specialised workshop. Renewal may be nec-
essary even if there is no apparent damage.
The belt anchorage should also be checked.
● Do not attempt to repair a damaged seat
belt yourself. The seat belts must not be re-
moved or modified in any way.
● The belts must be kept clean, otherwise the
retractors may not work properly. Head-on collisions and the laws of
physics
Fig. 62
A driver not wearing a seat belt is
thrown forward violently Fig. 63
The unbelted passenger in the rear
seat is thrown forward violently, hitting the
driver who is wearing a seat belt. It is easy to explain how the laws of physics
work in the case of a head-on collision: when
a vehicle starts moving, a type of energycalled “kinetic energy” is created both in the
passengers and inside the vehicle.
The amount of “kinetic energy” depends on
the speed of the vehicle and the weight of
the vehicle and its passengers. The higher
they are, the more energy there is to be “ab-
sorbed” in the event of an accident.
The most significant factor, however, is the
speed of the vehicle. If the speed doubles
from 25 km/h (15 mph) to 50 km/h
(30 mph), for example, the corresponding ki-
netic energy is multiplied by four.
Given that the passengers of the vehicle in
our example do not have their seat belts fas-
tened, in the event of a collision the entire
amount of the passengers' kinetic energy will
be only absorbed by the mentioned impact.
Even at speeds of 30 km/h (19 mph) to
50 km/h (30 mph), the forces acting on bod-
ies in a collision can easily exceed one tonne
(1000 kg). At greater speed these forces are
even higher.
Vehicle occupants not wearing seat belts are
not “attached” to the vehicle. In a head-on
collision, they will move forward at the same
speed their vehicle was travelling just before
the impact. This example applies not only to
head-on collisions, but to all accidents and
collisions.
Even at low speeds the forces acting on the
body in a collision are so great that it is not
»
45Technical specifications
Advice
Operation
Safety
The essentials

Safety
possible to brace oneself with one's hands.
In a frontal collision, unbelted passengers
are thrown forward and will make violent con-
tact with the steering wheel, dash panel,
windscreen or whatever else is in the way
››› Fig. 62 .
It i
s also important for rear passengers to
wear seat belts properly, as they could other-
wise be thrown forward violently through the
vehicle interior in an accident. Passengers in
the rear seats who do not use seat belts en-
danger not only themselves but also the front
occupants ››› Fig. 63. How t
o properly adjust your
seatbelt
Fastening and unfastening the seat
belt Fig. 64
Positioning and removing the seat
belt buckle. Fig. 65
Position of seat belt during pregnan-
cy. Read the additional information carefully
›››  page 13
.
F a

sten your seat belt
The seat belt cannot offer its full protection if
the seat belt is not positioned correctly.
● 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
››› Fig. 64 A.
● Pu

ll the belt to ensure that the latch plate is
securely engaged in the buckle.
46

Seat belts
The seat belts are equipped with an automat-
ic retractor on the shoulder strap. Full free-
dom of movement is permitted when the
shoulder belt is pulled slowly. However, dur-
ing sudden braking, during travel in steep
areas 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 seat belt tensioners
››› page 47 .
R el
easing the seat belt
● Press the red button on the belt buckle
››› Fig. 64 B
. 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.
Adjusting the seat belt
Seat belts offer their maximum protection on-
ly when they are properly positioned
››› Fig. 65 . WARNING
● The seat belts offer best protection only
when the backrests are in an upright position
and the seat belts have been fastened prop-
erly.
● 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.
●
Never unbuckle a seat belt while the vehi-
cle is in motion. If you do, you increase the
risk of sustaining severe or fatal injuries.
● An incorrectly worn seat belt can cause se-
vere 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 ››› Fig. 65.
● Alw

ays engage the retractor lock when you
are securing a child seat in group 0, 0+ or 1
››› page 56.
● Re

ad and observe the warnings ››› page 44. Seat belt tensioners
How the seat belt tensioner works During a frontal collision, the seat belts on
the front seats are retracted automatically.
The seat belts for the occupants in the front
seats are equipped with belt tensioners. Sen-
sors will trigger the belt tensioners only dur-
ing severe head-on, lateral and rear-end colli-
sions and only if the seat belt is worn. This
retracts and tightens the seat belts, reducing
the forward motion of the occupants.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 col-
lision, 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 work-
shops are familiar 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 tension-
ers 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 accident, the belt
tensioners function incorrectly or may not
function at all.
So that the effectiveness of the seat belt ten-
sioner is not reduced and that removed parts
»
47
Technical specifications
Advice
Operation
Safety
The essentials

Safety
do not cause any injuries or environmental
pollution, regulations, which are known to
the specialised workshops, must be ob-
served. WARNING
● Improper use or repairs not carried out by
qualified mechanics increase the risk of se-
vere or fatal injuries. The belt tensioners may
fail to trigger or may trigger in the wrong cir-
cumstances.
● Never attempt to repair, adjust, remove or
install parts of the belt tensioners or seat
belts.
● The seat belt tensioner, seat belt and auto-
matic 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 pro-
tection for one accident and must be changed
if they have been activated. Airbag system
Brief introduction Why wear a seat belt and assume the
correct sitting position? For the inflating airbags to achieve the best
protection, the seat belt must always be worn
properly and the correct sitting position must
be assumed.
The airbag system is not a substitute for seat
belts, but it is an integral part of the vehicle's
overall passive safety system. Please bear in
mind that the airbag system can only work ef-
fectively when the vehicle occupants are
wearing their seat belts correctly and have
adjusted the head restraints properly. There-
fore, it is most important to properly wear the
seat belts at all times, not only because this
is required by law in most countries, but also
for your safety
›››
page 43, The reasons why
we should wear seat belts .
The airbag inflates in a matter of seconds, so
if you are not properly seated when the air-
bag is triggered, you may sustain fatal inju-
ries. Therefore, it is essential that all vehicle
occupants assume a correct sitting position
while travelling.
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 occu-
pant. This also applies to children.
Always maintain the greatest possible dis-
tance between yourself and the front airbag.
This way, the front airbags can completely
deploy when triggered, providing their maxi-
mum protection.
The most important factors that will trigger
an airbag are: the type of accident, the angle
of collision and the speed of the vehicle.
Whether or not the airbags are triggered de-
pends primarily on the vehicle deceleration
rate resulting from the collision and detected
by the control unit. If the vehicle deceleration
occurring during the collision and measured
by the control unit remains below the speci-
fied reference values, the front, side and/or
curtain airbags will not be triggered. Take in-
to account that the visible damage in a vehi-
cle involved in an accident, no matter how
serious, is not a determining factor for the
airbags to have been triggered.
WARNING
● Wearing the seat belt incorrectly or assum-
ing an incorrect sitting position can lead to
critical or fatal injuries.
● All vehicle occupants, including children,
who are not properly belted can sustain criti-
cal or fatal injuries if the airbag is triggered.
Children up to 12 years old should always 48