2017 FIAT 500X brake sensor

ACTIVE SAFETY
SYSTEMS
The vehicle has the following active
safety systems:
ABS (Anti-lock Braking System);
DTC (Drag Torque Control);
ESC (Electronic Stability Control);
TC (Traction Control);
PBA (Panic Brake Assist);
HHC (Hill Hold Control);
DST (Dynamic Steering Torque);
ERM (Electronic Rollover Mitigation);
TSC (Trailer Sway Control).
For the operation of the systems, see
the following description.
ABS (Anti-lock Braking
System)
This system, which is an integral part of
the braking system, prevents one or
more wheels from locking and slipping
in all road surface conditions,
irrespective of the intensity of the
braking action, ensuring that the vehicle
can be controlled even during
emergency braking and optimising
stopping distances.
The system intervenes during braking
when the wheels are about to lock,
typically in emergency braking or
low-grip conditions, when locking may
be more frequent.
The system also improves control andstability of the vehicle when braking on
a surface where the grip of the left and
right wheels varies, or on corners.
The Electronic Braking Force
Distribution (EBD) system completes
the system allowing the brake force to
be distributed between the front and
rear wheels.
System intervention
The driver can feel that the ABS system
has come into action because the
brake pedal pulsates slightly and the
system gets noisier: this is entirely
normal with the system operating.
31) 32) 33) 34) 35) 36) 37)
DTC (Drag Torque
Control) SYSTEM
The DTC (Drag Torque Control) system
prevents the drive wheels from possibly
locking, which could happen, for
example, if the accelerator pedal is
released suddenly or in the case of a
sudden downshifting in conditions of
poor grip. In this conditions, the engine
braking effect could cause the drive
wheels to slip, resulting in a loss of car
stability. In these situations, the DTC
system intervenes, restoring torque to
the engine in order to conserve car
stability and increase car safety.
ESC (Electronic Stability
Control) SYSTEM
The ESC system improves the
directional control and stability of the
vehicle in various driving conditions.
The ESC system corrects the vehicle’s
understeer and oversteer, distributing
the brake force on the wheels
appropriately. The torque supplied by
the engine can also be reduced in order
to maintain control of the vehicle.
The ESC system uses sensors installed
on the vehicle to determine the
trajectory that the driver intends to
follow and compares it with the
vehicle’s effective trajectory. When the
real trajectory deviates from the desired
trajectory, the ESC system intervenes to
counter the vehicle’s understeer or
oversteer.
Oversteer: occurs when the vehicle is
turning more than it should according
to the angle of the steering wheel.
Understeer: occurs when the vehicle
is turning less than it should according
to the angle of the steering wheel.
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DST SYSTEM (Dynamic
Steering Torque)
The DST function uses the integration
of the ESC system with the electric
power steering to increase the safety
level of the whole vehicle.
In critical situations (braking on surfaces
with different grip conditions), through
the DST function the ESC system
controls the steering to implement an
additional torque contribution on the
steering wheel, to suggest the most
correct manoeuvre to the driver.
The coordinated action of the brakes
and steering increases the sensation of
safety and control of the vehicle.
53)
ERM (Electronic Rollover
Mitigation) SYSTEM
The system monitors the tendency of
the wheels to rise from the ground if the
driver performs extreme manoeuvres
like quick steering to avoid an obstacle,
especially in poor road conditions.
If these conditions occur, the system
intervenes on the brakes and engine
power to reduce the possibility that the
wheels are raised from the ground. It is
not possible to avoid tendency to roll
over if the phenomenon is due toreasons such as driving on high side
gradients, collision with objects or other
vehicles.
54)
TSC (Trailer Sway
Control) SYSTEM
The system employs a series of sensors
located on the vehicle to identify
excessive swerving of the trailer and
take the necessary precautions to
eliminate it.
To counteract the effect of trailer sway,
the system can reduce the engine
power and intervene on the wheels
involved. The TSC system activates
automatically once excessive sway of
the trailer is detected.
