ACTIVE SAFETY SYSTEMS
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.
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.
36) 37) 38) 39) 40) 41) 42)
DTC (Drag Torque Control)
SYSTEM
The DTC (Drag Torque Control) System
prevents the locking of the drive wheels
that may occur in the event, for example,
of sudden release of the accelerator
pedal or abrupt downshifting in low-grip
conditions.
In such conditions, the braking effect of
the engine may cause slipping of the
drive wheels and consequent loss of
vehicle stability. In these situations, theDTC system intervenes by restoring
torque to the engine in order to preserve
stability and increase vehicle safety.
ESC (Electronic Stability Control)
SYSTEM
The ESC system improves the directional
control and stability of the vehicle in
various driving conditions, correcting
understeer and oversteer, distributing the
brake force on the appropriate wheels.
System intervention
The 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)
TC (Traction Control) SYSTEM
The 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 both drive wheels.
System intervention
The 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.
48) 49) 50) 51) 52)
PBA (Panic Brake Assist) SYSTEM
The PBA system is designed to improve
the vehicle’s braking capacity during
emergency braking.
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.
53) 54) 55)
HSA (Hill Start Assist)
It is an integral part of the ESC system
and facilitates starting on an incline.
56) 57)
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.
58)
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SAFETY
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 to reasons
such as driving on high side gradients,
collision with objects or other vehicles.
59)
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.
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.
The system is active only with ESC
engaged.When the ESC system is deactivated (by
pressing the button on the central
tunnel), the TSC system is deactivated as
well.
60) 61)
HDC (Hill Descent Control)
SYSTEM
(where provided)
62) 63)
On cars equipped in this way, this
function is an integral part of the ESC
system and is aimed at keeping the car
at a constant speed during a descent,
operating autonomously and in different
ways on the brakes.
In this way the vehicle stability and
completely safe driving are guaranteed,
above all in poor grip conditions and
steep descents.
Enabling the system
To enable the system, press the button
fig. 70.The system is enabled if the following
conditions are met:
theSelec-Terrain™device is in 4WD
LOW mode;
the vehicle speed is below 12 km/h;the electric parking brake (EPB) is
deactivated;
the driver side door is closed.
The system activation is reported by the
continuous switching-on of the icon
on
the display along with a dedicated
message.
Activation of the system
Once enabled, the HDC system will
activate automatically if the vehicle is
driven downhill on a steep slope, higher
than 8%.
70J0A0907C
103
automatically reactivate every time the
engine is started.
IMPORTANT When travelling on snowy
roads with snow chains, it may be helpful
to activate "Systems partially disabled"
mode: in these conditions, slipping of
the drive wheels when moving off makes
it possible to obtain better traction.
Systems disabled
Pressing the
button on the central
tunnel for more than 5 seconds
completely deactivates the ESC system,
as well as the TSC and ERM systems; the
TC system will be limited to braking
action on the individual drive wheels.
The other systems remain enabled.
Activation of this mode is highlighted by
the
warning light on the instrument
panel switching on (on some versions,
together with a message on the display).
IMPORTANT If a speed of approximately
65 km/h is exceeded, the systems will
behave as described for "Systems
partially disabled" mode.
To restore "Systems enabled" operating
mode, press the button on the central
tunnel again.
"Systems enabled" mode will
automatically reactivate every time the
engine is started.Versions with Selec-Terrain™ device
On versions withSelec-Terrain™device,
the activation of certain driving modes
partially or totally deactivates certain
active safety systems in order to optimise
performance in the specific mode.
When active safety systems are partially
or totally deactivated, the
warning light
will turn on in the instrument panel.
In "SAND" and "MUD" modes, the active
safety systems are partially disabled and
fine-tuned to ensure maximum
performance in the specific operating
modes. It is in any case possible to
reactivate them completely at any time
by pressing the
button on the central
tunnel should you wish to favour safety
over "off-road" performance.
IMPORTANT In 4WD LOW modes, the
active safety systems are completely
disabled in order to ensure maximum
off-road driving performance and it will
not be possible to reactivate them.
64) 65) 66) 67)
WARNING
36)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.
37)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.
38)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.
39)The ABS cannot overrule the natural
laws of physics, and cannot increase the
grip available according to the condition
of the road.
40)The ABS cannot prevent accidents,
including those due to excessive speed on
corners, driving on low-grip surfaces or
aquaplaning.
41)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.
105
42)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.
43)The ESC system cannot alter the
natural laws of physics, and cannot
increase grip, which depends on the
condition of the road.
44)The ESC system cannot prevent
accidents, including those due to
excessive speed on corners, driving on
low-grip surfaces or aquaplaning.
45)The capability of the ESC system must
never be tested irresponsibly and
dangerously, in such a way as to
compromise personal safety and the safety
of others.
