2006 Alfa Romeo 159 engine

122
SAFETY
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LIGHTS AND
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The car can be equipped with the
T.P.M.S. (Tyre Pressure Monitoring Sys-
tem). This system consists of a radio-fre-
quency sensor, installed on each wheel
(on the rim inside the tyre) that sends
pressure information to the control unit.IMPORTANT NOTES
Failure indications will not be stored and
therefore will not be displayed when
turning the engine off and on again. If
failure persists, the control unit will send
warning indications to the instrument
panel only after a few seconds when the
car is moving.
Tyre pressure should be checked with
tyres cold. Should it become necessary
for whatever reason to check pressure
with hot tyres, do not reduce pressure
although it is higher than the prescribed
value but repeat the check when tyres
are cold (see section “Wheels” in sec-
tion “Technical Specifications”).
TYRE PRESSURE MONITORING SYSTEM -
T.P.M.S. (where provided)
The T.P.M.S. does not
exempt the driver from
checking tyre pressure, includ-
ing the space-saver spare
wheel (where provided) at
regular intervals.
WARNING
T.P.M.S. cannot indicate sudden tyre
pressure drops (e.g.: tyre burst). In this
event, brake the car cautiously and
avoid sudden steering.
The T.P.M.S. system requires special
equipment. Consult Alfa Romeo Autho-
rized Services to know what type of ac-
cessories are compatible with the sys-
tem (wheels, wheel caps, etc.). Using
other accessories could cause system
malfunctioning. Due to inflation valve
special characteristics, use only tyre re-
pair sealants approved by Alfa Romeo;
other sealants could cause system mal-
functioning.

125
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DIESEL ENGINES
If the outside temperature is very low,
the diesel thickens due to the formation
of paraffins and could clog the diesel fu-
el filter.
In order to avoid these problems, dif-
ferent types of diesel are distributed ac-
cording to the season: summer type,
winter type arctic type (mountains/cold
areas).
If refuelling with diesel fuel not suitable
for the current temperature, mix diesel
fuel with DIESEL MIXadditive in the
proportions stated on the can, putting
first the antifreeze in the tank and then
the diesel fuel.
DIESEL MIXshall be added to diesel
fuel before the due to cold take place.
Adding it later will be worthless.
Topping up with diesel fuel not comply-
ing with EN590 European Norm might
make it necessary to replace the filter
more frequently than indicated in the
Service schedule.
AT THE FILLING
STATION
IMPORTANTRefuelling shall always
be performed with engine off. Failing to
observe this precaution could cause the
gauge to provide wrong indications.
Should this occur, to restore proper in-
dication just have next refuelling with
the engine off. Otherwise contact Alfa
Romeo Authorized Services.
PETROL ENGINES
Use only unleaded petrol. To prevent er-
rors, the diameter of the fuel tank filler
is too small to introduce a lead petrol
pump filler. Use petrol with a rated oc-
tane number (R.O.N.) not lower than
95.
IMPORTANTAn inefficient catalyst
leads to harmful exhaust emissions, thus
contributing to air pollution.
IMPORTANT Never use leaded
petrol, even in small amount or in an
emergency, as this would damage the
catalyst beyond repair.
The car must only be
filled with diesel fuel for
motor vehicles, in com-
pliance with European Standard
EN590. The use of other prod-
ucts or mixtures may irrepara-
bly damage the engine with in-
validation of the warranty due
to the damage caused. In the
event of accidentally filling with
another type of fuel, do not
start the engine and empty the
tank. If the engine has been run
even for only a very short time,
in addition to the tank, it is al-
so necessary to drain out the
whole fuel circuit.

127
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The devices for curtailing diesel fuel en-
gine emissions are the following:
❒oxidising catalytic converter;
❒exhaust gas recirculation system
(E.G.R.);
❒ diesel particulate filter (DPF).
PROTECTING THE
ENVIRONMENT
The devices for curtailing petrol engine
emissions are the following:
❒ three-way catalytic converter;
❒ Lambda sensor;
❒ fuel evaporation system.
In addition, do not let the engine run,
even for a test, with one or more spark
plugs disconnected.
During normal service
the diesel particulate
filter (DPF) reaches high tem-
peratures. Do not therefore
park the car over inflammable
materials (grass, dry leaves,
pine needles, etc.): fire hazard.
WARNING

128
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Since this filter physically traps particu-
lates, it shall be cleaned (reclaimed) at
regular intervals by burning carbon par-
ticles. Reclaiming procedure is controlled
automatically by the engine control unit
according to the filter conditions and the
conditions of use of the car. During re-
claiming the following phenomena could
take place: idling slight increase, fan ac-
tivation, slight smoke increase, high ex-
haust temperatures. These situations
shall not be considered as faults and they
do not affect car performance and envi-
ronment.DIESEL PARTICULATE FILTER
(DPF)
The Diesel Particulate Filter is a me-
chanical filter, integral with the exhaust
system, that physically traps particulate
present in the exhaust gases of Diesel
engines.
The diesel particular filter has been
adopted to eliminate almost totally par-
ticulates in compliance with current /
future law regulations.
During normal use of the car, the engine
control unit records a set of data (e.g.:
travel time, type of route, temperatures,
etc.) and it will then calculate how much
particulates has been trapped by the fil-
ter.Diesel particulate filter
clogged
When the Diesel particulate filter is
clogged, the instrument panel warning
light
hwill turn on (on certain ver-
sions symbol
his displayed). In
this case keep the car running until
warning light
h(or symbol
h) turns off.

