2007 Alfa Romeo 159 technical specifications

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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).

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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.

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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).

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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.

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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.

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AIR DISTRIBUTION
SELECTION
Front seat Two-zone/
Three-zone configuration
Pressing buttons (front controls)
N/O/˙you can manually choose
one of the 7 possible modes for air dis-
tribution inside the compartment:
˙Flow of air to the dashboard centre
and side outlets (passenger’s body).
O˙Splitting of the air flow between
the vents to the lower part of the
passenger compartment (warmest
air) and the dashboard centre and
side outlets and the rear outlet
(coolest air).
OAir flow towards the front and rear
lower part of the passenger com-
partment. This type of distribution al-
lows heating of the passenger com-
partment in the shortest time by
proper setting of the temperature.
NSplitting of the air flow between
Owindscreen and front side window
demisting/defrosting vents and the
lower part of the passenger com-
partment. This type of air distribu-
tion allows satisfactory heating of
the passenger compartment while
preventing possible misting of the
windows.
NAir flow to the windscreen and front
side window vents to demist or de-
frost them.
N˙Splitting of the air flow between
the central/side dashboard vents,
rear vents and windscreen and
side window defrosting/demisting
vents. This type of air distribution
allows satisfactory ventilation of
the passenger compartment while
preventing possible misting of the
windows. With compressor off, the system will
check whether outside temperature is
higher or lower/same as the set one:
❒if outside temperature is lower than
the set one, the system will operate
regularly also with compressor off;
❒if outside temperature is higher than
the set one, the system will not be
able to keep the required condition,
the set temperature values will then
start to flash on the display.
Temperature detection (compressor off
and outside temperature higher than set
temperature) is activated each time the
electronic key is fitted into the ignition
device.
Operation of the cli-
mate control compres-
sor is necessary for cooling
and dehumidifying the air; it is
advisable to keep this function
always on, to prevent window
misting problems.
WARNING

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N˙Splitting of the air flow between
Oall vents.
Rear seat Three-zone
configuration controls
Pressing buttons
N/O(rear controls)
you can manually choose one of the 3
possible modes for air distribution to the
rear side of passenger's compartment
NAir flow to the vents on the central
console (passengers’ body).
OAir flow towards the rear lower part
of the passenger compartment. This
type of distribution allows heating of the
passenger compartment in the shortest
time by proper setting of the tempera-
ture.
NSplitting of the air flow between
Othe vents to the lower part of the
passenger compartment (warmest air)
and the rear vents (coolest air).
To restore automatic air distribution con-
trol after a manual selection, press but-
tons AUTO (front controls) or AUTO (rear
controls).
AIR RECIRCULATION AND
AQS FUNCTION (AIR
QUALITY SYSTEM)
ON/OFF (where provided)
Inside air recirculation is controlled ac-
cording to the following operating log-
ics:
❒automatic control, indicated by but-
ton led “A”;
❒forced switching on (inside air recir-
culation always on), indicated by the
turning on of the circular led around
the button;
❒forced switching off (air recirculation
always off with air inlet from the out-
side), indicated by the turning off of
the circular led around the button.
With A.Q.S. (air quality sensor - where
provided), the operating logics becomes
sequential by pressing button
v.IMPORTANTThe inside air recircula-
tion system makes it possible to reach
the required heating or cooling condi-
tions faster. It is however inadvisable to
use it on rainy/cold days as it would
considerably increase the possibility of
the windows misting inside, especially
if the climate control compressor is off.
It is advisable to turn on the inside air
recirculation system in queues or tunnels
to avoid admitting polluted air from out-
side. The prolonged use of this function
should however be avoided, especially
with several persons on board, to avoid
the possibility of the windows misting
inside and to guarantee the required
fresh air inlet.

68
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POLLEN FILTER/ ACTIVATED
CARBON POLLEN FILTER
According to versions, the car can be fit-
ted with pollen filter or activated carbon
pollen filter (where provided). The filter
has the specific capability of admitting to
the passenger compartment purified air,
free from particles such as dust, pollen,
etc. The filtering action takes place un-
der all air inlet conditions and it is clear-
ly most effective with the windows shut.
Have the conditions of the filter checked
by Alfa Romeo Authorized Services at
least once a year, preferably at the on-
set of summer. If the car is used main-
ly in polluted or dusty areas it should be
checked and if necessary replaced at
shorter intervals than specified in the
Service Schedule (see section “Car
Maintenance”). AQS function (Air Quality
System) (where provided)
The AQS function turns on automatical-
ly air recirculation when it detects the
presence of polluted air (e.g. in queues
and tunnels).
IMPORTANTWith AQS function on,
after a preset time with recirculation on,
the compressor will enable outside air
inlet (for about 1 minute) to change air
inside the passenger compartment, re-
gardless of outside air pollution level.
IMPORTANTThe AQS function is dis-
abled when the outside temperature is
cold to prevent window misting up. To
reactivate this function, press button
v. Led “A” on button vwill
turn on to indicate that the function is
on.
Failure to replace the fil-
ter may considerably re-
duce the effectiveness of
the climate control system up to
blocking the air flow from the
outlets and vents.
In certain weather con-
ditions (e.g. outside
temperature around
0°C) and with automatic air re-
circulation control on, mist may
form on the windows. In this
case press button vto
switch off recirculation and if
necessary press button + to in-
crease the flow of air to the
windscreen.
With the outside tem-
perature below -1°C the
climate control compres-
sor is unable to work. It is
therefore inadvisable to use the
inside air recirculation function
with low outside temperature
as windows may mist over
quickly.