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Given that, in a turn, the external wheels of the
car travel more than the internal ones and
therefore turn faster, sending a higher thrust
to the external rear wheel allows for the car to
be more stable and to not suffer an "under-
steer" condition. Understeer occurs when the
vehicle is turning less than appropriate for the
steering wheel position.
Dynamic Steering Torque (DST) System
The Dynamic Steering Torque (DST) function
uses the integration of the Electronic Stability
Control (ESC) system with the electric power
steering to increase the safety level of the
whole vehicle.
In critical situations for example (braking on
surfaces with different grip conditions), the
ESC system influences the steering through
the DST function to implement an additional
torque contribution on the steering wheel in
order to suggest the most correct maneuver to
the driver.
The coordinated action of the brakes and
steering increases the safety and control of
the vehicle.
NOTE:
The DST feature is only meant to help the
driver realize the correct course of action
through small torques on the steering wheel,
which means the effectiveness of the DST
feature is highly dependent on the driver's
sensitivity and overall reaction to the applied
104
torque. It is very important to realize that this
feature will not steer the vehicle, meaning the
driver is still responsible for steering the
vehicle.
Drive Train Control (DTC) System
Some models of this vehicle are equipped with
an All-Wheel Drive (AWD) system, which offers
an optimal drive for countless driving condi-
tions and road surfaces. The system reduces
tire slipping to a minimum, automatically
redistributing the torque to the front and rear
wheels as needed.
To maximize fuel savings, the vehicle with
AWD automatically passes to Rear-Wheel
Drive (RWD) when the road and environmental
conditions are such that they wouldn't cause
the tires to slip. When the road and environ-
mental conditions require better traction, the
vehicle automatically switches to AWD mode.
NOTE:
There may be a brief delay in shifting to
AWD mode after a tire slipping event occurs.
If the system failure symbol switches on,
after starting the engine or while driving, it
means that the AWD system is not working
properly. If the warning message activates
frequently, it is recommended to carry out
the maintenance operations.
Electronic Stability Control (ESC) System
The Electronic Stability Control (ESC) system
improves the directional control and stability
of the vehicle in various driving conditions.
The ESC system corrects the vehicle's under-
steer and oversteer, distributing the brake
force on the appropriate wheels. 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 path that the driver
intends to follow and compares it with the
vehicle's effective path. When the real path
deviates from the desired path, the ESC
system intervenes to counter the vehicle's
oversteer or understeer.
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.
System Intervention
The intervention of the system is indicated by
the flashing of the ESC warning light on the
instrument panel, to inform the driver that the
vehicle stability and grip are critical.
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