Assist systems
Brake assist systems
Introduction
This chapter contains information on the following subjects:
Stabilisation control (ESC)
111
Antilock Braking System (ABS)
112
Traction Control System (ASR)
112
Electronic Differential Lock (EDL and XDS)
112WARNING■ A lack of fuel can cause irregular engine running or cause the engine to shut
down. The brake assist systems would then be without function – there is the
risk of an accident.■
Adjust the speed and driving style to the current visibility, weather, road and
traffic conditions. The increased safety offered by the brake assist systems
must not tempt you to take greater risks than otherwise – there is the risk of
an accident.
■
Visit a specialist garage immediately in the event of an ABS fault. Adjust
your style of driving according to the damage to the ABS as you will not know
how great the damage is and the limitation it is placing on the braking effi-
ciency.
CAUTION
■ All four wheels must be fitted with the same tyres approved by the manufactur-
er to ensure the brake assist systems operate correctly.■
Changes to the vehicle (e.g. to the engine, brakes, chassis) can influence the
functionality of the brake assist systems » page 147, Services, modifications and
technical alterations .
■
If a fault occurs in the ABS system, the ESC, TCS and EDL will also fail to work.
An ABS fault is indicated with by the warning light » page 24.
Stabilisation control (ESC)
First read and observe the introductory information and safety warn-ings
on page 111.
The ESC system helps to maintain control of the vehicle in situations where it is
being operated at its dynamic limits, such as a sudden change to the direction of
travel. Depending on the road surface conditions, the risk of skidding is reduced,
thereby improving the vehicle's driving stability .
The ESC system is automatically activated each time the ignition is switched on.
The direction which the driver wishes to take is determined based on the steering angle and the speed of the vehicle and is constantly compared with the actual
behaviour of the vehicle. If differences exist, such as the car beginning to skid,
the ESC system will automatically brake the appropriate wheel.
During an intervention of the system, the warning light
flashes in the instru-
ment cluster.
The following systems are integrated into the electronic stabilisation control
(ESC) :
› Antilock brake system (ABS),
› Traction control (TCS),
› Electronic Differential Lock (EDL and XDS);
› Hydraulic brake assist (HBA);
› Hill hold control (HHC).
The ESC system cannot be deactivated. The
» Fig. 96 on page 112 button can
only be used to deactivate the TCS. The
warning light comes on in the instru-
ment cluster when the TCS is deactivated.
In the event of an ESC fault, the ESC warning light illuminates in the instrument cluster
» page 23 .
Hydraulic brake assist (HBA)
HBA increases the braking effect and helps to shorten the braking distance.
The HBA is activated by very rapid depression of the brake pedal. To achieve the
shortest possible braking distance, the brake pedal must be applied firmly until
the vehicle has come to a complete standstill.
HBA is automatically switched off when the brake pedal is released. ABS is activated sooner and more effectively with the intervention of HBA.
111Assist systems
WARNINGObserve the following instructions for the proper use of the seat belts.■Never use a seatbelt to secure two persons (not even children). Nor may the
seat belt be placed over a child who is sitting on the lap of another passenger.■
The lock tongue should only be inserted into the lock which is the correct
one for your seat. Wrong use of the safety belt will reduce its capacity to pro-
tect and the risk of injury increases.
■
The slot of the belt tongue must not be blocked otherwise the belt tongue
will not lock in place properly.
■
Many layers of clothing and loose clothing (e. g. a winter coat over a jacket)
do not allow you to be correctly seated and impairs proper operation of the
seat belts.
■
It is prohibited to use clamps or other objects to adjust seat belts (e. g. for
shortening the belts for smaller persons).
■
The seat belts for the rear seats can only fulfil their function reliably when
the seat backrests are correctly locked into position » page 56.
WARNINGObserve the following instructions for proper use of the seat belts.■The belt webbing must always be kept clean. Soiled belts may impair proper
operation of the inertia reel » page 157, Seat belts .■
The seat belts must not be removed or changed in any way. Do not attempt
to repair the seat belts yourself.
■
Check the condition of all the seat belts on a regular basis. If any damage to
the seat belts, seat belt connections, inertia reel or the lock is detected, the
seat belt concerned must be replaced by a specialist garage.
■
Damaged seat belts which have been subjected to stress in an accident and
were therefore stretched, must be replaced - this is best done by a specialist
garage. The anchorage points of the belts must also be inspected. The an-
chorage points for the belts should also be checked.
Note
The national legal requirements must be observed when using seat belts.
The physical principle of a frontal collisionFig. 108
Driver without a fastened seat belt/rear seat passenger without a
fastened seat belt
First read and observe the introductory information and safety warn-ings
on page 128.
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 including 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 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 notion that it is possible to support your body with your hands in a minor ac-cident is incorrect. Even in a collision at only a low speed, the forces acting on thebody are such that it is no longer possible to support your body.
Even if you only drive at a speed of 30 km/h to 50 km/h, the forces that your body is exposed to in the event of an accident can exceed a ton (1000 kg).
For example, a person's weight of 80 kg “increases” at 50 km/h to 4.8 tons
(4800 kg).
In the event of a frontal collision, occupants of the car not wearing a seat belt are
thrown forward in an uncontrolled way and strike parts of the interior of the car,
such as the steering wheel, dash panel or windscreen » Fig. 108 -
. In certain
circumstances you could even be thrown out of the vehicle, which could cause life threatening or even fatal injuries.
