sensor Alfa Romeo 159 2008 Owner handbook (in English)

121
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
If a failure is indicated, stop the car, turn
the engine off and then clean the sen-
sors. Make sure to be far from possible
ultrasound sources (e.g.: truck pneu-
matic brakes or pneumatic hammers).
If failure cause has been eliminated the
system will resume regular operation
and warning
tand the corresponding
warning message will turn off.
If the warning light stays on, contact Al-
fa Romeo Authorized Services to have
the system inspected, although the sys-
tem keeps on working. If the failure de-
tected does not impair system operation,
the system keeps on working and fail-
ure is stored in order to be then detect-
ed by Alfa Romeo Authorized Services
at next inspection.
GENERAL WARNINGS
When parking, take the utmost care to
obstacles that may be set above or un-
der the sensors. Objects set close to the
car front or rear part, under certain cir-
cumstances are not detected and could
therefore cause damages to the car or
be damaged.
Indications sent by the sensors can be
altered by dirt, snow or ice deposited on
the sensors or by ultrasound systems
(e.g.: truck pneumatic brakes or pneu-
matic hammers) set nearby the car.
TOWING TRAILERS
Rear sensors are reactivated automati-
cally when removing the trailer cable
plug.
FAILURE INDICATIONS
The system control unit checks every
system component each time the key is
fitted into the ignition device. Sensors
and relevant electrical connections are
then constantly monitored during sys-
tem operation.
Sensor failure is indicated by turning on
of warning light
t(where provided)
on the instrument panel (on certain ver-
sions together with the message on the
display) (see section “Warning lights
and messages”).
Rear sensors operation
is deactivated automat-
ically when the trailer
electric cable plug is fitted into
the car tow hook socket.

122
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
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)
(optional for versions/
markets where applicable)
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.

123
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
If after repairing a punctured tyre with
the Fix&Go automatic kit and restoring
the initial conditions the flat tyre warn-
ing light continues to stay on, contact
Alfa Romeo Authorized Services.
Tyre pressure could change according to
outside temperature. For this reason the
T.P.M.S. system could temporarily indi-
cate low tyre pressure. In this event
check pressure with cold tyres and re-
store proper inflation values if required. If the car is fitted with T.P.M.S. system,
when changing a tyre, change also the
rubber seal of the valve and the fas-
tening ring of the sensor. Contact Alfa
Romeo Authorized Services.
Strong radio-frequency disturbances
could inhibit proper TPMS system oper-
ation. This condition is indicated by a
dedicated massage on the display. This
indication will go off automatically as
soon as the radio-frequency disturbance
ceases.If the car is fitted with T.P.M.S. system,
tyre and/or rim removal and refitting
operations involve special precautions;
to prevent damages or wrong sensor re-
fitting, contact Alfa Romeo Authorized
Services to have tyre and/or rim
changed.

124
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
In order to use the system properly, refer to the following table when you have to change wheels/tyres:
(*) Given as an alternative on the owner's manual and to be found in Lineaccessori Alfa Romeo.
(**) Not crossed (tyres shall remain on the same side).
Operation
–
Wheel change
with space-saver spare wheel
Wheel change
with snow tyres
Wheel change
with snow tyres
Wheel change
with others of different
size (*)
Wheel cross switching
(front/rear) (**)Sensor presence
–
NO
NO
YES
YES
YESFailure Indication
YES
YES
YES
NO
NO
NOAlfa Romeo Authorized
Services operation
Contact Alfa Romeo
Authorized Services
Repair damaged
wheel
Contact Alfa Romeo
Authorized Services
–
–
–

127
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
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.
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) (where
required).
EMERGENCY OPENING OF
THE FUEL FILLER CAP
In case of failure, the fuel filler cap can
be opened by pulling string set on the
right side of the boot fig. 110.
During normal service
the diesel particulate
filter (DPF) (where required)
reaches high temperatures. Do
not therefore park the car over
inflammable materials (grass,
dry leaves, pine needles, etc.):
fire hazard.
WARNING
A0E0130mfig. 110

