Eaton Endurant TRDR0950 EN-US User manual

Driver Instructions
Endurant™12-Speed
Automated Transmission
TRDR0950 EN-US
March 2023

i
Table of Contents
General Information
Warnings and Cautions .........................................................................1
Operation
Transmission Driver Interface Device Modes ........................................3
Gear Display ..........................................................................................4
Start-Up and Power Down .....................................................................6
Start-Up .........................................................................................6
Power Down ...................................................................................7
Reverse Mode .......................................................................................8
Neutral Mode .........................................................................................9
Drive Mode (Auto Mode) .....................................................................10
MANUAL Mode ....................................................................................11
LOW Mode ..........................................................................................13
Transmission MANUAL / LOW Mode Override ....................................14
Snow/Ice Operation .............................................................................15
Trailer Operation ..................................................................................16
Features ...............................................................................................17
Hill Start Aid .................................................................................17
Vehicle Facing Uphill – Forward Mode (HSA) ......................18
Vehicle Facing Downhill - Reverse Mode (HSA) ..................18
Clutch Abuse Protection ...............................................................19
Engine Overspeed Protection .......................................................20
Shuttle Shifting ............................................................................20
Smart Gear Selection ...................................................................20
Auto Neutral .................................................................................21
Load Based Shifting .....................................................................21
Coast Mode ..................................................................................22
Neutral Coast Mode ......................................................................23
Urge to Move (AutoLaunch) .........................................................24
Creep Mode ..................................................................................24
Force Hold / Force Neutral Operation ...........................................25
Transmission Power Take Off Operation ......................................26
Stationary PTO Operation ....................................................27
Mobile PTO Operation .........................................................27
Transmission Oil Display Message ......................................................28

ii
Table of Contents
Service and Maintenance
General Model Information ................................................................. 29
Serial Tag and Model Nomenclature ............................................ 29
Model Number ............................................................................. 29
Serial Number .............................................................................. 29
Troubleshooting .................................................................................. 30
Diagnostics .................................................................................. 30
Transmission Reset Procedure .................................................... 30
Transmission Air Supply .............................................................. 31
Proper Transmission Lubrication ........................................................ 32
Lubrication Specifications ............................................................ 32
Transmission Oil Level Inspection Procedure .............................. 33
Transmission Lubrication Change Intervals ................................. 34
Vehicle Towing .................................................................................... 35
Limited Driveline-Connected Towing ........................................... 36
Dynamometer Test Mode .................................................................... 37
Endurant HD N Models
Overview ............................................................................................. 39
Launching and Low Speed Maneuvering ..................................... 39
Accelerating and Shifting ............................................................. 40
Cruise Gears ................................................................................ 40

1
General Information
Warnings and Cautions
The alert symbol, signal words (DANGER, WARNING and CAUTION) and state-
ments throughout this manual indicate the potential severity of a situation.
Ensure to read, understand and follow each statement to avoid vehicle damage,
component damage, personal injury, severe injury and/or death.
DANGER: Indicates an immediate hazard. Failure to follow the indicated proce-
dures will cause major vehicle component damage, severe injury or death.
WARNING: Indicates an immediate hazard. Failure to follow the indicated proce-
dures may result in major vehicle component damage, severe injury or death.
CAUTION: Indicates a potential hazard. Failure to follow the indicated proce-
dures could result in minor or moderate component damage and/or personal
injury.
The NOTICE and Note statements through out this manual provide additional
details required to avoid damaging a component or incorrectly completing a
repair. Ensure to read, understand and follow each statement to properly com-
plete a repair.
NOTICE: Indicates component or property damage could result if you do not
follow the indicated procedure.
Note: Indicates additional detail that will aid in the repair of a component.
WARNING: Ensure to read, understand and follow each statement outlined
below. Failure to read, understand and follow each statement outlined below
may result in major vehicle component damage, property damage, severe injury
or death.
• Read the entire driver instructions before operating this transmission
system.
• If engine cranks in any gear lever position (shift mode) on the trans-
mission driver interface device other than Neutral (N), service vehicle
immediately.
• Before starting the engine, always be seated in the driver's seat, select
Neutral (N) mode using the transmission driver interface device, con-
firm a solid “N” in the gear display, and set the vehicle parking brake.
!
!
!
!

