
For the sake of the environmentPollutant emissions are also lower when fuel is being saved » page 143, Eco-
nomical driving and environmental sustainability .
Operational problems
First read and observe the introductory information and safety warn-
ings
on page 98.
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.
› One of the fuses has blown. Check the fuse and replace if necessa-
ry » page 244 .
› 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 resolve the operational problem yourself, or if the cooler output has reduced, switch off the cooling system and seek assistance from a
specialist garage.
Air conditioning system (manual air conditioning
system)
Introduction
This chapter contains information on the following subjects: Control elements
100
adjusting
102
Recirculated air mode
102
The cooling system operates only if the following conditions are met. The cooling system is switched on » page 100.
The engine is running.
The outside temperature is above approx. +2 °C.
The blower switch is switched on (positions 1-4).
Under certain circumstances, air at a temperature of about 5 °C can flow out of the vents when the cooling system is switched on.
If the desired interior temperature can also be achieved without activating the
cooling system, fresh air mode should be selected.
The cooling system is switched off at a high coolant temperature in order to pro-
vide cooling at a high load of the engine.
CAUTION
Lengthy and uneven distribution of the air flow out of the vents (especially
around the feet) and large differences in temperature, for example, when getting
out of the vehicle, can cause susceptible individuals to catch a cold.
Note
We recommend that you have the air conditioning system cleaned by a specialist
garage once every year.
Control elements
Fig. 107
The air conditioning system: Control elements
First read and observe the introductory information and safety warn- ings
on page 100.
Functions of the individual controls » Fig. 107 :
Set the temperature (turn to the left to reduce the temperature: turn to the right to increase temperature)
Set the blower stage (stage 0: Fan off, stage 4: the highest blower speed)
AB100Using the system

Set the direction of the air outlet » page 99
Switch cooling system on/off
Switching the rear window heater on/off » page 59
Aux. heating on/off » page 107
Recirculating air operation on/off » page 102
Note
The warning light in the symbol button lights after activation, even if not all of
the conditions for the function of the cooling system are met » page 100. By light-
ing up of the indicator light in the button, the operational readiness of the cooling
system is signalled.C101Air conditioning system

adjustingFirst read and observe the introductory information and safety warnings
on page 100.
Recommended basic settings of the control elements of the air conditioning system for the respective operating modes:
SettingsControl dial settings » Fig. 107 on page 100Button » Fig. 107 on page 100Air outlet vents 2 » Fig. 105
on page 99ABC
Defrost/defog windscreen and
side windows a)Desired tempera-
ture3 or 4Automaticallyswitched onDo not switch onOpen and align with the side windowThe fastest heatingTo the right up tothe stop3Switched offBriefly switch onOpeningComfortable heatingDesired tempera- ture2 or 3Switched offDo not switch onOpeningThe fastest coolingTo the left up to
the stopbriefly 4, then 2 or 3ActivatedBriefly switch onOpeningComfortable coolingDesired tempera- ture1, 2 or 3ActivatedDo not switch onOpen and align to the roofFresh air mode - ventilationTo the left up tothe stopDesired positionSwitched offDo not switch onOpeninga)
We recommend that you do not use this setting in countries with high humidity levels. This can result in heavy cooling of the window glass and the following fogging from outside.
We recommend that you leave the air outlet vents 3 » Fig. 105 on page 99 in the
opened position.
Recirculated air mode
First read and observe the introductory information and safety warn-ings
on page 100.
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 on/off
›
Press the symbol button
.
The indicator light in the button lights up.
› Press the symbol button
again.
The indicator light in the button goes out.
Recirculated air mode is switched off automatically if the air distribution controlC
» Fig. 107 on page 100 is turned to position . Recirculated air mode can be
switched on again from this setting by repeatedly pressing the symbol button .
WARNINGDo not leave recirculated air mode on over a longer period of time, as “stale”
air can cause fatigue of the driver and passengers, reduce attention levels and
also cause the windows to mist up. The risk of having an accident increases.
Switch off recirculated air mode as soon as the windows start to mist up.
102Using the system

Climatronic (automatic air conditioning system)
Introduction
This chapter contains information on the following subjects:
Control elements
103
automatic mode
104
Switching the cooling system on/off
104
Setting the temperature
104
Recirculation mode - Version 1
105
Recirculation mode - Version 2
106
Controlling blower
106
Defrosting windscreen
106
The Climatronic in automatic mode ensures the best-possible setting of the tem-
perature of the outflowing air, the blower stage and air distribution.
The system also takes sunlight into account, which eliminates the need to alterthe settings manually.
The cooling system operates only if the following conditions are met. The cooling system is switched on » page 100.
The engine is running.
The outside temperature is above approx. +2 °C.
The cooling system is switched off at a high coolant temperature in order to pro-
vide cooling at a high load of the engine.
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 suffi-
cient after switching off the ignition. The solar cells on the sliding/tilting roof de-
liver power for the fresh air blower. This supplies the interior of the car with fresh air.
For an optimum ventilation, the air outlet vents 2 and 3 must be opened » Fig. 105
on page 99.
The ventilation functions only when the sliding/tilting roof is fully closed.
Note■ We recommend that you have Climatronic cleaned by a specialist garage once
every year.■
On vehicles equipped with a factory-fitted radio or radio navigation system, the
Climatronic information is also shown on their displays. This function can be
switched off, see » operating instructions for the radio or navigation system .
Control elements
Fig. 108
Climatronic: Control elements
First read and observe the introductory information given on page 103.
Functions of the individual controls » Fig. 108 :
Adjust the temperature for the left side » page 104
Adjust the blower speed
» page 106
Depending on equipment:
›
Aux. heating on/off » page 108
›
Switching the windscreen heater on/off » page 59
Adjust the temperature for the right side » page 104
Interior temperature sensor
ABCDE103Air conditioning system

