2007 Alfa Romeo 156 ESP

GETTING TO KNOW YOUR CAR
156
SPORT(button (A-fig. 139)
pressed):
This is selected when wanting to avail of
the vehicle’s peak performance for sporty
driving or on demanding routes.
Driving in the SPORTmode increases fuel
consumption.
WARNINGThe CITYor SPORTdri-
ving modes can be selected under any con-
dition (vehicle stationary or on the move).
WARNINGWhen the car is started with
a cold engine, the system selects the
SPORTdriving mode, even if the CITY
mode has been selected, until the engine
reaches normal operating temperature.
C/S
ICE( button (B-fig. 133) pressed):
This driving mode is recommended when
the road surface offers poor grip (snow, ice,
etc.). Moving off takes place in 2
ndgear.
The ICEdriving mode is available only with
the selector lever at D.
Moving the lever from D, the ICEmode
is automatically cut off.
WARNINGThe ICEdriving mode can
be engaged pressing the corresponding but-
ton also with the car on the move, provided
that the speed is below 45 km/h.
ICE
SELECTING THE DRIVING
MODESThe automatic gearbox for this car is con-
trolled electronically and includes the selec-
tion of three different driving modes, thereby
giving the best response in terms of driving
comfort, consumption levels, sporty perfor-
mance and travelling safety.
The three driving modes CITY, SPORT
and are selected by 2 buttons on the
centre console (fig. 139).
The button (A-fig. 139) selects the
CITYor SPORTfunctions, the button
(B-fig. 139) selects the mode.
With the ignition key at MAR, the driving
mode selected is indicated by the lighting
up of the corresponding word on the display
on the instrument cluster (rev counter):
CITY( button (A-fig. 139)
pressed):
This is used under normal operating con-
ditions; it gives preference to comfortable
driving and balanced consumption control
engaging gears at relatively low engine
speed.
C/S
ICE
ICE
C/SICE
fig. 139
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GETTING TO KNOW YOUR CAR
163
fig. 146
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Courtesy light (fig. 146)
(where required)
Lowering the passenger’s sun visor, the
courtesy light on the roof lining can be seen.
This light makes it possible to use the cour-
tesy mirror under conditions with dim light.
On Sportwagon versions there is also a
courtesy light under the driver’s sun visor.
Use switch (A) to turn it on and off, with
the ignition key at MAR.Rear roof light (fig. 147)
(except versions with sunroof)
In correspondence with each rear door
there is a light which turns on automatically
when a door is opened.
They are timed and work in the same way
as described for the front roof light.
They can be turned on and off by hand
pressing the transparent cover (A) on the
circular impression.Centre rear roof lamp (fig. 148)
(only versions with sunroof)
On the roof lamp there is a switch with
three positions.
When the switch (A) is in the central po-
sition (0) the roof lamp turns on automat-
ically when a door is opened.
Lighting up is timed and it works as de-
scribed for the front roof lamp.
Moving the switch to the right (position 1)
the roof lamp stays off all the time.
Moving the switch to the left (position 2)
the roof lamp stays on all the time.
WARNINGBefore leaving the car make
sure that the switch (A) is in the central po-
sition (0), so that the lamp goes out when
the doors are closed.
fig. 147
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fig. 148
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GETTING TO KNOW YOUR CAR
174
HEADLIGHTSLIGHT BEAM AIMINGWARNINGThe adjustment of the head-
lights is vital to your safety and comfort and
to that of other road users. The adjustment
of the headlights is also governed by precise
regulations. To guarantee both to yourself
and to the other drivers the best visibility
conditions when travelling with the head-
lights on, the vehicle must have its head-
lights properly adjusted.
Contact Alfa Romeo Authorized Services to
have the headlights correctly adjusted.
IMPORTANTOn the inside surface of
the headlight there could appear a slight
coat of fogging; this does not show a defect,
since it is a natural occurrence due to low
temperature and to the degree of humidity
in the air; it will soon disappear as soon as
the lights are turned on. The presence of
drops inside the headlight shows water seep-
age: refer to the Alfa Romeo Dealership.
ROOF RACK
PROVISIONThe car is set for mounting special roof
racks.
Roof racks, especially designed for this car,
must be fastened to pins (A-fig. 168) set
under the packing, as shown in the figure.
Strictly comply with the
regulations in force con-
cerning the maximum over-
all dimensions.
fig. 168
A0B0142m
After a few kilometres,
check that the fastening
screws are firmly tightened.
WARNING
Distribute the load evenly
and when driving, bear in
mind the increased sensitivity to
side wind.
WARNING

