2008 SKODA OCTAVIA check engine

Driving and the Environment205
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
Avoid driving short distances
Short distances result in an above-average high fuel consumption.
– Avoid driving a distance of no more than 4 km if the engine is cold.
The engine and catalytic converter mu st first have reached their optimal operating
temperature in order to effectively reduce fu el consumption and pollutant emis-
sions.
The cold engine vehicle consumes approx. 15 - 20 litres/100 km of fuel immediately
after starting. Fuel co nsumption drops to 10 litres/100 km after just 1 kilometre. The
engine reaches its operating temperat ure (outside temperature and engine
dependent) only after about 4 to 10 kilometres and the fuel consumption then
stabilizes. You should therefore avoid driving short distances whenever possible.
An important factor in this connection is also the ambient temperature. The
⇒ fig. 203 shows the different fuel consumptions for the same distance, on the one
hand at +20°C and on the other hand at -10°C. Your vehicle has a higher fuel
consumption in winter than in summer.
Checking tyre inflation pressures
Tyres which are correctly inflated save fuel.
Always ensure that your tyres are inflated to the correct pressure at all times. The
rolling resistance will be increased if the tyre filling pressure is too low. This will not only increase fuel consumption but also
tyre wear and the driving behaviour will
worsen.
Always check the inflation pressure of the tyres when cold.
Do not drive with winter tyres all year round for this costs about 10 % more fuel.
Winter tyres are also louder.
No unnecessary ballast
Transporting ballast costs fuel.
The fact that every kilogram of extra weight increases your fuel consumption
means that it is worth taking a look in the luggage compartment to avoid trans-
porting any unnecessary ballast.
It is particularly in town traffic, when one is accelerating quite often, that the vehicle
weight will have a significant effect upon the fuel consumption. A rule of thumb
here is that an increase in weight of 100 kilograms will cause an increase in fuel
consumption of about 1 litre/100 kilometres.
You may frequently also leave a roof rack fitted on just out of convenience,
although you no longer need it. The incr eased aerodynamic drag of your vehicle
causes it to use about 10% more fuel th an normal at a speed of 100 - 120 km/h,
even when you are not carr ying a load on the roof.
Saving electricity
Generating electricity costs fuel.
– Switch off electrical components as soon as you no longer need them.
When the engine is running, the alternator generates and supplies electrical power.
The greater the load on the alternator as a result of having a large number of elec-
trical components switched on, the more fuel will be consumed for operating the
alternator.
Fig. 203 Fuel consumption
in litres/100 km at different
temperatures
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Driving and the Environment
206
Keeping a log of your fuel consumption
If you really wish to ke ep a close check on your fuel consumption, it is best to enter
the figures in a logbook. This does not take much time but is a very worthwhile exer-
cise. It enables you to detect any change (positive and negative) at an early stage
and to take any appropriate action.
If you find that your fuel consumption is too high, you sh ould reflect on how, where
and in what conditions you have driven the vehicle since you last refuelled.
Environmental compatibility
Environmental protection has played a majo r role in the design, selection of mate-
rials and manufacture of your new Škoda. Particular emphasis has been paid to a
number of aspects, including:
Design measures
•Joints designed to be easily detached.
•Simplified disassembly due to the modular structure system.
•Improved purity of differ ent classes of materials.
•Identification of all plastic parts in accordance with VDA Recommendation 260.
•Reduced fuel consumption and exhaust emission CO2.
•Minimum fuel leakage during accidents.
•Reduced noise.
Choice of materials
•Extensive use of recyclable material.
•Air conditioning filled with CFC-free refrigerant.
•No cadmium.
•No asbestos.
•Reduction in the “vaporisation” of plastics.
Manufacture
•Solvent-free cavity protection.
•Solvent-free protection of the vehicle for transportation from the production
plant to the customer.
•The use of solvent-free adhesives.
•No CFCs used in the production process.
•Without use of mercury.
•Use of water-soluble paints.
Motoring abroad
General
Other circumstances may exist abroad.
It is also possible, in ce rtain countries, that the Škod a Service Partner network is
limited or has not been established yet. This is the reason why obtaining certain
spare parts may be somewhat complicated and specialist garage personnel may
only be able to ma ke li mite d re pa irs. Škoda Auto a.s. i n the Czech Republic and rele -
vant importers are happy to provide info rmation about technical aspects of the
vehicle, required maintenance work and possibilities for getting repairs done.
Unleaded petrol
A vehicle fitted with a petrol engine must always be refuelled with unleaded petrol
⇒ page 202. The automobile associations can provide you with information
regarding the locations of filling stations which offer unleaded petrol.
