2012 Alfa Romeo Giulietta technical specifications

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You can adjust one function automatically and have the automat-
ic system control all the others. The amount of air introduced into
the passenger compartment is not affected by vehicle speed; it is
electronically controlled by a fan. The air temperature is always au-
tomatically controlled according to the temperature shown on the
display (except for when the system is off or in certain conditions
when the compressor is not running).
The system can manually programme and adjuste:
❍air temperature on driver’s/passenger’s side;
❍fan speed (continuous variation);
❍air distribution to 7 positions;
❍climate control compressor enabled;
❍fast demisting/defrosting function;
❍air recirculation;
❍heated rear windscreen;
❍turning the system off.
DESCRIPTION
The automatic dual zone climate control system regulates the tem-
perature in the passenger compartment in two areas. The system
keeps the comfort in the passenger compartment constant and
compensates for variable external conditions.
NOTEThe reference temperature is 22°C for optimal comfort man-
agement.
The automatically controlled parameters and functions are:
❍air temperature delivered to driver/front passenger vents;
❍air distribution to driver/front passenger vents;
❍fan speed (continuous air flow variation);
❍switching the compressor fan on (for cooling/dehumidifying
the air);
❍air recirculation.
All these functions can be manually adjusted by operating the sys-
tem and selecting one or more functions and modifying their pa-
rameters. Automatic control of the manually changed functions will
be suspended: the system will only override your settings for safe-
ty reasons.
Manual selections will always have higher priority over automatic
settings and will be stored until the AUTO button is pressed, except
for the cases in which the system will intervene for particular, safe-
ty-related reasons.
The climate control system uses an average radi-
ating temperature sensor installed under a cover
below the inner rearview mirror. To ensure opti-
mal operation of the climate control system, do not ob-
struct the detection cone of this sensor with any object.

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ADJUSTING THE AIR TEMPERATURE
Turn A or L knob to right or left to adjust the air temperature: A
knob for the front left-hand area, L knob for the front right-hand
area of the passenger compartment. The set temperatures are
shown on the display.
Press the MONO button to align the air temperature between the
two zones.
Turn L knob to go back to the separate management of air tem-
peratures in the two zones.
Turn the knobs fully clockwise or anti-clockwise to engage respec-
tively HI (maximum heating) or LO (maximum cooling). To de-
activate these functions, rotate the temperature knob to the de-
sired temperature.
SWITCHING THE CLIMATE CONTROL SYSTEM ON
The system can be turned on in different ways: you are recom-
mended to press the AUTO button and turn the knobs to set the re-
quired temperatures.
In this way the system operates completely automatically to ad-
just the temperature, quantity and distribution of the air introduced
into the passenger compartment. It also manages the air recircu-
lation system and the enablement of the air conditioning com-
pressor.
During fully automatic system operation, you can change at any
time the set temperatures, air distribution and fan speed by using
the relevant buttons or knobs: the system will automatically change
its settings to adjust to the new requirements.
During fully automatic operation (AUTO), the word AUTO will dis-
appear if the air distribution and/or flow rate and/or engagement
of the compressor and/or recirculation settings are changed.
In this way the climate control system will continue to automati-
cally manage all functions except for those that have been manu-
ally adjusted. There is only one fan speed in all the areas of the
passenger compartment.

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In AUTO mode, the climate control system automatically manage
air distribution settings; the LED on H buttons are off.
When set manually, the set distribution is shown by the LEDs on
the selected buttons.
In combined function mode the relevant function is enabled si-
multaneously with those already set by pressing the correspond-
ing button. If a button whose function is active yet is pressed, the
operation is cancelled and the corresponding LED goes off. To re-
store automatic control of the air distribution after a manual se-
lection, press the AUTO button.SETTING THE AIR DISTRIBUTION
Press H (//) buttons to manually select one of the sev-
en possible air distribution settings:
Air flow to the windscreen and front side window vents to
demist/defrost them.
Air flow from central and side dashboard vents to ventilate
the chest and the face during the hot season.
Air flow to the front and rear footwell vents. This air distribu-
tion setting heats the passenger compartment most quickly,
giving a prompt sensation of warmth.

Air flow distribution between footwell vents (hotter air) and
centre and side dashboard vents (cooler air). This distribution
setting is useful in spring and autumn on a sunny day.

Air flow distributed between foot well vents and windscreen
and front side window defrosting/demisting vents. This distri-
bution setting allows to warm up the passenger compartment
and prevents the windows from misting up.

Air flow distribution between windscreen demisting/defrosting
vents and side and central dashboard vents. This setting allows
air to be sent to the windscreen in conditions of strong sunlight.