System intervention
When the system is active, the
warning light flashes on the
instrument panel, the engine power is
reduced and braking can be felt on the
individual wheels, following the attempt
to eliminate the swerving of the trailer.
55) 56)
WARNING
31)When the ABS intervenes and you feel
the brake pedal pulsating, do not reduce
the pressure, but hold it down firmly and
confidently; in doing so you will brake in the
shortest distance possible, depending on
the current road conditions.
32)To obtain the maximum efficiency of
the braking system, a bedding-in period of
about 500 km is needed: during this period
it is better to avoid sharp, repeated and
prolonged braking.
33)If the ABS intervenes, this indicates
that the grip of the tyres on the road is
nearing its limit: you must slow down to a
speed compatible with the available grip.
34)The ABS cannot overrule the natural
laws of physics, and cannot increase the
grip available according to the condition of
the road.
35)The ABS cannot prevent accidents,
including those due to excessive speed on
corners, driving on low-grip surfaces or
aquaplaning.
36)The capability of the ABS must never
be tested irresponsibly and dangerously, in
such a way as to compromise personal
safety and the safety of others.
37)For the correct operation of the ABS,
the tyres must of necessity be the same
make and type on all wheels, in perfect
condition and, above all, of the prescribed
type and dimensions.
38)The ESC system cannot alter the
natural laws of physics, and cannot
increase grip, which depends on the
condition of the road.
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DRIVING
ASSISTANCE
SYSTEMS
The vehicle can feature the following
driving assistance systems:
BSA (Blind Spot Assist);
FBC (Full Brake Control);
iTPMS (indirect Tyre Pressure
Monitoring System).
For the operation of the systems, see
the following pages.
BSA (Blind Spot Assist)
SYSTEM
The vehicle can be equipped with the
BSA (Blind Spot Assist) system for blind
spot monitoring. The BSA system uses
two radar sensors, located in the rear
bumper (one for each side - see
fig. 57 ), to detect the presence of
vehicles (vehicles, trucks, motorbikes,
etc.) in the rear side blind spots of the
vehicle.The system warns the driver about the
presence of vehicles in the detection
area by lighting up, on the relevant side,
the warning light located on the door
mirror fig. 58, along with an acoustic
warning.
When the vehicle is started the warning
light turns on to signal the driver that
the system is active.
Sensors
The sensors are activated when any
forward gear is engaged at a speed
higher than about 10 km/h, or when
reverse is engaged.
The sensors are temporarily deactivated
with vehicle at a standstill and the gear
lever in position P (Park - versions with
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automatic transmission), or with vehicle
at a standstill and electric parking brake
engaged (versions with manual
gearbox).
The detection area of the system
covers about a lane on both sides of
the vehicle (around 3 metres).
This area begins from the door mirror
and extends for about 6 metres
towards the rear part of the vehicle.
When the sensors are active the system
monitors the detection areas on both
sides of the vehicle and warns the
driver about the possible presence of
vehicles in these areas.
While driving the system monitors the
detection area from three different input
points (side, rear and front) to check
whether a signal needs to be sent to
the driver. The system can detect the
presence of a vehicle in one of these
three areas.
IMPORTANT The system does not
signal the presence of fixed object (e.g.
safety barriers, poles, walls, etc.).
However, in some circumstances, the
system may activate in the presence of
these objects. This is normal and does
not indicate a system malfunction.
IMPORTANT The system does not
warn the driver about the presence ofvehicles coming from the opposite
direction, in the adjacent lanes.
57)
Important
If a trailer is hitched to the vehicle, the
system must be manually deactivated
using the relevant menu, in order to
avoid false warnings.
For the system to operate correctly, the
rear bumper area where the radar
sensors are located must stay free from
snow, ice and dirt gathered from the
road surface.
Do not cover the rear bumper area
where the radar sensors are located
with any object (e.g. adhesives, bike
rack, etc.).
