Time SKODA OCTAVIA 2008 2.G / (1Z) Service Manual

Heating and air conditioning system
114
Recirculated air mode
In recirculated air mode air is sucked out of the interior of the vehicle
and then fed back into the interior.
Recirculated air mode prevents polluted air outside the vehicle from
getting into the vehicle, for example when driving through a tunnel or
when standing in a traffic jam.
Switching recirculated air mode on
– Press the button ⇒page 112, fig. 139 the warning light lights
up in the button.
Switching recirculated air mode off
– Press again the button - the warning light in the button goes out.
The recirculated air mode is switched off au tomatically if the air distribution control
is in position  ⇒ page 112, fig. 139 . You can also switch recirculated air mode
on again from this setting by repeatedly pressing button .
WARNING
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
attention and also cause the windows to mist up. The risk of having an acci-
dent increases. Switch recirculated air mode off as soon as the windows
begin misting up.
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 allow
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.
comfortable heatingdesired tempera-
ture2 or 3 or switched offdo not switch onopen
the fastest coolingrecommended
22°Cbriefly 4, then 2or 3switched onbriefly switched onopen
optimal coolingdesired tempera- ture1, 2 or 3switched ondo not switch onopen and align to the roof
Fresh air mode - ventilation up to the stop
towards the leftdesired positionswitched offdo not switch onopen
Set-upSetting of the control dialButtonAir outlet vents 3AAABACA1A4
A4

AC
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Heating and air conditioning system115
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
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 257.
•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 combination 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 below 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. 140 .
•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 sollar 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. 136.
The ventilation functions only when the sliding/tilting roof is closed.
AC
AUTO
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WARNING
•For your own safety and that of other road users, ensure that all the
windows are free of ice, snow and mistin g. Please familiarize yourself about
how to correctly operate th e 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 attention 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
•If the cooling system has not been switched on for a lengthy period, odours may
be produced at the evaporator because of deposits. Switch the cooling system on
at least once a month for approximately 5 mi nutes at the highest blower stage - also
during the cold season of the year - in order to remove such odours. Also open a
window for a short time.
•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 inte-
rior of the vehicle forms deposits in the evaporator of the air conditioning system.
This produces a permanent odour when the air conditioning system is operating
which can only be eliminated through co nsiderable effort and expense (replace-
ment of compressor).
•The used air streams out through the air removal openings in the luggage
compartment.
•On vehicles equipped with a factory-fitted radio* or navigation*, the informa-
tion of the Climatronic is also shown on the display. You can switch off this function
for the Radio* - see operating instructions for radio. This function cannot be
switched off during Navigation*.
•Using the cooling economically ⇒page 114.
•Operational problems ⇒page 115.
Overview of the control elements
The controls enable a separate setting of the temperature for the left
and right side.
Fig. 140 Climatronic: Control elements
The buttons
Defrost windscreen intensively
Air flow to the windows
Air flow to head
Air flow in the footwell
Recirculated air mode , recirculated air mode with air quality sensor*
Rear window heater
Buttons / control dial Setting of the temperature for the left side, operation of the seat heating of the
left front seat*
Automatic mode
Switching off Climatronic
Setting the blower speed
A1
A2
A3
A4
A5
A6
A7
A8AUTO
A9OFF
A10
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Heating and air conditioning system
118
the numerical scale. In both limit positions the Climatronic operates at maximum
cooling or heating capacity, respectively. The temperature is not controlled in this
case.
Lengthy and uneven distribution of the air flow out of the vents (in particular at the
leg area) and large differences in temperature, for example when getting out of the
vehicle, can result in chills in sensitive persons.
Recirculated air mode
In recirculated air mode air is sucked out of the interior of the vehicle
and then fed back into the interior.
Recirculated air mode prevents polluted air outside the vehicle from
getting into the vehicle, for example when driving through a tunnel or
when standing in a traffic jam.
Switching recirculated air mode on
– Press the button - the warning light lights up in the button.
Switching recirculated air mode off
– Press again the button or the button - the warning light in
the button goes out.
WARNING
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
attention and also cause the windows to mist up. The risk of having an acci-
dent increases. Switch recirculated air mode off as soon as the windows
begin misting up.
Note
If the windscreen mists up, press the button ⇒page 116, fig. 140 . After
the windscreen has been demisted, press the button .
Automatic air distribution control
When the automatic air distribution control is switched on, an air
quality sensor measures the concentration of pollutants in the drawn
in air.
If a considerable increase in concentr ation of pollutants is recognized by
the air quality sensor, the air distribution control will temporarily be
switched off. If the concentration of pollutants decreases to the normal
level, the air distribution control is au tomatically switched off so that fresh
air can be guided into the vehicle interior.
Switch on automatic air distribution control
– Press the button repeatedly * until the warning light on the right side of the button lights up.
Switch off automatic air distribution control temporarily
– If the air quality sensor does not switch on automatically when there
is a nauseating smell, you can switch it on yourself by pressing the
button *. The warning light lights up in the button on the left side.
Switch on automatic air distribution control again
– Hold the button pressed * for more than 2 seconds and on the right side of the button the warning light lights up.
Switch off automatic air distribution control
– Press again the button * until the warning lights in the button go out.
WARNING
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
attention and also cause the windows to mist up. The risk of having an acci-

