2005 Alfa Romeo 159 engine

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).

58
SAFETY
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WARNING
LIGHTS AND
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IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
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.

62
SAFETY
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LIGHTS AND
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EMERGENCY
CAR
MAINTENANCE
TECHNICAL
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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.

63
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
FAN SPEED ADJUSTMENT
Press buttons +/–to increase or to de-
crease the fan speed.
The fan speed is shown by the lit bars on
the display:
❒min fan speed = one bar lit;
❒max fan speed = 6 bars lit;
At starting, if climate control system is
operating in automatic mode, the fan
speed is kept at minimum until the en-
gine has started.
With compressor on and engine running,
the fan speed cannot fall below the min.
speed.
The fan can be cut off (all bars off) on-
ly if the climate control compressor has
been switched off by pressing button
√.
To restore automatic fan speed control
after a manual adjustment, press but-
tons AUTO. AUTO will also go off if the system (spe-
cially when compressor is turned off
manually) cannot reach or cannot keep
the required temperature.
Button
√will not turn off AUTO if the
system can keep the required comfort.
It is inadvisable to use
air recirculation on
rainy/cold days as it would
considerably increase the pos-
sibility of windows misting up
inside.
WARNING
AUTOMATIC OPERATION
(AUTO BUTTON)
Pressing button AUTO (front and rear
controls) the displays will show FULL AU-
TO and the system will automatically ad-
just:
❒fan speed;
❒air distribution in passenger com-
partment;
❒air recirculation;
❒compressor;
and it will cancel all the previous man-
ual adjustments.
Wording FULL will disappear from the
display of the involved area (driver or
front passenger side or rear passenger
side) when performing whatever oper-
ation (excluding temperature change).

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.

65
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
ALIGNING SET
TEMPERATURES
(MONO function)
Pressing button MONO automatically
aligns the temperature and air distribu-
tion on front and rear passenger area
with that on the driver area.
When this function is on, the circular led
around the button will turn on.
Turn knob Bto set the same tempera-
ture between the two/three zones.
Separate operation of set temperatures
(front and rear passengers) is restored
automatically by turning knob EorPor
by pressing again button MONO, the cir-
cular led around the button will turn off.
IMPORTANTOperating the rear con-
trols (Three-zone configuration) will turn
off the MONO function and the relevant
circular led around the MONO button.
CLIMATE CONTROL
COMPRESSOR ON/OFF
Press button √to turn the compressor
on: when climate control compressor is
on the circular led around the button will
turn on. Compressor will stay on also af-
ter turning the engine off.
To turn the compressor off press again
button
√.
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.
IMPORTANT Do not apply stickers on
the inside of the rear window over the
heating filaments to avoid damage that
might cause it to stop working properly.

69
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
SWITCHING THE CLIMATE
CONTROL SYSTEM OFF
Keep pressed button “–“ until the dis-
play shows OFF.
With climate control system off:
❒the system stores performed opera-
tions;
❒the display is off (OFF wording is dis-
played);
❒air recirculation is active (button led
on);
❒compressor is active;
❒ventilation is off.To turn the climate control system on
again press button AUTO or any other
button (excluding
(,vand
MONO). Turning the climate control sys-
tem on again, air recirculation will be
again controlled automatically.
Pressing button OFF on the rear control
will display the wording OFF on the rear
display and will stop air flow to rear
seats.
ADDITIONAL
HEATER (diesel
versions only)
(where provided)
The car is fitted with an additional heater
that supports the engine during cold or
winter weather to quickly reach a com-
fortable temperature in the passenger
compartment.
The additional heater works with the en-
gine running when the outside temper-
ature is below 20°C and the engine has
not yet reached normal operating tem-
perature.

71
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
“FOLLOW ME HOME”
DEVICE
This function allows the illumination of
the space in front of the car for a pre-
set period of time.
Activation
Pull the stalk towards the steering wheel
within 2 minutes from when the engine
is turned off.
At each single movement of the stalk,
the staying on of the lights is extended
by 30 seconds up to a maximum of 3.5
minutes; then the lights are switched off
automatically.
Each time the stalk is operated, the
3
warning light turns on together with the
message on the display (see section
“Warning lights and messages”).
Deactivation
Keep the stalk pulled towards the steer-
ing wheel for more than 2 seconds.
AUTOMATIC HEADLIGHTS
SENSOR (daylight sensor)
(where provided)
It detects the changes of the external
light intensity of the car according to the
light sensitivity set: the greater the sen-
sitivity is, the smaller the amount of ex-
ternal light necessary to control the
switching-on of the external headlights
will be.
On certain versions, the daylight sen-
sor sensitivity can be adjusted through
the “Setup Menu” of the display (see
section “Reconfigurable multifunction
display” in this section).
Activation
Turn the knurled ring A-fig. 51to
2A:
in this way, the automatic activation of
the side/taillights and dipped beam
headlights is simultaneously enabled ac-
cording to outside brightness.
With lights switched on automatically
and in the presence of a switching off
control by the sensor, the main beams
will be switched off first and a few sec-
onds after also the sidelights.Deactivation
As a result of the sensor control, the
dipped beam headlights will switch off
and, after a few seconds, sidelights will
switch off too. The sensor is not able
to detect the fog presence, under this
condition lights shall therefore be
switched on manually.
Failure warnings
On certain versions headlight sensor fail-
ure is shown by the instrument panel
warning light
1, whereas on other ver-
sions a dedicated message is shown on
the display (see section “Warning lights
and messages”).