Primary And Secondary Shift Schedules; Transmission Service Indicator; Description Of Available Ranges - PREVOST X3-45 Commuter 2020 Operating Manual

Ç È : Press respectively the Ç (Upshift) or È
(Downshift) arrow button when in DRIVE to request
the next higher or lower range. One press changes
gears by one range. If the button is held down, the
selection will scroll up or down until the button is
released or until the highest or lowest possible
range is selected. Protection mechanisms inhibit
selecting ranges that are not appropriate for the
current speed or which may damage driveline
components.
MODE: Pressing the MODE button allows the driver
to activate the secondary shift schedule that has
been programed into the TCM unit.
PRIMARY AND SECONDARY SHIFT
SCHEDULES
The primary shift schedule is the default mode at
starting of the engine and is typically specified to
accommodate normal vehicle operation. The
transmission controller automatically selects
between ECONOMY and PERFORMANCE shift
strategy, based on the vehicle actual load and the
grade on which the vehicle is operating. This is
called Load Based Shift Scheduling (LBSS). This
can produce improved overall vehicle fuel
economy while still enabling high productivity
when the vehicle is loaded.
In the secondary shift schedule, only the
ECONOMY shift strategy is available. No
switching is done between shift strategies. The
secondary shift mode is available only if selected
by the driver, using the MODE button. When the
secondary mode is activated, "MODE" illuminates
on the display.
NOTE
When the diagnostic display mode has been
entered, the MODE button is used to view and
toggle through diagnostic code information.
Refer to appendix C for more details about
diagnostic code display procedure and fluid
level check using the pushbutton shift selector.

TRANSMISSION SERVICE INDICATOR

: This indicator will be illuminated upon the
detection of a service issue relating to clutch, filter
or fluid life. The appearance of the indicator (lit
steadily, flashing, etc.) varies for each of the
conditions monitored by the system. Refer to
DOB 1300-1556
appendix C for more details about diagnostic
code display procedure, fluid level check or
prognostic features (Oil Life Monitor, Filter Life
Monitor and Transmission Health Monitor) using
the pushbutton shift selector.
Illuminated at startup for a bulb check, this
indicator will then be turned off if no service
conditions exist.

DESCRIPTION OF AVAILABLE RANGES

R (Reverse)
Press the «R» button to select reverse.
Completely stop the vehicle and let the engine
return idle before shifting from forward range «D»
to reverse «R» or from reverse to forward range.
The reverse warning signal will be activated when
this range is selected.
N (Neutral)
Use this position to start the engine. Select «N»
(Neutral) when checking vehicle accessories and
for extended periods of engine idle operation;
parking brake must then be applied. The
pushbutton shift selector automatically select
«N» (Neutral) when the ignition switch is turned
On.
NOTE
The automatic transmission does not have a
park «P» position. Select «N» (Neutral) and
apply parking brake when the vehicle is left
unattended. An audible alert will sound if the
engine is stopped and the parking brake is not
applied.
WARNING
Before leaving driver's seat, always put the
transmission in NEUTRAL and apply parking
brake.
WARNING
The vehicle service brakes or park brake must
be applied whenever NEUTRAL is selected to
prevent unexpected vehicle movement.
PA-1639 Operator's Manual 2020 X3-45 Commuter
Controls and Instruments 4-41