2007 Alfa Romeo 166 sensor

61
Windscreen wiper (fig. 72-73)
The lever can be moved to five different
positions corresponding to:
A- Stationary (off)
B- Intermittent.
With the lever in position B, turning the
ring (1-fig. 73) four possible intermit-
tent speeds are obtained (except versions
with rain sensor):
■= intermittent slow
■■= intermittent medium
■■■= intermittent medium-fast
■■■■= intermittent fast.
C- Continuous, slow
D- Continuous, fast
E- Fast, temporary (unstable position).
Operation in position Eis limited to the
time the lever is held in this position.
When the lever is released, it returns to
positionAautomatically stopping the
wiper.Rain sensor (fig. 72-73)
(optional for versions/markets where
applicable)
The rain sensor is an electronic device
coupled with the windscreen wiper and its
purpose is to automatically adapt the fre-
quency of the wiper strokes according to
the intensity of the rain during intermit-
tent operation.
All the other functions controlled by the
right-hand lever (switching the wiper off,
slow and fast continuous operation, fast
temporary operation, windscreen washer
and headlight washer) remain un-
changed.
The rain sensor is activated automatical-
ly moving the right-hand lever to position
(B) and its field of adjustment changes
gradually.Operating the windscreen washer with
the rain sensor activated (lever in position
B) the normal washing cycle is carried
out at the end of which the rain sensor
resumes normal operation automatically.
Moving the key to the STOPposition
the rain sensor is deactivated and the
next time the car is started (key in MAR
position) it is not reactivated even if the
lever is still in position (B). In this case to
activate the rain sensor, simply move the
lever to position (A) or (C) and then
back to position (B).
When the rain sensor is reactivated in
this way, the wiper performs at least one
stroke, even if the windscreen is dry, to
signal that the sensor has been reactivat-
ed.
The rain sensor is fastened to the wind-
screen inside the area cleaned by the
wiper and it controls an electronic control
unit, which in turn controls the wind-
screen wiper motor.
A0D0019m
fig. 73

62
At each start the rain sensor automati-
cally (in about 2 minutes) stabilises at a
temperature of about 40°C to eliminate
any condensation from the control surface
and prevent the formation of ice.
The rain sensor is capable of detecting
and adapting automatically to the pres-
ence of the following particular conditions
which call for different sensitivity:
– impurities on the control surface
(saline deposits, dirt, etc.)
– streaks of water caused by partial
wear of the windscreen wiper
– difference between day and night
(the human eye is more disturbed during
the night by a wet windscreen surface.Headlight washer (fig. 75)
(optional for versions/markets where
applicable)
These are operated when the low beam
headlights are on and the windscreen
washer is switched on. Windscreen washer (fig. 74)
The windscreen washer is operated by
pulling the lever towards the steering
wheel.
Keeping the lever pulled the windscreen
wiper is turned on continuously. When
the lever is released the wiper continues
for a few strokes and then stops or con-
tinues at the speed set.
A0D0020m
fig. 74
A0D0021m
fig. 75

67
PARKING SENSORS
(optional for versions/markets where
applicable)
The parking system detects and informs
the driver (through an intermittent a-
coustic signal) about the presence of ob-
stacles in the rear part of the car.
ACTIVATION
The sensors are automatically activated
when the reverse gear is engaged.
The sound produced by the acoustic alarm
becomes continuous when the distance be-
tween the car and the obstacle is less that
30 cm.
ACOUSTIC SIGNAL
When the reverse gear is engaged an in-
termittent acoustic signal is automatically
activated.
The acoustic signal:
– raises with the reduction of distance be-
tween the car and the obstacle;
– becomes continuous when the distance
between the car and the obstacle is less that
30 cm and stops if the distance raises.
– is constant if the distance is unvaried.
If this situation takes place for side sensors,
the signal is stopped after about 3 seconds
to prevent sound indications when per-
forming manoeuvres near walls.

