sensor Lancia Thesis 2008 Owner handbook (in English)

190
If the sensors detect the conditions
which might cause car skidding, the
ESP system affects the engine and
the brakes by generating a torque
which makes the car recover the
right driving direction.
The system operations,
in terms of safety, should
not make the driver run
useless risks. The driving behav-
iour must always be appropriate,
according to the conditions of the
road bed, visibility and traffic.
Anyway, the driver is held
responsible for a safe driving.
The ESP system helps the driver
control the car in case of tyre grip
loss, however the forces used by
the system to control the car sta-
bility still depend on the grip
ratio between tyres and road bed.ESP SYSTEM OPERATION
ESP is automatically started when
the car is started and it cannot be
disengaged. On the contrary, it is
possible to exclude the ASR system
by pressing the related button on the
central console.
The ESP main components are the
following:
– an electric-hydraulic control unit
processing signals coming from the
various sensors and choosing the
most appropriate strategy by operat-
ing solenoid valves and the engine
control unit;
– a sensor detecting the steering
wheel rotation angle;
– 4 sensors detecting the rotation
speed of each wheel;
– a sensor detecting the car rota-
tion around a vertical axis;
– a sensor detecting side accelera-
tion (centrifugal force).The ESP core is a sensor, of aero-
nautic origin, detecting the car rota-
tions around its vertical axis.
Centrifugal forces generated when
the car is cornering are detected by a
high-sensitive side acceleration sen-
sor.
The ESP stabilizing action is based
on the signals coming from the steer-
ing wheel rotation sensors, from the
side acceleration sensors and the
wheel speed sensors, thus recogniz-
ing the driving direction selected by
the driver when turning the steering
wheel.
The control unit processes each
information coming from the sensors
and is able to recognize every single
moment of the car position and to
compare it with the direction the
driver is willing to follow. In case of
discrepancy, the control unit
instantly selects and controls the
most appropriate actions to make
the car recover the required direc-
tion: it brakes with a different inten-
sity one or more wheels and, if nec-
essary, reduces the power supplied
by the engine. Corrections are con-

multifunction display) warn the dri-
ver and invite him to resume speed
control.
IMPORTANTIf the Radar Cruise
Control is active and the speed of the
vehicle ahead falls below 30 km/h, a
sound signal with message “RADAR
CRUISE CONTROL NOT ACTI-
VATED” on the multifunction display
warn the driver to resume speed con-
trolTherefore, the Radar Cruise Control
does not ensure control when you are
driving in a queue; the driver must
therefore halt the car and start it off
after stopping in a queue, and he
must also switch on the speed control
function every time
IMPORTANT NOTES
CONCERNING THE RADAR
CRUISE CONTROL
When driving with the Radar Cruise
Control on, its regular operation could
be affected by certain situations.
The system operation could be in-
fluenced in the following cases:If the vehicle picked by the car fit-
ted with Radar Cruise Control leaves
the radar sensor detection range, the
system could no longer be able to de-
tect it and therefore it will speed up
the car or pick another vehicle run-
ning ahead (fig. 145).
If a vehicle enters the area between
the car fitted with Radar Cruise Con-
trol and the picked vehicle (fig. 146),
the system could not be able to con-
trol braking and it will therefore warn
the driver to take control of the car.
203
fig. 145
L0A0348b
fig. 146
L0A0349b

206
The driver will be warned by a spe-
cial display message when the system
is deactivated because the lens is
dirty.In this case, clean the sensor protec-
tion lens, shown in fig. 150with a wet
cloth; do not use dry, rough or hard
cloths. Should the dirty lens message
stay on after cleaning, contact a Lan-
cia Dealership.
If the Radar Cruise Con-
trol went off due to exces-
sive lens dirt, when
restarting the car a few km shall
be covered before switching the
system on again in order to let the
system check if previous condi-
tions (causing Radar Cruise Con-
trol turn off) have been removed.The sensor is built into
the front bumper: impacts
can therefore damage it.
IMPORTANTFailure to one of the
safety systems connected to the Radar
Cruise Control (ABS or ESP system)
will cause Radar Cruise Control fail-
ure indication.
The Radar Cruise Control
should be switched on
only when road and traffic
conditions allow the driver to drive
safely, that is, when the road is
straight and the surface is not slip-
pery, when the car is driven on a
freeway or motorway, and when
traffic flows smoothly. Do not use
the device when driving in urban
areas or when traffic is heavy.
fig. 154
L0A0330b

