2015 FIAT 500X wheel torque

ACTIVE SAFETY
SYSTEMSThe 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 and
stability 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 interventionThe 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) SYSTEMThe system intervenes in the event of
sudden downshifting, or during ABS
braking, restoring torque to the engine
and thus preventing excessive drag
at the drive wheels, which may lead the
wheels to lock and a loss of vehicle
stability, above all in low-grip
conditions.
ESC (Electronic Stability
Control) SYSTEMThe 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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System interventionThe intervention of the system is
indicated by the flashing of the
warning light on the instrument
panel, to inform the driver that
the vehicle is in critical stability and grip
conditions.38) 39) 40) 41) 42)
TC (Traction Control)
SYSTEMThe system automatically operates in
the event of slipping, loss of grip on wet
roads (aquaplaning) and acceleration
on slippery, snowy or icy roads, etc. on
one or more drive wheels. Depending
on the slipping conditions, two different
control systems are activated:
❒if the slipping involves both drive
wheels, the system intervenes,
reducing the power transmitted by the
engine;❒if the slipping only involves one of the
drive wheels, the BLD (Brake Limited
Differential) function is activated,
automatically braking the wheel which
is slipping (the behaviour of a
self-locking differential is simulated).
This will increase the engine torque
transferred to the wheel which isn't
slipping. This function remains active
even if the "Systems partially disabled"
and "Systems disabled" modes are
selected (see description in the
following pages).
System interventionThe intervention of the system is
indicated by the flashing of the
warning light on the instrument
panel, to inform the driver that
the vehicle is in critical stability and grip
conditions.43) 44) 45) 46) 47)
PBA (Panic Brake
Assist) SYSTEMThe PBA system is designed to
improve the vehicle’s braking capacity
during emergency braking.The system detects emergency braking
by monitoring the speed and force
with which the brake pedal is pressed,
and consequently applies the optimal
brake pressure. This can reduce the
braking distance: the PBA system
therefore completes the ABS.
Maximum assistance from the PBA
system is obtained by pressing the
brake pedal very quickly. In addition,
the brake pedal should be pressed
continuously during braking, avoiding
intermittent presses, to get the most
out of the system. Do not reduce
pressure on the brake pedal until
braking is not necessary anymore.
The PBA system is deactivated when
the brake pedal is released.
48) 49) 50)
HHC (Hill Hold Control)
SYSTEMThis is an integral part of the ESC
system and facilitates starting on
slopes, activating automatically in the
following cases:
❒uphill: vehicle stationary on a road
with a gradient higher than 5%, engine
running, brake pressed and
transmission in neutral or gear other
than reverse engaged;
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❒downhill: vehicle stationary on a road
with a gradient higher than 5%, engine
running, brake pressed and reverse
gear engaged.
When setting off, the ESC system
control unit maintains the braking
pressure on the wheels until the engine
torque necessary for starting is
reached, or in any case for a maximum
of 2 seconds, allowing your right foot
to be moved easily from the brake
pedal to the accelerator.
When two seconds have elapsed,
without starting, the system is
automatically deactivated, gradually
releasing the braking pressure. During
this release stage it is possible to hear a
typical mechanical brake release noise,
indicating the imminent movement of
the vehicle.
51) 52)
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) SYSTEMThe 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 to
reasons such as driving on high side
gradients, collision with objects or other
vehicles.
54)
TSC (Trailer Sway
Control) SYSTEMThe 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 interventionWhen 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.
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"Auto" MODEThis mode is aimed at comfort and
safety in normal grip and driving
conditions. On 4x4 versions, this mode
also reduces fuel consumption, since
it automatically disconnects the
transmission from the rear wheels if the
road and driving conditions allow it, in
addition to changing drive torque
distribution between the front and rear
axles.ActivationStarting from the active "Traction/All
Weather" mode, turn the ring nut
anticlockwise, keeping it in this position
for at least half a second, and in any
case until the relevant LED turns on,
and the selected mode is shown on the
display. The LED for the previously set
mode will simultaneously turn off. Upon
release, the ring nut will return to the
central position.
Starting from the active "Sport" mode,
turn the ring nut clockwise, keeping it in
this position for at least half a second,
and in any case until the relevant LED
turns on, and the selected mode is
shown on the display. The LED for the
previously set mode will simultaneously
turn off. Upon release, the ring nut will
return to the central position.