165
SAFETY
DEVICES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
WARNING
LIGHTS AND
MESSAGES
W W
A A
R R
N N
I I
N N
G G
L L
I I
G G
H H
T T
S S
A A
N N
D D
M M
E E
S S
S S
A A
G G
E E
S S
LOW BRAKE FLUID/HANDBRAKE ON ..................... 167
BRAKE PAD WEAR ............................................. 167
SEAT BELTS NOT FASTENED ................................. 167
AIR BAG FAILURE................................................ 168
PASSANGER’S FRONT AIR BAGS DEACTIVATED ........ 169
ENGINE COOLANT HIGH TEMPERATURE.................. 169
ENGINE OIL HIGH TEMPERATURE .......................... 170
LOW ENGINE OIL PRESSURE/
EXHAUST OIL..................................................... 170
LOW BATTERY CHARGE ....................................... 170
INCOMPLETE DOOR LOCKING ............................... 171
BONNET OPEN ................................................... 171
BOOT OPEN....................................................... 171
INJECTION SYSTEM FAILURE/
EOBD SYSTEM FAILURE....................................... 171
CAR PROTECTION SYSTEM FAILURE/
STEERING LOCK INHIBITION................................. 172
ALARM FAILURE/BREAK-IN ATTEMPT
ELECTRONIC KEY NOT RECOGNIZED ...................... 172
POSSIBLE PRESENCE OF ICE ON THE ROAD............ 173
PRE-HEATING GLOW PLUGS/
PRE-HEATING GLOW PLUG FAILURE ....................... 173
WATER IN DIESEL FUEL FILTER ............................. 174
INERTIAL FUEL CUT-OFF SWITCHED ON ................. 174
ABS SYSTEM FAILURE......................................... 175
EBD SYSTEM FAILURE......................................... 175VDC SYSTEM .................................................... 175
HILL HOLDER FAILURE ........................................ 176
ASR SYSTEM (WHEEL ANTISKID SYSTEM) ............. 176
EXTERNAL LIGHTS FAILURE .................................. 176
BRAKE LIGHTS FAILURE ....................................... 177
REAR FOGLIGHTS ............................................... 177
FRONT FOG LIGHTS ............................................ 177
SIDE/TAILLIGHTS/FOLLOW ME HOME .................. 177
DIPPED BEAM HEADLIGHTS.................................. 177
MAIN BEAM HEADLIGHTS .................................... 177
LEFT-HAND DIRECTION INDICATOR ........................ 177
RIGHT-HAND DIRECTION INDICATOR ...................... 177
LIGHT SENSOR FAILURE........................................ 178
RAIN SENSOR FAILURE......................................... 178
PARKING SENSORS FAILURE ................................ 178
FUEL RESERVE – LIMITED CRUISING RANGE .......... 178
CRUISE CONTROL .............................................. 178
DIESEL PARTICULATE FILTER CLOGGED .................. 178
ANTIPINCH SYSTEM FAILURE ............................... 179
WINDSCREEN WASHER FLUID LOW LEVEL ............. 179
SPEED LIMIT EXCEEDED ..................................... 179
T.P.M.S. SYSTEM FAILURE ................................... 179
CHECK TYRE PRESSURE ...................................... 179
LOW INFLATION PRESSURE ................................. 180
TYRE PRESSURE UNSUITABLE FOR SPEED ............. 180

167
SAFETY
DEVICES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
WARNING
LIGHTS AND
MESSAGES
SEAT BELTS NOT
FASTENED (red)
The warning light turns on
glowing steadily when:
❒the driver's seat belt is not fastened
correctly;
❒the passenger's seat belt is not fas-
tened correctly, heavy objects are
placed on the passenger's seat;
❒unfastening the driver's or the pas-
senger's seat belt.
With car moving the warning light will
turn on flashing together with the buzzer
for a short time.
The warning light will then stay on glow-
ing steadily.
BRAKE PAD WEAR
(amber)
The warning light (where pro-
vided) turn on (on certain versions to-
gether with the message on the display)
if the front brake pads are worn; in this
case have them changed as soon as pos-
sible.
IMPORTANTSince the car is fitted
with wear sensors for the front brake
pads, when changing them, check also
the rear brake pads.
d
turns on when travel-
ling, check that the handbrake
is not engaged. If the warning
light stays on with handbrake
disengaged, stop the car im-
mediately and contact Alfa
Romeo Authorized Services.
WARNINGLOW BRAKE
FLUID
(red)
HANDBRAKE ON
(red)
Fitting the key into the ignition device
the warning light turns on, but it should
go off after few seconds.
Low brake fluid level
The warning light turns on (on certain
versions a dedicated message is dis-
played) when the level of the brake flu-
id in the reservoir falls below the mini-
mum level, due to possible leak in the
circuit.
Handbrake on
The warning light turns on when the
handbrake is on.
x