Air flow distribution to all vents in the car.

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IMPORTANT If the system is unable to reach/maintain the required
temperature in the various areas of the passenger compartment,
the set temperature will flash for a few seconds.
To restore automatic system control after one or more manual
adjustments, press the AUTO button.
MONO BUTTON
Press the MONO button (LED on button lit) to align the air tem-
perature on passenger’s side with that on driver’s side.
This function makes temperature regulation easier when the driver
is travelling alone.
Turn L knob to set the temperature on passenger’s side and go back
to separate air temperature management.
REGULATING THE FAN SPEED
Turn F knob to increase/decrease the fan speed. The speed is dis-
played by the G LEDs on the F knob.
❍maximum fan speed = all LED lit up;
❍minimum fan speed = one LED lit.
The fan can only be excluded if the climate control compressor
has been switched off by pressing B button.
IMPORTANT To restore automatic fan speed control after a manu-
al adjustment, press the AUTO button.
AUTO BUTTON
By pressing the AUTO button (LED on button lit) the climate con-
trol system automatically adjust the following settings in the cor-
responding zones:
❍air quantity and distribution in the passenger compartment;
❍climate control compressor;
❍air recirculation
❍cancelling any previous manual settings.
The LED on the AUTO button will light up to indicate that the func-
tion is on. By manually adjusting at least one of the functions au-
tomatically managed by the system (air recirculation, air distribu-
tion, fan speed or compressor on/off), the LED will go off, indi-
cating that the system is no longer automatically controlling all the
functions.

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It is advisable not to use the air recirculation func-
tion when the outside temperature is low to pre-
vent the windows from rapidly misting up.
Turning the AQS (Air Quality System)
function on
The AQS function automatically activates internal air recirculation
when the outside air is polluted (e.g. in traffic queues and tunnels).
IMPORTANT With the AQS function active, after the internal air
recirculation system has been running for a certain time, the cli-
mate control system enables the intake of outside air for approx-
imately 1 minute. This takes place regardless of the pollution lev-
el of the outside air.
IMPORTANT The air recirculation system makes it possible to reach
the required heating/cooling conditions faster. It is, however, in-
advisable to use it on rainy/cold days as it would considerably in-
crease the possibility of the windows misting up inside (especially
if the climate control system is off). When the outside tempera-
ture is low, recirculation is forced off (air drawn from the outside)
to prevent the windows misting up.
In automatic operation inside air recirculation will be controlled auto-
matically by the system according to outside environmental condi-
tions.
AIR RECIRCULATION AND AQS
(Air Quality System) FUNCTION
The air recirculation is managed according to the following oper-
ating logics:
❍automatic engagement: A word on B button on;
❍forced engagement (air recirculation always on): LED on v
A button on and A word off;
❍forced disengagement (air recirculation always off, air taken
from the outside): the LED on
vA buttons will switch off
and the A word on B button will switch off.
Forced on/off mode can be selected by pressing button
vA..
When
g(E button off ) is pressed, the climate control system
automatically activates air recirculation (the LED on
vA but-
ton should be on). Press
vA button to turn external air recir-
culation on (LED on button lit) and vice versa.
AQS (Air Quality System) function cannot be operated when
g
button is pressed (LED on button off).

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CLIMATE CONTROL SYSTEM COMPRESSOR
Press C to turn the compressor on/off (the LED on the button will
light up when the compressor is on). The system remembers that
the compressor has been switched off, even after the engine has
stopped.
When the compressor is switched off the system deactivates air re-
circulation to prevent the windows from misting up and deactivates
the AQS function. In this case, although the system is capable of
maintaining the required temperature, the AUTO LED will go out.
The temperatures will flash for a few seconds if the required tem-
perature cannot be maintained.
To restore automatic control for switching on the climate control
compressor, press C button again or press the AUTO button.
With compressor off:
❍if the outside temperature is higher than the set one, the sys-
tem will not be able to satisfy the request. The temperature
value will then flash on the display for a few seconds;
❍the fan speed can be manually reset.
When the compressor is on and the engine is running, manual ven-
tilation cannot drop under the maximum speed (only one LED on).
IMPORTANT With the climate control compressor off, it is not pos-
sible to admit air into the passenger compartment with a tempera-
ture below the outside temperature; moreover, under certain envi-
ronmental conditions the windows could mist up very quickly since
the air cannot be dehumidified.
RAPID WINDOW DEMISTING/DEFROSTING
(MAX-DEF function)
Press-to turn windscreen and side window demisting/defrosting
function on (LED on button lit). The climate control system carries
out the following operations:
❍switches on the climate control compressor when climatic con-
ditions allow;
❍turns air recirculation off;
❍sets maximum air temperature (HI) in both zones;
❍sets proper fan speed according to the engine coolant tem-
perature;
❍directs air flow to the windscreen and front side windows vents;
❍the heated rear windscreen is turned on
❍shows fan speed (LED G lit).
IMPORTANT The MAX-DEF function will remain on for approximately
3 minutes from when the engine coolant reaches adequate tem-
perature.
The LED on the AUTO button will go out when the function is on.
With the function activated the only possible manual adjustments
are adjusting the fan speed and the turning the heated rear wind-
screen off. By pressing B, C,
-or AUTO buttons, the climate
control system will turn the MAX-DEF off.

