Renault Sandero User manual

0.1
ENG_UD3428_2
Bienvenue (L90 - F90 - R90 - Renault - Dacia)ENG_NU_817-2_NU_Dacia_0
The descriptions of the models given in this handbook are based on the technical specifications at the time of writing. This hand-
book covers all items of equipment (both standard and optional) available for these models, but whether or not these are
fitted to the vehicle depends on the version, options selected and the country where the vehicle is sold.
This handbook may also contain information about items of equipment to be introduced later in the model year.
Welcome aboard your vehicle
This Driver’s Handbook contains the information necessary:
– for you to familiarise yourself with your new vehicle, to use it to its best advantage and to benefit fully from the technical devel-
opments it incorporates.
– to ensure that it always gives the best performance by following the simple, but comprehensive advice concerning regular main-
tenance.
– to enable you to deal quickly with minor faults not requiring specialist attention.
It is well worth taking a few minutes to read this handbook to familiarise yourself with the information and guidelines it contains
about the vehicle and its new features. If certain points are still unclear, the technicians at your local approved dealership will be
only too pleased to provide you with any additional information you may require.
The following symbol will help you when reading this handbook:
Copying or translation, in part or in full, is forbidden unless prior written permission has been obtained from the copyright holder.
To indicate a hazard, danger or safety recommendation.
Enjoy driving your new vehicle.

0.2
ENG_UD5577_1
Filler NU (B90 - Dacia)ENG_NU_817-2_NU_Dacia_0

0.3
ENG_UD3430_2
Sommaire général (L90 - F90 - R90 - Renault - Dacia)ENG_NU_817-2_NU_Dacia_0
Getting to know your vehicle ...............................
Driving ...................................................................
Your comfort .........................................................
Maintenance .........................................................
Practical advice ....................................................
Technical specifications ......................................
Alphabetical index ...............................................
Sections
1
CONTENTS
2
3
4
5
6
7

tyre pressures.......................................(up to the end of the DU)
tyres......................................................(up to the end of the DU)
tyre pressure.........................................(up to the end of the DU)
0.4
ENG_UD5539_1
Pressions de gonflage des pneumatiques à froid (en bar) (B90 - Dacia)ENG_NU_817-2_NU_Dacia_0
Tyre dimensions 165/80 R 14 185/65 R 15
Wheel sizes 5,5 J 14 6 J 15
– Front 2.0 2.0
– Rear 2.0 2.2
Tyre safety and use of chains
Refer to the information on “Tyres” in Section 5 for the maintenance conditions and, depending on the version, the conditions
under which snow chains may be fitted to the vehicle.
TYRE PRESSURE WHEN COLD (in bar)
Special note concerning vehicles used fully laden (Maximum Permissible All-Up Weight) and towing a trailer:
The maximum speed must be limited to 60 mph (100 km/h) and the tyre pressure increased by 0.2 bar.
Refer to the paragraph on “Weights” in Section 6.

1.1
ENG_UD8701_2
Sommaire 1 (B90 - Dacia)ENG_NU_817-2_NU_Dacia_1
Section 1: Getting to know your vehicle
Keys/Radio frequency remote control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2
Doors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4
RAID (Anti-Intruder Device). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6
Engine immobiliser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.7
Headrests - Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.8
Seat belts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.11
Methods of restraint in addition to the front seat belts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.15
Side protection devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.19
Child safety: General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.21
Choosing a child seat mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.23
fitting a child seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.25
Deactivating/activating the front passenger air bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.30
Rear view mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.32
Steering wheel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.33
Driving position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.34
Control instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.36
Trip computer and warning system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.41
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.45
Exterior lighting and signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.46
Headlight beam adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.48
Audible and visual signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.49
Windscreen wiper/Washer/De-icing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.50
Fuel tank (filling with fuel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.52

keys ......................................................(up to the end of the DU)
remote control door locking unit ............................(current page)
1.2
ENG_UD7223_2
Clés / télécommande à radiofréquence (B90 - L90 - F90 - U90 - R90 - L90 Ph2 - Dacia)ENG_NU_817-2_NU_Dacia_1
Jaune Noir Noir texte
Clés / Télécommande à radiofréquence
KEYS/RADIO FREQUENCY REMOTE CONTROL
Radio frequency remote
control unit A
Remote control Alocks and unlocks
the doors and tailgate.
It is powered by a battery which must
be replaced every two years (refer to
the information on the “Radio frequency
remote control: battery” in Section 5).
Driver’s responsibility
Never leave your vehicle
with the keys inside when
leaving a child (or animal)
in the car, even for a short period.
The reason for this is that the child
may endanger himself or others by
starting the engine, activating equip-
ment such as the window winders
for example, or locking the doors.
Risk of serious injury.
2
3
A
1Coded key for ignition switch, doors
and fuel filler cap.
1

