2007 Alfa Romeo 156 engine

GETTING TO KNOW YOUR CAR
157
MANUAL OPERATING MODE,
Q-SYSTEM ACTIVATIONFor manual gearshifting, move the lever
to the left sector (fig. 140).
Moving the gearshift lever to the manual
sector is only possible from position D.
Passing to manual gearshift control is pos-
sible under all driving conditions; however,
the system will allow engagement only of
the gear consistent with engine rpm and the
current speed of the vehicle.
Gearshifting takes place as for a normal
manual gearbox.
STOPPING THE CARTo stop the car, simply press the brake
pedal, regardless of the position of the
gearshift lever.
fig. 140
A0B0263m
Moving the lever back to position Dthe
gearbox will resume automatic operation in-
stantly, engaging the ratio in accordance
with the driving characteristics and driving
mode selected.
When manual operation is
set (Q-System device) and
a high gear is engaged, to acceler-
ate rapidly, for example for over-
taking, it is necessary to shift to
a lower gear by hand, as for nor-
mal cars with mechanical gearbox.
WARNING
With the engine idling even
on level ground, if the
brake pedal is not kept pressed,
the car tends to move.
WARNING

GETTING TO KNOW YOUR CAR
158
1st2nd3rd4th
2nd2nd4th4th
Gear engaged Gear ratiomanually available
FAULT SIGNALLINGAutomatic gearbox faults are indicated by
the t
warning light (A-fig. 141) on
the instrument cluster as follows:
–warning light glowing steadily
= maximum automatic gearbox oil temper-
ature;
–warning light flashing= automatic
gearbox fault.
Turning the ignition key to MARthe warn-
ing light should turn on and go out after
approx. 4 seconds.
If the warning light stays on or turns on
during travelling, it indicates a gearbox fault
(flashing) or overheated gearbox oil (glow-
ing steadily).Warning light glowing steadily
If the warning light turns on and glows
steadily when the car is travelling, it indi-
cates that the gearbox oil has reached the
maximum established temperature.
The automatic control system provides an
emergency programme.
It is however advisable to stop the car,
move the lever to Por Nand let the engine
idle until the warning light goes out. Resume
driving without demanding high perfor-
mance from the engine.
If the warning light comes on again, it is
necessary to stop again with the engine
idling until it goes out again.
If the interval between one lighting up of
the warning light and the next is below 15
minutes, you are advised to stop the car,
turn off the engine and wait for the engine-
gearbox unit to cool down completely.
fig. 141
A0B0386m
Warning light flashing
The flashing of the warning light when trav-
elling indicates a fault in the automatic gear-
box.
The automatic control system provides an
emergency programme. Under these cir-
cumstances, you are advised to stop the car
and turn off the engine; in fact, the next
time the engine is started, the self-diag-
nostics system could cut off the fault which
will, however, be memorised by the elec-
tronic control device.
Conversely, if the fault remains (warning
light (A- fig. 141) flashing), it is neces-
sary to select the gears manually as if dri-
ving a car with mechanical gearbox, bear-
ing in mind that the only two speeds
available are the 2
ndand 4
thgear, as shown
in the table below:

GETTING TO KNOW YOUR CAR
159
If the indicator light re-
mains flashing, contact the
Alfa Romeo Authorized
Service Centers as soon as possi-
ble to remove the fault.
If a fault is indicated when the engine is
started, this means that the gearbox control
system had detected and memorised a fault
during the journey prior to switching the en-
gine off. In this case, too, contact Alfa
Romeo Authorized Services to have the au-
tomatic gearbox checked over.It is possible to engage reverse gear.
ACOUSTIC WARNINGThis comes into operation for about 18 sec-
onds when:
– the driver’s door is open and/or the en-
gine is off with the selector lever in a posi-
tion other than P;
– position R(reverse) is engaged.PUSH STARTINGStarting the car by pushing or towing is not
possible. In the event of an emergency,
when the battery is flat, start the car with
a suitable emergency battery, following the
instructions given in the chapter “In an emer-
gency”.
When driving with a faulty
gearbox, drive with the ut-
most care considering the restricted
performance levels (in terms of ac-
celeration and speed) the car can
offer.
WARNING
When travelling with a
faulty gearbox, the reverse
lock might not work: absolutely
never move the lever to position
R with the car on the move.
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
167
RADIO
TRANSMITTERS
AND CELLPHONESCellphones and other radio transmitters
(e.g. CB radios) cannot be used inside the
vehicle, unless you use a separate aerial
mounted outside the vehicle.
The transmission and reception efficiency
of this equipment may also be affected by
the shielding effect of the vehicle’s body.
SUNROOF(optional for versions/markets
where applicable)
The sunroof can only be operated when
the ignition key is in the MARposition.Do not open the sunroof
when snow or ice are on
the roof as this may dam-
age it.
The use of cellphones, CB
radios or similar inside the
passenger compartment (without
an outside aerial) produces electro-
magnetic RF fields; if these are am-
plified by the resonance inside the
passenger compartment, they may
not only result in a potential health
hazard, or poor functioning of the
electronic systems such as engine
control units, ABS/EBD control
units, etc., fitted to the vehicle, but
also put the safety of your vehicle
in jeopardy.
WARNING
Improper use of the sunroof
can be dangerous. Before
and while operating it, always
make sure that the passengers are
not exposed to the risk of harm
caused either directly by the sunroof
in motion or by personal items
drawn or knocked by it.
WARNING
When leaving the vehicle,
the ignition key should al-
ways be removed to avoid acci-
dents involving the sunroof which
could be inadvertently operated by
any passenger remaining in the ve-
hicle.
WARNING

GETTING TO KNOW YOUR CAR
173
– Press the safety lever (fig. 167) up-
wards.
– Raise the bonnet.
WARNINGBonnet raising is aided by
two gas springs. Do not tamper with these
springs and accompany the bonnet while
raising it.
fig. 167
A0B0576m
Before lifting the bonnet,
make sure that the wind-
screen wiper arms are not raised
from the windscreen.
WARNING
DANGER-SERIOUS INJURY.
When carrying out checks
or maintenance operations in the
engine compartment, take special
care not to bump the head on the
raised bonnet.
WARNING
If checks need to be carried
out in the engine compart-
ment when the engine is still
warm, keep away from the fan as
it could start up even when the key
is removed from the ignition. Wait
until the engine cools down.
WARNING
Scarves, ties and loose
clothing may be caught in
the moving parts.
WARNING
To close:
– lower the bonnet to approx. 20 cm from
the engine compartment, then let it drop.
Try lifting it to make sure that it is shut com-
pletely and not simply caught in the safety
position.
If the bonnet does not close properly, do
not push it down but open it again and re-
peat the above procedure.
For safety reasons the
bonnet shall always be
perfectly closed when travelling.
Always check for proper bonnet
locking. If the bonnet is left inad-
vertently open, stop the car im-
mediately and close the bonnet.
WARNING

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