ignition SKODA SUPERB 2003 1.G / (B5/3U) Repair Manual

Airbag system
154
Deactivating an airbag
Deactivating airbags
If any airbags have been deactivated, switch them on
again as soon as possible so that they are able to again
provide their proper protection.
There is the technical means installed within your vehicle to switch off the
front, side or head airbag (take out of commission).
This is why you should have the deactivation of the airbags carried out by
a Škoda dealer. On vehicles equipped with the switch for deactivation of the airbags, you
can deactivate the front and side passenger airbag by means of this
switch
⇒page 155.
Deactivation of airbags is envisaged only for particular instances,
such as if
•Yo u m u s t i n exceptional cases use a child seat on the front
passenger seat where the child is seated with its back to the direction of
travel (in some countries this must be in the direction of travel due to other
legal regulations applying) ⇒page 157.
•You are not able to maintain the distance of at least 25 cm between
middle of steering wheel and chest, despite the driver seat being correctly
adjusted.
•Special attachments are required in the area of the steering wheel
because of a physical disability.
•You have installed other seats (e.g. orthopaedic seats without side
airbags).
Monitoring the airbag system
The functionality of the airbag system is monitored electronically, also
when the airbags have been switched off
An airbag which has been switched off by a Skoda dealer using the
vehicle system tester:
•The warning light for the airbag system lights up for 3 seconds after
switching on the ignition and then flashes for 12 seconds afterwards in 2
second intervals.
Front passenger airbags switched off using the switch for front
passenger airbags* in stowage compartment on the front passenger
side:
•The airbag indicator light in the instrument cluster comes on for about
3 seconds each time the ignition is switched on.
WARNING (continued)
•The sun visors must not be swivelled to the side windows into
the deployment area of the head airbags if any objects, such as
ball-point pens etc. are attached to them. This might result in inju-
ries to the occupants if the head airbag is deployed.
•Installing accessories in the area of the head airbag may
considerably impair the protection offered by the head airbag in
the event of it being deployed. When the deployed head airbag is
inflated, parts of the accessories fitted may in certain circum-
stances be thrown into the interior of the car and cause injuries to
the occupants.
•Any work on the head airbag system including installing and
removing system components because of other repair work (e.g.
removing headliner) must only be carried out by a Škoda Dealer.

Airbag system155
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
•Switching off airbags is indicated ⇒page 155 in the middle of the dash
panel by the lighting up of the indicator light  .
Note
Your Škoda dealer will be able to advise you whether national legislation
in your country allows airbags in your vehicle to be deactivated, and which
ones.
Switch for the front seat passenger airbags*
The front and side passenger airbag is deactivated with the
switch.
Deactivating airbags
– Switch off the ignition.
– Turn the slot of the airbag switch using the main or emergency key in the direction of the arrow to the position OFF ⇒ fig. 135.
The slot of the airbag switch must be located in the vertical
position.
– Check whether the airbag indicator light
  in the
middle of the dash panel lights up ⇒fig. 136 when the ignition
is turned on.
Switching on airbags
– Switch off the ignition.
Fig. 135 Storage
compartment: Switch
for the front seat
passenger airbags
Fig. 136 Indicator light
for a switched off front
seat passenger airbag

Airbag system
156
– Turn the slot of the airbag switch using the main or emergency key in the opposite direction of the arrow to the position ON
⇒ page 155, fig. 135. The slot of the airbag switch must be
located in the horizontal position.
– Check whether the airbag indicator light
  in the
middle of the dash panel lights up ⇒page 155, fig. 136 when
the ignition is turned on.
The airbags should only be switched off under exceptional circumstances
⇒ page 154.
Indicator light
  (airbag switched off)
The airbag indicator light in the middle of the dash panel does not light up
⇒ page 155, fig. 136 .
If the front passenger airbag is switched on, the airbag warning light
comes on for a few seconds each time the ignition is switched on.
When the front and side passenger airbag is switched off, the indicator
light comes on after the ignition is switched on.
There is a system fault present in the airbag switch off ⇒ if the indi-
cator light flashes. Please have the vehicle inspected without delay by
a Škoda dealer.
WARNING
•Only switch off the airbag when the ignition is switched off!
Otherwise a fault can arise on the airbag system and therefore
could cause the airbag to trigger.
•The driver is responsible for whether the airbag is switched on
or switched off.
•If the indicator light flashes:
WARNING (continued)
− There is a risk of the front passenger airbag or the side
passenger airbag not being deployed in the event of an acci-
dent.
− There is the risk, if someone is sitting on the front passenger
seat, that the front passenger will suffer injury if the airbag is
suddenly deployed.