Jaune Noir Noir texte
1.3
ENG_UD7223_2
Clés / télécommande à radiofréquence (B90 - L90 - F90 - U90 - R90 - L90 Ph2 - Dacia)ENG_NU_817-2_NU_Dacia_1
KEYS/RADIO FREQUENCY REMOTE CONTROL (continued)
Note: if an opening element (door or
tailgate) is open or not properly closed,
the hazard warning lights will not flash.
Note: on certain vehicles, if a door
is not opened within approximately
30 seconds of the door being unlocked
by remote control, the doors will lock
again automatically.
Interference
Interference by factors in the immediate
vicinity (external installations or the use
of equipment operating on the same
frequency as the remote control) may
affect the operation of the remote con-
trol.
The remote control unit
operating range
This varies according to the surround-
ings: therefore take care that when
handling the remote control you do not
inadvertently lock or unlock the doors.
If you lose your keys or remote
control unit, or need another set,
contact your approved dealer.
– If a remote control is replaced,
it will be necessary to take the
vehicle and all sets of keys to
your approved dealer to initial-
ise the system.
– It is possible to use up to four
remote control units for one
vehicle.
Remote control unit failure
Make sure that the batteries are
always in good condition: they have
a service life of approximately two
years.
Refer to the information on “Radio
frequency remote control unit: bat-
tery” in Section 5.
Door locking/unlocking
Press button 2on remote control Afor
approximately one second to lock the
doors and button 3to unlock them.
– The hazard warning lights and side
indicator lights flash twice to indicate
that the doors have been locked.
– The hazard warning lights and side
indicator lights flash once to indicate
that the doors have been unlocked.
2
3
A

children.................................................(up to the end of the DU)
doors.....................................................(up to the end of the DU)
child safety............................................(up to the end of the DU)
1.4
ENG_UD5542_1
Ouverture des portes (B90 - Dacia)ENG_NU_817-2_NU_Dacia_1
Portes
OPENING THE DOORS
Driver’s responsibility
Never leave your vehi-
cle with the key inside and
never leave a child (or a
pet) unsupervised, even for a short
while.
They may pose a risk to themselves
or to others by starting the engine,
activating equipment such as the
electric windows or by locking the
doors.
Risk of serious injury.
Opening manually
from the outside
Depending on the vehicle, the key locks
and unlocks the driver’s door or all four
doors.
Front: use the key to unlock one of
the front door locks 2. Place your hand
behind handle 1and pull it towards
you.
Rear: lift unlocking button 3from the
inside and pull the door handle.
Opening manually
from the inside
Front: pull the handle 4
Rear: from the inside, lift unlocking
button 3and pull the door handle 4.
Lights-on reminder buzzer
If you have left the lights on after switch-
ing off the ignition, a warning buzzer will
sound when a front door is opened (to
prevent the battery from discharging,
etc.).
2
1
3
4

children.................................................(up to the end of the DU)
doors.....................................................(up to the end of the DU)
electric door locking..............................(up to the end of the DU)
central door locking ..............................(up to the end of the DU)
1.5
ENG_UD5543_1
Verrouillage des portes (B90 - Dacia)ENG_NU_817-2_NU_Dacia_1
LOCKING THE DOORS
Manual locking
Front: use the key if outside or, if inside,
press down knob 1when the door is
closed.
Rear: press down button 1in each
door.
Electric central locking
Depending on the vehicle, this is used
to simultaneously lock the four doors
and luggage compartment.
Press the bottom of switch 2to lock.
The front door mechanism cannot be
locked if the door is open.
Childproof locks
To make it impossible for the rear doors
to be opened from the inside, move
lever 3on each door and check from
the inside that the doors are securely
locked.
If you decide to keep the doors locked when you are driving, remember
that it may be more difficult for those assisting you to gain access to the
passenger compartment in the event of an emergency.
3
2
1

