2003 SKODA FABIA four wheel drive

Seat belts113
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anceTechnical DataFabia Praktik
The physical principle of a frontal
collision
The physical principle of a frontal accident can be explained quite simply: As soon as the vehicle is moving, so-called kinetic energy (the energy of
motion) is produced both in terms of the car as well as in terms of the
occupants. The magnitude of this kinetic energy depends essentially on
the speed at which the vehicle is travelling and on the weight of the vehicle
and the occupants. The greater the speed and weight increase, the
greater the amount of energy which has to be absorbed in the event of an
accident.
The speed of the vehicle is, nevertheless, the most important factor.
Doubling the speed of the vehicle from 25 km/h up to 50 km/hour
increases the kinetic energy four times.
The common opinion that it is possible to support your body in a minor
accident with your hands, is incorrect. Even in a collision at only a low
speed, the forces acting on the body are such that it is no longer possible
to support your body.
Even if you only drive at a speed within the range from 30 km/hour to 50
km/hour, the forces which are produced on your body in the event of an
accident can easily exceed 10,000 N (Newton). This equals a weight of
one tonne (1.000 kg).
In the event of a frontal collision, occupants of the vehicle not wearing a
seat belt are thrown forward and strike parts of the interior of the vehicle,
such as the steering wheel, dash panel, windscreen in an uncontrolled
manner
⇒fig. 91. The occupants of a vehicle who have not fastened their
seat belts may even be thrown out of the vehicle. This can result in fatal
injuries.
It is also important that rear seat passengers fasten their seat belts as they
will otherwise be thrown through the vehicle in an uncontrolled manner in
the event of an accident. A rear seat passenger who has not fastened the
seat belt is a danger not only to himself but also for those seated at the
front ⇒fig. 92 .
Fig. 91 The driver is
thrown forward if not
wearing a belt
Fig. 92 The rear seat
occupant is thrown
forward if not wearing a
belt

Intelligent Technology
142
Switching off
You can switch the ESP off and on again as you wish, by pressing the
button ⇒ page 141, fig. 115. The ESP warning light ⇒ page 34 lights up
in the instrument cluster when the ESP is switched off.
The ESP should normally always be switched on. It may be good practice
in certain exceptional cases, such as when you wish to have wheel slip,
to switch off the TCS.
Examples:
•when driving with snow chains,
•when driving in deep snow or on a loose surface,
•when it is necessary to rock a car free when it has become stuck.
Then you should switch on the ESP again.
Note
•All four wheels must be fitted with the same tyres in order to achieve
problem-free operation of the ESP. Differing rolling circumferences of the
tyres can lead to an undesirable reduction in the engine output.
•Changes to vehicle (e.g. on engine, on the brakes, on chassis or other
assignment of tyres and wheels) can influence the function of the ESP
⇒ page 194.
Traction control system (TCS)*
The traction control system prevents the driven wheels
from spinning when accelerating.
General
The TCS makes it much easier, and sometimes at all possible, to start off,
accelerate and climb a steep hill when the conditions of the road surface
are unfavourable.
Operating principle
The TCS switches on automatically when the engine is started and then
conducts a self-test. The system monitors the speeds of the driven wheels
with the aid of the ABS sensors. If the wheels are spinning, the force trans-
mitted to the road surface is automatically adapted by reducing the engine
speed. This occurs at all speeds.
The TCS operates in combination with the ABS ⇒page 145. The TCS will
not function if a fault exists in the ABS system.
WARNING
It is also not possible for the ESP to overcome the physical limits
of the vehicle. Even if a vehicle fitted with ESP you should still
always adapt your style of driving to the condition of the road
surface and the traffic situation. This particularly applies when
driving on slippery and wet roads. The increased safety offered
must not tempt you to take greater risks than otherwise - risk of an
accident!Fig. 116 TCS switch