For the right side›Turn the control dial D » Fig. 108 on page 103 to the left or right to increase or
decrease the temperature.
The indicator light in the button lights up.
If the warning light in the symbol button is lit, the temperature for both sides
cannot be set with the control dial A
. This function can be restored by pressing
the symbol button . The indicator light in the button goes out.
The interior temperature can be set between +18 °C and +26 ℃. The interior tem-
perature is regulated automatically within this range.
If a temperature lower than +18 °C is selected, a blue symbol lights up at the start
of the numerical scale.
If a temperature higher than +26 °C is selected, a red symbol lights up at the start
of the numerical scale.
At both end positions, Climatronic functions at maximum cooling/heating output and the temperature is not regulated.
CAUTION
Lengthy and uneven distribution of the air flow out of the vents (especially
around the feet) and large differences in temperature, for example, when getting
out of the vehicle, can cause susceptible individuals to catch a cold.
Recirculation mode - Version 1
First read and observe the introductory information given on page 103.
Recirculated air mode prevents polluted air outside the vehicle from getting intothe vehicle, for example when driving through a tunnel or when standing in a
traffic jam.
If a considerable increase in concentration of pollutants is recognised by the air quality sensor, recirculated air mode will temporarily be switched off.
If the concentration of pollutants decreases to the normal level, the air distribu-
tion control is automatically switched off so that fresh air can be guided into the
vehicle interior.
In recirculated air mode air is sucked out of the interior of the vehicle and then
fed back into the interior. When the automatic air distribution control is switched
on, an air quality sensor measures the concentration of pollutants in the drawn in
air.
Switching recirculated air mode on›
Repeatedly press the button until the indicator light on the
left side of the
button is illuminated.
Switch on automatic air distribution control
›
Repeatedly press the button until the warning light on the
right-hand side
of the button lights up.
Switch off automatic air distribution control temporarily If the air quality sensor does not switch on automatic recirculated air mode whenthere is an unpleasant smell, you can switch it on manually.
›
Press the symbol button .
The indicator light lights up in the button on the left side.
Switching recirculated air mode off
›
Press the button
or press the symbol button again until the warning
lights in the button go out.
WARNINGDo not leave recirculated air mode on over a longer period of time, as “stale”
air can cause fatigue of the driver and passengers, reduce attention levels and
also cause the windows to mist up. The risk of having an accident increases.
Switch off recirculated air mode as soon as the windows start to mist up.
Note
■ If the windscreen mists up, press the symbol button . Press the button
once the windscreen has demisted.■
The automatic air distribution control operates only if the outside temperature
is higher than approx. 2 °C.
105Air conditioning system

Auxiliary heating (auxiliary heating and ventilation)
Introduction
This chapter contains information on the following subjects:
Switching on/off
108
Radio remote control
109
Conditions for the functioning of auxiliary heating (Aux. heating and ventilation),
hereinafter referred to only as auxiliary heating (Aux. heating).
The charge state of the vehicle battery is sufficient.
The fuel supply is adequate (the warning icon
is not lit in the display of the
instrument cluster).
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 de-
creased (e.g. with the vehicle parked in the sun).
Auxiliary heating (aux. heating)
The auxiliary heating (aux. heating) can be used when stationary, when the en- gine is switched off to preheat the vehicle and while driving (e.g. during the heat-
ing phase of the engine).
The auxiliary heating (auxiliary heating) functions in connection with the air-con-
ditioning system or Climatronic.
The auxiliary heating (aux. heating) also warms up the engine. This is not valid for
vehicles with the 3.6 l/191 kW FSI engine.
The auxiliary heating (parking heating) warms up the coolant by combusting fuel
from the vehicle tank. The coolant heats air flowing into the passenger compart-
ment (as long as the blower fan speed
B
» Fig. 107 on page 100 or » Fig. 108 on
page 103 is not set to zero).
WARNING■ The auxiliary heating (aux. heating) must never be operated in closed rooms
(e.g. garages) – risk of poisoning!■
The auxiliary heating (aux. heating) must not be allowed to run during refu-
elling – risk of fire.
■
The exhaust pipe of the auxiliary heating (aux. heating) is located on the un-
derside of the vehicle. Therefore, if you wish to operate the auxiliary heating
(aux. heating), do not park the vehicle in such a way that the exhaust gases
can come into contact with highly flammable materials (e.g. dry grass) or easily
inflammable substances (e.g. spilt fuel) – risk of fire.
CAUTION
■ Running auxiliary heating (aux. heating) consumes fuel from the vehicle tank
and automatically controls the filling level. If only a low quantity of fuel is present in the fuel tank, the auxiliary heating (aux. heating) switches off.■
The exhaust pipe of the auxiliary heating (aux. 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 (aux. heating) 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 kilometres in order to recharge
the vehicle battery.
Note
■ The auxiliary heating (aux. heating) switches on the blower B » Fig. 107 on
page 100 or » Fig. 108 on page 103 only 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.
■
The air inlet in front of the windscreen must be free (e.g. of ice, snow or leaves)
to ensure that the auxiliary heating (aux. heating) operates properly.
■
So that warm air can flow into the vehicle interior after switching on the auxili-
ary heating, you must maintain the comfort temperature normally selected by
you, leave the fan switched on and leave the air outlet vents in an open position.
It is recommended to put the air flow in the position or .
107Air conditioning system

