Fiat Ducato 2017 Owner's Handbook Manual page 85

ASR (AntiSlip
Regulation) SYSTEM
It is an integral part of the ESC system.
It automatically operates in the event
of one or both drive wheels slipping,
loss of grip on wet roads (aquaplaning)
and acceleration on slippery, snowy
or icy roads, etc.
Depending on the slipping conditions,
two different control systems are
activated:
if the slipping involves both drive
wheels, the ASR intervenes reducing
the power transmitted by the engine;
if the slipping only involves one
of the drive wheels, it intervenes
automatically braking the wheel that is
slipping.
60)
Engagement/ disengagement of the
ASR system
The ASR is switched on automatically
each time the engine is started.
While driving, the ASR can be switched
off and subsequently switched on
again by pressing the ASR OFF button
(A fig. 82).
61)
On some versions, the intervention of
the system is indicated by a message
shown on the display.
82
When the system is not active, the LED
on the button ASR OFF turns on and,
on some versions, a message appears
on the display.
If the ASR is disengaged during driving,
it is automatically reactivated when
the vehicle is next started.
When travelling on snowy roads with
snow chains, it may be helpful to turn
the ASR off: in fact, in these conditions,
the driving wheels skidding when
moving off gives you better traction.
HBA SYSTEM
(Hydraulic Brake Assist)
The HBA system is designed to
improve the vehicle's braking capacity
during emergency braking. The system
detects an emergency braking by
monitoring the speed and strength with
which the brake pedal is pressed,
thereby applying the optimal brake
pressure.
This can reduce the braking distance:
the HBA system therefore completes
the ABS.
Maximum assistance from the HBA
system is obtained pressing the brake
pedal very quickly. In addition, the
brake pedal must be pressed
continuously during braking, avoiding
intermittent presses, to benefit from the
system.
F1A0324
Do not reduce pressure on the brake
pedal until braking is no longer
necessary.
The HBA system is deactivated when
the brake pedal is released.
62) 63) 64)
ERM ELECTRONIC ROLLOVER
MITIGATION SYSTEM
(Electronic Rollover Mitigation)
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 the tendency
to roll over if this is due to reasons
such as driving on high side gradients,
collision with objects or other vehicles.
65)
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