Driving and the Environment177
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
New brake pads
Allow for the fact that new brake pads do not achieve their full braking effi-
ciency until after the first 200 kilometres. New brake pads must be first
“run in” before they develop their optimal friction force. You can, however,
compensate for this slightly reduced braking force by increasing the pres-
sure on the brake pedal.
This guideline also applies to any new brake pads installed at a future
date.
During the running-in period, you should avoid excessive stresses on the
brakes. This includes, for example, violent braking, particularly from very
high speeds, and also when crossing mountain passes.
Catalytic converter
Proper operation of the emission control system (catalytic
converter) is of major significance for driving your vehicle
in an environmentally conscious way.
Please refer to the following guidelines:
– Always fill the fuel tank with unleaded petrol ⇒page 198,
“Grades of petrol”.
– Never run the fuel tank completely empty.
– Do not switch off the ignition while you are driving the vehicle.
– Do not pour too much oil into the engine ⇒page 207,
“Replenishing engine oil”. – Do not tow-start the vehicle over a distance of more than 50
metres ⇒page 239, “Tow-starting a vehicle”.
If you drive your vehicle in a country in which unleaded petrol is not avail-
able, you must have the catalytic converter replaced later when driving the
vehicle into a country in which use of a catalytic converter is mandatory.
Caution
•Vehicles fitted with catalytic converter should never be allowed to let
the fuel tank to run completely empty. An irregular fuel supply can result
in poor ignition or misfiring. Unburnt fuel may get into the exhaust system
and damage the catalytic converter.
•Filling the tank even only once with leaded petrol will result in the cata-
lytic converter being destroyed.
•If you detect misfiring, a drop in performance or irregular engine
running when driving, reduce your speed immediately and have the
vehicle inspected by the nearest Škoda dealer. The symptoms described
may be caused by a fault in the ignition system. Unburnt fuel may get into
the exhaust system and damage the catalytic converter.
WARNING
•In view of the high temperatures which may be produced in the
catalytic converter, one should always park a vehicle in such a way
that the catalytic converter cannot come into contact with easily
flammable materials below the vehicle - a risk of fire!
•Never use additional underbody protection or corrosion-
protection agents for the exhaust pipes, catalytic converters or
heat shields. Such substances might ignite when driving - risk of
fire!

Care and cleaning
190
Automatic vehicle wash systems
The paintwork of the vehicle is sufficiently resistant that the vehicle can be
washed normally in automatic vehicle wash plants without any problem.
The actual stress to which the paintwork is subjected, however, depends
greatly on the design of the vehicle wash system, the filtering of the water
and the type of washing and care products used. If the paintwork of your
vehicle appears mat after being washed or even has scratches, point this
out to the operator of the vehicle wash plant. Use a different vehicle wash
plant, if necessary.
There are no particular points to note before washing your vehicle in such
a plant other than the usual precautionary measures (closing windows
and sliding/tilting roof, moving any factory-fitted aerials down flat against
the bodywork, etc.).
If you have any particular attached parts fitted to your car - such as spoiler,
roof rack system, two-way radio aerial - it is best to first of all consult the
operator of the car wash plant.
It is important to degrease the lips of the windscreen wiper rubbers after
passing through the automatic vehicle wash system.
Caution
Do not screw the swivelling down roof aerial tight before washing the
vehicle in an automatic vehicle wash system - risk of damage!
Washing vehicle by hand
It is important to first soften the dirt with plenty of water and rinse it off as
thoroughly as possible before washing your vehicle by hand.
One should then clean the vehicle using a soft washing sponge,
washing glove or a washing brush and only slight pressure. Work from
the top to the bottom - beginning with the roof. Only place slight pressure
on the vehicle paintwork during cleaning Only use a shampoo for stub-
born dirt.
Wash out the sponge or washing glove thoroughly at short intervals.
Clean wheels, door sills and similar parts last. Use a second sponge for
such areas.
Rinse off the vehicle well after giving it a wash and dry it off using a
chamois leather.
Caution
•Do not wash your vehicle in bright sunlight - risk of paint damage.
•Ensure that the jet of water is not aimed directly at the locks or at the
door and panel joints if you spray your vehicle in winter down with a hose
- risk of freezing.
•Do not use any insect sponges, rough kitchen sponges or similar
cleaning products - risk of damage to the surface of paintwork.
WARNING
When washing your vehicle in the winter: Water and ice in the
brake system can affect the braking efficiency - risk of accident.
WARNING
•The ignition should always be switched off when you wash your
vehicle - risk of accident!
•Protect your hands and arms from sharp-edged metal parts
when you are cleaning the underfloor, the inside of the wheel hous-
ings or the wheel trims - risk of cuts.