173
SAFETY
DEVICES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
WARNING
LIGHTS AND
MESSAGES
This cycle is performed only once when
the outside temperature read is lower
than or equal to 3°C and it can be re-
peated only when outside temperature
exceeds
6 °C and then falls down to 3 °C or be-
low.
IMPORTANTIn the event of outside
temperature sensor failure, the display
will show dashes instead of the value.PRE-HEATING
GLOW PLUGS
(diesel versions -
amber)
PRE-HEATING
GLOW PLUGS
FAILURE
(diesel
versions - amber)
Pre-heating glow plugs
Fitting the key into the ignition device
the warning light turns on and it will turn
off when glow plugs reach the preset
temperature. Start the engine immedi-
ately after warning light switching off.
IMPORTANTWith mild or hot ambi-
ent temperature, warning light stays on
for very short time.
m
POSSIBLE PRESENCE OF ICE
ON THE ROAD
When the outside temperature reaches
or falls below 3°C, the display will show
a warning message, symbol
√, and a
buzzer will sound to warn the driver of
the possible presence of ice on the road.
On certain versions, once the above
warning indication cycle is over or when
pressing briefly the button MENU:
– the displayed message goes off and
previously active screen is displayed
again;
– temperature indication stops flashing;
– symbol
√stays displayed at the bot-
tom right of the screen (until outside
temperature is lower than or equal to
6°C).

178
SAFETY
DEVICES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
WARNING
LIGHTS AND
MESSAGES
FUEL RESERVE –
LIMITEDCRUISING
RANGE(amber)
The warning light on the fuel level gauge
turns on when about 10 litres fuel are
left in the tank. On certain versions. the
display will show a warning message
when the cruising range is less than 50
km (or 31 mi).
If warning light
K
starts flashing when
travelling contact Alfa
Romeo Authorized Services.
CRUISE CONTROL
(where provided)
(green)
The warning light turns on (on certain
versions a dedicated message is dis-
played) when turning the the knurled
ring of the Cruise Control to
Ü.
LIGHT SENSOR
FAILURE
(where provided)
(amber)
The warning light (or as an alternative,
on certain versions, a symbol and a mes-
sage are displayed) turns on to indicate
a failure at the light sensor.
PARKING SENSOR
FAILURE
(where provided)
(amber)
The warning light (or as an alternative,
on certain versions, a symbol and a mes-
sage are displayed) turns on to indicate
a failure at parking sensors.
RAIN SENSOR
FAILURE
(where provided)
(amber)
The warning light(where provided) turns
on (on certain versions a message is dis-
played) when the rain sensor is failing.
1
u
t
K
Ü
DIESEL PARTICULATE
FILTER CLOGGED
(diesel versions)
(amber)
The warning light (or as an alternative,
on certain versions, a symbol and a mes-
sage are displayed) turns on when the
diesel particulate filter is clogged and the
driving conditions do not enable to ac-
tivate automatically the reclaiming pro-
cedure.
To enable the cleaning procedure, keep
the car running until the warning light
turns on (or, on certain versions, sym-
bol
hdisappears from the display).
h

216
SAFETY
DEVICES
WARNING
LIGHTS AND
MESSAGES
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX
CORRECT USE
OF THE CAR
DASHBOARD
AND
CONTROLS
IN AN
EMERGENCY
USERS FUSE AMPERE FIGURE
Water in diesel fuel filter sensor/flow meter F35 7.5 56
Brake light switch/central console control panel F35 7.5 56
Cruise Control F35 7.5 56
AQS sensor F35 7.5 56
Boot branch point/front door branch point power F36 20 56
Instrument panel branch point F37 7.5 56
Front headlight control unit/Power to control unit for gas-discharge
headights (Bixenon) (where provided) F37 7.5 56
Boot locking/unlocking gearmotor F38 15 56
EOBD system diagnostic socket F39 10 56
T.P.M.S. control unit F39 10 56
Mobile phone presetting F39 10 56
Alarm system control unit (where provided) F39 10 56
Climate control system F39 10 56
Heated rear window F40 30 56
Windscreen washer/rear window washer nozzle demister F41 7.5 56
Heated mirror demister F41 7.5 56
Brake branch point power (ABS/VDC) –
Steering angle branch point – Yawing sensor F42 7.5 56
Windscreen wiper/washer F43 30 56