2005 Alfa Romeo 159 technical specifications

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CLIMATE CONTROL SYSTEM
1Upper vent - 2Adjustable and swivel central vents - 3Adjustable and swivel side vents - 4Lower vents for rear seats -
5Adjustable and swivel air vents for rear seats (where provided) - 6Lower vents for front seats - 7Windscreen and front
windows demisting/defrosting vents.
A0E0220m
fig. 41

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CENTRAL AND
SIDE VENTS fig. 42-43
These vents are aligned on the dash-
board. Each vent Afeatures a wheelB
to adjust air flow and a device Cto di-
rect air flow horizontally or vertically.
O= Completely closed
I= Completely open
A0E0014mfig. 42A0E0057mfig. 44
UPPER VENT fig. 44
The vent has an opening/closing con-
trol.
O= Completely closed
I= Completely open
WINDSCREEN AND FRONT
SIDE WINDOW DEMISTING/
DEFROSTING VENTS
These vents are located at the ends (A-
fig. 45) and on the front part Bof the
dashboard.REAR VENTS
(where provided) fig. 46
Each vent Afeatures a wheel Bto ad-
just air flow and a device Cto direct it.
O= Completely closed
I= Completely open
A0E0012mfig. 43
OFF
O
I
AUTOAUTO
A0E0088mfig. 46
A0E0067mfig. 45

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AIR DISTRIBUTION
SELECTION
O: air flow to driver’s/passenger’s
body;
M: air flow to driver’s/passenger’s
body and lower part of the passenger
compartment;
N: air flow towards the front and rear
lower part of the passenger compartment;
Q: air flow towards the lower part of
the passenger compartment and wind-
screen;
ü: air flow towards the windscreen
MANUAL CLIMATE
CONTROL SYSTEM
(where provided)
CONTROLS fig. 47
A- Air temperature knob (mixing warm
and cold air);
B- Air distribution knob;
C- Fan speed knob;
D- Heated rear window and door mir-
rors defrosting on/off button;
E- Windscreen, front side windows and
door mirrors max. demisting/defrosting
on/off button;
F- Air recirculation on/off button;
G- Compressor on/off button.
fig. 47A0E0011m

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QUICK WINDSCREEN
AND FRONT SIDE WINDOW
DEMISTING/DEFROSTING
(MAX-DEF function)
Press button -: the button leds -,
√and(will turn on. To turn this func-
tion off, press again button
-the but-
ton led will turn off. After defrosting, turn
the function off to keep top comfort con-
ditions.
Window demisting
Climate control system
√is very use-
ful to speed up window demisting and
it is therefore to be turned on in the
event of considerable moisture. In any
case it is recommended to perform the
following preventive demisting proce-
dure:
❒turn air recirculation off (if on);
❒turn knob Cto second speed;
❒turn knob BtoQ.
HEATED REAR WINDOW
AND DOOR MIRROR
DEMISTING/DEFROSTING
Press button (to activate the demist-
ing/defrosting function: when this func-
tion is on, the circular led around the but-
ton will turn on.
On certain versions, turning this function
on will also activate windscreen de-
frosting in the windscreen wiper area.
This function is timed and switches off
automatically after few minutes, or by
pressing again the button or by turning
the engine off. It will not be switched
on automatically when restarting the en-
gine.
IMPORTANTDo not apply stickers on
the inside of the heated rear window
over the heating filaments to avoid dam-
age that might cause it to stop work-
ing properly.
WARMING THE PASSENGER
COMPARTMENT
Proceed as follows:
❒turn knob Ato the required temper-
ature;
❒turn knob Cto the required speed;
❒turn knob Bto the required distribu-
tion:
N: to warm the feet of front and rear
passengers;
M: to warm the feet and keep the face
cool (bilevel function);
Q: to warm the feet and at the same
time demist the windscreen;
❒turn air recirculation off (if on).