2
General Information
• Before working on a vehicle, parking the vehicle, or leaving the cab with
the engine running, select Neutral (N) mode using the transmission
driver interface device, confirm a solid “N” in the gear display, set the
vehicle parking brake, and chock the wheels.
• Always depress and hold the vehicle service brake prior to selecting a
gear lever position (shift mode) from Neutral (N) using the transmis-
sion driver interface device.
• Always ensure that fuel is at a sufficient operating level before operat-
ing vehicle. A loss of engine power could result in diminished transmis-
sion operation.
• Do not release the vehicle parking brake or attempt to select a gear
lever position (shift mode) from Neutral (N) using the transmission
driver interface device until the vehicle air system pressure is in the
normal operating range.
CAUTION: Ensure to read, understand and follow each statement outlined
below. Failure to read, understand and follow each statement outlined below
could result in component damage.
• Before operating a Power Take-Off (PTO), refer to “Transmission Power
Take Off Operation.”
• Prior to any type of welding on a vehicle equipped with this transmis-
sion system, disconnect the battery cables (+ and -).
Railroad Grade Crossing Requirements: It is a requirement that the driver of a
commercial vehicle specified under paragraph A sections 1-6 of FMCSA regula-
tion 392.10 need only cross railroad grade crossings in a gear that permits the
vehicle to complete the crossing without a change of gears. Select MANUAL
(M) mode using the transmission driver interface device to hold a transmission
gear position while crossing a railroad grade, refer to “MANUAL Mode” on
page 11.
WARNING: Failure to select MANUAL (M) mode to hold a transmission gear
position while crossing a railroad grade could result in major vehicle compo-
nent damage, property damage, severe injury or death.
!
!

3
Operation
Transmission Driver Interface Device Modes
The transmission driver interface device is an OEM component. Refer to OEM
for more information on operation, including engine brake operation.
Note: The transmission system may automatically override or prevent the
driver’s Upshift or Downshift request on the transmission driver interface
device or automatically initiate a gear change based on vehicle operating condi-
tions. Refer to “Transmission MANUAL / LOW Mode Override” on page 14.
R Selects Reverse mode (see page 8 for details)
N Selects Neutral mode, used for
Start-Up and Power Down
(see page 9 for details)
D Selects Drive mode (see page 10 for details)
MANUAL Selects MANUAL mode (see page 11 for details)
LOW Selects LOW mode (see page 13 for details)
Upshift/
Downshift
Function
Used to request Upshifts and
Downshifts and to change
start gears

4
Operation
Gear Display
The gear display indicates the current gear position of the transmission. During
an Upshift or Downshift the display may momentarily flash the target gear posi-
tion.
A dash “-” appears in the gear display when the transmission system cannot
achieve Neutral gear position.
“CA” appears in the gear display when a clutch abuse protection event is occur-
ring.
“AN” appears in the gear display when the transmission system goes into Auto
Neutral.
“CC” appears in the gear display when the transmission system is performing a
clutch calibration.
Current Gear
GearShift
TransitionSuccessful Gear
Shift
Solid
May Momentarily
Flash
Solid

5
Operation
Note: Gear display indicators, messages, and tones will vary based on how the
transmission system features and functions are configured in the Transmission
Control Module (TCM) and how the OEM has implemented them. Refer to OEM
for more information on the dashboard display.
Low Transmission Air Message: Allow the vehicle air system pressure to reach
normal operating range prior to transmission system operation. Ensure the
vehicle air system is operating and maintained per OEM guidelines.
NOTICE: If the low transmission air message is indicated, allow the engine to
idle, shutting off the engine prolongs the condition. In most cases the transmis-
sion system will recover and towing the vehicle is not required.
Clutch Temperature Message: Safely and immediately discontinue the vehicle
operation that is being performed which is causing increased clutch tempera-
ture. Depress and hold the vehicle service brake or apply the vehicle parking
brake and idle the engine until the message is no longer indicated.
NOTICE: If the clutch temperature message is indicated, allow the engine to
idle, shutting off the engine prolongs the condition. In most cases the transmis-
sion system will recover and towing the vehicle is not required.
Transmission Fluid Temperature Message: Safely and immediately discon-
tinue the operation that is being performed which is causing increased trans-
mission fluid temperature - depress and hold the vehicle service brake or
apply the vehicle parking brake and idle the engine until the message is no
longer indicated. Ensure Gross Combination Weight (GCW) does not exceed
110,000 lbs (49.895 Metric Tons) and vehicle is operated on grades less than
21 percent.
NOTICE: If the transmission fluid temperature message is indicated, allow the
engine to idle, shutting off the engine prolongs the condition. In most cases
the transmission system will recover and towing the vehicle is not required.
Note: If the low transmission air, clutch temperature and/or transmission fluid
temperature message is indicated, and the condition no longer exists, some
vehicle displays may require a manual reset to clear the message. Refer to
OEM guidelines regarding message reset procedure.