Headlight
The low beam of your headlights is set asym metrically. It illuminates the side of the
road on which you are driving to a greater extent. If you drive abroad on the other
side of the road, you wi ll dazzle oncoming traffic.
In order to prevent the dazzling of oncoming traffic, it is necessary that an adjust-
ment of the headlights is carried out by your Škoda Service Partner.
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Towing a trailer209
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
should be attached to folding arms. Adjust
the mirrors so that they provide you with
an adequate field of view to the rear.
Headlights
Before starting off with a hitched trailer, also check the setting of the headlights.
Alter the setting as necessary with th e aid of the headlight beam adjuster
⇒ page 64.
Detachable ball head
The ball rod is detachable on vehicles which feature a factory-fitted towing device.
It is stowed together with separate fitting instructions in the spare wheel well in the
luggage compartment of the vehicle.
Further information on the towing device ⇒page 210.
Note
•We recommend that you also have your vehicle inspected between service
intervals if you tow a trailer frequently.
•The handbrake on the towing vehicle must be put on when coupling and
decoupling the trailer.
Driving Tips
Particular caution is required when towing a trailer.
– Do not, as far as possible, drive with your vehicle unladen and the
trailer laden.
– Do not make full use of the legal maximum speeds. This applies in particular to downhill sections.
– Apply the brakes in good time.
– Keep a check on the coolant temperature gauge if the outside temper- ature is high.
Distribution of weight
The distribution of the weight is very poor if your vehicle is unladen and the trailer
is laden. Maintain a particularly low speed if you cannot avoid driving with this
combination.
Driving speed
Do not drive faster than 80 km/hour for safety reasons. This also applies for coun-
tries in which higher speeds are allowed.
The fact that the driving stability of the vehicle + trailer combination reduces with
increasing speed means that the legally allowed speed should not be used when
there are unfavourable road, weather or wind conditions, particularly near accident
black spots.
You must always reduce your speed immedi ately as soon as you detect even just
the slightest swaying of the trailer. On no account attempt to stop the trailer from
“swaying” by accelerating.
Apply the brakes in good time! If the trailer is fitted with a trailer brake, apply the
brakes gently at first and then brake firmly . This will avoid brake jolts resulting from
the trailer wheels locking. Shift down gears in good time before negotiating a down-
hill section to allow the engine to also act as a brake.
Engine overheating
Please keep a check on the coolant temperature gauge if you have to negotiate a
lengthy slope in a low gear at a high engine speed when the outside temperature is
very high ⇒page 18, “Coolant temperature gauge”.
If the needle of the coolant temperature gauge moves into the right-hand area or
even the red area of the scale, reduce yo ur speed immediately. Stop and switch off
the engine if the warning light
 in the instrument cluste r begins flashing. Wait a
few minutes and check the level of coolant in the coolant expansion bottle
⇒ page 229, “Inspecting the coolant level”.
Please refer to the following guidelines ⇒page 37, “Coolant temperature/ Coolant
quantity ”.
The coolant temperature can be reduced by switching on the heating.
Any increase in the cooling effect of the coolant fan through shifting down a gear
and increasing the engine speed is not possible since the fan speed is independent
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Inspecting and replenishing225
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
– Grip with the hand under the radiator grille and lift up the bonnet.
– Take the bonnet support out of its holder and set it in the opening designed for it ⇒page 224, fig. 210 .
Closing the bonnet
– Lift the bonnet slightly and unhook the bonnet support. Press the bonnet support into the hold er designed to hold it.
– Allow the bonnet to drop from a height of about 20 cm into the lock - bonnet do not press down on it !
WARNING
•Never open the bonnet if you see that steam or coolant is flowing out of
the engine compartment - risk of scaldi ng! 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 prop-
erly after closing the bonnet.
•Stop your vehicle immediately while driv ing if you notice that the lock is
not properly engaged and close the bonnet properly - risk of an accident!
Caution
Never open the bonnet using the hand le - danger of causing damage.
Working in the engine 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 stated below and with the general applicable
rules of safety. The engine compart-
ment 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 compartment - risk of scaldi ng! Wait long enough until the steam
or coolant has stopped escaping.
•Switch off the engine and pull out the ignition key.
•Apply the handbrake firmly.
•If your vehicle is fitted with a ma nual gearbox, move the gearshift 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 expa nsion 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.
•Do not let objects, such as e.g cleaning cloth or tools lie in the engine
compartment.
•If you wish to work under the vehicle, you must secure the vehicle from
rolling away and support it with suitable supporting blocks: the car jack is
not sufficient for this - risk of injury!