Rear view
The system detects vehicles coming
from the rear part of your vehicle on
both sides and entering the rear
detection area with a difference in
speed of less than 50 km/h with
respect to your vehicle.
Overtaking vehicles
If another vehicle is overtaken slowly
(with a difference in speed of less than
about 25 km/h) and this stays in the
blind spot for about 1.5 seconds, the
warning light on the door mirror of the
corresponding side lights up.If the difference in speed between the
two vehicles is greater than about
25 km/h, the warning light does not
light up.
RCP (Rear Cross Path detection)
system
This system helps the driver during
reverse manoeuvres in the case of
reduced visibility.
The RCP system monitors the rear
detection areas on both sides of the
vehicle, to detect objects moving
towards the sides of the vehicle at a
minimum speed between about 1 km/h
and 3 km/h and objects moving at a
maximum speed of 35 km/h, as
generally happens in parking areas.
The system activation is signalled to the
driver by means of a visual and acoustic
warning.
IMPORTANT If the sensors are covered
by objects or vehicles, the system will
not warn the driver.
Operating mode
The system can be activated/
deactivated by operating on the display
Menu, or via theUconnect™system
(for further information see the
dedicated Supplement).
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SAFETY

If atmospheric conditions are not the
real reason behind this message, check
if the sensor is dirty. It could be
necessary to clean or remove any
obstructions in the area illustrated in
fig. 59.
If the message appears often, even in
the absence of atmospheric conditions
such as snow, rain, mud or other
obstructions, contact a Fiat Dealership
for a sensor alignment check.
In the absence of visible obstructions,
cleaning the radar surface, by manually
removing the decorative cover trim,
could be required. Have this operation
performed at a Fiat Dealership.
IMPORTANT It is recommended that
you do not install devices, accessories
or aerodynamic attachments in front of
the sensor or darken it in any way, as
this can compromise the correct
functioning of the system.
Frontal collision alarm with active
braking
(where provided)
If this function is selected, the brakes
are operated to reduce the speed of the
vehicle in the event of potential frontal
impact
This function applies an additional
braking pressure if the braking pressureapplied by the driver does not suffice to
prevent potential frontal impact.
The function is active with speed above
7 km/h.
Driving in special conditions
In certain driving conditions, such as,
for example:
driving close to a bend;
vehicles with small dimensions
and/or not aligned in the driving lane;
lane change by other vehicles;
vehicles travelling at right angles to
the vehicle.
system intervention might be
unexpected or delayed. The driver must
therefore be very careful, keeping
control of the vehicle to drive in
complete safety.
IMPORTANT In particularly complex
traffic conditions, the driver can
deactivate the system through the
Uconnect™system.
Driving close to a bend
When tackling a wide bend, the system
may detect the presence of a vehicle in
front you, but not running on the same
driving lane fig. 61. In cases such as
these, the system may intervene.Vehicles with small dimensions
and/or not aligned in the driving
lane
The system cannot detect vehicles in
front of you but outside the range of the
radar sensor and may therefore not
react in the presence of small vehicles,
such as bicycles or motorcycles fig. 62.
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SAFETY

WARNING
57)The system is an aid for vehicle driving,
it DOES NOT warn the driver about
incoming vehicles outside of the detection
areas. The driver must always maintain a
sufficient level of attention to the traffic and
road conditions and for controlling the
trajectory of the vehicle.
58)The system is an aid for the driver, who
must always pay full attention while driving.
The responsibility always rests with the
driver, who must take into account the
traffic conditions in order to drive in
complete safety. The driver must always
maintain a safe distance from the vehicle in
front.
59)If the driver depresses the brake pedal
fully or carries out a fast steering during
system operation, the automatic braking
function may stop (e.g. to allow a possible
manoeuvre to avoid the obstacle).
60)The system intervenes on vehicles
travelling in the same lane. People, animals
and things (e.g. pushchairs) are not taken
into consideration.
