check engine Alfa Romeo 156 2004 Owner handbook (in English)

GETTING TO KNOW YOUR CAR
114
Cooling adjustment
Proceed as follows:
– turn off inside air re-circulation (if on);
– turn knob (1) counterclockwise to re-
duce temperature;
– turn knob (4) counterclockwise to re-
duce the fan speed.
LOOKING AFTER THE SYSTEMDuring the winter the climate control sys-
tem must be turned on at least once a
month for about minutes.
Before summer, have the system checked
at Alfa Romeo Authorized Service.
AUTOMATIC
TWO-ZONE CLIMATE
CONTROL SYSTEMTo start the system (fig. 100):
– turn the knob rings to set the required
temperatures (driver’s side – passenger’s
side).
– press the
AUTO
button.
WARNINGThe climate control system
makes it possible to adjust the temperatures
required for the two sides with a maximum
difference of 7°C between the driver’s and
the passenger’s sides.
WARNINGThe climate control com-
pressor works only when the engine is run-
ning and the outside temperature is more
than 2°C.

GETTING TO KNOW YOUR CAR
134
This function is timed and switches off au-
tomatically after 20 minutes, or pressing the
button again; the function is also switched
off when the engine is stopped and will not
be switched on again the next time the en-
gine is started.
WARNINGThe system turns on
rearscreen heating automatically if the tem-
perature is below 3°C.
WARNINGDo not apply stickers on the
inside of the rearscreen over the heating fil-
aments to avoid damage that might cause
it to stop working properly.
WARNINGWhen reconnecting the neg-
ative battery cable after having disconnected
it, wait for 2 minutes before turning the key
to enable the climate control system to re-
set actuator strokes properly.
POLLEN FILTER This filter has the specific capability of com-
bining the mechanical filtering of the air with
an electrostatic effect so that the outside air
admitted to the passenger compartment is
purified and free from particles such as dust,
pollen, etc.
In addition to the above, it also effectively
reduces the concentration of pollutants.
The filtering action takes place under all
air inlet conditions and it is clearly most ef-
fective with the windows shut.
Have the conditions of the filter checked by
Alfa Romeo Authorized Services at least once
a year, preferably on the onset of summer.If the vehicle is used mainly in polluted
or dusty areas it should be checked and if
necessary replaced, at shorter intervals.
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 out-
lets and vents.

GETTING TO KNOW YOUR CAR
143
SYSTEM ACTIVATIONWARNINGOpening the driver’s door,
the Selespeed starts the hydraulic part of
the system to prepare it for the engine to be
started. This function (noted by the turning
of the electric pump) is deactivated after 10
openings/closings of the door that are not
followed by actual system activation using
the ignition key.
Turning the ignition key to MAR, all the
segments of the display (A-fig. 126), the
gearbox failure warning light (B-fig. 126)
and the word CITYlight up. After about one
second, the display indicates the gear en-
gaged (N, 1, 2, 3, 4, 5, R); from this mo-
ment, the Selespeed system accepts
gearshift commands.
WARNINGIf after 10 seconds the dis-
play segment do not display the gear en-
gaged or the failure warning light stays on,
turn the ignition key to STOPand wait for
the display to go off, then repeat the sys-
tem activation procedure. If the fault per-
sists, contact Alfa Romeo Authorized Ser-
vices
OPERATION WITH THE
ENGINE OFFWARNINGBefore operating the gear-
shift control lever, always check the gear en-
gaged on the display (N, 1, 2, 3, 4, 5, R).
When the engine is off and the vehicle is
stationary, it is possible to engage all the
gears.
With the vehicle stationary and with the
brake pedal pressed, requests to shift gear
are accepted onlyif they are carried out
through the control lever on the central con-
sole.To request gearshifting, in addition to keep-
ing the brake pedal pressed it is necessary to:
– to increase gear (+) (fig. 127) push
the lever “forwards” (if the car is in first gear
this shifts to second, if it is in second gear
it goes to third and so on up to fifth). If the
system is in neutral (N) or reverse (R) the
forward movement on the lever causes en-
gagement of first gear (1).
– to shift down (–) (fig. 127) push the
lever backwards (if the car is in fifth gear
it moves to fourth, if fourth gear is engaged
it shifts to third and so on down to first).
fig. 127
A0B0272m

