2008 Alfa Romeo 166 engine

3 VERY IMPORTANT!
FUEL CAPACITY
Petrol engines:only use unleaded petrol with no less than 95 R.O.N.
Diesel engines:only refuel with diesel fuel conforming to the European specification EN590. The use of other products
or mixtures may irreparably damage the engine with invalidation of the warranty due to the damage caused.
K
STARTING THE ENGINE
Petrol engines:engage the handbrake; set the gearshift lever to neutral; fully depress the clutch without pressing the accel-
erator, then turn the ignition key to AV Vand release it as soon as the engine has started.
JTD engines:engage the handbrake; set the gearshift lever to neutral; fully depress the clutch without pressing the ac-
celerator; turn the ignition key to MARand wait for the
mwarning light to go off, then turn the ignition key to AV V
and release it as soon as the engine has started.
PARKING ON FLAMMABLE MATERIAL
While working, the catalyst develops a very high temperature. Do not park the car over grass, dry leaves, pine needles or
any other inflammable materials: risk of fire.


6 SYMBOLS
Special coloured labels have been attached near to or actually
on some of the components making up your Alfa 166.
These labels bear symbols that remind you of the precautions to
be taken as regards that particular component.
A list of the symbols to be found on your Alfa 166is
given below, with the name of the component to which it relates
at the side of it.
These symbols are divided into the following four categories:
danger, prohibition, warning and obligation.
DANGER SYMBOLS
Battery
Explosion.
Fan
May cut in automatically when the engine is off.
Expansion tank
Do not remove the cap when the coolant is boil-
ing.
Battery
Corrosive fluid.
Coil
High voltage.

OBLIGATION SYMBOLS
DIESEL
Diesel vehicle
Use only diesel fuel.
Battery
Protect your eyes.
Battery - Jack
See the Owner Handbook.
Expansion tank
Use only the recommended fluid; see table “Speci-
fications of fluids and lubricants”.
Windscreen wiper
Use only the recommended fluid; see table
“Specifications of fluids and lubricants”.
Engine
Use only the recommended lubricant; see table
“Specifications of fluids and lubricants”.
Unleaded petrol vehicle
Use only unleaded petrol with RON 95.
8

16
1035PGSm
fig. 5
THE ALFA ROMEO
CODE SYSTEM
To increase protection against attempted
theft, the car is fitted with an electronic
engine lock system (Alfa Romeo CODE)
certified in accordance with EC Directive
95/56 which is activated automatically
when the key is removed from the igni-
tion.
In fact the grip of each key contains an
electronic device which modulates the ra-
dio frequency signal transmitted when the
engine is started by a special aerial incor-
porated in the ignition switch.
This modulated signal is the “password”
by which the control unit recognises the
key and only in this condition can the en-
gine be started.
THE KEYS
The car is provided with the key (A-
fig. 4) with metal insert with power-as-
sisted opening, remote control for opening
the boot and remote control for unlock-
ing/locking the doors and electronic alarm
(where applicable). The key operates:
– the ignition
– door locks
– boot lock
– glovebox lock
– remote door locking/unlocking sys-
tem
– alarm system (optional for versions/
markets where applicable)
– deactivation of the passenger’s Air
bag.
IMPORTANT In order to ensure the
perfect efficiency of the electronic devices
contained inside the key, avoid exposing
it to direct sunlight.
A0D0143m
fig. 4

19
KEY BATTERY CHANGE
If pressing the remote control buttons
(AorB-fig. 7), the led (C-fig. 7)
(where required) gives only one brief
flash and the alarm system led (where
fitted) (A-fig. 8) on the dashboard s-
tays on glowing steadily for about 2 min-
utes (after turning off the alarm and with
the ignition switch off), it is necessary to
replace the battery with a new one of the
equivalent type to be found c/o normal
retailers.
To replace the battery, remove the plas-
tic lid (A-fig. 9), insert the new battery
according to the correct polarity and put
the lid back on.For further information contact Autho-
rised Alfa Romeo Services.
OPERATION
Each time the ignition key is turned to
theSTOPposition, the Alfa Romeo
CODE system deactivates the functions of
the engine electronic control unit.Each time the engine is started, turning
the key to the MARposition, the control
unit of the Alfa Romeo CODE system
sends a recognition code to the engine
control unit to deactivate the inhibition of
the functions.
The recognition code, which is crypted
and variable between over 4 billion com-
binations, is only sent if the system con-
trol unit has recognised the code sent to
it by the key, which contains an electronic
transmitter, through an aerial in the igni-
tion switch. Dead batteries consti-
tute a hazard for the
environment and must
be disposed of in the special con-
tainers as specified by the rela-
tive laws.
fig. 7
1011PGSm
fig. 9
1034PGSm
fig. 8
305PGSm