PARKING SENSOR
The parking sensor provides dis-
tance information to the driver when
the car moves near obstacles placed
in front of and behind it.
The information on the presence
and distance of obstacles is sent to
the driver by means of sound sig-
nals, the frequency of which
depends on the obstacle distance.
By integrating the direct visual
information with the sound signal
emitted by the system, the driver can
therefore avoid possible collisions.
208
The responsibility for
parking manoeuvres and
other dangerous manoeu-
vres always rests with the driver.
When performing such manoeu-
vres, always make sure that no
persons or animals stand in the
area where the car is to be
parked. The parking assist sys-
tem should be considered as an
aid to the driver; in any case,
greatest attention must be paid
when performing dangerous
manoeuvres, even at low speed.
The system front and rear sensors
are activated automatically when
engaging reverse with the ignition
key at MAR. Disengaging the
reverse gear will turn the rear sen-
sors off; front sensors will stay on
until 15 km/h speed is exceeded to
allow concluding the parking
manoeuvre.Front sensors can be switched on
by pressing button A(fig. 155)
placed on the central console in
front of the gear lever; when the
front sensors are on, warning light
Blights up on the button. To
switch the sensors off, press button
Aagain.
When the sensors are on, the sys-
tem starts sending out sound sig-
nals from the front or rear buzzers
as soon as an obstacle is detected;
the signal frequency increases as
the obstacle gets nearer. When the
obstacle is at a distance of less than
30 cm, a continuous sound is emit-
ted. Depending on the position of
the obstacle (in front or behind),
the sound will be emitted from the
corresponding buzzer (front or
rear). The sound signal will imme-
diately stop if the distance from the
obstacles increases. The tone cycle
remains the same if the distance
measured by the central sensors
does not change; however, if this
condition occurs with side sensors,
the signal will be interrupted after
about 3 seconds, to avoid, for
instance, sending out signals in
case of parking manoeuvres along
walls.
fig. 155
L0A0016b

SENSORS
The system detecting the distance
from obstacles uses 4 sensors housed
in the front bumper (fig. 156) and 4
sensors housed in the rear bumper
(fig. 157).To ensure proper opera-
tion of the parking assist
system, it is essential that
the sensors placed on bumpers
are always free from mud, dirt,
snow or ice. When cleaning the sen-
sors, take the greatest
care not to scratch or
damage them; to this regard, do
not use dry, rough or hard cloths.
Sensors must be washed with
clean water, to which car sham-
poo can be added, if necessary. In
car-wash stations that use high-
pressure or steam-jet hydraulic
cleaning machines, clean the sen-
sors fast by keeping the nozzle at
a distance of at least 10 cm.
fig. 156
L0A6019b
fig. 157
L0A6020b
When the bumper needs
re-painting or the sensor
area needs touching-up
with paint, contact a Lancia
Dealership only. Incorrect appli-
cation of paint could adversely
affect the parking sensor opera-
tion.
209

210
fig. 158
LOA6021b
Sensor operating range
The sensors allow the system to
monitor the car’s front and rear
parts.Their position covers the middle
and side areas of the car’s front and
back (fig. 158).Obstacles placed in the middle area
are detected at a distance of less
than approx. 0.9 m (front) and 1.50
m (rear).

211
Obstacles placed in side areas are
detected at a distance of less than
0.6 m.
Rear sensors are automatically
switched on by removing the trailer
cable plug.FAULT INDICATIONS
The system control unit checks all
the system components every time
the ignition key is turned to MAR.
Then, the sensors and their respec-
tive electrical connections are con-
stantly monitored during system
operation.
Parking assist system faults are sig-
nalled by the lighting of symbol t
on the multifunction display, togeth-
er with message “PARKING SEN-
SOR FAULT”.
In case of fault signals, stop the
car, shut the engine off, then try to
clean the sensors, making sure that
you are not close to ultrasound-
emitting sources (e.g. truck air
brakes or pneumatic hammers). If
the cause of the operation anomaly
has been remedied, the system fully
resumes its functions and the fault
symbol on the multifunction display
goes out, together with its respective
warning message. Rear sensors are auto-
matically switched off
when the trailer’s electric
cable plug is inserted into the car
tow hitch socket.TOWING A TRAILER