GETTING TO KNOW YOUR CAR
146
WARNINGS– With the vehicle stationary and a gear
engaged, always keep the brake pedal
pressed until you decide to move off;
– in prolonged stops with the engine run-
ning it is advisable to keep the gearbox is
neutral;
– when the car is parked on a slope, do
not use the pick-up manoeuvre to keep the
vehicle stopped; use the brake pedal and
work on the accelerator pedal only when
you decide to move off;
– use second gear onlywhen necessary
to obtain better control of pick-up in low
speed manoeuvres;
– if, with reverse gear engaged, you need
to engage first gear or vice versa, shift gear
only when the car is completely stationary
and with the brake pedal pressed. This should not be considered as a fault as
it is part of the operating logic. For the same
reason, in the event of sticking on reverse,
the system commands partial clutch closing
to allow engagement of the gear; in this
case engagement of reverse gear (R) will
be less comfortable.
Moving off of the vehicle is obtained:
1) releasing the brake pedal;
2) gradually operating the accelerator
pedal.
The vehicle pick-up torque is higher the
more the accelerator pedal is pressed.
MOVING OFFWith the engine running and the vehicle
stationary, the gears that can be engaged
for moving off are only first (1), second (2)
or reverse (R).
To engage them it is possible to use the
control lever on the centre console, with the
brake pedal pressed, as the levers on the
steering wheel allow gear engagement only
over 0.5 km/h.
WARNINGReverse gear (R) can be en-
gaged from each of the following other ra-
tios: neutral (N), first gear (1) or second
gear (2). If the car is on the move, the re-
quest is not accepted; it is necessary to wait
for the car to be completely stopped and
then request reverse (R) again.
The driver is informed of the reverse gear
engaged condition by the intermittent sound
of the buzzer as well as by the display on
the rev counter.
WARNINGIf while shifting from reverse
(R)/first gear (1) to neutral (N)/first gear
(1) sticking occurs on the first gear, the sys-
tem automatically engages second gear
(2).
After a request to shift
gear with the vehicle sta-
tionary, before pressing the accel-
erator pedal to make the car start,
the driver must always check that
the gear engaged shown on the
display is the one required.
WARNING

GETTING TO KNOW YOUR CAR
150
AUTOMATIC OPERATION (CITY)The CITYautomatic operating mode is se-
lected pressing the button (A-fig. 132),
at the base of the gearshift lever.
In addition to the gear, the display on the
rev counter will show the word CITY.
The system decides directly when gearshift-
ing according to the engine running speed
and the driving style.
Quickly releasing the accelerator pedal, the
system does not engage a higher gear in or-
der to maintain an adequate level of engine
brake.
FAILURE SIGNALLINGFailures to the Selespeed gearbox are in-
dicated by the
t
(A-fig. 133) warn-
ing light on the instrument cluster.
When the system is turned on (turning the
ignition key to MAR), the warning light
should turn on glowing steadily for about
4 seconds and then turn off.
If the warning light stays on it means that
a fault to the gearbox has been detected; at
the same time a buzzer sounds intermit-
tently for 4 seconds to attract the driver's
attention.In the case of a fault to the gearshift lever,
the system automatically activates the au-
tomatic CITYmode to allow the car to
reach the nearest Authorized Alfa Romeo
Services to have the fault detected elimi-
nated.
In the event of faults to other components
of the gearbox, the system only allows the
engagement of certain ratios: first gear (1),
second (2) and reverse (R).
fig. 132
A0B0269m
fig. 133
A0B0383m
If the warning light
t
comes on, contact the Alfa
Romeo Authorized Services
as soon as possible to remove the
fault.In case of transmission
fault, contact the Alfa
Romeo Authorized Services as
soon as possible to check the sys-
tem.
WARNING

GETTING TO KNOW YOUR CAR
151
SIGNALLING WITH THE BUZZERThe buzzer is activated when:
– reverse gear (R) is engaged;
– the vehicle is parked with the gearbox
at neutral (N); this can be seen turning the
ignition key to STOP;
– clutch overheating takes place during
pick-up;
– the car moves in the opposite direction
to the gear engaged (e.g.: the car tends to
do downhill with reverse gear engaged);
– in the event of gearbox failure;
– the system has automatically engaged
neutral (N) after:•
there is no action on the accelerator
and/or brake pedal for at least 3 min-
utes;
•
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;
•
detection of a gearbox fault.
PARKING THE VEHICLETo park the car safely it is absolutely
necessaryto engage first gear (1) or re-
verse (R) and, when on a sloping road, also
engage the hand-brake.
Turning the engine off with the car facing
uphill and a gear engaged, it is absolutely
necessaryto wait for the display on the
rev counter to go off before releasing the
brake pedal, so that the clutch has innested
completely.
If the gearbox is in neutral (N) and you
want to engage a parking gear, it is neces-
sary to activate the system and engage the
gear (1) or reverse (R) with your foot on
the brake pedal.
TOWING THE VEHICLEWARNINGFor towing the vehicle, ad-
here to local regulations. Make sure that the
gearbox is in neutral (N) (checking that the
car moves when pushed) and proceed as for
towing a normal car with mechanical gear-
box following the instructions given in the
chapter “In an emergency”.
Should it be impossible to set to neutral,
do not tow the vehicle; contact Alfa Romeo
Authorised Services.
Do not start the engine
when towing the vehicle.
WARNING

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
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