61)If the car must be placed on a roller
bench for maintenance interventions or if it
is washed in an automatic roller washing
tunnel with an obstacle in the front part
(e.g. another car, a wall or another
obstacle), the system may detect its
presence and activate. In this case the
system must be deactivated through the
settings of theUconnect™system.
62)If the iTPMS system signals a pressure
decrease on the tyres, it is recommended
to check the pressure on all four tyres.63)The iTPMS does not relieve the driver
from the obligation to check the tyre
pressure every month; it is not even to be
considered a replacing system for
maintenance or a safety system.
64)Tyre pressure must be checked with
tyres cold. Should it become necessary for
whatever reason to check pressure with
warm tyres, do not reduce pressure even
though it is higher than the prescribed
value, but repeat the check when tyres are
cold
65)The iTPMS cannot indicate sudden tyre
pressure drops (e.g. if a tyre bursts). In this
case, stop the vehicle, braking with caution
and avoiding abrupt steering.
66)The system only warns that the tyre
pressure is low: it is not able to inflate
them.
67)Insufficient tyre inflation increases fuel
consumption, reduces the tread duration
and may affect the capacity to drive safely.
IMPORTANT
21)The system may have limited or absent
operation due to weather conditions such
as: heavy rain, hail, thick fog, heavy snow.
22)The section of the bumper before the
sensor must not be covered with
adhesives, auxiliary headlights or any other
object.
23)System intervention might be
unexpected or delayed when other vehicles
transport loads projecting from the side,
above or from the rear, with respect to the
normal size of the vehicle.24)Operation can be adversely affected by
any structural change made to the vehicle,
such as a modification to the front
geometry, tyre change, or a heavier load
than the standard load of the vehicle.
25)Incorrect repairs made on the front part
of the vehicle (e.g. bumper, chassis) may
alter the position of the radar sensor, and
adversely affect its operation. Go to a Fiat
Dealership for any operation of this type.
26)Do not tamper with nor carry out any
intervention on the radar sensor or on the
camera on the windscreen. In the event of
a sensor failure, contact a Fiat Dealership.
27)When towing a trailer (with modules
installed after purchasing the vehicle), a
vehicle or during loading manoeuvres on a
vehicle transporter (or in vehicle for
transport), the system must be deactivated
via theUconnect™system.
28)Do not wash with high-pressure jets in
the bumper lower area: in particular do not
operate on the system's electrical
connector.
29)Be careful in the case of repairs and
new paintings in the area around the
sensor (panel covering the sensor on the
left side of the bumper). In the event of a
frontal impact the sensor may automatically
deactivate and display a warning to indicate
that the sensor needs to be repaired. Even
without a malfunction warning, deactivate
the system operation if you think that the
position of the radar sensor has changed
(e.g. due to low-speed frontal impact as
during parking manoeuvres). In these
cases, go to a Fiat Dealership to have the
radar sensor realigned or replaced.
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the accelerator; when you release the
pedal, the vehicle goes back to the
speed stored previously.
When travelling downhill with the device
active, the vehicle speed may slightly
exceed the set one.
IMPORTANT Before pressing the SET +
or SET – buttons, the vehicle must be
travelling at a constant speed on a flat
surface.
SPEED INCREASE
Once the electronic Cruise Control has
been activated, the speed can be
increased by pressing button SET +.
SPEED DECREASE
With the device activated, the speed
can be decreased by pressing button
SET–.
RECALLING THE SPEED
For versions with automatic
transmission operating in D mode (Drive
- automatic), press and release the RES
button to recall the previously set
speed.
For versions with manual gearbox or
automatic transmission in Autostick
(sequential) mode, before recalling the
previously set speed you should
accelerate until getting close to it, then
press and release the RES button.
DEACTIVATING THE
DEVICE
Lightly pressing the brake pedal or
pressing the CANC button deactivates
the electronic Cruise Control without
deleting the stored speed.
