Controls and Instruments
85
ACCELERATOR PEDAL
When changing gear, the accelerator pedal
should not be released. The system will govern
the clutch, gearbox and engine speed. The
system selects the gear and the point in time for
gear changing for optimum driving performance
based on accelerator pedal position, road
inclination, etc.
ECONOMY AND PERFORMANCE MODE
When the engine is started, the transmission is
in Economy mode. The transmission
automatically selects shift points and engine
parameters to maximize fuel economy.
Economy mode is primarily used when driving
under normal conditions.
The Performance mode gives driveability the
highest priority for optimum driving in traffic
condition and gradeability.
NOTE
Operating the vehicle in Performance mode
for extended periods can result in a loss of
fuel economy.
ECO-ROLL MODE (FREEWHEEL FUNCTION)
Eco-Roll reduces fuel consumption by
automatically disengaging the driveline when the
engine is not needed to maintain vehicle speed.
When Eco-Roll is active, the engine speed is
temporarily reduced to idle. Eco-Roll can be
used during normal driving with the accelerator
pedal or while in cruise control mode.
Eco-Roll is only available when the
engine brake is in Auto mode
.
First, set the dashboard Engine
Brake switch to the ON position.
When Eco-Roll is enabled, the DID shows E+.
When Eco-Roll intervenes, the selected gear
displayed in the DID (7–12) will change
momentarily to N1 or N2.
Eco-Roll disengages as soon as the brake pedal
or the accelerator pedal is depressed, but it
remains available. To disable Eco-Roll, set the
dashboard Engine Brake switch to the OFF
position. Eco-Roll is not available when the
Engine Brake Low
or Engine Brake High
modes are selected.
When Eco-Roll is enabled, it activates
automatically, but only when the following
conditions exist:
• Accelerator pedal is released.
• Service brake is released.
• Engine brake is in Auto mode
.
• Transmission pushbutton shift selector is in
the D position
• Transmission is operating in the Economy
mode.
• Vehicle is operating on a downhill or uphill
grade not greater than 2%.
• Selected gear is greater than 6.
• Brake cruise set speed is greater than 3 mph
(5 km/h) above cruise set-speed.
• Vehicle speed is less than 78 mph (125
km/h).
• Electronic Stability Control (ESC) and
antilock brake system (ABS) are not active.
• Exhaust Aftertreatment System regeneration
is not active.
LIMP HOME MODE
Limp home is an emergency mode that can be
engaged if a fault has occurred in the gearbox
that prevents the vehicle from being driven in
automatic, manual or reverse modes.
NOTE
Limp Home mode should only be used for
moving short distances.
To activate the Limp Home mode:
• Simultaneously press N
and + buttons. Activating
can only be done while
the vehicle is stationary.
• Select M position or R
position as required.
The driver can select gears for forward driving or
for reversing using the + and – button when
position M (manual program) or R (reverse) is
selected.
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