129Seat belts
Wheels
Tyres and rims
Introduction
This chapter contains information on the following subjects:
Tyre service life
174
New tyres
175
Unidirectional tyres
176
Tyre pressure monitor
176
Spare wheel
177
Full wheel trim
178
Wheel bolts
178
Hubcaps
178
Wheel bolts
179WARNING■ National legal requirements must be observed for the use of tyres.■Observe the national legal regulations relating to the use of snow chains
and the maximum vehicle speed with snow chains.WARNINGThe following instructions for the use of tyres must be observed.■During the first 500 km, new tyres do not offer optimum grip and appropri-
ate care should therefore be taken when driving – there is the risk of an acci-
dent.■
On all four wheels, use only radial tyres of the same type, size (rolling cir-
cumference) and the same tread pattern.
■
For safety reasons, do no replace tyres individually.
■
Never exceed the maximum permissible load bearing capacity of the tyres
fitted – there is the risk of an accident.
■
Never exceed the maximum permissible speed of the tyres fitted – there is
the risk of an accident.
WARNING (Continued)■ Incorrect wheel alignment at the front or rear impairs handling – there is the
risk of an accident.■
Unusual vibrations or pulling of the vehicle to one side could be a sign of
tyre damage. If there is any doubt that a wheel is damaged, immediately re-
duce your speed and stop! If no external damage is evident, drive slowly and
carefully to the nearest specialist garage to have the vehicle checked.
■
Only use those tyres or wheel rims which have been approved by ŠKODA for
your model of vehicle. Failure to observe this instruction will adversely affect
the road safety of your vehicle – there is the risk of an accident.
WARNINGObserve the following information regarding tyre damage and wear.■Never use tyres if you do not know anything about the condition and age.■
Never drive with damaged tyres – there is the risk of an accident.
■
Immediately replace damaged wheel rims or tyres.
■
You must have your tyres replaced with new ones at the latest when the
wear indicators have been worn down.
■
Worn tyres do not provide the necessary grip particularly at high speeds on
wet roads. “Aquaplaning” (uncontrolled movements of the vehicle – “swim- ming” on a wet road surface) could be the result.
WARNINGObserve the following information regarding the tyre pressure.■The tyre control display does not absolve the driver of the responsibility to
ensure the correct tyre inflation pressure. Check the tyre pressure at regular
intervals.■
Pressures that are too low or too high impair handling – there is the risk of
an accident.
■
If the pressure is too low, the tyre must overcome a greater rolling resist-
ance. This will heat the tyre up, especially at higher speeds. This can result in tread separation and a tyre blowout.
173Wheels
Always check the inflation pressure when the tyres are cold. Do not reduce the
higher pressure of warm tyres.
Adjust the tyre pressure accordingly if you are carrying a greater load.
Driving style
Fast cornering, sharp acceleration and braking increase the wear of your tyres.
Balancing wheels
The wheels of a new vehicle are balanced. There are a wide range of influences
when the car is being driven which may result in an imbalance. This may become
apparent by “vibration” in the steering.
Have the wheels rebalanced after replacing the tyres.
Wheel alignment errors
Incorrect wheel alignment at the front or rear leads to excess wear on the tyres.
Tyre damage
Drive over kerbs and other such obstacles slowly and at right angles wherever
possible in order to avoid damage to tyres and wheel trims.
We recommend checking your tyres and wheel rims for damage (punctures, cuts,
splits and bulges, etc.) on a regular basis. Remove foreign bodies (e.g. small
stones) from the tyre profile immediately.
Swapping wheels around
If significantly greater wear is present on the front tyres, we recommend swap-
ping the front wheels with the rear wheels as shown in the diagram » Fig. 133.
You will then obtain approximately the same life for all the tyres.
We recommend that you swap the tyres around every 10,000 km in order to ach-ieve even wear on all tyres and to obtain optimal tyre life.
Storing tyres
Mark the tyres as you remove them so that you are able to refit them to run in the
same direction.
Always store wheels or tyres in a cool, dry and, where possible, dark place. Tyres which are not fixed to a wheel trim should be stored upright.
Wear indicators
The base of the tread of the tyres has 1.6 mm high wear indicators installed.
These wear indicators are arranged evenly spaced around the circumference of
the tyre a number of times depending on the make » Fig. 132 -
. Markings on the
walls of the tyres through the letters “TWI”, triangular symbols or other symbols identify the position of the wear indicators.Tyre age
Tyres age losing their original characteristics, even if they are not used. There-
fore, we recommend that you do not use summer or winter tyres that are older
than 6 years or 4 years respectively.
New tyres
First read and observe the introductory information and safety warn-
ings
on page 173.
Only fit radial tyres of the same type, size (rolling circumference) and the same
tread pattern on one axle on all four wheels.
The tyre/wheel combinations which are approved for your vehicle are indicated in
your vehicle documents.
Where possible replace tyres by axle. Always fit the tyres with the deeper tread
depth to the front wheels.
Explanation of tyre markings
185/65 R 14 86 T
What this means is:
185Tyre width in mm » Fig. 132 on page 174 - 65Height/width ratio in % » Fig. 132 on page 174 - RCode letter for the tyre construction – Radial » Fig. 132 on page 174
- 14Diameter of wheel in inches » Fig. 132 on page 174 - 86Load index » TSpeed symbol »
The date of manufacture is stated on the tyre wall (possibly only on the inside of
wheel ). e.g.
DOT ... 10 13...
means, for example, that the tyre was manufactured in the 10th week of 2013.
Load index
This indicates the maximum permissible load on each individual tyre. 487 kg
515 kg
8385175Wheels