sensor Seat Leon 5D 2010 Owner's manual

Seat belts
28
– Press the upper part of the shoulder belt guide and hold it in this
position ⇒page 27, fig. 16 .
– Move the shoulder belt guide up or down until you have adjusted the seat belt ⇒page 25.
– 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 or even mortal
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 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 the driver, you are respon-
sible for all vehicle occupants, especially children. Therefore:
– Never allow anyone to wear the seat belt incorrectly while the vehicle is moving ⇒.
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 for the whole journey.
•Read and always observe information and warnings concerning the use
of seat belts ⇒page 23.
Seat belt tensionersFunction 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
retracts 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 familiar
with these regulations, which are also available to you.WARNING (continued)
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Airbag system
38The 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 effectively when the occupants are wearing their
seat belts. Therefore, it is most important to wear the seat belts at all times,
not only because this is required by law in most countries, but also for your
safety ⇒page 19, “Brief introduction”.
The side airbag system will not be triggered if:•the ignition is switched off•there is a minor side collision•there is a frontal collision•there is a rear-end collision•the vehicle turns over
The main parts of the airbag system are:•an electronic control and monitoring system (control unit)•the side airbags in the sides of the backrests of the front and rear seats•a warning lamp
T on the instrument panel ⇒page 31
The airbag system operation is monitored electronically. The airbag warning
lamp will light up for approx. 4seconds ever y time the ignition is switched on
(self-diagnosis).
WARNING
•In a side-on collision the side airbags will not work if the sensors do not
correctly measure the pressure increase on the interior of the doors, due to
air escaping through the areas with holes or openings in the door panel.•Never drive the vehicle if the interior panels have been removed.•Never drive if the interior door panels have been removed or if the
panels have not been correctly fitted.
•Never drive the vehicle if the loudspeakers in the door panels have
been removed, unless the holes left by the loudspeakers have been
correctly closed.•Always check that the openings are closed or covered if loudspeakers
or other equipment are fitted in the interior door panels.•Any work carried out to the doors should be made in a specialised work-
shop.•The seat belts and airbags can only provide maximum protection if the
occupants are seated correctly ⇒page 10, “Proper sitting position for
occupants”.•If a fault has occurred in the airbag system, have the system checked
immediately by a specialised workshop. Otherwise, during a side collision,
the system may fail to trigger, or not trigger correctly.WARNING (continued)
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Airbag system
40Safety notes on the operation of the side airbag system
If airbags are used correctly, they can considerably reduce the
risk of injury in side impact collisions.
WARNING
•If you do not wear a seat belt, if you lean forward, or are not seated
correctly while the vehicle is in motion, you are at a greater risk of injury if
the side airbag system is triggered in an accident.•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.•Occupants of the outer seats must never carry any objects or pets in the
deployment space between them and the airbags, or allow children or
other passengers to travel in this position. It is also important not to attach
any accessories (such as cup holders) to the doors. This would impair the
protection offered by the side airbags.•The built-in coat hooks should be us ed only for lightweight clothing. Do
not leave any heavy or sharp-edged objects in the pockets.•Great forces, such as hard blows or kicks, must not be exer ted upon the
backrest bolster because the system may be damaged. In this case, the
side airbags would not be triggered.•Under no circumstances should protective covers be fitted over seats
with side airbags unless the covers have been approved for use in your
vehicle. Because the airbag is triggered from the side of the backrest, the
use of non-approved seat covers would obstruct the side airbag, seriously
reducing the airbag’s effectiveness ⇒page 212, “Accessories, parts
replacement and modifications”.•Any damage to the original seat upholstery or around the seams of the
side airbag units must be repaired immediately by a specialised workshop.•The airbags provide protection for just one accident; replace them once
they have deployed.
•When children assume an incorrect sitting position, they expose them-
selves to an increased risk of injury in the event of an accident. This is
particularly the case if the child is travelling on the front passenger seat
and the airbag system is triggered in an accident; this could have critical
consequences including serious injury or death ⇒page 46, “Child safety”.•Any work on the side airbag system or removal and installation of the
airbag components for other repairs (such as removal of the front seat)
should only be performed by a specialised workshop. Otherwise, faults
may occur during the airbag system operation.•Do not attempt to modify components of the airbag system in any way.•The side and head airbags are managed through sensors located in the
interior of the front doors. To ensure the correct functioning of the side and
head airbags neither the doors nor the door panels should be modified in
any way (e.g. fitting loudspeakers). If the front door is damaged, the airbag
system may not work correctly. All work carried out on the front door must
be made in a specialised workshop.WARNING (continued)
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Airbag system43
Safety First
Operating Instructions
Practical Tips
Technical Specifications
•There must be no other persons, animals or objects between the occu-
pants of the outer seats and the deployment space of the curtain airbags
so that the curtain airbag can deploy without restriction and provide the
greatest possible protection. Therefore, sun blinds which have not been
expressly approved for use in your vehicle may not be attached to the side
windows ⇒page 212, “Accessories, parts replacement and modifica-
tions”.•The built-in coat hooks should be used only for lightweight clothing. Do
not leave any heavy or sharp-edged objects in the pockets. Please, do not
hang the clothes on coat hangers.•The airbags provide protection for just one accident; replace them once
they have deployed.•Any work on the curtain airbag system or removal and installation of
the airbag components for other repairs (such as removal of the roof lining)
should only be performed by a spec ialised workshop. Otherwise, faults
may occur during the airbag system operation.•Do not attempt to modify components of the airbag system in any way.•The side and head airbags are managed through sensors located in the
interior of the front doors. To ensure the correct functioning of the side and
head airbags neither the doors nor the door panels should be modified in
any way (e.g. fitting loudspeakers). If the front door is damaged, the airbag
system may not work correctly. All work carried out on the front door must
be made in a specialised workshop.WARNING (continued)
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Cockpit
78Item
Symbol
Meaning of indicator
and warning lamps
Further
information
z
Fuel level / reserve
⇒ page 82
v
Coolant level / coolant temperature
⇒page 82