Switching on/offFig. 109
Button for switching on/off the system directly on the operating
part of the air conditioning/Climatronic
First read and observe the introductory information and safety warn-ings
on page 107.
The auxiliary heating (aux. heating) can be switched on/off as follows.
Manually switching on using the button on the operating part of the manual air conditioning/Clima-
tronic. The warning light in the button lights up » Fig. 109;
by using the radio remote control » page 109.
Manually switching off
using the button on the operating part of the manual air conditioning/Clima-
tronic. The warning light in the button goes out » Fig. 109;
by using the radio remote control » page 109.
After switching off the auxiliary heating, the coolant pump runs for a short period.
Automatic switching on/off
The following menu items can be selected from the Aux. heating menu item in
the information display » page 28 (depending on the vehicle equipment):
■ Day of the week - set the current day of the week;
■ Running time - Set the required running time in 5 minute increments. The run-
ning time can be 10 to 60 minutes.
■ Mode - Set the desired heating/ventilation mode;
■
Starting time 1 , Starting time 2 , Starting time 3 - for each pre-set time, the day
and the time (hour and minute) can be set for switching on the auxiliary heating
and ventilation. An empty position can be found between Sunday and Monday
when selecting the day. If this empty position is selected, the activation is per-
formed without taking into account the day.
■ Activate - Activate pre-set mode;
■ Deactivate - Deactivate pre-set mode;
■ Factory setting - Restore factory setting;
■ Back - Return to main menu
Only one programmed pre-set time can be active.
The last programmed pre-set time remains active.
After the auxiliary heating (aux. heating) automatically activates at the set time, it is necessary to pre-set a time again.
If the menu item Back is selected or no changes are made on the display for lon-
ger than 10 seconds, the set values are stored, but the pre-set time is not activa-
ted.
The system switches itself off at the end of the running time set under the menu item Running time .
Note
An indicator light on the button » Fig. 109 is illuminated when the system is
running.
108Using the system

Radio remote controlFig. 110
Auxiliary heating (aux. heating):
Radio remote control
First read and observe the introductory information and safety warn-
ings on page 107.
Explanation of graphic
Aerial
Warning light
Switch on aux. heating
Switch off aux. heating
The transmitter and the battery are housed in the housing of the remote control. The receiver is located in the interior of the vehicle.
When the battery is fully charged, the range of the remote control is a few hun-
dred metres. Obstacles between the remote control and the vehicle, bad weather
conditions and a weaker battery in the remote control can clearly reduce the range.
To switch the auxiliary heating (aux. heating) on or off, hold the remote control
vertical, with the aerial
A
pointing upwards. The antenna must not be covered
with the fingers or the palm of the hand during this process.
The auxiliary heating can only be switched on/off safely using the radio remote control, if the distance between the radio remote control and the vehicle is at
least 2 m.
ABAfter pressing the button, the warning light in the remote control gives the
user different kinds of feedback:Display warning light B » Fig. 110ImportanceLights up green for around 2 seconds.The auxiliary heating was switched on.Lights up red for around 2 seconds.The auxiliary heating (aux. heating) is
switched off.Slowly flashes green for around 2 sec-
onds.The ignition signal was not received.Quickly flashes green for around 2 sec-
onds.The auxiliary heating (aux. heating) is
blocked, e. g. because the tank is near-
ly empty or there is a fault in the auxili-
ary heating (aux. heating).Flashes red for around 2 seconds.The switch off signal was not received.Lights up orange for around 2 seconds,
then green or red.The battery is weak, however the
switching on or off signal was received.Lights up orange for around 2 seconds,
then flashes green or red.The battery is weak, however the
switching on or off signal was not re-
ceived.Flashes orange for around 5 seconds.The battery is discharged, however the
switching on or off signal was not re-
ceived.
Replace the battery » page 239.
CAUTION
The radio remote control comprises electronic components and must therefore be
protected against water, severe impacts and direct sunlight.
109Air conditioning system