2008 Lancia Thesis sensor

The climate control system can be
deactivated also by the rear control
panel, when operating: press repeat-
edly or keep pressed button 7(fig.
122) until all the fan bars on the dis-
play turn off and message OFFis
displayed.
To exclude the rear control panel,
press again button REAR; the but-
ton led turns off and the front-seat
passenger’s controls are operating
again.
Air recirculation on/off button
(3 fig. 121)
The air recirculation function is
controlled according to three strate-
gies:
– automatic operation (button left
led on);
– forced ventilation on (recircula-
tion always on), the right led on the
button will come on;– forced deactivation off (recircula-
tion always off, air taken from the
outside), both leds on the button will
go off.
The three conditions are obtained
by pressing the air recirculation but-
ton3in sequence.
When the air recirculation function
is automatically controlled by the
system, the left led on the air recir-
culation button is turned on, while
the right led is on or off according to
the actual recirculation conditions
(on or off).
During automatic operation, the
recirculation function is automati-
cally switched on when the pollution
sensor detects the presence of pollut-
ed air, e.g. in cities, queues, tunnels
and during windscreen wiper opera-
tion (due to the characteristic smell
of alcohol). In addition, if the compressor is on
and the outside temperature is over
5 °C, to prevent air polluted by
exhaust gases getting inside the pas-
senger compartment during stops,
the system stops air recirculation
when the car speed is lower than 6
km/h. When the car speed returns
over 12 km/h, the system restores
the previous conditions.
After using the air recirculation
function for a long time (over 15
consecutive minutes), the system
automatically stops it for safety rea-
sons, thus letting air be changed.
When air recirculation manual
control is set (button left led off),
messageFULLon the display is off.
157

162
SUPPLEMENTARY
HEATER
(where provided)
The supplementary heater can
work with the engine off or on and it
allows the following:
– to heat the engine coolant before
start up
– to reduce the engine warming up
time after cold starting
– to warm up the passenger com-
partment before departure
– to remove ice or condensate from
the windows.
Using the heater in winter has the
following advantages:
– to reduce engine wear
– to reduce polluting emissions
– to improve comfort during dri-
ving and stops
– to improve safety.The supplementary heater function
is useful to integrate the engine
coolant warming up during driving
in order to reach and keep the opti-
mal working temperature of the pas-
senger compartment heater in the
quickest way, especially if the cli-
mate is extremely cold.
The system is composed of:
– a heating unit
– an electric pump for the engine
coolant circulation
– an exhaust pipe with muffler
– an electric pump metering the
fuels
– a fuel delivery pipe
– a sensor for outside air tempera-
ture.The system is connected to the car
through the engine cooling system,
the fuel system and the electric sys-
tem. The coolant coming out from
the engine is conveyed to the heater
and made flow in the circuit by an
electric pump. The heater burner is
supplied with the car fuel taken
directly from the tank by means of
an electric pulse pump and then
conveyed to the appropriate system
pipe. The heater control unit sup-
plies directly both electric pumps
(fuel and coolant), activates and
checks the heater functions.
The supplementary heating system
works both with the engine running
and the engine stationary. These two
conditions determine the type of sys-
tem operating mode:
– when the engine is stationary the
supplementary heater can work in
“programmable heater” or “parked-
car heater” mode;

163
– when the engine is running the
system works only in “supplemen-
tary heater” mode.
Regardless of the operating mode,
the start up procedure for the sup-
plementary heater, once it has been
activated, is the following:
1- Fan activation for comburant
air, for at least 30 seconds, to venti-
late and oxygenate the combustion
chamber. The fan speed is progres-
sively increased until the average
operating value is reached.
2- After about 30 seconds, the
heater control unit activates the
electric pump metering the fuel and
the comburant air fan is deactivated
for at least 3 seconds, in order to
facilitate fuel burning. A spark plug
starts combustion inside the heater.
3- At this point, there is a com-
bustion stabilizing phase which lasts
around 15 seconds, during which
the fan speed is kept at average
level.4- In the following 50 seconds the
control unit makes the fan reach
nearly its highest speed.
5- Once combustion has stabilized,
the heater control unit deactivates
the plug and the fan reaches its
maximum speed.
6- From now on the plug is used
by the system as a combustion and
flame sensor.
7- Regardless of the operating
mode, the heater extinction proce-
dure is always based on the combus-
tion chamber ventilation for about
30 seconds, in order to eliminate
completely any combustion remain-
der.
IMPORTANTAfter switching the
system off, both automatically or
manually, it can be switched on
again (ON) only approx. 3 minutes
after or when the CONNECT mes-
sage “COOLING DOWN” disap-
pears from the display. IMPORTANTAlthough in a lesser
quantity the heater burns fuel as the
engine. Therefore, to prevent poi-
soning and suffocation the supple-
mentary heater shall never be turned
on, even temporarily, in confined
areas like garages and workshops
not equipped with exhaust fans.
IMPORTANTThe heater must
always be turned off during refu-
elling and at filling stations to pre-
vent the risk of explosions.
IMPORTANTDo not park the car
over flammable materials like paper,
grass or dry leaves: risk of fire.
OPERATION WITH ENGINE
STATIONARY
“Programmable heater” mode
With this operating mode, the sys-
tem heats the engine coolant and the
passenger compartment before
starting the engine, it keeps air recir-
culation closed and activates air dis-
tribution to the windscreen and the
floor by operating the passenger
compartment fan.

