2008 Alfa Romeo 159 heating

7
SAFETY
DEVICES
WARNING LIGHTS
AND MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
DASHBOARD
AND
CONTROLS
CORRECT USE
OF THE CAR
DASHBOARD
A0E0056mfig. 1
1.Adjustable swivel side air vents - 2.Front side window demisting/defrosting vents - 3.External lights control lever - 4.In-
strument panel - 5.Driver’s air bag and horn -6.Windscreen wiper control lever - 7.Upper central vent - 8.Adjustable swiv-
el centre air vents - 9.Fuel level gauge/engine coolant temperature gauge/engine oil temperature gauge (petrol versions)
or turbocharger pressure gauge (diesel versions) - 10.Passenger’s air bag - 11.Passenger’s knees air bag (where provid-
ed) - 12.Glove box - 13.Sound system (where provided) - 14.Heating/ventilation/climate controls - 15.Engine
START/STOPbutton - 16.Ignition device - 17.Driver’s knees air bag - 18.Sound system controls on the steering
wheel (where provided) - 19.Cruise Control lever (where provided) - 20.Bonnet opening lever - 21.Dashboard fusebox
lid - 22.Switches for external lights, trip meter reset and headlamp aiming device.

56
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
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).

57
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
CLIMATE CONTROL
(fast cooling)
IMPORTANTThe compressor √can
be enabled only if the ventilation is en-
abled.
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.After connecting/dis-
connecting the battery,
wait for 3 minutes at
least before fitting the electronic
key into the ignition device in
order to allow the climate con-
trol system control unit to reset
the positions of the electric ac-
tuators that adjust air temper-
ature and distribution.

59
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
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

60
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
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

61
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
AIR TEMPERATURE
ADJUSTMENT KNOBS
Turning the knob knurled rings (B/
E/P), clockwise or counter-clockwise,
respectively raises or lowers the tem-
perature of the air required respective-
ly in the left front zone (knob B) or right
front zone (knob E) or rear zone (knob
P) of the passenger compartment. The
temperatures set are shown on the dis-
playD/S.
Turning the knob knurled rings fully
clockwise or counter-clockwise until they
reach the extreme selections HIorLO,
the maximum heating or cooling func-
tions are respectively engaged.HI function (HIGH)
(maximum heating power)
It is switched on by setting a tempera-
ture of more than 32°C on the display,
and can be switched on independently
from the driver’s or passengers’ side, or
both of them; this setting brings the sys-
tem to the “one-zone” mode and it is
shown by both displays.
This functions can be switched on when
you wish to heat the passenger com-
partment as quickly as possible, by tak-
ing the greatest advantage from the sys-
tem potential.
The function uses the maximum tem-
perature of the heating fluid, whereas
air distribution and fan speed are con-
trolled automatically by the system.
SWITCHING THE CLIMATE
CONTROL SYSTEM ON
The system can be turned on by press-
ing any button (excluding
(,vand
MONO); it is however advisable to set
the required temperatures on the display
and then to press the AUTO button.
The climate control system allows to per-
sonalise required temperatures (driver and
passengers).

62
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
LO (LOW) function
(highest cooling power)
It is switched on by setting a tempera-
ture lower than 16°C on the display;
this setting is shown on the display. This
function can be switched on when you
wish to cool the passenger compartment
as quickly as possible, by taking the
greatest advantage from the system po-
tential.
The function cuts off air heating, switch-
es on both internal air recirculation (to
prevent hot air from entering the com-
partment) and the climate control com-
pressor, brings air distribution to
¯/˙
and the fan speed is controlled auto-
matically by the system. With the function switched on, howev-
er, all the manual settings can be made.
To switch the function off, you only need
to turn the ring of knob B/E/Pof the
temperature set to a value higher than
16°C; the opposite display and the rear
display (where provided) will show
16°C.
Pressing button AUTO, the display will
show a temperature of 16°C and re-
turns to an operating condition with au-
tomatic temperature adjustment. This function should not be ac-
tivated when the engine is cold,
to prevent air not warm enough
from entering the passenger
compartment.
With the function switched on, howev-
er, all the manual settings can be made.
To switch the function off, you only need
to turn the ring of knob (BorE/P) of
the temperature set to a value lower
than 32°C; the opposite display and the
rear display (where provided) will show
32°C.
Pressing button AUTO, the display will
show a temperature of 32°C and re-
turns to an operating condition with au-
tomatic temperature adjustment.

64
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
The MAX-DEF function activates the fol-
lowing operations:
❒rear panel turning off;
❒air flow increase;
❒air distribution at DEF;
❒outside air intake;
❒compressor activation;
❒AQS function deactivation (where
provided)
❒rear window heating activation.
When the MAX-DEF function is on, the
only manual operations possible are
manual adjustment of the fan speed and
switching heated rear window off.IMPORTANTIf the engine is not
warm enough, the function will not en-
gage the predefined fan speed imme-
diately, to limit the flow to the passen-
ger compartment of air that is not warm
enough to demist the windows.
Pressing again one of the following but-
tons:
v,√, AUTO, MONO or -the
system switches off the MAX-DEF func-
tion, resuming the system operating con-
ditions prior to turning it on, in addition
to activating the last function required,
if any.
IMPORTANT Don’t turn the MAX-DEF
function on with engine off to prevent
draining the battery.
QUICK FRONT WINDOW
DEMISTING/DEFROSTING
(MAX-DEF function)
Pressing button -the climate control
automatically activates timed operation
of all the functions required to quicken
demisting/defrosting of the windscreen
and front side windows and, on certain
versions, electric windscreen demisting
in the windscreen wiper area.
The MAX-DEF can be turned on also with
engine off. When this function is on the
circular led around the button will turn on.