Intelligent Technology143
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The TCS warning light
⇒page 33 lights up in the instrument cluster when
there is a fault on the TCS.
Switching off
You can switch the TCS off and on again as you wish by pressing the
button ⇒page 142, fig. 116 . The TCS warning light ⇒page 33 lights up
in the instrument cluster when the TCS is switched off.
The TCS should normally always be switched on. It may be good practice
in certain exceptional cases, such as when you wish to have wheel slip,
to switch off the TCS.
Examples:
•when driving with snow chains
•when driving in deep snow or on a loose surface
•when it is necessary to rock a car free when it has become stuck
then you should switch on the TCS again.
The EDL ⇒page 143 is a part of the TCS. THE EDL operates independ-
ently of the TCS (also when the TCS has been switched off using the TCS
button).
Note
•All four wheels must be fitted with the same tyres in order to achieve
problem-free operation of the TCS. Differing rolling circumferences of the
tyres can lead to an undesirable reduction in the engine output.
•Changes to vehicle (e.g. on engine, on the brakes, on chassis or other
assignment of tyres and wheels) can influence the function of the TCS
⇒ page 194.
Electronic Differential Lock (EDL)*
The electronic differential lock prevents an individual
wheel from slipping.
Models fitted with TCS can be also equipped with electronic differential
lock (EDL).
General
The EDL makes it much easier, and sometimes at all possible, to start off,
accelerate and climb a steep hill when the conditions of the road surface
are unfavourable.
Operating principle
The EDL is activated automatically, that is without any action on the part
of the driver. It monitors the speeds of the driven wheels with the aid of the
ABS sensors. Should only one drive wheel begin spinning on a slippery
surface there will be an appreciable difference in the speed of the driven
wheels. The EDL function brakes the slipping wheel and the differential
transmits a greater driving force to the other driven wheel. This control
process is also accompanied by noises.
WARNING
You should always adjust your style of driving to the conditions of
the road surface and the traffic situation. The increased safety
offered must not tempt you to take greater risks than otherwise -
risk of an accident!

Wheels and Tyres191
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anceTechnical DataFabia Praktik
For the sake of the environment
Old tyres must be disposed of in conformity with the appropriate regula-
tions.
Note
It is not normally possible to fit wheels from other models of cars for tech-
nical reasons. This may also apply in certain circumstances to the wheels
of the same type of vehicle.
Wheel bolts
Wheels and wheel bolts are matched to each other in terms of design.
Each time you fit other wheels - e.g. light alloy wheels or wheels with
winter tyres - you must therefore also use the matching wheel bolts of the correct length and shape of spherical cap. This is essential to ensure that
the wheels are tightly fitted and that the brake system operates properly.
If you retrofit
wheel trims (or have this done), please also ensure that an
adequate flow of air remains assured for cooling the brake system.
Škoda dealers are instructed in the technical possibilities which exist
regarding converting or retrofitting wheels, tyres and wheel trim.
The wheel bolts must be clean and must turn easily.
Winter tyres
The handling of your vehicle will be significantly improved when driving on
wintry roads and at temperatures below 7 °C if you fit winter tyres.
Summer tyres do not offer the same grip on ice and snow because of their
construction (width, rubber blend, tread pattern). This particularly applies
to vehicles which are equipped with low-profile tyres or high-speed
tyres (code index V or W on wall of tyre).
Winter tyres must be mounted on all four wheels to obtain the best
handling characteristics.
Only use radial winter tyres.
You must only fit those types of winter tyre which are approved for your
vehicle. The permissible sizes of winter tyres are stated in your vehicle
documents. Approvals may differ because of national legislation.
Please remember that the tyres should be inflated to 0.2 bar more than is
the case for summer tyres ⇒page 187.
Winter tyres no longer offer the same winter performance once the tyre
tread has worn down to a depth of about 4 mm.
Ageing also causes winter tyres to lose most of their winter performance
properties - even in cases where the remaining tread depth is still clearly
more than 4 mm.
WARNING (continued)
•You must on no account drive at a higher speed than is permis-
sible for your tyres - risk of an accident resulting from tyre damage
and loss of control over your vehicle.
•Tyres which are 6 years old or more should only be fitted in
exceptional cases and when adopting an appropriately cautious
style of driving.
•Never fit tyres which have already been used without having
adequate knowledge of their previous history. Tyres age even if
they have not been used at all or only very little. A spare tyre must
only be used in exceptional cases and only then when adopting an
appropriately cautious style of driving.
•Do not, where possible, replace individual tyres but at least
replace them on both wheels of a given axle at the same time.
Always fit the tyres with the deeper tread depth to the front wheels.