2009 SKODA OCTAVIA engine coolant

Heating and air conditioning system
115
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
For the sake of the environment
When you economize on fuel, you
also reduce pollutant emissions.
Operational problemsIf 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 258.
•
The cooling system has switched off automatically for a short time because the
coolant temperature of the engine is too hot
⇒page 18.
If you are not able to rectify the operat
ional problem yourself, or if the cooling
capacity decreases, switch the cooling sy
stem off. Contact a specialist garage.
Climatronic* (automatic air conditioning)Description The Climatronic system is a combin
ation of an automatic heating,
fresh air and cooling system which provides optimal comfort for the occupants of the car.The Climatronic maintains fully automatically a convenience temperature. This is achieved by automatically varying the temperature of the outflowing air, the blower stages and the air distribution. The system also takes into account sunlight which eliminates the need to alte
r the settings manually. The
automatic mode

⇒ page 117 ensures maximum wellbeing of th
e occupants at all times of the year.
Description of Climatronic system The cooling operates only if the following conditions are met:•
engine running,
•
outside temperature above approx. +2°C,
•
switched on.
If the cooling system is switched on, th
e temperature and air humidity drops in the
vehicle. The wellbeing of the occupants of
the car is enhanced as a result of this
particularly at high outside temperatur
es and a high air humidity. The system
prevents the windows misting up during the cold season of the year. The heating effect is dependent upon th
e coolant temperature, thus full heat
output only occurs when the engine has reached its operating temperature. It is possible to briefly activate recirc
ulated air mode in order to enhance the
cooling effect
⇒page 118.
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. The AC compressor is switched off at a hi
gh coolant temperature in order to provide
cooling at a high load of the engine. After switching on the cooling
Condensation
from the evaporator of the air condi-
tioning may drip down and form a puddle be
low the vehicle. This is quite normal
and not an indication of a leak! Recommended setting for all periods of the year:•
Set the desired temperature, we recommend 22 °C.
•
Press the button
⇒page 116, fig. 141
.
•
Move the air outlet vents
3 and
4, so that the air flow
is directed slightly
upwards. Aeration of the vehicle when ignition is switched off* On models fitted with power sliding/tilting roof with solar cells, the fresh air blower is automatically switched over
to “solar mode” if the sun ray's are sufficient after
switching off the ignition. The solar cells on
the sliding/tilting roof deliver power for
the fresh air blower. This supplies the interior of the car with fresh air. For an optimum ventilation, the air outlet vents
3 and
4 must be opened
⇒ page 108, fig. 137
.
The ventilation functions only when
the sliding/tilting roof is closed.
AC
AUTO
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Heating and air conditioning system
119
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
WARNING
•
“Stale air” may result in fatigue in the driver and occupants, reduce
attention levels and also cause the windows to mist up. The risk of having an accident increases.•
Do not switch the Climatronic system off for longer than necessary.
•
Switch the Climatronic system on as soon as the windows mist up.
Defrosting windscreenDefrosting windscreen - switching on – Press the button
⇒
page 116, fig. 141
.
Defrosting windscreen - switching off – Once again press the button or the button .The temperature control is controlled automa
tically. More air flows out of the air
outlet vents
1.
Auxiliary heating (auxiliary heating and ventilation)*Description and important information The auxiliary heating (auxiliary heating and ventilation) heats or supplies the interior of the vehicl
e with fresh air independent of the
engine.Auxiliary heating (auxiliary heating) The auxiliary heating (auxiliary heating) f
unctions in connection with the Climatic or
Climatronic. It can be used when stationa
ry, when engine is switched off for preheating of the
vehicle as well as while driving (only during the heating phase of the engine).
The auxiliary heating (auxiliary heating)
warms up the coolant during the combus-
tion of fuel from the vehicle tank. The coolant warms up the air, which (if the blower speed is not set to zero) flows into the occupant compartment. Auxiliary ventilation The auxiliary ventilation enables fresh air to flow into the vehicle interior by switching off the engine, whereby the interior temperature is effectively decreased (e.g. with the vehicle parked in the sun).