GETTING TO KNOW YOUR CAR
176
The electromechanical system to auto-
matically keep constant trim makes the
headlight tilt compensating device unnec-
essary.
The xenon lamps have very long life which
makes possible fault very unlikely.
If necessary, have the sys-
tem checked and repairs (if
any) made only by Alfa Romeo Au-
thorized Services.
WARNING
GAS DISCHARGE HEADLIGHTS(optional for versions/markets
where applicable)
The gas (xenon) discharge headlights op-
erate with a voltaic arc, in an ambient sat-
urated with pressure xenon, instead of the
glow filament.
The resulting illumination is sensibly higher
to that of conventional lamps, both for light
quality (clearer light) and for the width and
positioning of the illuminated area.
The advantages of better illumination can
be perceived (due to less eyesight fatigue
and greater orientation capacity for the dri-
ver, which in turn means higher driving
safety) especially in case of bad weather,
fog and/or insufficient road signs, thanks
to the better illumination of the side parts
of the visual field, normally obscured.The large increase of the side part illumi-
nation increases driving safety since it allows
the driver to better see the other users on
the edge of the road (pedestrians, cyclists
and bikers).
The triggering of the voltaic arc requires a
very high voltage, while subsequent power
supply can take place at a low voltage.
The headlights achieve their top luminos-
ity approx. 15 seconds after they are
switched on.
The intense light produced by this type of
headlights requires the use of an automatic
system to keep headlight trim constant and
avoid dazzling the vehicles coming from the
opposite direction in case of braking, accel-
eration or when carrying loads.

GETTING TO KNOW YOUR CAR
179
If the
x
low brake fluid
warning light comes on (to-
gether with the message + symbol
shown by the display), stop the car
immediately and contact the near-
est Alfa Romeo Authorized Ser-
vices. Indeed, any leak of fluid
from the hydraulic system com-
promises the effectiveness of both
the conventional brake system and
the system with antilock system.
WARNING
The turning on of the
>
warning light (together
with the message + symbol shown
by the display) with the engine
running normally indicates an ABS
system fault. In this case the brak-
ing system preserves its effec-
tiveness, without however making
use of the antilock device. Under
these circumstances, the EBD sys-
tem may fail to give top perfor-
mance. In this case, too, you are
recommended to contact Alfa
Romeo Authorized Services imme-
diately, driving in such a way as to
avoid abrupt braking, to have the
system checked.
WARNING
VDC AND ASR
SYSTEMS(where required)VDC SYSTEM (VEHICLE
DYNAMICS CONTROL):
GENERALThe VDC is an electronic vehicle stability
control system which, acting on the torque
and braking the wheels in a differentiated
manner, helps to bring the car back to the
correct course in the event of loss of grip.
While travelling the car is subjected to lat-
eral and longitudinal forces that may be
controlled by the driver up to when the
tyres offer adequate road-holding; when
this falls below the minimum level, the car
starts to deviate from the course required
by the driver.
Above all on rough surfaces (such as cob-
bles, or due to the presence of water, ice
or soil), changes in speed (when accelerat-
ing or braking) and/or course (bends or the
need to avoid obstacles) can cause the tyres
to lose grip.When the sensors detect the conditions
that would lead to skidding, the VDC system
acts on the engine and brakes generating
a stabilising torque.
The system performance
levels, in terms of active
safety, should not induce the dri-
ver to run pointless and unjustified
risks. Driving conduct should al-
ways be suited to the conditions of
the road surface, vision and traf-
fic. The responsibility for road
safety is always and anyway the
vehicle driver’s concern.
The VDC system helps the driver
to keep control of the car in the
event of loss of tyre grip.
The forces induced by the VDC sys-
tem to control the lack of stability
of the car always and anyway de-
pend on the grip between the tyre
and the road surface.
WARNING

GETTING TO KNOW YOUR CAR
180
The heart of the VDC system is the VDC
control unit which with the data supplied by
the sensors installed on the car, calculates
the centrifugal forces generated when the
car is cornering. The yawing sensor detects
the rotations of the car around its own ver-
tical axis. The centrifugal forces generated
when the car is cornering are detected by
a highly sensitive lateral acceleration sensor.
The stabilising action of the VDC system is
based on calculations made by the
system’s electronic control unit which
processes the signals received from the
steering wheel rotation, lateral acceleration
and individual wheel rotation sensors. These
signals allow the control unit to recognise
the manoeuvre the driver intends to do
when turning the steering wheel.
The control unit processes the information
received from the sensors and is therefore
capable of detecting the position of the car
and comparing it with the trajectory the dri-
ver would like to follow instant by instant.
In the event of a discrepancy, the control
unit chooses and commands the most suit-
able action to bring the car back to the re-
quired course within a fraction of a second:
braking one or more wheels at a different
braking force and, if necessary it reduces the
power transmitted by the engine. The corrective actions are changed and con-
trolled continuously until the car returns to
the required course.
The action of the VDC system considerably
increases the active safety of the vehicle un-
der many critical situations and it is partic-
ularly useful also when the road surface grip
conditions change.
For the VDC, ASR and ABS
systems to work correctly,
the tyres must be of the same
brand and type on all wheels, in
perfect conditions and above all of
the specified type, brand and size.
WARNING
During use of the compact
spare wheel, the VDC sys-
tem continues working. It should be
borne in mind that the spare wheel
is smaller than a normal tyre,
therefore its grip is lower than that
of the other tyres of the car.
WARNING
VDC SYSTEM OPERATIONThe VDC system turns on automatically
when the car is started and cannot be
switched off. It is however possible to cut
off operation of the ASR system pressing the
corresponding button on the centre console.
The main components of the VDC system
are:
– an electronic control unit which
processes the signals received from the var-
ious sensors and brings about the most ap-
propriate strategy;
– a sensor that detects the position of the
steering wheel;
– four sensors that detect the rotation
speed of each wheel;
– a sensor that detects rotation of the car
around the vertical axis;
– a sensor that detects lateral acceleration
(centrifugal force).