AUTO
A1AUTO




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120
WARNING
•The auxiliary heating must never be op erated 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 such 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 substances (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 running, 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 resu lt in a formation of water vapour in
the area of the engine compartment. This is quite normal and is not an operating
problem.
•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! .
•When driving, the auxiliary heating can only be switched on, if the exterior
temperature is lower than 5 °C.
•The air inlet in front of the windscreen must be free of ice, snow or leaves in
order to ensure that the auxili ary 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.
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 Setup (settings).
– From the menu Settings select Aux. heating (auxiliary heating).
– In the menu Aux. heating (auxiliary heating) ⇒ fig. 141 select the
menu point Weekday and set the current day.
Fig. 141 Information
display: Aux. Heating (auxil-
iary heating)
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– 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 (auxiliary heating) select the menu point
Running time and set the desired operating period in steps of
1 minute. The operating period can be 5 to 60 minutes.
– By selecting the menu point Back, you will reach in the menu
Aux. Heating (auxiliary heating) .
– In the menu Aux. heating (auxiliary heating) select the menu point
Mode .
– In the menu Mode select the desired mode Heating or Ventilation .
Programming
For the programming of the auxiliary heating (auxiliary heating and ventilation) in
the menu Aux. heating (Aux. heating) there are three pre-set times:
•Pre-set time 1
•Pre-set time 2
•Pre-set time 3
In each pre-set time, the day (if necessary each day = daily) and the time (hour and
minute) can be set for the operating period of the auxiliary heating and/or ventila-
tion.
If you leave the pre-set menu by selecting the menu Back or do not operate the
display for longer than 10°seconds, the set values are stored, but the pre-set time is
not active.
Both other pre-set times can be prog rammed and stored in the same way.
If you select the menu Activate after setting the desired values, appears on the
display Pre-set time (weekday, hours, minute) activated! and the set pre-set
time is active.
Only one programmed pre-set time can be active.
The last programmed pre-set time remains active. Changing the active pre-set time is carried out after selecting the menu point
Activate
in the menu Aux. heating (auxiliary heating) by selecting a pre-set time.
The prerequisite for the correct switching on of the auxiliary heating (auxiliary
heating and ventilation) according to th e programmed pre-set time is the correct
setting of the current time and the weekday ⇒ page 120.
If the system is running, a warning light in the button for direct switching on/off of
the auxiliary heating lights up.
The running system deactivates after expiration of the operating period or is deac-
tivated earlier by pres sing the button for direct switching on/off of the auxiliary
heating ⇒page 123.
The random pre-set time can be deactivated by selecting the menu point Deactive
in the menu Activate.
After selecting the menu point Fa c t o r y s e t t i n g in the menu Aux. heating
(auxiliary heating) , it is possible to change to the factory setting.
Radio remote control
The auxiliary heating (auxiliary heating and ventilation) can be
switched on or off with the remote control.
– For switching on, press the button .
– For switching off, press the button .


Fig. 142 Auxiliary heating:
Radio remote control
ON
OFF
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Direct switching on/off
The 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. 143 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 .
Fig. 143 Button for direct
switching on/off of the auxil-
iary heating (auxiliary
heating and ventilation) on
the operating part of the
Climatic

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Ignition lock
Petrol engines
- ignition switched off, engine off, the steering can be locked.
- ignition switched on
- start engine
Diesel engines - interruption of fuel supply, ignition switched off, engine off, the steering can
be locked.
- heating glow plugs on, ignition switched on
•You should not switch on any major elec trical components during the heating
period otherwise the vehicle batter y will be drained unnecessarily.
- start engine
Applies to all models:
Position
To lock the steering , with the ignition key withdrawn, turn the steering wheel until
the steering locking pin is heard to engage. You should always lock the steering as
a general rule if you leave your vehicle. This acts as a deterrent against possible theft
of your vehicle ⇒.
Position Move the steering wheel back and forward
a little if the ignition key cannot, or
cannot easily be turned into this position, in order to release the steering lock.
Position
The engine is started in this position. At the same time switched on low beam or
main beam or other electrical compon ents with major power consumption are
briefly switched off. The ignition key moves back into position when one
releases the key.
The ignition key must be turned back into position each time before starting the
engine again. The starter repeat lock in th e ignition lock prevents the starter being
engaged when the engine is ru nning and thus getting damaged.
Ignition key withdrawal lock (automatic gearbox)
You can only withdraw the ignition key after switching off the ignition if the selector
lever is in position P .
WARNING
•When driving, the ignition key must always be in the position (igni-
tion switched on) without the engine running. This position is indicated by
the warning lights coming on. If this is not the case, it could result in unex-
pected locking of the steering wheel - risk of accident!
•Only remove the ignition key from the ignition lock when the vehicle has
come to a standstill (put on the handbrake or select the selector lever posi-
tion P). The steering lock can enga ge immediately - risk of accident!
•Always withdraw the ignition key if you are going to leave the vehicle,
even for a short time. This is particularly important if children are left in the
vehicle. The children might otherwise star t the engine or switch on electrical
equipment (e.g. power windows) - risk of accident or injury!
Fig. 146 Ignition lock posi-
tions
A1
A2
A3
A1
A2
A3
A1
A2
A3
A2
A1
A2
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Starting the engine
General
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 may 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 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 oper ating temperature - risk of damaging the
engine!
•Vehicles which are fitted with an exhaust 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 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 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 257.
•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 igniti on has been switched on.
A3
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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 257.
•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 125, 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 your 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 continue running fo r 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 car is stationary. Depress the clutch pedal and hold
it fully depressed. Wait a moment before 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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