WARNING
•
The auxiliary heating must never be operated in closed rooms - risk of
poisoning!•
The auxiliary heating must not be running during refueling - risk of fire.
•
The exhaust pipe of the auxiliary heating is located on the underside of
the vehicle. Therefore do not place the
vehicle, if you wish to operate the
auxiliary heating, in su
ch a way that the exhaust gases of the auxiliary
heating can come easily into contact
with inflammable materials (e.g. dry
grass) or easily inflammable su
bstances (e.g. fuel run out).
Note
•
If the auxiliary heating runs, the fuel
consumption comes from the vehicle tank.
Therefore the auxiliary heating should not be operated, if there is very little fuel in the tank.•
The exhaust pipe of the auxiliary heating,
which is located on the underside of
the vehicle, must not be clogged and
the exhaust flow must not be blocked.
•
If the auxiliary heating and
ventilation is runni
ng, the vehicle battery discharges.
If the auxiliary heating and ventilation
has been operated several times over a
longer period, the vehicle must be driven a few kilometers in order to recharge the vehicle battery.•
The auxiliary heating only switches the bl
ower on, if it has achieved a coolant
temperature of approx. 50 °C.•
At low outside temperatures, this can result in a formation of water vapour in
the area of the engine compartment. This is quite normal and is not an operating problem.


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Heating and air conditioning system
120
•
After switching off the auxiliary heatin
g, the coolant pump runs for a short
period.•
The auxiliary heating and ventilation does not switch on or comes on, if the
vehicle battery indicates a low loading state.•
The auxiliary heating (auxiliary heating) does not switch on, if the following was
shown in the information display or before switching off the ignition:
Please refuel!
(Please refuel!)
.
•
The air inlet in front of the windscreen must be free of ice, snow or leaves in
order to ensure that the auxiliary heating operates properly.•
So that warm air can flow into the vehi
cle interior after switching on the auxil-
iary heating, you must maintain the te
mperature normally selected by you (we
recommend 22°C). It is recommended to
put the air flow in the position
.
•
On vehicles with DPF (diesel particle filter) the warm coolant heats up the
engine.Direct switching on/offThe auxiliary heating (auxiliary heating and ve
ntilation) can be switched on or off at
any time
directly
using the button on the operating part of the Climatic
⇒ fig. 142
or on the operating part of the Climatronic.
If the auxiliary heating and ventilation is not switched off earlier, it switches off automatically after the expiration of the set operating period, in the menu
Running
time
.
Using the system So that the auxiliary heating (auxiliary heating and ventilation) func- tions according to your expectations, it is necessary to carry out the basic setting before
its programming.
Basic setting – On the information display, select from the
Main menu
the menu
point
Aux. heating
.
– In the menu
Aux. heating (auxiliary heating)
⇒
fig. 143
select the
menu point
Weekday
and set the current day.
– Return to a higher level
by selecting the menu point
Back
, i. e. in the
menu
Aux. Heating (auxiliary heating)
.
– In the menu
Aux. Heating
select the menu point
Running time
and
set the desired operating period in steps of 5 minutes. The operating period can be 10 to 60 minutes.
Fig. 142 Button for direct switching on/off of the auxil-iary heating (auxiliary heating and ventilation) on the operating part of the Climatic

Fig. 143 Information display: Aux. heating
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Starting-off and Driving
124
Starting the engineGeneral You can only start the engine only using an original ignition key.•
Place the gearshift lever into neutral (or place the selector lever to the position
P or N in the case of an automatic gearbox)
and put on the handbrake firmly before
starting the engine.•
The clutch pedal should be fully depressed when starting the engine which
means that the starter only has to crank the engine.•
Let go of the key as soon as the engine starts otherwise there may be damage
to the starter. The engine running noises ma
y louder at first be louder for a short time after
starting the cold engine until oil pressure
can be built up in the hydraulic valve
clearance compensation. This is quite no
rmal and is not an operating problem.
If the engine does not start ... You can use the battery of anothe
r vehicle as a jump-start aid
⇒page 252.