GETTING TO KNOW YOUR CAR
182
EOBD SYSTEMThe EOBD (European On Board Diagnosis)
system fitted in the car conforms with the
98/69/EC (EURO 3) Directive and the
2001/1/EC Directive, level B (EURO4) for
2.0 JTS, 2.0 JTS Selespeed and JTD 20V
Multijet versions.
This system continuously monitors the
components of the vehicle related to emis-
sions; it also indicates, when the warning
light
U
comes on on the instrument panel
(together with the message + symbol
shown by the display) that the components
in question are in poor conditions.
The objective is the following:
– to keep under control the efficiency of
the system;
– to indicate when a malfunction causes
an increase in the emissions beyond the
threshold established by European regula-
tions;
– to indicate the need to replace the de-
teriorated components.
The system also has a diagnostic connec-
tor, which can be interfaced with adequate in-
struments, that enables the error codes stored
in the control unit to be read, together with
a series of specific parameters concerning the
operation and diagnosis of the engine.This check can also be made by the traf-
fic control agents.
If, when the ignition key
is turned to MAR, the
U
warning light does not
come on or if, when driving, it
lights up and emits a fixed light or
a flashing one (together with the
message + symbol shown by the
display), contact an Alfa Romeo
Authorized Service Station as soon
as possible. The operation of the
U
warning light can also be
checked by means of special equip-
ment available to the traffic con-
trol officers. Comply with the reg-
ulations in force in country where
you drive your car.
WARNINGAfter the problem has beel
resolved, to completely check the system,
the Alfa Romeo Authorized Services must
carry out tests on a test bench and, if nec-
essary, road tests that could be long.
WARNING LIGHT ON
INSTRUMENT PANELWhen the ignition key is turned to MAR,
the dial warning light
á
comes on but must
go out after a few seconds.
If the warning light does not go out, or if it
stays on (together with the message + sym-
bol on the display and the coming on of the
ASR button led) when the vehicle is running,
contact Alfa Romeo Authorized Services.
The flashing of the warning lamp when the
vehicle is running indicates the actuation of
the VDC system.
VDC system failure warning
In the event of a failure the VDC system
disengages automatically and the
á
warn-
ing light on the instrument cluster turns on
glowing steadily (together with the message
+ symbol shown on the display and the com-
ing on of the ASR button led).
In the event of a VDC system failure the
car behaves like a vehicle not fitted with this
system: in any case it is advisable to con-
tact Alfa Romeo Authorized Services as soon
as possible.

GETTING TO KNOW YOUR CAR
187
ENVIRONMENTAL
PROTECTIONThe design and construction of the vehi-
cle have not only been developed with the
traditional aspects of performance and
safety in mind, but also take into account
the increasingly pressing problems tied to
protecting the environment.
The choice of materials, techniques and
particular parts are the result of work which
has made it possible to drastically reduce
the harmful effects on the environment and
guarantee respect for the severest interna-
tional norms.USE OF NON-TOXIC
MATERIALSNone of the components of the vehicle con-
tains asbestos. The padding and the climate
control system do not contain CFCs which
are held to be responsible for the depletion
of the ozone layer.
The colouring agents and the corrosion in-
hibitors used on the nuts, screws and bolts
do not contain cadmium any more, which
could pollute the atmosphere or water tables.
PARKING SENSORS
(WHERE PROVIDED)(optional for versions/markets
where applicable)
The parking system detects and informs
the driver (through an intermittent acoustic
signal) about the presence of obstacles in
the rear part of the car (fig. 179). ACTIVATIONThe sensors are automatically activated
when the reverse gear is engaged.
The sound produced by the acoustic alarm
becomes continuous when the distance be-
tween the car and the obstacle is less that
30 cm.
ACOUSTIC SIGNALWhen the reverse gear is engaged an in-
termittent acoustic signal is automatically
activated.
The acoustic signal:
– raises with the reduction of distance be-
tween the car and the obstacle;
– becomes continuous when the distance
between the car and the obstacle is less that
30 cm and stops if the distance raises.
– is constant if the distance is unvaried.
If this situation takes place for side sensors,
the signal is stopped after about 3 seconds
to prevent sound indications when per-
forming manoeuvres near walls.fig. 179
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