46)For the correct operation of the ESC
system, the tyres must necessarily be of
the same make and type on all wheels, in
perfect condition and, above all, of the
prescribed type and size.
47)ESC performance features must not
induce the driver to take unnecessary or
unwarranted risks. Your driving style must
always be suited to the road conditions,
visibility and traffic. The driver is, in any
case, responsible for safe driving.48)For the correct operation of the TC
system, 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.
49)TC performance features must not
induce the driver to take unnecessary or
unwarranted risks. Your driving style must
always be suited to the road conditions,
visibility and traffic. The driver is, in any
case, responsible for safe driving.
50)The TC system cannot overrule the
natural laws of physics, and cannot
increase the grip available according to
the condition of the road.
51)The TC system cannot prevent
accidents, including those due to
excessive speed on corners, driving on
low-grip surfaces or aquaplaning.
52)The capability of the TC must never be
tested irresponsibly and dangerously, in
such a way as to compromise personal
safety and the safety of others.
53)The PBA system cannot overrule the
natural laws of physics, and cannot
increase the grip available according to
the condition of the road.
54)The PBA system cannot prevent
accidents, including those due to
excessive speed on corners, driving on
low-grip surfaces or aquaplaning.55)The capability of the PBA system
must never be tested irresponsibly and
dangerously, in such a way as to
compromise the safety of the driver, the
other occupants of the vehicle or any other
road user.
56)The Hill Start Assist system is not a
parking brake; therefore, never leave the
vehicle without having engaged the
electric parking brake, turned the engine
off and engaged first gear, so that it is
parked in safe conditions (for further
information read the "Parking" paragraph
in the "Starting and driving" chapter).
57)There may be situations on small
gradients (less than 8%), with vehicle
laden, in which the Hill Start Assist
system may not activate, causing a slight
reversing motion and increasing the risk of
collision with another vehicle or object.
The driver is, in any case, responsible for
safe driving.
58)DST is an aid for driving and does not
relieve the driver of responsibility for
driving the vehicle.
59)The performance of a vehicle with
ERM must never be tested in imprudent or
dangerous ways, with the possibility of
putting the safety of the driver or other
people at risk.
106
SAFETY
60)When towing trailers, the utmost
caution at the wheel is recommended.
Never exceed the maximum permitted
loads (see the description in the "Weights"
paragraph in the "Technical
Specifications" chapter).
61)The TSC system cannot prevent
swerving for all trailers. If the system
activates during driving, reduce the speed,
stop the vehicle in a safe place and
arrange the load correctly to prevent the
trailer from swerving.
62)Prolonged use of the system may
overheat the braking system. If the brakes
overheat, the HDC system, when active,
will be gradually deactivated after suitably
informing the driver (LED on button off): it
can be reactivated only when the brakes
have cooled sufficiently. The distance that
can be covered depends on the
temperature of the brakes and therefore
on the gradient, load and speed of the
vehicle.
63)The performance of a vehicle with
HDC must never be tested in imprudent or
dangerous ways, with the possibility of
putting the safety of the driver or other
people at risk.64)When "Systems partially disabled"
mode is selected, the intervention of the
TC function is limited to braking action on
the individual drive wheels and the
warning light switches on in the
instrument panel. In "systems partially
disabled" mode, the engine torque value
that the ESC system may require will not
be guaranteed and the stability of the
vehicle will therefore be reduced.
65)With "Systems partially disabled"
mode selected, the TSC (Trailer Sway
Control) system is disabled.
66)Your driving style must always be
suited to the road conditions, visibility and
traffic. The driver is, in any case,
responsible for safe driving.
67)When "Systems disabled" mode is
selected, the ESC system will not be
available in the event of emergency
manoeuvres. "Systems disabled" mode is
only for off-road use.
107
the door mirror and extends for about
6 metres towards the rear part of the
vehicle.
With the sensors 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 warning needs to be sent to
the driver. The system can detect the
presence of a vehicle in one of these
three areas.
Important notes
68)
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.
The system does not warn the driver
about the presence of cars coming from
the opposite direction, in the adjacent
lanes.
If a trailer is hitched to the car, the
system automatically deactivates.
For correct system operations, the rearbumper 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.).
If a tow hook has to be installed after
purchasing the vehicle, the system must
be deactivated from the display Menu or
through theUconnect™system.
Rear view: the system detects vehicles
approaching to the rear part of your
vehicle on both sides and entering the
rear detection area with a speed delta
lower than 50 km/h with respect to your
vehicle.
Overtaking vehicles: if another vehicle is
overtaken slowly (with a speed delta
lower 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
speed delta between the two vehicles is
higher than about 25 km/h, the warning
light does not light up.