"Traction"/"All Weather" MODEIt is a driving mode for safety in poor
vehicle grip conditions (wet/slippery
road surface, rain, snow). On the 4x4
versions use is also recommended
on unsurfaced roads or off-road.ActivationStarting from the active "Auto" mode,
turn the ring nut clockwise, keeping it in
this position for at least half a second,
and in any case until the relevant LED
turns on, and the selected mode is
shown on the display. The LED for the
previously set mode will simultaneously
turn off. Upon release, the ring nut will
return to the central position.
Starting from the active "Sport" mode,
turn the ring nut anticlockwise, keeping
it in this position for at least half a
second, and in any case until the
relevant LED turns on, and the selected
mode is shown on the display. The
LED for the previously set mode will
simultaneously turn off. Upon release,
the ring nut will return to the central
position.
"Sport" MODEIt is the mode that emphasises the
pleasure of sport driving; it increases
fuel consumption however. Traction
is optimised on 4x4 versions, allowing
the vehicle road-hold performance
to be improved, even on bends.ActivationStarting from the active "Auto" mode,
turn the ring nut anticlockwise, keeping
it in this position for at least half a
second, and in any case until the
relevant LED turns on, and the selected
mode is shown on the display. The
LED for the previously set mode will
simultaneously turn off. Upon release,
the ring nut will return to the central
position.
Starting from the active "Traction/All
Weather" mode, turn the ring nut
clockwise, keeping it in this position for
at least half a second, and in any case
until the relevant LED turns on, and
the selected mode is shown on the
display. The LED for the previously set
mode will simultaneously turn off. Upon
release, the ring nut will return to the
central position.
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WARNING
118)Parking and other potentially
dangerous manoeuvres are, however,
always the driver’s responsibility. When
performing these operations, always make
sure that there are no other people
(especially children) or animals on the route
you want to take. The parking sensors are
an aid for the driver, but the driver must
never allow their attention to lapse during
potentially dangerous manoeuvres, even
those executed at low speeds.
WARNING
41)The sensors must be clean of mud,
dirt, snow or ice in order for the system to
operate correctly. Be careful not to scratch
or damage the sensors while cleaning
them. Avoid using dry, rough or hard
cloths. The sensors should be washed
using clean water with the addition of car
shampoo if necessary. When using special
washing equipment such as high pressure
jets or steam cleaning, clean the sensors
very quickly keeping the jet more than
10 cm away.
42)Have interventions on the bumper in
the area of the sensors carried out only by
a Fiat Dealership. Interventions on the
bumper that are not carried out properly
may compromise the operation of the
parking sensors.
LANE ASSIST
SYSTEM (lane
crossing warning)DESCRIPTION
43) 44) 45) 46) 47) 48)
The Lane Assist system makes use of a
camera located on the windscreen to
detect the lane limits and calculate
the position of the vehicle within such
limits, in order to make sure that it
remains inside the lane.
When both limits of the lane are
detected and the vehicle crosses one of
them without the awareness of the
driver (direction indicator off), the Lane
Assist system provides a tactile warning
by applying torque to the steering
wheel (vibration), thus advising the
driver that he must take an action to
remain in the lane.
IMPORTANT The torque applied to the
steering wheel by the system is
sufficient for the driver to notice it, but
always limited, so that they can easily
override it, and the driver always
maintains control of the vehicle. The
driver can therefore turn the steering
wheel as required at all times.If the vehicle continues going beyond
the line of the lane without any
intervention from the driver, the
warning light (or the icon on the
display) will be displayed on the
instrument panel to urge the driver to
bring the vehicle back into the limits of
the lane.
IMPORTANT The system monitors the
presence of the driver's hands on
the steering wheel. If they are
not detected, the system emits an
acoustic signal and deactivates until it is
reactivated by pressing the dedicated
button (see description below).
When one limit of the lane is detected
and the vehicle crosses it (direction
indicator off), warning light
(or the
icon on the display) will be displayed on
the instrument panel to urge the driver
to bring the vehicle back into the lane.
In this case, the tactile warning
(vibration on the steering wheel) is not
provided.
SYSTEM ACTIVATION/
DEACTIVATIONThe Lane Assist system can be
enabled/disabled using button A fig. 98,
located on the left stalk.
Each time the engine is started, the
system keeps the activation status
there was when it was previously
switched off.
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