2011 SKODA OCTAVIA check engine light

Heating and air conditioning system
Introduction
Description and information The heating effect is dependent upon the coolant temperature, thus full heat out-
put only occurs when the engine has reached its operating temperature.
If the cooling system is switched on, the temperature and air humidity drops in
the vehicle. The well-being of the occupants of the car is enhanced as a result of
this particularly at high outside temperatures and a high air humidity. The system
prevents the windows misting up during the cold season of the year.
It is possible to briefly activate recirculated air mode in order to enhance the cool-
ing effect - air-conditioning system ⇒ page 90
, Climatronic ⇒ page 93.
The air inlet in front of the windscreen must be free of ice, snow or leaves in order
to ensure that the heating and cooling systems operate properly.
After switching on the cooling Condensation from the evaporator of the air condi-
tioning may drip down and form a puddle below the vehicle. This is quite normal
and not an indication of a leak! WARNING
● For your own safety and that of other road users, ensure that all the win-
dows are free of ice, snow and misting. Please familiarize yourself about how
to correctly operate the heating and ventilation systems, how to demist and
defrost the windows, as well as with the cooling mode.
● You should not leave recirculated air mode on over a longer period of time,
as

“stale” air may result in fatigue in the driver and occupants, divert your at-
tention and also cause the windows to mist up. The risk of having an accident
increases. Switch recirculated air mode off as soon as the windows begin
misting up. Note
● The used air streams out through the air removal openings in the luggage
compartment.
● We recommend that you do not smoke in the vehicle when the recirculating air
mode is operating since the smoke which is drawn at the evaporator from the in-
terior of the vehicle forms deposits in the evaporator of the air conditioning sys- tem. This produces a permanent odour when the air conditioning system is oper-
ating which can only be eliminated through considerable effort and expense (re-
placement of compressor).
● Please refer to the information regarding the recirculated air mode for heating
⇒

  page 88 and/or for air-conditioning system ⇒ page 90 or Climatronic
⇒  page 93.
● To ensure the heating system, air conditioning system or Climatronic work per-
fectly, the air outlet vents must not be covered by any objects. 
Using the air conditioning system economically The compressor on the air conditioning system uses power from the engine when
in cooling mode which will effect the fuel consumption.
It recommended to open the windows or the doors of a vehicle for which the inte-
rior has been strongly heated through the effect of direct sunlight in order to al-
low the heated air to escape.
The cooling system should not be switched on while travelling when the window
is open.
The desired interior temperature can also be achieved without switching in the
cooling system just by switching to fresh air mode. For the sake of the environment
When you economize on fuel, you also reduce pollutant emissions. 
Operational problems If the cooling system does not operate at outside temperatures higher than +5 °C,
there is a problem in the system. The reasons for this may be:
●
The fuse on the air conditioning system has blown. Check the fuse, replace it if
necessary ⇒ page 211.
● The cooling system has switched off automatically for a short time because
the coolant temperature of the engine is too hot ⇒ page 11.
If you are not able to rectify the operational problem yourself, or if the cooling ca-
pacity decreases, switch the cooling system off. Contact a specialist garage.  85
Heating and air conditioning system Using the system Safety Driving Tips General Maintenance Breakdown assistance Technical data

