2011 SKODA OCTAVIA warning light

Biofuel Ethanol E85
Ethanol E85 Only valid for vehicles with 1.6/75°kW MultiFuel engine.
Biofuel Ethanol E85 consists of 85 % bioethanol and 15 % unleaded petrol com-
plying with the standard (DIN) EN°228.
Biofuel Ethanol E85 in accordance with the standard (DIN) EN 228 can be mixed in
any desired ratio with unleaded petrol.
Drive the vehicle for at least 5 minutes without interruption, if biofuel Ethanol E85
has been refuelled, so that the engine control unit can determine the share of the
biofuel in the fuel. During this period do not drive at top speed of your vehicle or
high engine speeds and not at full throttle. During this process decrease the idling
speed. WARNING
Pay attention to any legal requirements if you do carry a spare canister in the
vehicle. We do not recommend carrying any fuel canisters in your vehicle for
safety reasons. The canister can be damaged in the event of an accident and
fuel may leak out. CAUTION
● Even inadvertently filling the fuel tank with another biofuel such as Ethanol
°E85 can result in damage to the fuel system.
● If you park your vehicle for a lengthy period, fill with petrol complying with
(DIN) EN°228, because Ethanol E85 can contain low quantities of impurities, which
can lead to corrosion. For the sake of the environment
If you use Ethanol E85, the CO 2 emission of your vehicle is lowered up to 5 %. Note
● When operating with Ethanol E85, the fuel consumption increases by approx
33 %, as a lower quantity of energy is contained in the bioethanol than in unlea-
ded petrol.
● Biofuel Ethanol E85 contains only a low quantity of additives in contrast to un-
leaded petrol. Therefore we recommend to fill up the tank with unleaded petrol
complying with EN 228 every 15 000 km (e.g. before the oil change) and run it
empty, so that the engine remains clean. Make sure not to use the whole content
of the tank ⇒ page 178, Refuelling
.
● The interval of 15 000 km applies for the oil change. 
Operation in winter Fig. 146 MultiFuel - power socket
If you use biofuel Ethanol E85 at very low temperatures, it is necessary to preheat
the engine before an engine start.
The power socket for the engine preheating is located in the front bumper next to
the fog light ⇒

 fig. 146 . The outside temperature Duration of engine preheating
lower than -10
℃ We recommend up to 1 hour
lower than -15
℃ at least 1 hours.
lower than -25
℃ at least 2 hours.
If an engine preheating is not possible at outside temperatures lower than -10 °C,
the share of unleaded petrol complying with EN 228 must be as high as possible.
Thus the cold start property of the engine is clearly improved.
If there is biofuel Ethanol E85 in the tank and the engine is not preheated, it can
lead at temperatures below -15 °C to very poor or no starting of the engine. £ 177
Fuel Using the system Safety Driving Tips General Maintenance Breakdown assistance Technical data

Inspecting and Replenishing
Engine compartment
Bonnet remote release Fig. 148 Bonnet release lever
Bonnet remote release
– Pull the unlocking lever below the dash panel on the driver's side ⇒  fig. 148 .
The bonnet jumps out of its lock as a result of the spring force. A locking lever ap-
pears at the same time in the radiator grille. 
Opening and closing the bonnet. Fig. 149 Radiator grille: Locking lever/securing the bonnet with the bonnet support
Opening the bonnet
–
Unlock the bonnet ⇒
 fig. 148 . –
Ensure that the arms of the windscreen wipers are correctly in place against
the windscreen before opening the bonnet otherwise damage could occur to
the paintwork.
– Pulling on the locking lever in direction of arrow 1 ⇒
 fig. 149
will unlock the
bonnet.
– 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 2 de-
signed for it.
Closing the bonnet
– Lift the bonnet slightly and unhook the bonnet support. Press the bonnet sup-
port into the holder 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!
– Check whether the bonnet is properly closed. WARNING
● Never open the bonnet if you see that steam or coolant is flowing out of
the engine compartment - 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 driv-
ing. One should therefore check that the lock has in fact engaged properly af-
ter closing the bonnet.
● Stop your vehicle immediately while driving 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 locking lever - danger of causing damage. 180
Inspecting and Replenishing