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CLIMATE CONTROL
(fast cooling)
Proceed as follows:
❒turn knob Acompletely leftwards;
❒turn knob Cto top speed;
❒turn knob BtoO;
❒press buttons √andv(buttons
leds on).
How to keep the required
cooling
Proceed as follows:
❒turn air recirculation off (if on).
❒turn knob Ato the required temper-
ature;
❒turn the knurled ring Cto the required
fan speed.
LOOKING AFTER THE
SYSTEM
During the winter, the climate control
system
√must be turned on at least
once a month for about ten minutes.
Before summer, have the system
checked at Alfa Romeo Authorized Ser-
vices.
RECIRCULATION
To turn this function on press button
v: the button led will turn on.
This function is particularly useful when
the outside air is heavily polluted (in a
traffic jam, tunnel, etc.) However, it is
better not to use it for long periods, es-
pecially if there are several people in the
car to prevent window misting up.
Do not use the air recirculation function
on rainy/cold days as it would consid-
erably increase the possibility of the win-
dows misting inside.
IMPORTANTThe inside air recircula-
tion system makes it possible to reach
the required (“heating” or “cooling”)
conditions faster.

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To guarantee perfect
and regular sensor op-
eration do not apply
stickers in the “monitoring”
area between sensor and wind-
screen. Keep windscreen and
sensor clean and avoid to accu-
mulate dust or other sub-
stances.
AUTOMATIC TWO-/
THREE-ZONE
CLIMATE CONTROL
SYSTEM
(where provided)
DESCRIPTION
The car is fitted with a two-/three-zone
climate control system which makes it
possible to separately adjust the air tem-
perature in the two/three passenger’s
compartment areas to reach the required
comfort.
For top quality temperature control in
the two/three areas of the passenger's
compartment, the system is fitted with
external temperature sensor, passen-
ger's compartment temperature sensor
and two-side sun radiation sensor.
The climate control system automatically
controls and adjusts the following pa-
rameters and functions:
❒air temperature at driver/passengers
vents;
❒fan speed;
❒air distribution at driver/passenger
vents;
❒compressor activation;
❒air recirculation.
The following parameters and functions
can be set or changed manually:
❒required temperature;
❒fan speed;
❒air distribution on seven levels ;
❒compressor on/off;
❒window demisting/defrosting;
❒air recirculation;
❒one-zone function.
The system is fitted with AQS (Air Qual-
ity System) sensor (where provided),
that turns on air recirculation automati-
cally when it detects the presence of out-
side polluted air (for example in queues
and tunnels).
Where provided, the system also features
a demisting sensorA-fig. 48 ( set be-
hind the driving mirror), capable of mon-
itoring a preset area of the internal wind-
screen pane and to cut in automatically
to prevent or to reduce misting up through
a suitable strategy.
A0E0091mfig. 48
This sensor can be disabled by any man-
ual control and it is activated each time
the engine is started and in any case
when the user presses one of the AUTO
buttons.

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I- Button for activating the MONO function (alignment of set temperatures), cor-
responding to driver’s one;
L- air recirculation on/off button;
M- climate control compressor on/off button;
N- passenger’s compartment temperature sensor TWO-ZONE controls fig. 49
A- air distribution buttons (on driver and
passenger side);
B- temperature adjustment knob on dri-
ver side;
C- automatic operation button (FULL
AUTO);
D- climate control data display;
E- temperature adjustment knob on
passenger side;
F- heated rear window/door mirrors
on/off button;
G- MAX-DEF function button (fast de-
frosting/demisting function for wind-
screen, heated rear window and door
mirrors with heating function);
H- buttons for adjusting the fan speed
and for turning the climate control sys-
tem off (OFF);
fig. 49 - TWO-ZONE configurationA0E0058m

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THREE-ZONE controls fig. 50
Front controls
A- air distribution buttons (driver and pas-
senger side);
B- temperature adjustment knob on driver
side;
C- automatic operation button (FULL AUTO);
D- climate control data display;
E- temperature adjustment knob on passen-
ger side;
F- heated rear window/door mirrors on/off
button;
G- MAX-DEF function button (fast defrost-
ing/demisting function for windscreen, heat-
ed rear window and door mirrors with heating
function);
H- buttons for adjusting the fan speed and
for turning the climate control system off
(OFF);
I- Button for activating the MONO function
(alignment of set temperatures), correspond-
ing to driver’s one;
L- air recirculation on/off button;
M- climate control compressor on/off button;
N- passenger’s compartment temperature
sensor
Rear controls
P- knob for adjusting temperature on rear
passenger side;
Q- button for turning on automatic operation
(FULL AUTO) and for turning off air flow to
rear seats (OFF);
R- air distribution buttons;
S- rear temperature display.
fig. 50 - THREE-ZONE configuration - Front and rear controlsA0E0059m