212
If, on the contrary, the warning
lamp remains on, go to a Lancia
Dealershipto have the system
checked even if the system keeps on
working. In fact, if the fault detected
by the control unit does not affect
the operation of the system, the lat-
ter keeps on working and the mal-
function is stored in the memory so
as to be detected by the Lancia
Dealershipduring a subsequent
check.
GENERAL NOTES
When parking your car, always pay
the greatest attention to the obsta-
cles that could be situated above or
below the sensors. In fact, objects
situated at close range in the car’s
front or rear parts could, under cer-
tain circumstances, not be detected
by the system and, therefore, dam-
age your car or be damaged them-
selves.Moreover, signals sent by the sen-
sors can be altered by damaged sen-
sors, by accumulation of dirt, snow
or ice on the sensors, or by ultra-
sound systems (e.g. truck air brakes
or pneumatic hammers) being oper-
ated nearby.INTERIOR
EQUIPMENT
FRONT CEILING LIGHT
(fig. 159)
This ceiling light includes a central
light and two courtesy lights.
To switch the central light on man-
ually, press button A; to switch it
off, press the same button again.
The light will light up and go out
gradually. If the ceiling light has
been switched on by means of the
button, it will automatically go out
after about 15 minutes after the
engine has been shut off (by turning
key to STOP).
fig. 159
L0A0098b

228
OPENING FROM THE OUTSIDE
WITH THE KEY (fig. 193)
The boot lock is electrified: press
buttonAon the tailgate to open it.
In an emergency (battery run down
or electrical system failure), the tail-
gate can be opened by fully turning
counterclockwise the key in the lock
and exerting at the same time a
slight pressure on the lower edge of
the number plate holder to reduce
the opening effort.
IMPORTANTIf the boot was
opened using the key, at closing the
automatic function will be deacti-
vated. To restore the automatic
function press button A.OPENING BY MEANS OF THE
REMOTE CONTROL
The tailgate can be opened from
the outside by pressing button A
(fig. 194) on the remote control,
even when the electronic alarm is on.
When the electronic alarm is on,
boot opening is accompanied by
double flashing of direction indica-
tors; boot closing is accompanied by
one flashing.
IMPORTANTIf the boot is opened
with the key when the electronic
alarm is on, the latter will not be
deactivated.If the electronic alarm is on, both
the volumetric protection and the
boot control sensor will be switched
off, and the system will emit (except
for versions of certain markets) two
beeps.
fig. 193
L0A06022b
fig. 194
L0A0179b

243
Automatic dynamic beam adjust-
ment device
Bi-Xeno headlights require, due to
produced brilliancy, an automatic,
dynamic beam adjustment system.
This system is managed by an elec-
tronic control unit that controls the
actuators mounted on each dipped
beam headlight. Actuator control
depends on the processing of the sig-
nals from two orientation sensors.
This automatic dynamic beam
adjustment system provides the fol-
lowing advantages:
– it avoids dazzling the vehicles
coming from the opposite direction
– it stabilizes the illuminated area
so as to improve active safety.Headlight beam adjustment con-
trol unit
The control unit calculates the
instant car trim, by comparing the
signals from the orientation sensors.
A “correction” signal is sent to the
actuators to adapt light beam orien-
tation to the calculated car trim.
To avoid oscillation of the anti-
dazzling beam in case of particular
road surfaces (paved surfaces, dirt
roads, etc.) or abrupt movements of
the car caused by the driver (clutch
disengagement, gear change, etc.),
the control unit reduces the number
of corrections to be made on the
light unit.Fault indication
Anomalies in the operation of one
or several system components are
signalled by the lighting of symbol
6on the multifunction display,
together with message “HEAD-
LAMP INCLINATION ADJUST-
MENT SYSTEM FAULT”.
IMPORTANTIn case of faults,
contact a Lancia Dealership.
In case of component anomaly or
voltage drop, the system controls in
any case system operation according
to the following logic:
– faulty front sensor: trim calcula-
tion is made by replacing the voltage
value read on the faulty sensor with
a stored, fixed value
– faulty rear sensor: the system is
switched to the safety operation
mode and keeps the headlights in a
preset position of maximum lower-
ing allowed by the light beam.