1.6
ENG_UD5544_1
condamnation automatique des ouvrants en roulage (B90 - Dacia)ENG_NU_817-2_NU_Dacia_1
Condamnation automatique des ouvrants en roulage
You must first decide if you want to
activate this function.
To activate
Depending on the vehicle, with the
ignition on or the engine running,
press and hold central door locking but-
ton 1for approximately 5 seconds, until
you hear a beep.
To deactivate
Depending on the vehicle, with the
ignition on or the engine running,
press and hold central door locking but-
ton 1for approximately 5 seconds, until
you hear a beep.
Operating principle
When the vehicle is started, the system
automatically locks the doors as soon as
a speed of 4 mph (7 km/h) is reached.
The door can be unlocked:
– by pressing the door unlocking but-
ton 1.
– by opening a front door (vehicle sta-
tionary).
Note: if a door is opened, it will auto-
matically lock again when the vehicle
reaches approximately 4 mph (7 km/h).
Operating faults
If you notice an operating fault (no au-
tomatic locking) first check that all of
the doors and tailgate are closed. If
they are properly closed, contact an ap-
proved Dealer.
AUTOMATIC LOCKING WHEN DRIVING
If you decide to keep the
doors locked when you
are driving, remember that
it may be more difficult for
those assisting you to gain access
to the passenger compartment in
the event of an emergency.
1

engine immobiliser................................(up to the end of the DU)
engine immobiliser................................(up to the end of the DU)
1.7
ENG_UD5545_1
Système antidémarrage (B90 - Dacia)ENG_NU_817-2_NU_Dacia_1
Système antidémarrage
ENGINE IMMOBILISER
This prevents the vehicle being
driven by anyone not in possession
of the vehicle’s coded ignition key.
Operating principle
The vehicle is automatically protected
a few seconds after the ignition is
switched off.
If the vehicle does not recognise the
coded ignition key, tell-tale light 1will
flash continuously and the engine
cannot be started.
Any unauthorised work
carried out on the engine
immobiliser (computers,
wiring, etc.) could be dan-
gerous. Work must be carried out
by qualified personnel.
Indicator light
System operating tell-tale light
When the ignition is switched on, tell-
tale 1lights up continuously for approx-
imately three seconds and then goes
out. The vehicle has recognised the
code. You can then start the engine.
Vehicle protection tell-tale light
A few seconds after the ignition has
been switched off, tell-tale light 1will
flash constantly.
The vehicle will only be protected after
the ignition has been switched off.
Operating fault warning light
After the ignition has been switched
on, if warning light 1continues to flash
or remains continuously lit, there is a
system operating fault.
In all cases, it is essential to contact an
approved dealer as only they are qual-
ified to repair the engine immobiliser.
If the coded ignition key is faulty,
use the second key (supplied with
the vehicle).
1

headrest................................................(up to the end of the DU)
1.8
ENG_UD8366_2
Appuis-tête avant (B90 - L90 Ph2 - Dacia)ENG_NU_817-2_NU_Dacia_1
Headrests - Seats
FRONT HEADRESTS
To adjust the height
Press tab 1and simultaneously slide
the headrest to the required position.
To remove the headrest
Depending on the vehicle, press tabs 1
and 2on the head restraint guides or
on button 3 and lift the headrest to re-
lease it (tilt the seatback backwards if
necessary).
To refit the headrest
Insert the rods into the sleeves, with the
notches facing forwards, and lower the
headrest to the desired height.
The headrest is a safety
component. Ensure that it is
fitted and in the correct po-
sition: the top of your head
should be in line with the top of the
headrest.
1
2
Depending on the vehicle, insert the
headrest rods 4 into the holes (tilt the
seatback backwards if necessary).
Push the headrest in until it locks in po-
sition.
3
4

headrest................................................(up to the end of the DU)
adjusting your driving position ..............(up to the end of the DU)
1.9
ENG_UD6896_1
Appuis-tête arrière (B90 - Dacia)ENG_NU_817-2_NU_Dacia_1
REAR HEADRESTS
Positions for use
Press tab Aof lock 1and raise the
headrest to its maximum height to use
it in the high position. Lower it until it
locks to use it in the bottom position.
Storage position
Press catch 2and lower the headrest
completely.
When the headrest is set at the
lowest position, this is for storage
only. It should not be in this position
when a seat is occupied.
To remove the headrest
Press tab Aon catches 1and 2then
take out the headrest.
To refit the headrest
Insert the rods into the holes, press the
tabs on both rods and lower the head-
rest.
The headrest is a safety
component, check that it is
fitted and in the correct po-
sition.
1
A
2

