Active Safety Systems - Alfa Romeo Giulia-GTA Owner's Handbook Manual

ACTIVE SAFETY SYSTEMS

The car may be equipped with the
following active safety devices:
ABS (Anti-Lock Brakes);
ESC (Electronic Stability Control);
TC (Traction Control);
PBA (Panic Brake Assist);
HSA (Hill Start Assist);
AST (Alfa™ Steering Torque);
ATV (Alfa™ Active Torque Vectoring).
For the operation of the systems, see the
following pages.
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 car 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 car 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
92
system allowing the brake force to be
distributed between the front and rear
wheels.
System intervention
The ABS equipped on this vehicle is
provided with the "Brake by wire"
(Integrated Brake System - IBS) function.
With this system, the brake pedal
command given by pressing the brake
pedal is not transmitted hydraulically
but electronically, therefore, the light
pulsation that could be felt on the pedal
with the traditional system is no longer
perceptible.
31) 32) 33) 34) 35) 36)
ESC (Electronic Stability Control)
SYSTEM
The ESC system improves the directional
control and stability of the car in various
driving conditions.
The ESC system corrects the car's
understeer and oversteer, distributing
the brake force on the appropriate
wheels. The torque supplied by the motor
can also be reduced in order to maintain
control of the car.
The ESC system uses sensors installed
on the car to determine the trajectory
that the driver intends to follow and
compares it with the car's effective
trajectory. When the real trajectory
deviates from the desired trajectory, the
ESC system intervenes to counter the
car's understeer or oversteer.
Oversteer: occurs when the car 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 car stability
and grip are critical.
37) 38) 39) 40) 41)
Deactivating the system
The ESC system deactivates
automatically when using RACE driving
mode.
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. 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 motor;