Rear fog light switched on
⇒page 83

Turn signals in operation
⇒page 83
%0#
Engine fault (petrol engine)
⇒page 83
D
Glow plug system for diesel engine
⇒page 83

Main beam switched on
⇒page 84

Soot accumulation in the diesel engine
particulate filter
⇒page 84
J
ABS system fault
⇒page 84
Y
Windscreen washer fluid level
⇒page 85
F
Alternator fault
⇒page 85
h
Fasten seat belts!
⇒page 19
I
Brake pad worn
⇒page 85
~
Tyre pressure
⇒page 85
A1A2A3A4A5A6A7A8A9A10A11A12A13
T
Airbag or belt tensioner system fault or
airbag disabled
⇒ page 28
⇒ page 31

Bulb defective
⇒page 87
H
Handbrake applied,
low brake fluid level or
fault in brake system
⇒page 86
E
Red:
Engine oil pressure
⇒ page 87
Yellow:
If flashing: engine oil sensor faulty
If it remains lit: insufficient engine oil

Cruise control system switched on
⇒page 87
o
Door open indicator
⇒page 88
l
If it stays lit: TCS disabled
⇒page 88
⇒ page 89
⇒ page 161

Electromechanical steering
⇒page 88

Fault in the emission control system
⇒page 88
 If flashing: Electronic Stability Pro-
gramme (ESP) or the TCS is working
If it remains lit: ESP or TCS faulty
⇒page 88
⇒ page 89
⇒ page 161
K
Selector lever lock (automatic gearbox)
⇒page 89
Item
Symbol
Meaning of indicator
and warning lamps
Further
information
A14A15A16A17A18A19A20A21A22A23A24
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Cockpit85
Safety First
Operating Instructions
Practical Tips
Technical Specifications
wheels to lock quickly when you brake. This could cause the rear to break
away. Risk of skidding. Stop the vehicle and seek technical assistance.
Washer fluid
Y
This warning lamp lights up to indicate that the windscreen
washer level is too low.This serves as a reminder to fill up the reservoir at the earliest opportunity
⇒
page 230
The following message is shown on the instrument panel display*
14): REFILL
WINDSCREEN WASHER FLUID .
Alternator
F
This warning lamp signals a fault in the alternator.
The warning lamp
F lights up when the ignition is switched on. It should go
out when the engine has started running.
If the warning lamp F lights up while driving, the alternator is no longer
charging the battery. You should immediately drive to the nearest specialised
workshop.
You should avoid using electrical equipment that is not absolutely necessary
because this will drain the battery.
Worn brake pads
I
If the
I symbol lights up, have the front brake pads (and, for safety reasons,
the rear pads as well) inspected by a specialised workshop.
Tyre pressure
~
The tyre pressure control system controls the tyre speed and
the frequency spectrum of each tyre.The tyre warning lamp
15) compares wheel revolutions and with this informa-
tion, the diameter of each wheel using the ESP sensors. If the diameter of a
wheel changes, the tyre warning lamp ~ lights up. The wheel diameter
changes when:
•Tyre pressure is insufficient.
14)Depending on the model version.WARNING (continued)
15)Depending on the model version
Fig. 50 Centre console:
tyre monitor system
button
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Cockpit87
Safety First
Operating Instructions
Practical Tips
Technical Specifications
This warning lamp can light up together with the ABS system warning lamp.
WARNING
•Before opening the bonnet, read and observe the warnings on
⇒ page 221.•If the brake warning lamp does not go out, or if it lights up when
driving, the brake fluid level ⇒page 233, “Brake fluid” in the reservoir is
too low. Risk of accident. Stop the vehicle and do not drive on. Obtain tech-
nical assistance.•If the brake warning lamp
H lights up together with the ABS warning
lamp
J, the control function of the ABS could be out of action. This could
cause the rear wheels to lock quickly when you brake. This could cause the
rear to break away. Risk of skidding. Stop the vehicle and seek technical
assistance.
Bulb defect