front seat adjustment............................(up to the end of the DU)
front seats
adjustment ......................................(up to the end of the DU)
1.10
ENG_UD8376_2
Sièges avant (B90 - Dacia)ENG_NU_817-2_NU_Dacia_1
FRONT SEATS
To move forwards or
backwards
(depending on vehicle)
Lift bar 1or handle 4 to release. Once
in the desired position, release the bar
or handle and ensure it is correctly
locked.
To raise or lower the driver’s
seat surface
Depending on the vehicle, move
lever 2.
Heated seats
With the ignition on, press switch 3.
For safety reasons, carry
out any adjustments when
the vehicle is not being
driven.
We would advise you not to recline
the seatbacks too far to ensure that
the effectiveness of the seat belts is
not reduced.
Make sure that the seatbacks are
correctly locked in place.
Nothing should be placed on the
floor (area in front of driver) as such
objects may slide under the pedal
during braking manoeuvres, thus
obstructing its use.
1
23
The system, which has a thermostat,
decides whether or not the heating is
needed.
To tilt the seatback
Move handle 5and tilt the seatback to
the desired position.
To adjust the lumbar support
on the driver’s seat
(depending on vehicle)
Turn control knob 6.
4
6
5
2

adjusting your driving position ..............(up to the end of the DU)
seat belts ..............................................(up to the end of the DU)
1.11
ENG_UD5460_1
Ceintures de sécurité (U90 - Dacia)ENG_NU_817-2_NU_Dacia_1
Ceintures de sécurité
SEAT BELTS
Always wear your seat belt when trav-
elling in your vehicle. You must also
comply with the legislation of the par-
ticular country you are in.
Before starting:
– first ensure that your driving posi-
tion is correctly adjusted,
– then adjust your seat belt to pro-
vide maximum protection.
Incorrectly adjusted seat-
belts may cause injuries in
the event of an accident.
The seatbelt is for the use
of one person only, whether adult or
child.
Even pregnant women should wear
a seat belt.
If this is the case, ensure that the
lap belt is not exerting too much
pressure on the abdomen but do not
allow any slack.
Adjusting your driving
position
– Sit well back in your seat (having
first removed your coat or jacket).
This is essential to ensure your back
is positioned correctly.
– Adjust the distance between the
seat and the pedals.
Your seat should be as far back as
possible while still allowing you to
depress the clutch pedal fully. The
seatback should be adjusted so that
your arms are slightly bent when you
hold the steering wheel.
– Adjust the position of your head-
rest.
For safety reasons, the top of your
head should be in line with the top of
the headrest.
– Adjust the height of the seat.
This adjustment allows you to select
the seat position which offers you the
best possible view.
Adjusting the seat belts
Sit with your back firmly against the
seatback.
Shoulder strap 1should be as close as
possible to the base of the neck but not
on it.
The lap strap 2should be worn flat over
the thighs and against the pelvis.
The belt should be worn so that it is
as close as possible to your body, i.e.
avoid wearing heavy clothing or keep-
ing bulky objects under the belts.
1
2

seat belts ..............................................(up to the end of the DU)
adjusting your driving position ..............(up to the end of the DU)
1.12
ENG_UD8378_2
Ceintures de sécurité avant (B90 - Dacia)ENG_NU_817-2_NU_Dacia_1
FRONT SEAT BELTS
If your seat belt becomes completely
jammed:
– pull the belt slowly but firmly so that
just over 3 cm unwinds;
– then allow the seat belt to rewind au-
tomatically;
– unwind it again;
– if there is still a problem, contact your
approved dealer.
çSeat belt reminder
light
Depending on the country, it comes on
when the engine is started if the driv-
er’s seat belt is not fastened. When
the vehicle is being driven, it comes on
and a bleep sounds for approximately
2 minutes until the driver’s seat belt is
fastened.
Unlocking
Press button 4on catch 5and the seat
belt will be rewound by the inertia reel.
Guide the buckle to help the operation.
Adjusting the height
of the seat belt
Move button 1to select the position you
require so that shoulder strap 2is worn
as described above.
Make sure that the seat belt is locked
in position correctly after you have ad-
justed it.
3
2
5
4
5
To fasten
Unwind the belt slowly and smoothly
and ensure that buckle 3locks into
catch 5(check that it is locked by pull-
ing on buckle 3). If the belt jams, allow
it to return slightly before attempting to
unwind it again.
1

seat belts ..............................................(up to the end of the DU)
1.13
ENG_UD5550_1
Ceintures de sécurité arrière (B90 - Dacia)ENG_NU_817-2_NU_Dacia_1
REAR SEAT BELTS
Rear inertia reel seat belts
Slowly unwind the belt 1from its hous-
ing 2.
Click the buckle into black catch 3.
Fasten sliding buckle 4into the red
catch 5.Rear lap belt with manual
adjustment 6
The strap should be worn flat over your
thighs and against your pelvis.
The belt should be worn so that it is
as close as possible to your body, i.e.
avoid wearing heavy clothing or keep-
ing bulky objects under the belts.
To tighten, pull on free section 7of the
belt.
To loosen, tilt adjusting buckle 9per-
pendicular to the seat belt, press the
buckle on the ring side while pulling lap
belt 8.
Check that the rear seat belts are positioned and operating correctly each
time the rear seats are moved.
7
9
8
6
12
3
4
5