20
This condition is indicated by a brief
flash of the warning light (A-fig.
10) on the check panel.
If the code has not been recognised cor-
rectly, the Alfa Romeo CODE system
warning light (A-fig. 10) stays on
together with the EOBD/fuel supply-igni-
tion system failure warning light (B-fig.
10) .
In this case, you are recommended to re-
turn the key to the STOPposition and
than back to MAR; if the inhibition per-
sists, try again possibly with the other key
provided with the car. If it is still impossible
to start the car, carry out the emergency
starting procedure described herein and
turn to an Alfa Romeo Authorized Service.
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¢
¢IMPORTANTEvery electronic key has
its own code, which must be memorised
by the system control unit. To memorise
new keys, up to a maximum of seven,
apply solely to Alfa Romeo Authorized
Services taking with you all the keys in
your possession, the CODE card, a person-
al identity document and the car’s posses-
sion documents.
The codes of the keys
not provided during the
new memorising proce-
dure are erased from the memo-
ry. This is to ensure that any lost
or stolen keys can no longer be
used to start the car.
IMPORTANTThe Alfa Romeo CODE
warning light comes on when travelling
with the ignition key on MAR:
1) If the warning lamp lights up while
the car is moving, it means that the sys-
tem is running a self-diagnosis (e.g. due to
a voltage drop). The first time you stop y-
ou can test the system as follows: switch
the engine off by turning the ignition keytoSTOP; then turn the key back to
MAR: the warning lamp will light up and
should go out in the space of about one
second. If the warning lamp fails to go
out, leave the key at STOPfor more than
30 seconds and repeat the procedure de-
scribed previously. If the problem persists,
contact your Authorised Alfa Romeo Dealer.
2) If the warning lamp flashes it means
that the car is not protected by the immo-
biliser. Contact your Authorized Alfa
Romeo Code Dealer immediately and get
them to store the codes of all the keys in
the memory.
If after about 2 seconds
with the key in the
MAR position, the Alfa
Romeo CODE warning light turns
on again flashing at appr. half
second intervals, this means that
the code of the keys has not
been memorised, thus the car is
not protected by the Alfa Romeo
CODE system against attempted
theft. In this case, contact an Au-
thorized Alfa Romeo Service to
have the key codes memorised.
fig. 10
A0D0091m

21
IMPORTANTIn the case of fast start-
ing, turning the key directly from STOP
toAV V, the recognition code might not
be transmitted completely, preventing the
engine from starting: try again more
slowly.
IMPORTANTThe system is protected
by two fuses housed in the main fusebox
(see “If a fuse or relay blows” in the
chapter “In an emergency”).
EMERGENCY STARTING
If it is not possible to deactivate the en-
gine inhibitor with the ignition key, Alfa
Romeo Authorized Services can carry out
the emergency procedures using the code
of the CODE card, or, you may do this
yourself, following the procedure de-
scribed below.
IMPORTANTYou are advised to care-
fully read the entire procedure before car-
rying it out.If a mistake is made during the emer-
gency procedure, the ignition key should
be turned to the STOPposition and the
operations must be repeated from the s-
tart (point 1).
1) Read the 5-figure electronic code on
the CODE card.
2) Turn the ignition key to the MAR
position.
3) Fully depress the accelerator pedal
and keep it pressed. The EOBD/fuel sup-
ply-ignition system failure warning light
will come on for eight seconds ap-
proximately and will then go out; now re-
lease the accelerator pedal.
4) The warning light begins to
flash: after it has flashed for the same
number of times as the first digit on the
code of the card, press completely and
hold down the accelerator pedal until the
warning light comes on (for 4 sec-
onds) and then goes out again; now re-
lease the accelerator pedal.
5) The warning light will begin to
flash: after it has flashed for the same
number of times as the second digit on
the code of the CODE card, press com-
pletely and hold down the accelerator
pedal.
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6) Repeat this procedure in the same
way for the other digits on the CODE card
code.
7) After entering the last figure, keep
the accelerator pedal pressed. The warn-
ing light turns on (for four seconds)
and then goes off; now release the accel-
erator pedal.
8) A quick flash of the warning light
(for appr. 4 seconds) confirms that
the operation has taken place correctly.
9) Start the car turning the ignition key
from the MARposition to the AVV po-
sition without returning the key to the
STOPposition.
Conversely, if the warning light
stays on, turn the ignition key to STOP
and repeat the procedure starting from
point 1).
IMPORTANTAfter emergency start-
ing it is advisable to turn to an Alfa
Romeo Authorized Service, because the
procedure described must be repeated
each time the engine is started.
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22 ELECTRONIC ALARM
(optional for versions/markets where
applicable)
DESCRIPTION
The system certified in accordance with
EC Directive 95/56 comprises: transmit-
ter , receiver, control unit with siren and
volumetric sensors. The electronic alarm
is controlled by the receiver and it is
turned on and off through the remote
control incorporated in the key which
sends the crypted, variable code. The
electronic alarm monitors: unlawful open-
ing of the doors, bonnet and boot
(perimetral protection), operation of the
ignition key, battery and emergency key
cable cutting, the presence of moving
bodies in the passenger compartment
(volumetric protection) and operates the
central door locking system. Is also
makes it possible to cut off volumetric
protection and/or the siren.
IMPORTANTThe engine inhibitor
function is guaranteed by the Alfa Romeo
CODE system which is activated automati-
cally when the ignition key is removed
from the lock.
REMOTE CONTROL (fig. 11)
The remote control is incorporated in the
key and it is fitted with a button (A) and
a led (B); the button activates the con-
trol, the led flashes while the transmitter
sends the code to the receiver. This code
(rolling code) changes at each transmis-
sion.
IMPORTANTIf, when pressing the
push-button (A), the led (B) issues just a
short flash, replace the batteries as
shown in the previous paragraph.Request for additional remote
controls
The receiver can recognise up to 5 re-
mote controls.
If during the life of the car a new re-
mote control is needed for any reason
whatsoever, contact Alfa Romeo Autho-
rized services directly, taking with you the
CODE card, a personal identity document
and the car’s possession documents.
fig. 11
1013PGSm