The warning lamp lights up when a bulb in the vehicle’s exte-
rior lighting is defective.The warning lamp
 lights up when a bulb in the vehicle’s exterior lighting
(e.g. left-hand main beam) is defective.
The instrument panel displays the following message
17): LEFT FULL BEAM
FAULTY .
Engine oil pressure
E
If this warning lamp is red it indicates that the engine oil pres-
sure is too low.If this warning symbol starts to flash, and is accompanied by three audible
warnings , switch off the engine and check the oil level. If necessary, add more
oil ⇒page 224.
The instrument panel displays the following message
18): STOP ENGINE OIL
PRESSURE INSTRUCTION MANUAL .
If the symbol flashes although the oil level is correct, do not drive on. The
engine must not even run at idle speed. Obtain technical assistance.
Checking the oil level
E
If the warning lamp is yellow
E the engine oil level should be checked as
soon as possible. Top up the oil ⇒page 226 at the next opportunity.
Oil level sensor faulty*
E
If the
E yellow warning lamp flashes, take the vehicle to a specialised work-
shop to have the oil level sensor checked. Until then it is advisable to check
the oil level every time you refuel.
Cruise control system*

The warning lamp comes on when the cruise control system
is switched on.The warning lamp
 lights up when the cruise control system is switched on.
For further information on the cruise control system, see ⇒page 181.
17)Depending on the model version.
18)Depending on the model version.
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Unlocking and locking
108Up to eight remote control keys can be used.Anti-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 vehicle 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 vehicle 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 interior•Undue manipulation of the alarm•Battery handling
The acoustic signals sound and the turn signals 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
vehicle. 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, another monitored area is accessed (e.g. the
tailgate is opened after a door has been opened), the alarm 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.
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Unlocking and locking109
Safety First
Operating Instructions
Practical Tips
Technical Specifications
Activation
– It is automatically turned on with the anti-theft alarm, when the
vehicle is locked mechanically with the key and when the button
on the remote control is used.
Deactivation
– Press the button on the remote control twice. Only the volu- metric sensor is deactivated. The alarm system remains acti-
vated.
WARNING
•The Safe security system remains deactivated if the volumetric sensor
is deactivated.•For those vehicles in which a separation screen is fitted, the alarm will
not function correctly due to interference with the sensor.Note
•If the alarm has been triggered by the volumetric sensor, this will be indi-
cated by a flashing of the indicator on the driver door. This flashing will be
different to that for an activated alarm.

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Lights and visibility
118•The rear fog light is so bright that it can dazzle drivers behind you. You
should use the rear fog light only when visibility is very poor.•If you are towing a trailer equipped with a rear fog light on a vehicle with
a factory-fitted towing bracket , the rear fog light on the vehicle will automati-
cally be switched off.•The use of the lighting described here is subject to the relevant statutory
requirements.•Depending on weather conditions (very cold or wet), the front and tail
lights and the turn signals may be temporarily misted. This has no influence
o n t h e u s e f ul l i f e o f t h e l i g h t i n g s ys te m . T h e l i g h t s wi ll s o o n d e m is t w h e n t h e y
are switched on.Automatic lighting*Activation
– Rotate the switch to the position “Auto”, this indication will light up. Deactivation
– Turn the light switch to 0.
Automatic lighting
If automatic headlight control is switched on, dipped beam headlights are
automatically switched on by a photosensor if you drive into a tunnel, for
example.
The rain sensor switches on the dipped beam headlights when the wind-
screen wipers have been operating continuously for a few seconds and it
switches the lights off when the continuous or intermittent wipe is switched
off for some minutes ⇒
page 129.
When the automatic dipped light control is connected but the dipped lights
are off, the warning lamp
!54/
lights up on the light control ⇒fig. 72 . If the
automatic control switches on the dipped lights, the instrument and control
lighting is also switched on.
WARNING
•Even if the automatic headlight control is switched on, the dipped
headlights will not be switched on with fog. Therefore, the dipped beam
must be switched on manually.Note
•For those vehicles with the automatic headlight system, when the key is
removed from the ignition, the acoustic signal will only sound if the light
control is in the position
 or  if the vehicle is not fitted with the coming
home function.
•If the daylight driving automatic light function is switched on, the fog
lights or rear fog light cannot be switched on in addition.•The use of the lighting described here is subject to the relevant statutory
requirements.
Fig. 72 Automatic
lighting
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