PREVOST H 2018 Series Operator'S Manual Download

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CONTROLS AND INSTRUMENTS 4-69

PA1628 H3-41, H3-45 Operator’s Manual

CAUTION

Always use the brakes to hold the vehicle
stationary on an uphill stop. Never hold the

vehicle stationary on an uphill slope using
the accelerator pedal. The clutch could
overheat, which could cause it to

breakdown.

The I-Shift transmission clutch is a dry disc
type, with no torque converter. Never allow

the clutch to slip in a too high gear when
starting the vehicle. If the clutch overheats,
a high clutch load message or clutch

protection active message will appear in
the DID along with the CHECK telltale light
and an audible warning.

WARNING

The vehicle can roll when stopped on a hill

or grade, or when the vehicle is starting
from a stop on a hill or grade. Always use
the brakes to hold the vehicle stationary on

a hill or grade. Failure to do so can result in
serious personal injury or death.

Hill Start Assist

Hill Start Assist provides anti-roll assistance
during the transition from standing still to
starting on a grade. The brake system maintains
pressure in the brake chambers for 3 seconds
after the service brake pedal is released, which
allows time to the driver to move is foot from
the brake pedal to the accelerator pedal.

Hill Start Assist is only intended to temporarily
hold the vehicle on a grade before the vehicle is
put into motion. The vehicle brake must be
applied, independent of HILL START ASSIST, to
hold the vehicle on a grade for an extended
period of time.

When available, Hill Start Assist is enabled at
starting of the engine. The Hill Start Assist
telltale light in the instrument cluster will blink
to indicate that the feature is temporarily
disabled. If a Hill Start Assist fault occurs, the
Hill Start Assist telltale light in the instrument
cluster will illuminate and the feature is
permanently unavailable until the fault is
repaired.

When Hill Start Assist is enabled, it activates
automatically, but only when the following
conditions exist:

•

Vehicle speed is zero.

•

Vehicle is on an incline or decline greater than
2%.

•

Shift selector is in the D position on an incline
or R position on a decline.

•

Service brake is applied.

•

ESC (Electronic Stability Control) is
functioning normally.

•

There has been no ESC activity in the
preceding stops.

When the service brake pedal is released, the
brakes are applied for approximately 3 seconds
or until the accelerator pedal is depressed,
whichever occurs first.

WARNING

Always apply parking brake before leaving

driver’s seat. The driver must not leave the
vehicle when the engine is running and a
gear is selected.

DRIVING

The most efficient way to operate the vehicle is
to use the automatic drive program, which is the
D position on the pushbutton  shift selector.
Gear  changing is automatic and the driver  can
concentrate on the road ahead.

NOTE

When driving in automatic drive mode
(position D), the engine brake control should
be in the Auto mode

to maximize the

integration of the transmission and brake
system according to Eco-Roll mode. This
means optimum performance and fuel
economy at all times.

D Position

With the pushbutton shift selector in the D
position, the transmission will automatically
upshift and downshift as necessary to maintain
the desired vehicle speed for the current driving
conditions.