It is only possible to tow-start vehicles
fitted with a manual gearbox. The tow-
starting distance must not be more than 50 metres
⇒page 256.
WARNING
•
Never run the engine in non ventilat
ed or enclosed areas. The exhaust
gases of the engine contain besides the odorless and colourless carbon monoxide a poisonous gas - hazard!
Carbon monoxide can cause uncon-
sciousness and death.•
Never leave your vehicle unattended with the engine running.Caution
•
The starter may only be operated (ignition key position ), if the engine is not
running. If the starter is i
mmediately 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 oper
ating temperature - risk of damaging the
engine!•
Vehicles which are fitted with an exhaus
t gas catalytic conver
ter should not be
tow-started over a distance of more than 50 metres.
For the sake of the environment
Never warm up the engine when the vehi
cle is standing. Drive off right away.
Through this the engine reaches its operating temperature more rapidly and the pollutant emissions are lower.Petrol enginesThese engines are fitted with a starter system which selects the correct fuel/air mixture for every external air temperature.•
Do not operate accelerator befo
re 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 258.
•
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 enginesGlow 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 igniti
on has been switched on.
A3
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Starting-off and Driving
125
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
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 th
e 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 awayand 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 258.
•
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 from posi-
tion into
⇒
page 123, fig. 146
.
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 yo
ur journey
after the
engine has been operated for a lengthy peri
od at high loads but should be allowed
it to run at idling speed for about 2 minutes
. This prevents any accumulation of heat
when the engine is switched off.
Note
•
The radiator fan may conti
nue running for a further 10
minutes or
so after the
engine and the ignition have
been switched off. The coolant fan may, however, also
switch on again after some time if the
coolant temperature rises because of an
accumulation of heat in the engine or
if the engine is warm and the engine
compartment is additionally
heated by strong sunlight.
•
This is why particular care is required when carrying out any work in the engine
compartment
⇒page 225, “Working in the engine compartment”.
Shifting (manual gearbox)Shift into reverse only when the vehicle is
stationary. Depress the clutch pedal and
hold it fully depressed. Wait a moment be
fore engaging reverse gear in order to
avoid any shift noises.
A1
Fig. 147 The shift pattern: 5- speed or 6-speed manual gearbox
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Towing a trailer
209
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical 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 63. 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 yo
ur 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 temper
ature 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, particul
arly 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 36, “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 replenishing
225
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
– Pulling on the locking lever
⇒
page 224, fig. 208
will unlock the
bonnet fully.
– 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. 209
.
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 bonne
t properly - risk of an accident!
Caution
Never open the bonnet using the locking lever - 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 cleani
ng 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 suitab
le supporting blocks
; the lifting 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-
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Inspecting and replenishing
226
ribbed belt, alternator, radiator fan) and from the high-voltage ignition system. Please observe in addition the following:
− Never touch the electrical cabl
es of the ignition system.
− Absolutely avoid any jewellery, loose items of clothing or long hair from getting into the rotating parts of the engine - Hazard! Therefore remove any jewellery beforehand, tie up your hair and wear tight fitting clothing.
•
Please also comply with the warnin
g instructions st
ated below when
carrying out any essential work on the fuel system or on the electrical system:
− Always separate the car batter
y from the electrical system.
− Do not smoke. − Never carry out any work close to naked flames. − Always keep a working fire
extinguisher at hand.
Caution
When replenishing fluids in the engine, always ensure that the fluids are on no account mixed up. This may result in ma
jor operating problems and also vehicle
damage!
Overview of the engine compartment The main inspection pointsFig. 210 Petrol engine 1.8 ltr./118 kW TSI
Coolant expansion bottle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Windshield washer fluid reservoir . . . . . . . . . . . . . . . . . . . . . . . . . . . Engine oil filler opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Engine oil dipstick . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Brake fluid reservoir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Battery (below a cover) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Note
The location of the inspection points in
the engine compartment of petrol and
diesel engines is practically identical.
WARNING (continued)
A1
229
A2
236
A3
228
A4
227
A5
231
A6
232
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