It is normal for the engine to consume oil. The oil consumption may be as much as
0.5 l/1 000 km depending on your style of driving and the conditions under which
you operate your vehicle. The oil consumption 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 A - but not above this
,
if the engine has been operating at high loads, for example during a lengthy mo-
torway trip during the summer months, towing a trailer or negotiating a high
mountain pass.
The warning light in the instrument cluster will indicate whether the oil level is
too low ⇒ page 25, Engine oil pressure . 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 extend beyond the range A . Danger of dam-
aging the catalytic converter.
● Do not continue your journey if for some reason it is not possible under the
conditions prevailing to top up with oil. Switch the engine off and obtain profes-
sional assistance from a specialist garage, otherwise it could lead to severe en-
gine damage. Note
Engine oil specifications ⇒  page 221, Technical data. 
Replenishing engine oil –
Inspecting the engine oil level ⇒
 page 182.
– Unscrew the cap of the engine oil filler opening.
– Pour in a suitable grade of oil in portions of 0.5 litres ⇒ page 224, Engine oil
specifications.
– Inspect the oil level ⇒ page 182
.
– Carefully screw on the cap of the filler opening and push the dipstick in fully. WARNING
● Avoid dripping oil onto hot parts of the engine when topping up will oil - a
risk of fire!
● Read and observe the warning notes ⇒
 page 181, Working in the engine
compartment before working in the engine compartment. For the sake of the environment
The oil level must on no account extend beyond the range A ⇒
 
page 182. Oil will
otherwise be drawn in through the crankcase ventilation and may pass through
the exhaust system to atmosphere. The oil may combust in the catalytic converter
and damage it. 
Changing engine oil The engine oil must be changed at the intervals stated in the Service schedule or
according to the service interval indicator
⇒ page 12, Service reminder indicator

. WARNING
● Only carry out the engine oil change, if you have the required professional
knowledge!
● Read and observe the warning notes ⇒
 page 181, Working in the engine
compartment before working in the engine compartment.
● First of all, let the engine cool down, wear an eye protection and gloves -
risk of caustic burns due to hot oil. CAUTION
You must not pour any additives into the engine oil - risk of engine damage! Dam-
age, which results from such product, are excluded from the warranty. For the sake of the environment
● You must on no account pour oil into the ground or into the sewage system.
● In view of the problems involved in properly disposing of old oil, the necessary
special tools and the knowledge required for such work, we recommend that you
have the oil and oil filter change carried out by an authorised

ŠKODA Service Part-
ner. £ 183
Inspecting and Replenishing Using the system Safety Driving Tips General Maintenance Breakdown assistance Technical data

Inspecting the coolant level
Fig. 152 Engine compartment: Coolant
expansion bottle
The coolant expansion bottle is located in the engine compartment on the right.
– Switch the engine off.
– Open the bonnet ⇒ page 180 .
– Check the level of coolant in the coolant expansion bottle ⇒ fig. 152 . The cool-
ant level when the engine is cold must lie between the b (MIN) and
a (MAX)
markings. The level may also rise slightly above the a (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 25, Coolant temperature/ Coolant quantity 
. We
still recommend inspecting 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.
Losses can only occur through the pressure relief in the cap of the coolant expan-
sion bottle which is completely free of leaks if the coolant boils as a result of over-
heating and is forced out of the cooling system. WARNING
Read and observe the warning notes ⇒ page 181, Working in the engine com-
partment
before working in the engine compartment. CAUTION
One should contact a specialist garage as soon as possible if the source of over-
heating itself cannot be determined and removed, since there may be grave dam-
age to the engine. 
Replenishing the coolant –
Switch the engine off.
– Allow the engine to cool down.
– Place a cloth over the cap of the coolant expansion reservoir ⇒
 fig. 152 and un-
screw the cap carefully by turning it to the left ⇒  .
– Top up the coolant.
– Screw the cap tight until it is heard to lock.
The coolant which you use for replenishing the system, must comply with one
specific specification ⇒ page 184