•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 observe in addition the following:
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Inspecting and replenishing227
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
Engine oil
Check engine oil level
The dipstick indicates the level of oil in the engine.
Checking the oil level
– Park the vehicle on a horizontal surface.
– Switch the engine off.
– Open the bonnet ⇒ in “Working in the engine compartment” on
page 225.
– Wait a few minutes and pull out the oil dipstick.
– Wipe off the dipstick with a clea n cloth and insert it again fully.
– Then withdraw the dipstick ag ain and read off the oil level.
Oil level within range
– You must not top up the oil. Oil level within range
–You
may top up the oil. It is possible that the oil level may then be
within range after doing this.
Oil level within range
–You must top up the oil ⇒page 228. It is sufficient, once this is done,
to keep the oil level within range .
It is normal for the engine to consume oi l. The oil consumption may be as much as
0.5 ltr./1 000 km depending on your style of driving and the conditions under which
you operate your vehicle. The oil consumpt ion may be slightly higher than this
during the first 5 000 kilometres.
One should therefore check the oil level at regular intervals, preferably every time
after the fuel tank is filled or after driving for long stretches.
We recommend maintaining the oil level within the range - but not above this,
if the engine has been operating at hi gh loads, for example during a lengthy
motorway trip during the summer months, towing a trailer or negotiating a high
mountain pass.
The warning light in the instrument cluster* will indicate ⇒page 36, “Engine oil
pressure ” whether the oil level is too low. In this case, check the oil level as soon
as possible. Top up with an appropriate quantity of oil.
Caution
•The oil level must on no account ex tend beyond the range . Danger of
damaging the catalytic converter.
•Do not continue your journey if for some reason it is not possible under the
conditions prev ailing to top up with oil. Switch of the engine and contact and
obtain professional assistance from a specialist garage.
Note
Engine oil specifications ⇒page 269, “Technical Data”.
Fig. 212 Dipstick
AA
AB
AA
AC
AC
AA
AA
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Inspecting and replenishing229
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
also protects the cooling and heating system from corrosion. It also prevents the
formation of scale and significantly increases the boiling point of the coolant.
You must therefore not reduce the concentr
ation of antifreeze agent in the coolant
by adding water, also not during the summ er months or in countries with a warm
climate. The concentration of coolant additive in the coolant must be at least
40%.
You can increase the amount of antifreeze in the coolant if a higher concentration
of antifreeze is necessary for climatic reasons but only up to 60% (antifreeze
protection down to approx. -40°C). The an tifreeze protection tails off above that
concentration.
Vehicles exported to countries with a co ld climate (e.g. Sweden, Norway, Finland)
are already factory-filled with a coolant wh ich offers antifreeze protection down to
about -35°C. In these countries the concentr ation of coolant additive should be at
least 50 %.
Coolant
The cooling system is factory-filled with co olant (purple in colour), which complies
with the specification TL-VW 774 G.
We recommend that you use the same c oolant additive - G12 PLUS-PLUS (purple
in colour) for toppi ng up the system.
Please contact your Škoda Service Partner if you have any questions regarding the
coolant or if you wish to fill up with a different coolant.
Your Škoda Service Partner can also suppl y you with the correct coolant additives.
Caution
•Other coolant additives may cause operational problems which, in partic-
ular, involves significantly redu cing the anticorrosion effect.
•Any faults or problems resulting from corrosion may cause a loss of
coolant and, as a consequence of th is, result in major engine damage.
Inspecting the coolant level
The coolant expansion bottle is located in the engine compartment on
the right.
– Switch the engine off.
– Open the bonnet ⇒page 224.
– Check the level of coolant in the coolant expansion bottle ⇒fig. 213.
The coolant level when the engine is cold must lie between the
(MIN) and (MAX) markings. The level may also rise slightly above
the (MAX) marking when the engine is warm.
If the coolant level in the reservoir is too low, this is indicated by the warning light
in the instrument cluster ⇒page 37, “Coolant temperature/ Coolant quantity ”.
We nevertheless recommend in specting the coolant level directly at the reservoir
from time to time.
Loss of coolant
A loss of coolant is first and foremost an indication of a leak in the system. You
should not merely top up the coolant in the reservoir. It is also important to have
the cooling system inspected without delay by a specialist garage.
Fig. 213 Engine compart-
ment: Coolant expansion
bottle
Ab
Aa
Aa
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Inspecting and replenishing233
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
•Hydrogen is released when you char ge 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 create 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.
•It is prohibited to work with a naked flame and light, to smoke or to carry
out any activities which produce sparks. Avoid creating sparks when
working with cables and electrical device s. Strong sparking represents a risk
of injury.