75
Seat belts not fastened
When the ignition key is turned to
MARthe warning light turns on but it
must go out after approx. 15 seconds.
For versions/markets where applicable,
the warning light turns on permanently
when, with the key in the MARposi-
tion, the driver’s seat belt is not fastened
properly. This warning light comes on when the
brake pedal is pressed and the front
brake pads are found to be worn, have
them replaced as soon as possible. When
the ignition key is turned to MARthe
warning light comes on but must go out
after approx. 6 seconds.
IMPORTANT As the vehicle is fitted
with brake pad wear sensors for the front
wheels only, when these are replaced
check the back brake pads at the same
time.dAlfa Romeo CODE system
When the ignition key is turned to MAR
the warning light should come on and then
go out. If the warning lights stays on with
the key in the MARposition, it indicates
a possible failure: see “The Alfa Romeo
CODE system”.
IMPORTANT The turning on contem-
poraneously of warning lights and
indicates a failure of the Alfa Romeo
CODE system.
¢
¢

91
ADDITIONAL HEATER
(Optional, for diesel versions, where
applicable)
The additional heater makes it possible
to integrate heating of the engine coolant
fluid, immediately after starting the en-
gine and when travelling, to more quickly
reach and maintain the optimum operat-
ing temperature of the engine and pas-
senger compartment heater.
The device works completely automati-
cally and it is activated only when the en-
gine is running with an outside tempera-
ture of +5°C or less and a coolant fluid
temperature below 60°C.
When the coolant fluid reaches 61°C,
the electronic control unit reduces the
power of the burner and stops the heater
when a temperature of 72°C is reached,
reactivating it automatically when the flu-
id temperature falls below 60°C. Con-
versely, if after reducing the power of the
burner, the fluid temperature begins to
fall, the control unit cuts in to restore full
power.The system comprises:
– a fuel oil burner for heating the water
and a combustion gas exhaust silencer.
– A batching pump connected to the car
reservoir pipes to supply the burner.
– An electronic control unit for control-
ling burner adjustment.
– An outside temperature sensor.IMPORTANT The heater is fitted with
a thermal limiting device which cuts off
combustion in the event of overheating
due to lack/leaks of coolant fluid.
The heater is also protected by the auto-
matic fuel cut-off switch, which shuts off
the fuel in the event of a crash of a cer-
tain size: to see how this works see the
“automatic fuel cut-off switch” para-
graph.

1024PGSm
fig. 137
106
OPENING FROM INSIDE
(fig. 136)
To open from inside:
– With the vehicle stationary, press but-
ton (A) inside the glovebox.
Due to its position, this control cannot
be operated when the glovebox is key-
locked.
REMOTE CONTROL OPENING
(
fig. 137)
(optional for the versions/markets where
applicable)
The luggage compartment may be re-
mote opened by pressing the push-button
(A-fig. 137) on the key with metallic
insert (B), even when the electronic
alarm is ON (where installed).In this case the alarm disengages the
boot control sensor, the system (with the
exception of versions for certain markets)
sounds two beeps and the direction indi-
cators light up for about three seconds.
When the boot is closed again the con-
trol function is restored, the system (with
the exception of versions for certain mar-
kets) sounds two beeps and the direction
indicators light up for about three seconds.
574PGSm
fig. 136

115
Braking on corners always requires the
utmost caution, even with the help of the
ABS.
The most important piece of advice
however, is the following:WARNINGCars fitted with ABS must
only be fitted with wheel rims, tyres and
brake linings of the type and brand ap-
proved by the Manufacturer.
The braking system is completed by the
EBD (Electronic Brake Distributor) which
distributes the braking action through the
ABS control unit and sensors.
Following these instructions you will be
in a condition to obtain peak braking per-
formance at all times.
If the ABS cuts in, it
means that the grip limit
between the tyres and the road
surface has been reached: it is nec-
essary to slow down and adapt
driving to the grip available.
WARNING
In the event of a system
fault, with lighting up of
the
>warning light, have the ve-
hicle checked immediately by Au-
thorized Alfa Romeo Services, driv-
ing 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 space pos-
sible, compatibly with the condi-
tions of the road surface.
WARNING
The car is fitted with an
electronic brake distrib-
utor (EBD). If the
>andxwarn-
ing lights come on at the same time
when the engine is running, there
is an EBD system fault; in this case,
violent braking may lock the rear
wheels too early, with the possibil-
ity of skidding. Drive extremely
carefully to the nearest Authorized
Alfa Romeo Services to have the
system checked over.
WARNING

117
VDC AND ASR
SYSTEMS
(on request for versions/markets
where applicable)
VDC SYSTEM (VEHICLE
DYNAMICS CONTROL):
GENERAL
The VDC is an electronic vehicle stability
control system which, acting on the
torque and braking the wheels in a differ-
entiated 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
lateral 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
cobbles, or due to the presence of water,
ice or soil), changes in speed (when ac-
celerating 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 sys-
tem acts on the engine and brakes gener-
ating 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 safe-
ty is always and anyway the ve-
hicle 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