CAUTION
● The starter may only be operated (ignition key position 3 ), if the engine is not
running. If the starter is immediately operated after switching off the engine, the
starter or the engine can be damaged.
● Avoid high engine revolutions, full throttle and high engine loads as long as
the engine has not yet reached its normal operating temperature - risk of damag-
ing the engine!
● Do not tow start the engine - danger of damaging the engine. On vehicles with
a catalytic converter, unburnt fuel may get into the catalytic converter where it
may ignite. This in turn may damage or destroy the catalytic converter. You can
use the battery of another vehicle as a jump-start aid ⇒ page 206
, Jump-starting.For the sake of the environment
Never warm up the engine when the vehicle is standing. Drive off right away.
Through this the engine reaches its operating temperature more rapidly and the
pollutant emissions are lower. 
Petrol engines These engines are fitted with a starter system which selects the correct fuel-air
mixture for every external air temperature.
●
Do not operate accelerator before and when starting engine.
● Interrupt the attempt at starting after 10 seconds if the engine does not start
right awayand wait for about 30 seconds before repeating the attempt.
● It is possible that the fuse on the electrical fuel pump is defect if the engine
still does not start. Check the fuse and replace it if necessary ⇒ page 211.
● Contact the nearest specialist garage to obtain professional assistance.
It may be necessary, if the engine is very hot, to slightly depress the accelerator
after the engine has started. 
Diesel engines Glow plug system
Diesel engines are equipped with a glow plug system, the preglow period being
controlled automatically in line with the coolant temperature and outside temper-
ature.
The preglow indicator light  comes on after the ignition has been switched on. You should not switch on any major electrical components during the heating
period otherwise the vehicle battery will be drained unnecessarily.
● You should start the engine immediately after the glow plug warning light 
has gone out.
● The glow plug warning light will come on for about one second if the engine is
at a normal operating temperature or if the outside temperature is above +5 °C.
This means that you can start the engine right away.
● Interrupt the attempt at starting after 10 seconds if the engine does not start
right away and wait for about 30 seconds before repeating the attempt.
● It is possible that the fuse on the diesel preglow system is defect if the engine
still does not start. Check the fuse and replace it if necessary ⇒ page 211.
● Contact the nearest specialist garage to obtain professional assistance.
Starting the engine after the fuel tank has run dry
It may take longer than normal to start the engine after refuelling if the fuel tank
has run completely dry - up to one minute. This is because the fuel system must
first of all be filled while the attempting to start the engine. 
Switching off the engine –
The engine can be switched off by turning the ignition key into position 1 ⇒ 
fig. 99 . WARNING
● Never switch off the engine before the vehicle is stationary - risk of acci-
dent!
● The brake booster only operates when the engine is running. Greater
physical effort for braking is required when engine is switched off. Because if
you do not stop as normal, this can cause an accident and severe injuries. CAUTION
you should not switch the engine off right away at the end of your journey after
the engine has been operated for a lengthy period at high loads but should be al-
lowed it to run at idling speed for about 2

minutes. This prevents any accumula-
tion of heat when the engine is switched off. £100
Starting-off and Driving

The function is automatically activated each time the ignition is switched on.
In the start-stop mode, the engine automatically switches to the vehicle's idle
phase, e.g. when stopped at traffic lights.
Information regarding the current state of the
“START-STOP” system is indicated
in the display of the instrument cluster.
Automatic engine shut down (stop phase)
– Stop the vehicle (where necessary, apply the handbrake).
– Take the vehicle out of gear.
– Take your foot off the clutch.
Automatic engine restart (start phase).
– Push down on the clutch.
Switching the
“START-STOP” system on and off
You can switch the “START STOP” system on/off by pressing the button ⇒ fig. 105.
When start-stop mode is deactivated, the warning light in the button lights up.
If the vehicle is in the stop phase when manually switching off the system, the en-
gine starts immediately.
The “START-STOP” system is very complex. Some of the procedures are hard to
check without servicing. The general conditions for the proper functioning of the
“START-STOP” system are listed in the following overview.
Conditions for the automatic engine shut down (stop phase) The gearshift lever is in Neutral.
The clutch pedal is not pressed!
The driver has fastened the seat belt.
The driver's door is closed.
The bonnet is closed.
The vehicle is at a standstill.
The factory-fitted towing device is not electrically connected to a trailer.
The engine is at operating temperature.
The charge state of the vehicle battery is sufficient.
The stationary vehicle is not on a steep slope or a steep downhill section.
The engine speed is less than 1200 1/min. The temperature of the vehicle battery is not too low or too high.
The pressure in the brake system is sufficient.
The difference between the outdoor- and the set temperature in the interior is
not too great.
The vehicle speed since the last time the engine was switched off was greater
than 3 km/h.
No cleaning of the diesel particle filter takes place
⇒ page 23 The front wheels are not turned excessively (the steering angle is less than 3/4
of a steering wheel revolution). Conditions for an automatic restart (start phase)
The clutch is pressed.
The max./min. temperature is set.
The Defrost function for the windscreen is switched on.
A high blower stage has been selected.
The “START STOP” button is pressed.
Conditions for an automatic restart without driver intervention
The vehicle moves at a speed of more than 3 km/h.
The difference between the outdoor- and the set temperature in the interior is
too great.
The charge state of the vehicle battery is not sufficient.
The pressure in the brake system is not sufficient.
Messages in the instrument cluster display (valid for vehicles without
Information display) ERROR: START STOP
Error in the START-STOP system
START STOP NOT POSSIBLE Automatic engine shut down is not
possible
START STOP ACTIVE Automatic engine shut down (stop
phase)
SWITCH OFF IGNITION
Switch off the ignition
START MANUALLY
Start the engine manually
£106
Starting-off and Driving