169
OPERATION
WITH ENGINE RUNNING
“Supplementary heater” mode
This operating mode integrates the
engine coolant warming up, immedi-
ately after start up or during driving,
to reach and keep the optimal work-
ing temperature of the engine and the
passenger compartment heater in the
quickest way.
This mode is activated automatically
by the climate control unit when the
following conditions occur at the same
time:
– ignition key at MAR
– engine running– coolant temperature lower than 30
°C
– the climate control unit detects
(according to sensor detected temper-
atures) that fast passenger compart-
ment warming is required.
This mode is automatically deacti-
vated when one of the following con-
ditions occurs:
– coolant temperature higher than
70 °C
– the heater control unit detects a
fault in the supplementary heater
– engine off. The batteries must be replaced with
new ones of the same type, available
at the usual sellers.
To replace batteries:
– remove the remote control cover
by pushing it in the arrow direction
indicated on the cover
– remove exhausted batteries and
take note of their position
– fit the new batteries with pole (+)
towards the remote control antenna
– fit down the cover.
Request for additional remote
controls
The heater receiver will acknowl-
edge up to three remote controls. To
order new remote controls, or to re-
place the original one, contact a Lan-
cia Dealership.

176
Automatic engagement
The parking brake is automatically
engaged whenever the engine is
turned off and afterwards it cannot
be disengaged even if button Ais
pressed. Only after turning the igni-
tion key to MARit is possible to dis-
engage the parking brake by press-
ing the same button.
The EPB will also engage automat-
ically when opening the driver’s door
with the engine running. In this way
the car is completely safe even when
the driver leaves it with the engine
running (to open the gate, the garage
etc.
The operation of the automatic
handbrake function procedure when
the engine stops or when the driver’s
side door is open, is disabled when
the car is running; should hence the
engine be stopped or the driver’s side
door be opened when the car is not at
a full standstill, to operate the hand-
brake, it is necessary to perform the
operation manually.Automatic disengagement
If a gear is engaged, the parking
brake is released automatically
when pressing the accelerator pedal
and (for manual transmission ver-
sions) releasing the clutch pedal at
the same time. The control unit with
built-in gradient sensor, will release
the brake gradually according to the
road slope, thus preventing jumping
or unrequired reverse movements.
This is very useful during uphill
starting: simply engage the parking
brake (if not previously engaged
automatically as described before)
and press the accelerator pedal
(releasing the clutch pedal at the
same time, for manual transmission
versions) without having to gradual-
ly release the lever as required with
traditional parking brakes.IMPORTANTIn certain cases, e.g.
the car is approaching an obstacle, it
could be necessary to disengage the
parking brake manually without
making use of the automatic func-
tion and to brake the car by the ser-
vice brake, as it is usually done on
cars equipped with the traditional
parking brake lever.
Deactivating the automatic
operation
When it is required to leave the car
parked with engine running and
parking brake on (e.g. in car wash
tunnels), press button Aafter open-
ing the driver’s door.
If it is necessary to deactivate the
parking brake automatic engage-
ment with the engine off in order to
move the car manually (e.g. in the
garage or in car wash tunnels), it is
possible to deactivate the related
function through the CONNECT
menu. Deactivation of automatic
operation must be made with the
key at MARand only with the car
stationary. Press the SETUP key,
select “Other setting”, deactivate the In order to guarantee the
automatic operation of the
handbrake, cut off the en-
gine or open the driver’s side door
only when the car is at a standstill.

184
If the accelerator pedal is pressed
rapidly, the gearbox selects the sporty
driving programme to meet the re-
quest for a higher car performance.
To disengage this function, release the
accelerator gradually.
If the accelerator pedal is pressed
more slowly, the economy programme
is automatically selected.
The electronic control unit is able
to recognize particular situations
like a curve, detected as a different
speed of front wheel instant rotation
through the ABS active sensors, thus
preventing shifting to the higher
gear until the engine revolution limit
is reached. Only with this condition
or at the end of the curve will it be
possible to shift gear. This strategy is
useful to improve the car balance
and to guarantee a prompt accelera-
tion when coming out of the curve,
since the car has already the right
gear engaged.Likely, during sudden braking, the
lower gear is engaged to exploit the
engine braking action at best. In
case of a curve, the new gear will be
engaged during slowing down before
the curve, therefore when coming
out of the curve it will not be neces-
sary to shift gear to accelerate.
Sporty driving on mixed roads is
recognized by the control unit
because the accelerator pedal is
released rapidly; if this condition is
detected, the gear selected is main-
tained even if the accelerator has
been released, without shifting to
higher gears, in order to increase the
engine efficiency for the following
acceleration.The gear electronic control unit is
able to recognize hills as a result of
the torque signals coming from the
engine on the basis of the car speed,
therefore it is able to eliminate use-
less gear shifts when the accelerator
is released (e.g. before cornering)
and to use only those gears required
to improve the driving comfort.
Likely, the control unit is able to
recognize slopes and to prevent
shifting to higher gears when the
accelerator is released, in order to
use the “exhaust brake” at best to
the advantage of the braking system
and the car control.
IMPORTANTThe “exhaust brake”
function and shifting to a lower gear
during braking is not activated when
the ABS is operating.
A longer gear (5
th) can be used
when the car is driving for long dis-
tances with constant high speed, but
limited engine rpm, thus reducing
driving noise and fuel consumption.
That is why, when a higher car per-

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