. Do not use an alternative additive if the speci-
fied coolant additive is not available in exceptional cases. Just top up the system
with water and as soon as possible arrange adjustment to correct the mixing ratio
of water and coolant additive again by a specialist garage.
Only use fresh coolant for topping up the system.
Do not fill the coolant above the mark a (max.)
⇒ fig. 152 ! Excess coolant heats up
and then is forced out of the cooling system through the pressure relief valve in
the cap.
Wait until the engine has cooled down for a system which has suffered a major
loss of coolant before pouring in coolant. This is necessary to avoid engine dam-
age. WARNING
● The cooling system is pressurized! Do not open the cap of the coolant ex-
pansion bottle if the engine is still hot - risk of scalding!
● 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! £ 185
Inspecting and Replenishing Using the system Safety Driving Tips General Maintenance Breakdown assistance Technical data

WARNING (Continued)
● If any splashes of coolant get into your eyes, rinse out your eyes immedi-
ately 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. CAUTION
Do not continue your journey if for some reason it is not possible under the condi-
tions prevailing to top up with coolant. Switch the engine off and obtain profes-
sional assistance from a specialist garage, otherwise it could lead to severe en-
gine damage. 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 regula-
tions. 
Radiator fan The radiator fan may switch on suddenly.
The radiator fan is driven by an electric motor and controlled according to the
coolant temperature.
The radiator fan may continue running for up to 10 minutes after the engine has
been switched off - 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. WARNING
You must therefore be aware when working in the engine compartment that
the fan may switch on suddenly - risk of injury! Brake fluid
Inspecting the brake fluid level Fig. 153 Engine compartment: Brake flu-
id reservoir
The brake fluid reservoir is located on the left of the engine compartment. The
brake fluid reservoir on right-hand steering models is positioned on the other side
of the engine compartment.
– Switch the engine off.
– Open the bonnet ⇒ page 180 .
– Inspect the brake fluid level in the reservoir ⇒
 fig. 153 . The level must be be-
tween the “MIN” and “MAX” markings.
A slight drop in the fluid level results when driving due to normal wear-and-tear
and automatic adjustment of the brake pads, and is perfectly normal.
There may be an indication of a leak in the brake system, however, if the fluid lev-
el drops significantly within a short time or if it drops below the “MIN” marking. If
the brake fluid level is too low, this is indicated by the warning light lighting up in
the instrument cluster ⇒ page 28, Brake system . In this case stop immediately
and do not drive any further! Obtain professional assistance. WARNING
● Read and observe the warning notes ⇒
 page 181, Working in the engine
compartment before working in the engine compartment.
● If the fluid level has dropped below the MIN marking, do not drive any fur-
ther - risk of accident! Contact a Škoda dealer to obtain professional assis-
tance. 186
Inspecting and Replenishing

Replacing brake fluid
Brake fluid absorbs moisture. This causes the fluid to absorb moisture from the
surrounding air over a period of time. Excessive water in the brake fluid may be
the cause of corrosion in the brake system. The water content also lowers the
boiling point of the brake fluid.
Only new genuine brake fluid from
ŠKODA may be used.
The brake fluid must comply with one of the following standards or specifications:
● VW 50114
● FMVSS 116 DOT4
● DIN ISO 4925 CLASS 4
We recommend that you have the brake fluid replaced by an authorised ŠKODA
Service Partner as part of an Inspection Service. WARNING
Using old brake fluid can result in severe stress on the brakes because of the
formation of vapour bubbles in the brake system. This greatly impairs the
braking efficiency and thus also the safety of your vehicle. CAUTION
Brake fluid damages the paintwork of the vehicle. For the sake of the environment
Due to issues with disposal, the special tools and knowledge required, we recom-
mend you have the brake fluid replaced by an authorised ŠKODA Service Partner.
Battery General information Improper handling of the vehicle battery can cause damage. We therefore recom-
mend you have work on the vehicle battery carried out by an authorised
ŠKODA
service partner. There is a risk of injuries, scalding, accidents and burns when carrying out any
work on the battery and on the electrical system. For this reason, it is essential to
comply with the warning instructions ⇒  stated below and with the general ap-
plicable rules of safety. 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 in-
to contact with water are diluted accompanied 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 immediately with clear water for several minutes. Con-
tact 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. If acid was
swallowed, seek immediate medical attention.
● 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 dur-
ing 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, explo-
sion 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 devices. Strong sparking represents a risk of injury.
● Before carrying out any work on the electrical system, switch off the en-
gine, the ignition as well as all electrical components and disconnect the neg-
ative cable (-) on the battery. If you wish to replace a bulb it is sufficient to
switch off the appropriate light. £ 187
Inspecting and Replenishing Using the system Safety Driving Tips General Maintenance Breakdown assistance Technical data