●
Inflate all tyres to the specified inflation pressure ⇒  page 192.
● Switch on the ignition.
● Press button 
 ⇒ fig. 140
for more than 2
seconds. While pressing the but-
ton, the warning light  lights up. At the same time the memory of the system is
erased and the new calibration is started, which is confirmed with an audible sig-
nal and then the warning light  goes out.
● If the warning light  does not go out after the basic setting, there is a fault in
the system. Have the vehicle inspected by your nearest specialist garage.
Warning light  lights up
If the tyre inflation pressure of at least one wheel is insufficiently inflated in com-
parison to the stored basic value, the warning light  ⇒  lights up.
Warning light  flashes
If the warning light flashes, there is a system fault. Have the vehicle inspected by
your nearest specialist garage. WARNING
● When the warning light  lights up, immediately reduce the speed and
avoid sudden steering and brake manoeuvres. Please stop the vehicle without
delay at the nearest possible stop and inspect the tyres and their inflation
pressures.
● The driver is responsible for the correct tyre inflation pressures. For this
reason, the tyre inflation pressures must be checked regularly.
● Under certain circumstances (e.g. sporty style of driving, wintry or unpaved
roads) the warning light  can be delayed or does not light up at all.
● The tyre pressure monitoring system does not take away the responsibility
from the driver for the correct tyre inflation pressure. Note
The tyre pressure monitoring system:
● does not replace the regular tyre inflation pressure control, because the sys-
tem cannot detect an even pressure loss,
● cannot warn in case of very rapid tyre inflation pressure loss, e.g. in case of
sudden tyre damage. In this case carefully bring the vehicle to a standstill without
sudden steering movements and without sharp braking.
● In order to ensure a proper functioning of the tyre inflation pressure-control
system, it is necessary to carry out the basic setting again every 10 000 km or 1x a
year. Diesel particle filter (diesel engine) In the diesel particle filter the resulting soot particles are collected
and burnt during the combustion of diesel fuel. Fig. 141 Vehicle data sticker
Code 7GG , 7MB or 7MG on the vehicle data sticker, see ⇒ fig. 141 , indicates that
your vehicle is equipped with a diesel particle filter. The vehicle data sticker is lo-
cated on the floor of the luggage compartment and is also stated in the Service
schedule.
The diesel particle filter filters the soot particles completely from the exhaust. The
soot is collected in the diesel particle filter and burnt regularly. To assist this pro-
cedure, we recommend not to drive regularly over short distances.
If the diesel particle filter is full or there is a fault, it is indicated by the warning
light 
. WARNING
● The diesel particle filter achieves very high temperatures. Therefore do not
park at points where the hot filter comes into direct contact with dry grass or
other combustible materials - risk of fire!
● Never use additional underbody protection or corrosion-protection agents
for the exhaust pipes, catalytic converters, diesel particle filter or heat shields.
When the engine reaches its operating temperature, these substances might
ignite - risk of fire. Note
When using diesel fuel with high sulphur content the life of the diesel particle fil-
ter is clearly reduced. A specialist garage will be able to tell you which countries
use only diesel fuel with high sulphur content. 160
Intelligent Technology