145
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SAFETY
DEVICES
MANUAL DEACTIVATION (where provided) OF PASSENGER’S
FRONT AIR BAG , KNEES AIR BAG (where provided) AND
PASSENGER’S FRONT SIDE BAG DRIVER’S AND
PASSENGER’S KNEES AIR
BAG (where provided)
Knees air bag consists of an instant-in-
flating cushion housed into a special
compartment provided for the purpose
under the steering wheel for the driver
fig. 16and into the lower part of the
dashboard for the passenger fig. 17,
to give further protection in the event of
frontal crash.
A0E0092mfig. 17A0E0079mfig. 16
Should it be absolutely necessary to car-
ry a child on the front seat, the pas-
senger’s front air bag, knees air bag
(where provided) and the side bag can
be deactivated. Deactivation/activation
shall be performed (with key removed
from ignition device) using the key
switch set on the right side of dashboard
fig. 18. You can reach the switch on-
ly if the door is opened. When the door
is open, the metal insert of the key can
be inserted and removed in both posi-
tions.IMPORTANTOperate the switch on-
ly when the engine is not running and
the ignition key is removed.
The key-operated switch has two posi-
tions:
❒passenger's front air bag and knees
air bag (where provided) and side
bag activated (ONposition
P):
warning light
Fon front ceiling light
panel off; it is absolutely prohibited
to carry a child on the front seat;
A0E0062mfig. 18

149
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SAFETY
DEVICES
GENERAL WARNINGS
If when fitting the key
into the ignition device,
the warning light
¬does not
turn on or if it stays on when
travelling (on certain versions
together with the message on
the display) there could be a
failure in safety systems; in
this event air bags or preten-
sioners could not trigger in
case of impact or, in a minor
number of cases, they could
trigger accidentally. Contact
Alfa Romeo Authorized Ser-
vices immediately to have the
system checked.
WARNING
Do not cover the back-
rest of front seats with
trims or covers that are not
suitable to be used with side
bags.
WARNING
Never travel with ob-
jects on your lap, in
front of your chest or with a
pipe, pencil, etc. between your
lips; injury may result in the
event of the air bag being trig-
gered.
WARNING
Always keep your
hands on the steering
wheel rim when driving, so
that if the air bag is triggered,
it can inflate without meeting
any obstacles which could
cause serious harm to you. Do
not drive with the body bent
forwards, keep the seat back
rest in the erect position and
lean your back well against it.
WARNING
If the car has been
stolen or an attempt to
steal it has been made, if it
has been subjected to vandals
or floods, have the air bag
system checked by Alfa Romeo
Authorized Services.
WARNING
Remember that with
the key fitted into the
ignition device and engine off,
the air bags may be triggered
on a stationary car if it is
bumped by another moving
car. Therefore, never seat chil-
dren on the front seat even
when the car is stationary. On
the other hand remember that
if the key is not fitted into the
ignition device, no safety sys-
tem (air bags or pretension-
ers) is triggered in the event
of an impact; in this case, fail-
ure to come into action cannot
be considered as a sign that
the system is not working
properly.
WARNING

151
SAFETY
DEVICES
WARNING
LIGHTS AND
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IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
DASHBOARD
AND
CONTROLS
CORRECT USE
OF THE CAR
C C
O O
R R
R R
E E
C C
T T
U U
S S
E E
O O
F F
T T
H H
E E
C C
A A
R R
ENGINE STARTING .............................................. 152
PARKING ........................................................... 155
USING THE GEARBOX ......................................... 156
CONTAINING RUNNING COSTS ............................. 157
TOWING TRAILERS.............................................. 159
SNOW TYRES .................................................... 162
SNOW CHAINS .................................................. 163
CAR INACTIVITY ................................................ 164

152
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CONTROLS
CORRECT USE
OF THE CAR
STARTING PROCEDURE FOR
PETROL VERSIONS
Proceed as follows:
❒ Ensure that the handbrake is up;
❒Put the gear lever neutral;
❒Fit the electronic key into the ignition
device to stop limit;
❒Press the clutch (or brake) pedal down
to the floor without pressing the ac-
celerator;
❒Press button START/STOPand re-
lease it as soon as the engine starts.
We recommend that
during the initial period
you do not drive to full
car performance (e.g.: excessive
acceleration, long journeys at
top speed, sharp braking, etc.).
Running the engine in
confined areas is ex-
tremely dangerous. The engine
consumes oxygen and pro-
duces carbon monoxide which
is a highly toxic and lethal gas.
WARNING
When the engine is
switched off never leave
the electronic key into the
ignition device to prevent point-
less current absorption from
draining the batter.STARTING PROCEDURE FOR
DIESEL VERSIONS
Proceed as follows:
❒Ensure that the handbrake is up;
❒Put the gear lever neutral;
❒fit the electronic key down into the
ignition device until it stops. The in-
strument panel warning light
m
will turn on;
❒Wait for the warning light mto
turn off. The hotter the engine is, the
quicker this will happen;
❒Press the clutch (or brake) pedal
down to the floor without pressing the
accelerator;
❒Press button START/STOPas soon
as warning light
mgoes out. If you
wait too long you will lose the ben-
efit of the work done by the glow
plugs. Release the button as soon as
the engine starts.
ENGINE STARTING
The car is fitted with an electronic engine
immobilising system. If the engine fails
to start, see paragraph “Alfa Romeo
CODE system” in section “Dashboard
and controls”.
IMPORTANTTampering with the ig-
nition device can cause unrequired steer-
ing lock.
IMPORTANT Fit completely the elec-
tronic key into the ignition device until
it locks into place.
IMPORTANT Never take the elec-
tronic key out of the ignition device while
the car is moving unless you have to car-
ry out an emergency removal (see para-
graph “Removing the electronic key from
the ignition device in an emergency”),
this ensures that the steering column lock
is deactivated while the car is moving
(e.g.: towing the car).