Fiat 500 Owner's Handbook Manual page 71

58) 59) 60) 61) 62) 63)
HH (Hill Holder) SYSTEM
This is an integral part of the ESC
system and facilitates starting on
slopes, activating automatically in the
following cases:
uphill: car stationary on a road with
a gradient higher than 5%, engine
running, brake pressed and gearbox in
neutral or gear (other than reverse)
engaged;
downhill: car 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 the 2 seconds have elapsed,
without starting, the system is
automatically deactivated, gradually
releasing the braking pressure.
During this release stage, the typical
mechanical brake release noise can be
heard, indicating that the car is about
to move.
Moving the car on sloping roads
For optimal starting on very steep
gradients, as follows:
Press the brake pedal to activate the
Hill Holder;
completely press the clutch pedal;
engage the gear;
remove your foot from the brake
pedal;
completely press the accelerator
pedal.
In this manner, the engine goes to the
optimal rpm for taking off uphill. The Hill
Holder remains engaged (car braked)
until the clutch is gradually released
(holding the accelerator pedal pressed):
at this point, the system switches off
and the car starts moving. The Hill
Holder function switches off
automatically if the cars does not
take-off within 2 seconds.
The manoeuvre makes it possible to
avoid pressing the accelerator (because
it must remain fully pressed during the
manoeuvre) and to operate only the
clutch, by gradually releasing it.
Operating the handbrake is not
necessary.
On less steep gradients, the system is
active also with the accelerator pedal
not completely pressed.
64) 65)
ASR (AntiSlip
Regulation) SYSTEM
This is an integral part of the ESC
system and 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 system intervenes,
reducing the power transmitted by the
engine;
if the slipping only involves one of
the drive wheels, it also intervenes
automatically, braking the wheel that is
slipping.
System intervention
This is indicated by the flashing of the
warning light on the instrument panel,
to inform the driver that the car is in
critical stability and grip conditions.
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