2006 Alfa Romeo 156 wheel

GETTING TO KNOW YOUR CAR
147
STOPPING THE CARTo stop the vehicle, simply release the ac-
celerator pedal and, if necessary, operate
the brake pedal.
Regardless of the gear engaged and of the
operating mode activated (MANUALor
CITY), the system automatically disen-
gages the clutch and downshifts gear.
If you intend to move off again without
having completely stopped the car, this way
the most suitable gear ratio for re-acceler-
ating will be available.
Stopping the vehicle, the system auto-
matically engages first gear (1). Though strongly inadvisable, if due to un-
foreseen circumstances when driving down-
hill the car is allowed to travel with the gear-
box in neutral (N), when the engagement
of a gear is requested, the system auto-
matically engages the best gear to allow
transmission of the torque to the wheels in
relation to the speed of the car.
Downhill with the gear engaged and the
accelerator released (if the vehicle is trav-
elling), if a certain pre-established speed is
exceeded, the system automatically en-
gages the clutch to provide adequate engine
braking.
Due to safety reasons, the Selespeed sys-
tem activates the buzzer when:
– clutch overheating occurs during vehicle
starting; in this case, it is necessary to
“force” moving off avoiding hesitations or
to release the accelerator and use the brake
pedal to park the vehicle if the car is on a
slope;
– the car moves in the opposite direction
to the gear engaged, (e.g.: vehicle moving
forward with reverse engaged); in this sit-
uation it is necessary to stop the vehicle and
keeping the brake pedal pressed, engage
the gear correctly.Still for safety reasons, when the vehicle
is stationary, with the engine started and
gear (1), (2) or (R) engaged, the system
activates the buzzer and shifts to neutral
(N) automatically when:
– there is no action on the accelerator
and/or brake pedal for at least 3 minutes;
– the brake pedal is pressed for over 10
minutes;
– the driver’s door is opened and the ac-
celerator and brake pedal are not pressed
for at least 1 second.

GETTING TO KNOW YOUR CAR
148
fig. 131
A0B0270m
OPERATIONThe gearbox can work in two operating
modes:
– the first is semiautomatic (MANUAL),
in which the driver directly decides when to
shift gear;
– the second is completely automatic
(CITY), in which the system decides di-
rectly when to shift gear according to the
type of driving.
The CITYmode can be selected by press-
ing the specific button CITYon the gearbox
lever knob; when this mode is selected, the
CITY sign appears on the display fitted on
rev counter.
SEMIAUTOMATIC OPERATION
(MANUAL) In the MANUALoperating mode the dis-
play on the rev counter shows the gear en-
gaged.
In this operating mode, the decision to
change gear is left to the driver who decides
the most appropriate moment.
The requests to change gear can take place
through:
– the control lever on the centre console
(A-fig. 130);
– the levers on the steering wheel
(fig. 131), which can be used only when
the vehicle speed exceeds 0.5 km/h.The MANUALoperating mode is set
when, with the CITYmode selected, the
CITYbutton (B-fig. 130) is pressed
again, excluding the previously selected
mode.fig. 130
A0B0271m

GETTING TO KNOW YOUR CAR
154
R - Reverse
Move the gearshift lever to Rwith the car
stationary, the engine idling and the brake
pedal pressed.
To prevent accidental engagements, mov-
ing the lever to this position is only allowed
raising the ring (A-fig. 138) placed un-
der the gearshift lever knob.
With the lever in position R the reversing
lights turn on and a beep is sounded for
safety reasons to indicate that reverse gear
has been engaged.
Before moving the lever, press the brake
pedal: the car must be stationary.
WARNINGWith the lever in position R,
reverse gear is not engaged if the vehicle
speed is above the established level. When
the car speed falls below this level, reverse
gear is engaged and remains engaged even
if the speed returns above the limit.
AUTOMATIC OPERATIONSelector lever
For automatic gearshifting, move the
gearshift lever to the right sector
(fig. 138) in one of the following posi-
tions:
P- park (the engine can be started)
R- reverse
N- neutral (the engine can be started)
D- automatic forward gear.
Raise the ring (A-fig. 138) placed un-
der the gearshift lever knob for shifting:
– from Pto Rand vice versa
– from Nto R.P - Park
To prevent accidental engagements, mov-
ing the lever to position Pis only allowed
raising the ring (A-fig. 138) placed un-
der the gearshift lever knob.
When the car is being parked, move the
lever to this position. A device in the gear-
box will lock the driving wheels.fig. 138
A0B0265m
Always pull the hand-
brake completely before
leaving the car.
Move the gearshift lever to posi-
tion P when getting out of the car
leaving the engine running.
WARNING

