2005 Alfa Romeo 156 turn signal

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
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).

CAR MAINTENANCE
265
DIESEL FILTERDRAINING CONDENSATION
WATER
Water in the supply circuit
can seriously damage the
whole injection system and
cause malfunctions to engine oper-
ation. Should the warning lamp
c
turn on, available for the provid-
ed versions/markets, contact as
soon as possible the Alfa Romeo
Authorised Service for drainage op-
erations.
When the car is habitual-
ly driven in dusty areas,
the cleaner should be
changed at shorter intervals than
those given in the Programmed
Maintenance Schedule.Any attempt to clean the
air cleaner may cause se-
rious engine damage.
AIR FILTERThe air cleaner is connected to the tem-
perature and air flow sensors which send the
electrical signals needed for correct opera-
tion of the injection and ignition system to
the control unit.
It must therefore always be in perfect con-
ditions to ensure correct operation of the en-
gine, low consumption and exhaust emis-
sion levels.
If they are not carried out
correctly and with the due
precautions, the operations
involving cleaner replacement de-
scribed herein may compromise the
safety of the car.
This operation should be carried
out by Alfa Romeo Authorized Ser-
vices.

ALPHABETICAL INDEX
332
Roof bars/ski racks ...................... 292
Roof rack provision ....................... 174
Rubber hoses .............................. 272Safe driving ............................... 192
– before driving off ................... 192
– driving in the fog ................... 194
– driving in the rain ................... 194
– driving on snow and ice .......... 195
– driving with ABS .................... 195
– mountain driving .................... 194
– night driving .......................... 193
– when travelling ...................... 192
Safeguarding the environment ...... 187
Scheduled maintenance
programme .............................. 249
Seat belts ................................... 28
– carrying children safely ........... 35
– front and rear side belt
height adjustment .................. 31
– general instructions ................ 33
– maintenance ......................... 34
– pretensioners......................... 32
– rear central abdominal belt ..... 30
– use ...................................... 28
Seats (front and rear) ............ 21-23
Selespeed gearbox ....................... 141– automatic operation (CITY) ..... 150
– checking the oil level .............. 259
– failure signalling .................... 150
– moving off ............................ 146
– operation with the engine off ... 143
– parking the vehicle ................. 151
– semiautomatic operation
(MANUAL) ............................ 148
– signalling with the buzzer........ 151
– starting the engine ................. 145
– stopping the car ..................... 148
– system activation ................... 142
– towing the vehicle .................. 151
– turning the engine off ............. 145
– warnings .............................. 146
Side lights
– changing front bulbs ............... 226
– changing rear bulbs ............... 228
– switching on.......................... 48
Ski compartment ......................... 24
Snow chains................................ 202
Sound system ...................... 183-293
Sound system presetting
system ............................. 183
Spark plugs (technical data) .......... 305
Speedometer............................... 63
Spray jets – windscreen/rearscreen/
headlight .............................. 274
Starting the engine....................... 189
– emergency starting .......... 191-205
– ignition switch ....................... 17
– procedure for JTD versions ....... 190
– procedure for petrol versions .... 189
– switching off the engine .......... 190
– warming the engine ............... 190
Starting with an auxiliary battery ... 242
Steering system
– specifications ......................... 305
– steering wheel adjustments .... 25
Steering lock .............................. 18
Steering wheel
– adjustment............................ 25
Steering wheel levers ................... 48
Stop lights
– changing bulbs ...................... 228
Sunroof ...................................... 167
– emergency operation ............. 169
– sliding forwards/backwards..... 168
– raising to the quarterlight
position ............................... 168
Sun visors .................................. 166
Symbols .................................... 5-6