RCP (Rear Cross Path detection) system
This system helps during reverse
manoeuvres in the case of reduced
visibility. During "RCP" operating mode,
the system produces acoustic and visual
indications when if the presence of an
object is detected. When an acousticwarning is sent, theUconnect™volume is
lowered.
The system can be activated/deactivated
through the display Menu or the
Uconnect™system.
The 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
comprised between about 1 km/h and
3 km/h and objects moving at a
maximum speed of 35 km/h, as generally
happens in the 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.
"Blind spot alert", "Visual" mode: when this
mode is active, the BSM system sends a
visual warning to the door mirror relating
to the object detected. When operating in
RCP mode, the system sends visual and
acoustic warnings when the presence of
an approaching object is detected. When
an acoustic warning is sent,
theUconnect™volume is lowered.
"Blind spot alert", "Sound & Display" mode:
when this mode is active, the BSM
system sends a visual warning to the door
mirror relating to the object detected. If
the direction indicator on the side where
109
sealants may damage the Tyre Pressure
Monitoring System sensor. If
aftermarket tyre sealant has been
used, it is recommended to go to a
Jeep Dealership to have the sensors
checked. After checking or adjusting
the tyre pressure, always refit the valve
cap to prevent humidity and dirt from
entering. They could damage the Tyre
Pressure Monitoring System sensor.
NOTE Some external factors (e.g.
external temperature, etc...) could affect
the information reported on the
instrument panel by the TPMS.
The tyre inflation pressure and the “low
pressure” reporting threshold could
change depending on the environmental
conditions.
TPMS check message
If a system failure is present, the
warning light flashes for about
75 seconds and then stays on solid. An
acoustic signal is also emitted.
TPMS deactivation
The TPMS can be deactivated by
replacing the wheels equipped with
TPMS with others that are not (e.g. when
replacing the wheel assemblies in
winter), if the country of purchase allows
it. Then drive the vehicle for at least
20 minutes at a speed higher than about25 km/h. The TPMS will emit an
acoustic warning, the
warning light
will flash for about 75 seconds, then will
stay on constantly and the instrument
panel will display the "Tyre pressure not
available" message with some dashes (–
–) instead of the pressure values.
The next time the engine is started, the
system will not emit any acoustic signal
and the display will not show the
message "Tyre pressure not available",
but the dashes (– –) will be still
displayed instead of the pressure value.
Operating example
Supposing that the prescribed cold
inflation pressure (i.e. vehicle stationary
for at least 3 hours) is 2.3 bar, if the
ambient temperature is 20°C and the
detected tyre pressure is 1.95 bar, a
temperature reduction of −7°C results in
a decrease in tyre pressure, bringing it to
approximately 1.65 bar. This pressure is
sufficiently low to activate the
warning
light.
Heating of tyres due to driving the
vehicle may increase tyre pressure up to
approximately 1.95 bar, but the
warning light will stay on. In this
situation, the warning light will switch off
only after the tyres are inflated to the
prescribed cold pressure value for the
car.
WARNING
68)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.
69)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.
70)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).
71)The system intervenes on vehicles
travelling in the same lane. People,
animals and things (e.g. pushchairs) are
not taken into consideration.
113
72)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.
73)The presence of the TPMS does not
permit the driver to neglect regular checks
of the tyre pressure, including for the
spare wheel, and correct maintenance: the
system is not used to signal a possible
fault to a tyre.
74)Tyre pressure must be checked with
tyres rested and 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. Repeat the check when
the tyres are cold.
75)Should one or more wheels be fitted
without sensors (e.g. if the spare wheel is
fitted), the system will no longer be
available for the replaced wheel and a
warning message will be shown on the
display, until the wheels with sensors are
fitted again.76)The TPMS 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.
77)Replacing standard tyres with winter
tyres and vice versa requires TPMS system
adjustment that must only be performed
by Jeep Dealerships.
78)Changes in outside temperature may
cause tyre pressures to vary. The system
may temporarily indicate insufficient
pressure. In this case, check the tyre
pressure when cold and, if necessary,
restore the inflation values.
79)When a tyre is removed, it is advisable
to replace the rubber valve seal as well:
contact a Jeep Dealership. The
fitting/removal of the tyres and/or rims
require special care. To avoid damaging or
fitting the sensors incorrectly, tyre and/or
rim fitting/removal operations should only
be carried out by specialised staff.
Contact a Jeep Dealership.
IMPORTANT
33)The system may have limited or absent
operation due to weather conditions such
as: heavy rain, hail, thick fog, heavy snow.34)The section of the bumper before the
sensor must not be covered with
adhesives, auxiliary headlights or any other
object.
35)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.
36)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.
37)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
Jeep Dealership for any operation of this
type.
38)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 Jeep
Dealership.
39)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.
114
SAFETY