freightliner BUSINESS CLASS M2 Driver Manual page 69

Drivetrain
2. Select neutral (N) by moving the selector switch
to the N position. When the "N" on the gear indi-
cator is solid, rather than flashing, the UltraShift
TCU is ready to power down. See
3. With the transmission in neutral, set the parking
brake.
4. Turn off the ignition key and shut down the en-
gine.
Automatic and Manual Modes
The SmartShift control has a slide switch located on
the body of the control lever just before the paddle
widens out. See Fig. 8.15. The slide switch controls
the forward driving mode, automatic or manual.
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1. Slide Switch (controls forward driving mode)
2. Selector Switch (controls gear selection)
3. Neutral Lock Button (prevents accidental shift into
gear)
Fig. 8.15, Switches, Ultrashift Transmission
To change mode at any time, move the slide switch
in the desired direction. This allows the driver to re-
spond to a wide range of driving conditions, such as
blind corners, tight curves, and steep hills.
IMPORTANT: Whatever the mode, it is always
possible to shift manually by moving the lever
up or down as needed. When the engine speed
is within 75 revolutions per minute (rpm) of the
load-based shift point for an automatic shift, the
UltraShift TCU will advance the shift.
In either mode, the gear indicator displays the cur-
rent gear. See Fig. 8.16.
8.17
Fig. 8.13.
2
1
3
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NOTE: The gear indicator displays the current gear. In
this example, it displays first gear.
Fig. 8.16, Current Gear Display
At the start of a shift, the current gear continues to
display until the transmission has been pulled into
neutral. At this point, as the transmission is synchro-
nizing for the new (target) gear, the gear indicator
flashes the number of the new gear.
When the shift is complete, the new gear displays
solid, without flashing.
Automatic Mode (AUTO)
In automatic drive mode (AUTO), upshifts and down-
shifts are made by the transmission without driver
intervention. Press in the neutral lock button, move
the selector switch to drive (D), and press down on
the throttle pedal. The transmission will shift auto-
matically.
If driving conditions require, it is still possible to re-
quest a manual shift. The transmission will make the
shift if the engine speed is within 75 rpm of the load-
based shift point for that gear.
If the driver presses down on the throttle pedal after
a manual downshift in automatic mode, the transmis-
sion will upshift again if the UltraShift TCU requires
it.
Manual Mode (MAN)
In manual drive mode (MAN), upshifts and down-
shifts are made by the driver:
•
To shift up, pull the lever up (towards you).
•
To shift down, push the lever down (away from
you).
The system will hold the current gear until the driver
requests a shift. In downhill situations in particular,
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