•Before carrying out any work on the electrical system, switch off the
engine, the ignition as well as all electrical components and disconnect the
negative cable (-) on the battery. If you wish to replace a bulb it is sufficient
to switch off the appropriate light.
•Never charge a frozen or thawed battery - risk of explosion and caustic
burns! Replace a frozen battery.
•Never use a battery which is damaged - risk of explosion! Immediately
replace a damaged battery.
Caution
•You must only disconnect the battery if the ignition is switched off, otherwise
the electrical system (electronic compon ents) of the vehicle may be damaged.
When disconnecting the battery from the electrical system of the vehicle, first
disconnect the negative terminal (-) of the battery. Then disconnect the positive
terminal (+).
•When reconnecting the battery, first conne ct the positive terminal (+) and only
then the negative terminal (-) of the ba ttery. You must on no account connect the
cables wrongly - risk of a cable fire.
•Ensure that battery acid does not come into contact with the vehicle body
otherwise damage could occur to the paintwork.
•Do not place the battery in direct dayl ight in order to protect the battery
housing from the effects of ultra-violet light.
For the sake of the environment
A removed battery is a special type of waste which is harmful to the environment -
contact your specialist garage regarding disposing of the battery.
Note
Please also refer to the guidelines ⇒page 235, also after connecting the battery.
Battery with a charge level indicator, the so-called magic eye
There is a so-called magic eye ⇒fig. 216 located on the top of the battery. The
“magic eye” changes its colour in line with the charge state of and electrolyte level
in the battery.
Air bubbles can influence the colour of th e “magic eye”. For this reason carefully
knock on the “magic eye” before carrying out the check.
•Green colour - the battery is adequately charged.
•Dark colour - the battery has to be charged
•Colourless or yellow colour - have th e battery checked by a Škoda dealer.
Batteries, which are more than 5 years old, must be replaced. We recommend you
have the electrolyte level inspected and adju sted to the correct level or the battery
replaced if necessary by a Škoda Service Partner.
WARNING (continued)
Fig. 216 Battery with a
charge level indicator
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Inspecting and replenishing
234
Caution
If the vehicle has not been driven for more than 3 to 4 weeks, the battery will
discharge because certain electrical comp onents consume electricity (e.g. control
units) also in idle state. You can prevent the discharging of the battery by discon-
necting the negative terminal or charging the battery constantly with a very low
charging current. Please also refer to the notes when working on the battery
⇒ page 232.
Inspecting the electrolyte level
The battery is practically maintenance-free under normal operating conditions.
We do, however, recommend that you have the electrolyte level inspected from
time to time by a Škoda Service Partner when outside temperatures are high or
when driving on long trips. You should also check the electrolyte level ⇒page 234
each time the battery is charged.
The battery acid level will also be chec ked as part of the Inspection Service.
Operation in winter
The battery has to provide greater amounts of electricity during the winter. It also
has only part of the initial power output at low temperatures that it has at normal
temperatures.
A discharged battery may already freez e at temperatures just below 0°C.
We therefore recommend that you have the battery checked by a Škoda dealer
before the start of the winter, and recharged if necessary.
WARNING
Never charge a frozen or thawed battery - risk of explosion and caustic
burns. Replace a frozen battery.
Charging the battery
A properly charged battery is essential for reliably starting the
engine.
– Read the warning notes ⇒ in “Working on the battery” on
page 232 and ⇒.
– Switch the ignition and all electrical components off.
– Only for “quick-charging” : Disconnect both battery cables (first of all
“negative”, then “positive”).
– Carefully attach the terminal clam ps of the charger to the battery
terminals (red = “positive”, black = “negative”).
– You can now plug the mains cable of the charger into the power socket and switch on the charger.
– When charging is completed: switch the charger off and unplug the mains cable from the power socket.
– Only then should you disconnect the terminal clamps of the charger.
– Reconnect the cables to the battery (first of all “positive”, then “nega-
tive”).
It is not normally necessary to disconnect the cables of the battery if you recharge
the battery using low amperages (as for example from a mini-charger). Please also
refer to the instructions from the charger manufacturer.
A charging current of 0.1 of the total battery capacity (or lower) is that which should
be used until full ch arging is achieved.
It is, however, necessary to disconnect both cables before charging the battery with
high amperages, so-called “ quick-charging”.
“Quick-charging” a battery is dangerous ⇒ in “Working on the battery” on
page 232. It requires a special charger and appropriate knowledge. We therefore
recommend that you have yo ur battery quick-charged only by your Škoda Service
Par tner.
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