The Cruise Control may be deactivated
also by applying the electric parking
brake (EPB) or when the braking
system is operated (e.g. operation of
the ESC system).
DEACTIVATING THE
DEVICE
The electronic Cruise Control is
deactivated by pressing button A
fig. 99 or bringing the ignition device to
STOP.
WARNING
120)When travelling with the device active,
never move the gear lever to neutral.
121)In case of a malfunction or failure of
the device, contact a Fiat Dealership.
122)The electronic Cruise Control can be
dangerous if the system cannot keep a
constant speed. In specific conditions
speed may be excessive, resulting in the
risk of losing control of the vehicle and
causing accidents. Do not use the device
in heavy traffic or on winding, icy, snowy or
slippery roads.
ADAPTIVE CRUISE
CONTROL (ACC)
(where provided)
123) 124) 125) 126) 127) 128)
46) 47) 48) 49) 50) 51) 52)
DESCRIPTION
The Adaptive Cruise Control (ACC) is a
driver assist device which combines the
Cruise Control functions with one for
controlling the distance from the vehicle
ahead.
The Adaptive Cruise Control (ACC) uses
a radar sensor, located behind the front
bumper fig. 100 and a camera, located
in the middle of the windscreen fig. 101,
to detect the presence of a vehicle
close ahead.
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when the clutch is pressed (versions
with manual transmission);
when the engine speed exceeds a
maximum threshold (versions with
manual transmission and versions with
automatic transmission/automatic
transmission with double clutch) or
goes below a minimum threshold (only
versions with manual transmission);
when the car speed is not within the
settable speed range;
when the ESC (or ABS or other
stability control systems) are operating
or have just operated;
when the ESC system is off;
during automatic braking by the Full
Brake Control system (where provided);
when the Speed Limiter is active;
when the electronic Cruise Control is
active;
in case of failure of the device;
when the engine is off;
in case of obstruction of the radar
sensor (in this case the bumper area
where it is located must be cleaned).
In case of system set, the conditions
described above also cause a
cancellation or deactivation of the
system with times that may vary
according to the conditions.
IMPORTANT With the device set, it is
possible to reach speeds higher than
those set in the system by pressing theaccelerator pedal. In this condition, the
device does not turn off automatically,
but the device functions are limited: it is
therefore recommended to turn it off.
CHANGING SPEED
Speed increase
After having set the device, the stored
speed can be stored by holding the
SET + button pressed.
Press the SET + button once, the set
speed will increase by 1 km/h (or the
equivalent in mph). Each touch of the
button once will increase the speed by
1 km/h (or the equivalent in mph).
Hold the SET + button down, the set
speed will increase in 10 km/h steps (or
the equivalent in mph) until the button is
released. The set speed increase is
shown on the display.
Decreasing speed
After having set the device, the stored
speed can be reduced by holding the
SET – button pressed.
Press the SET – button once, the set
speed will increase by 1 km/h (or the
equivalent in mph). Each touch of the
button once will reduce the speed by
1 km/h (or the equivalent in mph).
Hold the SET – button down, the set
speed will decrease in 10 km/h steps
(or the equivalent in mph) until thebutton is released. The set speed
decrease is shown on the display.
NOTE If “Sport” mode is chosen on the
Drive Mode selector, the ACC will be
switch to sport mode: the system will
become more reactive in case of
acceleration.
ACCELERATING WHEN
OVERTAKING
When driving with the device active and
following a vehicle, the device provides
additional acceleration to facilitate
overtaking, when travelling over a given
speed and switches on the left direction
indicator (of the right indicator for
right-hand drive versions).
RECALLING THE SPEED
Once the system has been cancelled
but not deactivated, if a speed was
previously set simply press the RES
button and remove your foot from the
accelerator to recall it.
The system will be set to the last stored
speed.
Before returning to the previously set
speed, bring the speed close to that
value, then press the RES button and
release it.
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