seat belts ..............................................(up to the end of the DU)
children.................................................(up to the end of the DU)
1.14
ENG_UD7651_2
Ceintures de sécurité : avertissement (B90 - L90 Ph2 - Dacia)ENG_NU_817-2_NU_Dacia_1
SEAT BELTS
The following information applies to the vehicle’s front and rear seat belts.
– No modification may be made to the component parts of the restraint system (belts and seats and their mountings)
fitted originally.
For special cases (for example, fitting child seats) consult an approved dealer.
– Do not use devices which give any slack in the belts (e.g. clothes pegs, clips, etc.), as a seat belt which is worn too loosely
risks causing injury in the event of an accident.
– Never wear the shoulder strap under your arm or behind your back.
– Never use the same belt for more than one person and never hold a baby or child on your lap with your seat belt around
them.
– The belt should never be twisted.
– Following an accident, have the seat belts checked and replaced if necessary. Always replace your seat belts as soon as
they show any signs of wear.
– When putting back the rear bench seat, take care that the seat belts are correctly positioned so that they can be used prop-
erly.
– Make sure that the buckle is inserted into the appropriate catch.

air bag...................................................(up to the end of the DU)
seat belts ..............................................(up to the end of the DU)
methods of restraint in addition to the front seat belts(up to the end of the DU)
1.15
ENG_UD8379_3
Dispositifs complémentaires à la ceinture avant (B90 - L90 Ph2 - Dacia)ENG_NU_817-2_NU_Dacia_1
Methods of restraint in addition to the front seat belts
METHODS OF RESTRAINT IN ADDITION TO THE FRONT SEAT BELTS
These are:
– pretensioners,
– force limiter,
– air bags for driver and front pas-
senger.
These systems are designed to act
independently or together when the
vehicle is subjected to a frontal impact.
There are three possibilities, depending
on the level of impact force:
– protection is provided by the seat
belt only;
– the pretensioner is triggered to rec-
tify belt position and take up seat belt
slack;
– the air bag and the force limiter are
also triggered when there are severe
impacts.
– Have the entire restraint
system checked following
an accident.
– No operation whatsoever
is permitted on any part of the
system (air bags, electronic con-
trol units, wiring) and the system
components must not be reused
on any other vehicle, even if iden-
tical.
– To avoid premature triggering
of the system which may cause
injury, only qualified Network
personnel are authorised
to work on the methods of
restraint in addition to the front
seat belt.
– The electric trigger system may
only be tested by a specially
trained technician using special
equipment.
– When the vehicle is scrapped,
contact an approved dealer for
disposal of the pretensioner and
airbag gas generators.
Pretensioners
With the ignition on, in the event of a
serious frontal impact, piston instantly
retracts the seat belt buckle, pulling the
seat belt against the body and thereby
increasing its efficiency.

1.16
ENG_UD8379_3
Dispositifs complémentaires à la ceinture avant (B90 - L90 Ph2 - Dacia)ENG_NU_817-2_NU_Dacia_1
Jaune Noir Noir texte
METHODS OF RESTRAINT IN ADDITION TO THE FRONT SEAT BELTS (continued)
Driver’s and passenger
air bags
These may be provided for the driver
and the front passenger seats.
The presence of this equipment is in-
dicated by the words “Air bag” on the
steering wheel and the dashboard, and
a label on the base of the windscreen or
on the sun visor.
Each air bag system consists of:
– an air bag and gas generator fitted
on the steering wheel for the driver
and in the dashboard for the front
passenger,
– a computer for both systems, which
includes the impact sensor and a
monitor controlling the electrical trig-
ger system for the gas generator;
– a single warning light åon the
instrument panel.
Load limiter
Above a certain level of impact force,
this mechanism is used to limit the force
of the belt against the body so that it is
at an acceptable level.
The air bag system uses
pyrotechnic principles. This
explains why, when the air
bag inflates, it will gener-
ate heat, produce smoke (this does
not mean that a fire is about to start)
and make a noise upon detonation.
An air bag may inflate immediately,
causing some minor, superficial
grazing to the skin or other discom-
fort.