WARNING (Continued)
● Never charge a frozen or thawed battery - risk of explosion and caustic
burns! Replace a frozen battery.
● Never jump-start the batteries which have a too low electrolyte level - risk
of explosion and caustic burns!
● Never use a battery which is damaged - risk of explosion! Immediately re-
place a damaged battery. CAUTION
● You must only disconnect the battery if the ignition is switched off, otherwise
the electrical system (electronic components) of the vehicle may be damaged.
When disconnecting the battery from the electrical system of the vehicle, first dis-
connect the negative terminal (-) of the battery. Then disconnect the positive ter-
minal (+).
● When reconnecting the battery, first connect the positive terminal (+) and only
then the negative terminal (-) of the battery. 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 oth-
erwise damage could occur to the paintwork.
● Do not place the battery in direct daylight in order to protect the battery hous-
ing from the effects of ultra-violet light.
● If the vehicle has not been driven for more than 3 to 4 weeks, the battery will
discharge This is because certain electrical components consume electricity (e. g.
control units) also in idle state. You can prevent the discharging of the battery by
disconnecting the negative terminal or charging the battery constantly with a very
low charging current. 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 190
, also after connecting the bat-
tery.
● You should replace batteries older than 5 years. Battery cover
Fig. 154 Engine compartment: Polyester cover of the vehicle battery/plastic cover of the ve-
hicle battery
The battery is located in the engine compartment in a polyester cover
⇒ fig. 154 -
left or in a polyester cover ⇒

 fig. 154 - right.
– Open the battery cover in direction of arrow 1
⇒
 fig. 154 or press the interlock
2 on the side of the battery cover, fold the cover up and remove the battery.
– The installation of the battery cover takes place in the reverse order.
The edge of the polyester battery cover ⇒

 fig. 154 - left is inserted between the
battery and the side wall of the battery cover when working on the battery. 
Battery control Fig. 155 The battery: Electrolyte level
indicator
The battery is practically maintenance-free under normal operating conditions. £188
Inspecting and Replenishing

We recommend you have the electrolyte level checked by a specialist garage from
time to time, especially in the following cases.
● High outside temperatures.
● Long daily drives
● After each charge ⇒  page 189.
On vehicles with a vehicle battery fitted with a colour indicator, the so-called mag-
ic eye ⇒ fig. 155 , the electrolyte level can be determined by looking at the change
in colour.
Air bubbles can influence the colour of the indicator. For this reason carefully
knock on the indicator before carrying out the check.
● Black colour - electrolyte level is correct.
● Colourless or light yellow colour - electrolyte level too low, the battery must be
replaced. Note
● The battery electrolyte level is periodically checked by an authorised
ŠKODA
Service Partner as part of the Inspection Service.
● For technical reasons, on vehicles with the description “AGM”, the electrolyte
level cannot be checked.
● Vehicles with a “START-STOP” system are fitted with a battery control unit for
checking the energy level for the recurring engine start. 
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 freeze at temperatures just below 0 °C.
We therefore recommend that you have the battery checked by a specialist ga-
rage before the start of 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 en-
gine.
– Read the warning notes ⇒
  in General information on page 187 and ⇒
  .
– Switch the ignition and all electrical components off.
– Only for “quick-charging”: Disconnect both battery cables (first of all “nega-
tive
”, then “positive”).
– Carefully attach the terminal clamps 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 ca-
ble 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 “negative”).
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 al-
so 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 charging 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 General information on page 187.
It requires a special charger and specialist knowledge. We recommend having the
quick charging of vehicle batteries undertaken by a specialist garage.
A discharged battery may already freeze at temperatures just below 0

°C ⇒  . We
recommend that you no longer use a battery which has thawed out because the
casing of the battery may be cracked through the formation of ice and this would
allow battery electrolyte to flow out.
The vent plugs of the battery should not be opened for charging. £ 189
Inspecting and Replenishing Using the system Safety Driving Tips General Maintenance Breakdown assistance Technical data