Towing a trailer
Technical requirements Your vehicle is designed primarily for transporting persons and luggage. It can,
however, also be used for towing a trailer - provided certain technical equipment
is fitted.
If your vehicle has been
factory-fitted with a towing device or has a towing device
from ŠKODA Original Accessories, then the towing device satisfies all technical
and legal requirements.
Your vehicle is fitted with a 13-pin power socket for the electrical connection be-
tween the vehicle and trailer. If the trailer which you wish to tow has a 7-pin con-
nector, you can use a suitable adapter from
ŠKODA Original Accessories.
This work must be carried out in accordance with the manufacturer's specifica-
tions if a towing device is retrofitted.
Authorised ŠKODA Service Partners can provide detailed information about retro-
fitting a towing device and for any necessary modifications to the cooling system. WARNING
We recommend that you have the towing device from ŠKODA Original Acces-
sories installed by an authorised
ŠKODA Service Partner. He is familiar with all
the relevant details relating to retrofitting such equipment. There is a risk of
an accident if the towing device is not properly fitted! 
General Maintenance Trailer load
The permissible trailer load must on no account be exceeded.
You can negotiate appropriately steeper inclines and descents if you do not make
full use of the permissible trailer load.
The trailer loads specified only apply for
altitudes up to 1000 metres above mean
sea level. The fact that the engine power output drops with increasing height due
to a lowering of air pressure and thus the ability to climb, means that the towed
weight must be reduced by 10 % for every further increase of 1 000 metres in height above sea level. The towed weight is the weight of the (laden) vehicle and
the (laden) trailer together. One should take this into account before driving up to
higher altitudes.
The trailer and drawbar load information on the type plate of the towing device
are merely test data for the towing device The data relating to your vehicle,
which is often less than this test data, can be found in your vehicle registration
documents.
Distribution of the load
Distribute the load in the trailer in such a way that any heavy items are located as
close as possible to the axle. Secure the items to prevent them slipping.
Tyre pressure
Correct the tyre inflation pressure on your vehicle for that of

“fully laden”
⇒  page 192. The inflation pressure of the tyres fitted to the trailer adjust in ac-
cordance with the manufacturer's recommendation.
Exterior mirrors
You have to have additional exterior mirrors fitted if you are not able to see the
traffic behind the trailer with the standard rear-view mirrors. Both exterior mirrors
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 the aid of the headlight beam adjuster
⇒  page 49.
Detachable ball head
The ball head is detachable on vehicles with towing device and can be obtained
from ŠKODA Original Accessories. It is stowed together with separate fitting in-
structions in the spare wheel well in the luggage compartment of the vehicle. Note
● We recommend that you also have your vehicle inspected between service in-
tervals if you tow a trailer frequently.
● The handbrake on the towing vehicle must be put on when coupling and de-
coupling the trailer. 168
Towing a trailer

Driving Tips
–
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 temperature 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 acci-
dent black spots.
You must always reduce your speed immediately 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 downhill 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 11, 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 your speed immediately. Stop and switch
off the engine if the warning light  in the instrument cluster begins flashing.
Wait a few minutes and check the level of coolant in the coolant expansion bottle
⇒  page 185, Inspecting the coolant level. Please refer to the following guidelines
⇒ page 25, 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 independ-
ent of the engine speed. One should also not drop a gear for this reason when
towing a trailer as long as the engine can manage the slope without any drop in
speed.  169
Towing a trailer 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