Care and cleaning197
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
Skoda dealers have the cleaning agents and preservatives recommended
by the manufacturer and also the required equipment.
Caution
•Engine cleaning may be only be undertaken when the ignition is off.
•It is recommended to cover the generator before washing the engine
compartment.
For the sake of the environment
The dirty water produced by washing the engine has washed away petrol,
and residues of grease and oil and should therefore be cleaned by an oil
separator. This is why engine washing should only be undertaken in a
garage or at a fueling station (when these are fitted with the required
equipment).
WARNING
It is necessary to observe the guidelines given in the chapter
before working on the engine compartment ⇒page 203.

Fuel
198
Fuel
Petrol
Grades of petrol
There are various grades of petrol. Please read the brochure “Technical
Data” in order to know which grade of petrol your vehicle requires. You will
also find the same information affixed to the inside of the fuel filler flap of
your vehicle ⇒page 200, fig. 151 .
A distinction is made between unleaded and leaded petrol. All Škoda vehi-
cles with petrol engines are equipped with a catalytic converter and must
therefore be only driven with unleaded petrol. Unleaded petrol complies
with the standard EN 228 .
The individual grades of petrol are distinguished by their octane number
(RON). Please adopt the following procedure if the grade of petrol which
you normally use is not be available in exceptional circumstances:
•Engines which need unleaded premium petrol 95 RON can also be
run on unleaded regular petrol 91 RON. This does, however, result in a
slight loss in performance.
•Engines which need unleaded premium petrol 98 RON can also be
run on unleaded regular petrol 95 RON. This does, however, result in a
slight loss in performance. You can in exceptional circumstances also
use unleaded regular petrol of 91 RON in the event that no unleaded
premium petrol of 98 RON or 95 RON is available. Refuel as soon as
possible with unleaded premium plus of 98 RON or unleaded premium
petrol of 95 RON.
If, in an emergency, the only fuel available is one which has a lower octane
number than that required by the engine then only drive at medium engine
speeds and lower engine loadings. You can make unlimited use of fuel which has a higher octane number
than that required by the engine. There will, however, be no advantages
gained by this in terms of engine performance and fuel consumption!
The handling, performance and life of your engine are determined to a
significant extent by the quality of the fuel. Do not use any petrol additives.
Use a fuel complying with the standard.
You can find further information on refuelling
⇒page 200.
Caution
•Filling the tank even only once with leaded petrol will result in the cata-
lytic converter being destroyed.
•Operating the engine with petrol of a low octane number can result in
engine damage at high revolutions or severe engine loading.
Diesel
Grade of diesel fuel
Grades of diesel fuel
Your vehicle can be driven with the following grades of diesel fuel:
•Diesel fuel with a cetane number of at least CN 49 (the cetane number
CN is a measure of the ignition performance of the diesel fuel). Diesel fuel
must comply with the standard EN 590 .
•Biofuel (RME rape oil methyl ester fuel) must comply with the
standard EN 51 606 . Please refer to the following guidelines
⇒ page 199.

Inspecting and Replenishing203
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
The bonnet is held in the opened position by a pressurized gas spring.
Caution
•Never open the bonnet using the handle - danger of causing damage.
•Before opening the bonnet, ensure that the arms of the windscreen
wipers are correctly in place against the windscreen. Otherwise, there is
a risk of damage to the paintwork.
Working in the en gine compartment
Particular care is required when carrying out any work in
the engine compartment!
There is a risk of injuries, scalding , accidents and fire when working
in the engine compartment, e.g. inspecting and replenishing oil and
other fluids. For this reason, it is essential to comply with the
warning instructions st ated below and with the general applicable
rules of safety. The engine compartment of your car is a hazardous
area ⇒ .
WARNING
•Never open the bonnet if you see that steam or coolant is
flowing out of the engine compartmen t - risk of scalding! Wait long
enough until the steam or coolant has stopped escaping.
•For safety reasons, the bonnet must always be properly closed
when driving. One should therefore check that the lock has in fact
engaged properly after closing the bonnet.
•Stop your vehicle immediately wh ile driving if you notice that
the lock is not properly engaged and close the bonnet properly -
risk of an accident!
WARNING
•Switch off the engine and pull out the ignition key.
•Apply the handbrake firmly.
•If your vehicle is fitted with a manual gearbox, move the gear-
shift lever into Neutral, or if it is fitted with automatic gearbox,
move the selector lever into position P.
•Allow the engine to cool down.
•Keep children clear of the engine compartment.
•Never spill oil and other fluids over the hot engine. Such fluids
(e.g. the antifreeze contained in the coolant) may ignite!
•Avoid short circuits in the electrical system - particularly on the
battery.
•Never place your hand into the radiator fan as long as the
engine is still warm. The fan might suddenly start running!
•Never open the cap of the coolant expansion bottle as long as
the engine is still warm. The cooling system is pressurized!
•Cover over the cap of the coolant expansion reservoir with a
large cloth when opening it as protection for your face, hands and
arms from hot steam or hot coolant.
•In cases where it be necessary to carry out inspection work
when the engine is running there is an additional risk from rotating
parts (e.g. the V-ribbed belt, alternator, radiator fan) and from the
high-voltage ignition system.
•Please also comply with the warning instructions stated below
when carrying out any essential work on the fuel system or on the
electrical system:
−Always separate the car battery from the electrical system.
− Do not smoke.
− Never carry out any work close to naked flames.