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DEMISTING/DEFROSTING
HEATED REAR WINDSCREEN
Press(to turn heated rear windscreen demisting/defrosting func-
tion on (LED on button lit). This function switches off automatically
after about 20 minutes or when the engine is turned off. It is not
switched on automatically the next time the engine is started. For
versions/markets, where provided, pressing the
(button it is al-
so possible to defrost/demist the external rearview mirrors (for
versions/markets, where provided) and the heated spray nozzles
(for versions/markets, where provided).
IMPORTANT Do not affix stickers to the inside of the heated rear
windscreen on the heating filaments, to avoid damage that might
cause them to stop working properly.
Thermal comfort windscreen
(for versions/markets, where provided)
Some versions feature a thermal comfort windscreen which, with
the car exposed to the sun, limits the extent of temperature in-
crease inside the passenger compartment, thus ensuring greater
comfort.
Humidity sensor (for versions/markets, where provided)
The humidity sensor prevents the windows from misting up. For
full operation, it is advisable to turn the AUTO on (LED N on). When
the outside temperature is low, the system could automatically turn
the compressor on and turn air recirculation off for safer driving.
TURNING THE CLIMATE CONTROL SYSTEM OFF
Pressgbutton (LED on button off):
❍air recirculation is on, thus isolating the passenger compartment
from the outside;
❍the compressor is off;
❍the fan is off.
❍the heated rear windscreen can be switched on or off.
❍the AQS (Air Quality System) function cannot be turned on.
IMPORTANT The climate control system control unit stores the tem-
peratures set before the system was switched off and restores
the same conditions when any button of the system is pressed (ex-
cept for D button).
Press AUTO button to restart the climate control system in fully
automatic mode.

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NOTEWhen the Start&Stop function is active (engine off and
vehicle speed zero), the automatic recirculation management is
turned off always taking air in from outside, to reduce the proba-
bility of window misting up (as the compressor is off).
SUPPLEMENTARY ELECTRIC HEATER
(for versions/markets where provided)
This device speeds up passenger compartment warming when it is
very cold. The additional heater turns off automatically after reach-
ing the required comfort conditions.
Automatic dual zone climate control system
(for versions/markets, where provided)
The supplementary electric heater is operated automatically ac-
cording to environmental conditions and when the engine is run-
ning.
Manual climate control system
The supplementary heater is activated automatically by turning A
knob to the end of the red section and setting the fan (knob B)
to at least the 1
stspeed.
IMPORTANT NOTES
The heater only works if the outside temperature and engine coolant
temperature are low.
The heater will not activate if the battery voltage is too low.
START&STOP
Automatic climate control system
The automatic climate control system manages the Start&Stop
function (engine off when speed is zero) to ensure adequate com-
fort inside the passenger compartment.
Specifically, the Start&Stop function is turned off when the weath-
er is particularly hot or cold to guarantee an adequate level of com-
fort inside the passenger compartment; therefore, the engine will
not be stopped during these transient conditions, even if the speed
is zero.
When the Start&Stop is on and the engine is off at zero speed,
the climate control system will turn the engine back on if the in-
side temperature conditions should rapidly deteriorate (or if the
user asks for maximum cooling – LO – or quick demisting –
MAX-DEF).
With the Start&Stop function on and engine off at zero speed,
air flow is reduced to the minimum to main comfort conditions in-
side the passenger compartment as long as possible when the sys-
tem is in AUTO mod (LED N on).
The climate control system attempts to manage the discomfort
caused by the engine stopping (compressor and engine coolant
pump off) but operation of the climate control system can be priv-
ileged by turning the Start&Stop off by pressing the button on
the dashboard.
NOTEIn particularly severe climate conditions it is recommen-
ded to limit the use of the Start&Stop function to prevent the com-
pressor from continuously switching on and off, with following fa-
st window misting and accumulation of humidity with unpleasant
smells in the passenger compartment.