Daimler Freightliner Cascadia 2021 - Low (L); Low Override; Manual Mode (M); Manual Mode Override

the shift control, it will be the default until the vehicle
is powered down or the selection is changed again
manually.
IMPORTANT: Prior to ascending a steep grade,
either reduce the default start gear by one
(using the shift control) or apply full throttle for
the duration of the grade so the vehicle main-
tains the proper engine and vehicle speed dur-
ing the entire grade.
In Drive, the transmission automatically performs up-
shifts and downshifts. However, when the transmis-
sion is near the shift point, the shift can be forced
using the upshift or downshift function of the shift
control.
NOTE: The transmission may deny a shift while
ascending or descending a grade if the load of
the vehicle and grade of the terrain in combina-
tion with the drivetrain ratio and engine torque
fall outside of the acceptable range to perform a
shift. If the shift is denied, a tone will sound.
Manual Mode (M)
In manual mode, the driver requests upshifts and
downshifts instead of letting the Eaton transmission
select them automatically. Manual shifting may be
helpful when traversing a work site, railroad tracks,
or steep grades, for example.
Use the mode switch on the shift control to select the
manual mode (M). To drive forward, rotate the D/N/R
switch to Drive (D), and press down on the throttle
pedal. To shift up, pull the lever up (towards you); to
shift down, push the lever down (away from you).
The system holds the current gear unless a shift is
requested or if the system initiates a manual mode
override.
NOTE: The transmission may deny a shift while
ascending or descending a grade if the load of
the vehicle and grade of the terrain in combina-
tion with the drivetrain ratio and engine torque
fall outside of the acceptable range to perform a
shift. If the shift is denied, a tone will sound.
NOTE: If attempting to select a non-Neutral
mode without applying the service brakes, the
transmission will not shift into gear. To shift into
gear, select Neutral, apply the service brakes,
and select the desired mode again.
Manual Mode Override
The system is equipped with a manual mode over-
ride function. If the vehicle is being "back driven" (for
example, descending a grade and the engine speed
is excessively high), the system will upshift automati-
cally. Also, if the start gear is changed and it causes
the engine to lug at takeoff, the system will override
the current position and select the best available
gear.
Low (L)
Use Low when wanting to maximize engine braking
and minimize the use of the brake pedal—for ex-
ample, when driving down long grades or when com-
ing to a stop. To select Low, push down on the multi-
function stalk switch, and hold in the down-shift
position for half a second or more. The lowest avail-
able start gear will be selected (the starting gear can-
not be changed in Low).
If Low is selected while moving, the transmission will
not upshift (unless the system initiates a Low over-
ride). The system will downshift at the earliest oppor-
tunity to provide maximum engine braking.
NOTE: If attempting to select a non-Neutral
mode without applying the service brakes, the
transmission will not shift into gear. To shift into
gear, select Neutral, apply the service brakes,
and select the desired mode again.
Low Override
The system is equipped with a Low override function.
If the vehicle is being "back driven" (for example, de-
scending a grade and the engine speed is exces-
sively high), the system will upshift automatically.
Also, if the start gear is changed and it causes the
engine to lug at takeoff, the system will override the
current position and downshift.
Clutch Abuse Protection
Although a vehicle equipped with an Eaton auto-
mated transmission uses an automated clutch, the
clutch can still overheat and slip with improper use.
The clutch abuse protection feature helps protect the
clutch if the automated clutch starts to overheat.
When the clutch abuse protection feature initiates
and sounds a warning tone, full clutch actuation must
be completed quickly. If it is not completed quickly
enough, the system will either open the clutch (if the
throttle pedal is not being pressed) or close the
clutch (if the throttle pedal is being pressed). If the
Automated and Automatic Transmissions
17.8