Inspecting and Replenishing
210
For the sake of the environment
Do not re-use coolant if it is necessary to drain the coolant in the system.
It should be collected and disposed of in compliance with environmental
protection regulations.
The radiator fan
The radiator fan may switch on suddenly.
The radiator fan is driven by an electric motor and controlled by a thermo-
stat according to the coolant temperature.
After the engine is switched off, the radiator fan may continue running for
up to 10 minutes - even if the ignition is also off. It may also switch on
suddenly after a certain time, if
•the coolant temperature has risen because of an accumulation of heat
or
•the warm engine compartment is heated up additionally by strong
sunlight.
Brake fluid
Inspecting the brake fluid level
You can also see the location of the brake fluid reservoir in the
engine compartment from the general view of the engine
compartment ⇒page 204. The brake fluid reservoir on right-
hand steering models is positioned on the other side of the
engine compartment.
– Switch the engine off.
WARNING (continued)
•The coolant additive and thus all of the coolant is harmful to
your health. Avoid contact with the coolant. Coolant vapours are
also harmful to the health. It is important, therefore, to always
safely store any coolant additive in its original container out of the
reach of children - risk of poisoning.
•If any splashes of coolant get into your eyes, rinse out your
eyes immediately with clear water and contact a doctor as soon as
possible.
•You should also consult a doctor without delay if you have
inadvertently swallowed coolant.
WARNING
You must therefore be aware when working in the engine compart-
ment that the fan may switch on suddenly - risk of injury!
Fig. 158 Engine
compartment: Brake
fluid reservoir

Inspecting and Replenishing
212
The battery
Working on the battery
Particular care is required when carrying out any work on
the battery!
The battery is located in the engine compartment in the plenum
chamber below a cover.
Taking off cover
– Press the cover in direction of arrow ⇒fig. 159 .
There is a risk of injuries, scalding, accidents and burns when carrying out
any work on the battery and on the electrical system. It is essential to
comply with the warning instructions stated below ⇒ and with the
general applicable rules of safety.
Fig. 159 Engine
compartment: plenum
chamber - battery
cover
WARNING
•The battery acid is strongly corrosive and must, therefore, be
handled with the greatest of care. Always wear protective gloves,
eye and skin protection when handling batteries. Corrosive fumes
in the air irritate the air passages and lead to conjunctivitis and
inflammation of the air passages in the lungs. Battery acid
corrodes dental enamel and creates deep wounds after contact
with the skin which take a long time to heal. Repeated contact with
diluted acids causes skin diseases (inflammations, ulcers, slin
cracks). Acids coming into contact with water are diluted accom-
panied by significant development of heat.
•Do not tilt the battery otherwise battery electrolyte may flow out
of the battery vent openings. Protect the eyes with safety glasses
or a shield! There is the danger of suffering blindness! If any
battery electrolyte gets into your eye, rinse out your eye immedi-
ately with clear water for several minutes. Contact a doctor without
delay.
•Splashes of acid on your skin or clothes should be neutralised
as soon as possible using soap suds and then rinsed with plenty
of water. Contact a doctor immediately if you swallow battery elec-
trolyte.
•Keep batteries out of the reach of children.
•Hydrogen is released when you charge a battery and a highly
explosive gas mixture is produced. An explosion can be caused
through sparkling over during unclamping or loosening of the
cable plug while the ignition is on.
•Bridging of the poles will crea te a short circuit (e.g. through
metal objects, cables). Possible consequences of a short circuit:
Melting of lead struts, explosion and burning of the battery, jets of
acid spurting out.