GETTING TO KNOW YOUR CAR
160
The failure to follow the
above instructions may
cause serious damage to
the automatic gearbox.
TOWING THE CARWARNINGFor towing the car, abide by
current local regulations. Also follow the in-
structions given in the chapter “In an emer-
gency”.
If the car needs to be towed, observe the
following recommendations:
– if possible, put the car on a rescue ve-
hicle;
– if this is not possible, tow the car by rais-
ing the driving wheels (front) from the
ground;
– if this, too, is not possible, the car may
only be towed for 50 km at a speed below
50 km/h.
The gearshift lever should be at position N
for towing.Cars with automatic gear-
box may be towed only for
short distances and at low
speed: if longer towing is neces-
sary, the driving wheels must be
raised to prevent the gearbox from
being pulled into rotation during
towing.
Do not start the engine
when the vehicle is being
towed.
WARNING

GETTING TO KNOW YOUR CAR
177
DIPPED BEAM HEADLIGHT
AIMING FOR LEFT-HAND/
RIGHT-HAND DRIVING(only for versions with gas
discharge headlights)
As regards cars equipped with gas dis-
charge headlights (xenon lamps)(optional
for versions/markets where applicable) with
very great lighting power, when passing
from a country with right-hand driving to one
with left-hand driving, or vice versa, it is nec-
essary to modify the orientation of the
dipped beam headlights, to optimize the il-
lumination of the road edge and avoid daz-
zling the vehicles coming from the opposite
direction.
To have this operation
carried out, contact Alfa
Romeo Authorized Ser-
vices.
When you go back to your
country of origin, remem-
ber to have the dipped beam head-
light orientation modified again.
WARNING
In the event of a failure, though being un-
able to rely on the antilock effect, there is
absolutely no adverse effect on vehicle brak-
ing performance in terms of braking capac-
ity.
If you have never used a car with ABS be-
fore, you are advised to learn how to use
it with a few preliminary trials on a slippery
surface, naturally under safety conditions
and fully adhering to the Highway Code of
the country concerned. You are also advised
to carefully read the following information.
The advantage of the ABS compared with
the conventional system is that it makes it
possible to maintain maximum vehicle han-
dling performance also in the case of hard
braking under grip limit conditions, avoiding
wheel lock.
Do not however expect the braking dis-
tance always to be reduced with the ABS
system: for example, on soft surfaces such
as gravel or fresh snow on slippery surfaces,
the distance might increase.
ABSThe car is fitted with an ABS system which
prevents wheel lock when braking, better
exploits wheel grip and keeps the vehicle
controllable within the limits of the available
grip also during emergency braking.
The driver can feel that the ABS is opera-
tional by a light pulsing of the brake pedal,
accompanied by noise.
This should not interpreted as malfunc-
tioning of the brakes, but it is the signal to
the driver that the ABS system is working:
it is the warning that the car is travelling at
the limit of grip an that, therefore, it is nec-
essary to adapt the speed to the type of road
on which you are travelling.
The ABS system is an additional part of the
basic braking system; in the event of a fault
it is disabled, leaving the braking system
in the same conditions as a car without ABS.

GETTING TO KNOW YOUR CAR
178
Braking on corners always requires the ut-
most caution, even with the help of the ABS.
The most important piece of advice, how-
ever, is the following:Following these instructions you will be
in a condition to obtain peak braking per-
formance at all times.
WARNINGCars fitted with ABS must
only be fitted with wheel rims, tyres and
brake linings of the type and brand approved
by the Manufacturer.
The braking system is completed by the
electronic control braking distribution system
called EBD(Electronic Braking Force Dis-
tributor) which distributes the braking action
through the ABSsystem control unit and
sensors.
In the event of a system
fault, with lighting up of
the
>
warning light on the instru-
ment cluster (together with the
message + symbol shown by the
display), have the vehicle checked
immediately by Alfa Romeo Au-
thorized Services, driving slowly
to be able to regain full system
performance.
WARNING
When the ABS cuts in and
you feel the pedal pulse, do
not reduce the pressure, but keep
the brake pedal firmly pressed
with no fear; this way you will
stop in the shortest possible space,
compatibly with the conditions of
the road surface.
WARNING
The car is fitted with an
electronic brake distributor
(EBD). If the
>
and
x
warning
lights, where required, come on at
the same time (together with the
message + symbol shown by the
display) when the engine is run-
ning, there is an EBD system fault;
in this case, violent braking may
lock the rear wheels too early, with
the possibility of skidding. Drive
extremely carefully to the nearest
Alfa Romeo Authorized Services to
have the system checked over.
WARNING
In order to be able to exploit as far as pos-
sible the possibility of the antilock system
in the case of need, it is wise to follow a few
pieces of advice:
The ABS exploits the avail-
able grip in full, but it can-
not increase it; therefore, caution
is required on slippery surfaces,
without running unnecessary risks.
WARNING
If the ABS cuts in, it means
that the grip limit between
the tyres and the road surface has
been reached: it is necessary to
slow down and adapt driving to
the grip available.
WARNING

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).