6
Operation
Start-Up and Power Down
Start-Up
1. Turn ignition key to On with the engine off to allow the transmission
system to power-up.
Note: Engine cranking is delayed until the transmission system power-up
is complete and the gear display shows a solid “N” indicating the transmis-
sion is in neutral gear position.
2. Once a solid "N" is indicated in the gear display, start the engine.
3. Allow vehicle air system pressure to build to normal operating range.
4. Depress and hold the vehicle service brake.
Note: If the vehicle service brake is not depressed prior to selecting a gear
lever position (shift mode) using the transmission driver interface device,
the request will be denied.
5. Select the desired gear lever position (shift mode) using the transmis-
sion driver interface device.
Note: If the initial gear lever position (shift mode) or start gear change
request was denied, select Neutral (N) mode, depress and hold the vehicle
service brake and re-select.
Note: The transmission system may automatically override or prevent the
driver’s Upshift or Downshift request on the transmission driver interface
device or automatically initiate a gear change based on vehicle operating
conditions. Refer to “Transmission MANUAL / LOW Mode Override” on
page 14.
6. Release the vehicle parking brake.

7
Operation
Power Down
1. Safely bring vehicle to a complete stop.
2. Continue to depress and hold the vehicle service brake.
3. Select Neutral (N) mode using the transmission driver interface device.
Note: A solid “N” in the gear display indicates the transmission is in neutral
gear position.
NOTICE: Neutral gear position should always be achieved before initiating a
power down, except in cases of an emergency.
4. Set the vehicle parking brake.
WARNING: Apply vehicle parking brake and follow OEM parking instruc-
tions. Failure to follow these instructions could cause unintended vehicle
movement and may result in major vehicle component damage, property
damage, severe injury or death.
5. Key off.
!

8
Operation
Reverse Mode
•Selects Reverse (R) mode and a reverse gear position.
Note: If the vehicle service brake is not depressed prior to selecting
Reverse (R) mode using the transmission driver interface device, the
request will be denied. If the request was denied, select Neutral (N) mode,
depress and hold the vehicle service brake and re-select.
• The driver may manually select a specific reverse start gear using the
transmission driver interface device to Upshift or Downshift to the
desired gear. Refer to OEM transmission driver interface device
instructions.
• If vehicle speed is greater than 2 MPH, the transmission system will
not allow engagement into a Reverse gear position.
Note: The transmission system may automatically override or prevent the
driver’s Upshift or Downshift request on the transmission driver interface
device or automatically initiate a gear change based on vehicle operating
conditions. Refer to “Transmission MANUAL / LOW Mode Override” on
page 14.
CAUTION: Do not depress and hold the vehicle accelerator pedal and ser-
vice brake pedal at the same time during a vehicle launch (two-footing).
Two-footing during a vehicle launch may cause the vehicle and cab to rock
and bounce resulting in component damage, property damage and/or per-
sonal injury.
!

9
Operation
Neutral Mode
•Selects Neutral (N) mode and neutral gear position.
• Neutral is the initial gear position after Start-Up and the final gear posi-
tion before Power Down.
WARNING: Apply vehicle parking brake and follow OEM parking instruc-
tions. Failure to follow these instructions could cause unintended vehicle
movement and may result in major vehicle component damage, property
damage, severe injury or death.
Note: When attempting to start the engine and the engine does not crank,
confirm Neutral (N) is selected on the transmission driver interface device,
confirm a solid “N” in the gear display, vehicle parking brake is applied and
vehicle service brake is depressed.
!

10
Operation
Drive Mode (Auto Mode)
•Selects Drive (D) mode and a forward gear position.
Note: If the vehicle service brake is not depressed prior to selecting Drive
(D) mode using the transmission driver interface device, the request will be
denied. If the request was denied, select Neutral (N) mode, depress and
hold the vehicle service brake and re-select.
• The transmission system automatically selects a forward start gear
based on vehicle operating conditions such as: grade, load, and vehicle
weight. Refer to“Smart Gear Selection” on page 20.
- The driver may manually select a specific forward start gear using
the transmission driver interface device to Upshift or Downshift
to the desired gear. Refer to OEM transmission driver interface
device instructions.
• The transmission system automatically selects and engages the appro-
priate gears based on vehicle operating conditions.
- The driver may request a gear shift while driving using the trans-
mission driver interface device to Upshift or Downshift to a
desired gear when the transmission system is near a shift point.
Multiple gear Upshifts and Downshifts may be allowed, each
Upshift/Downshift request equals one gear change.
Note: The transmission system may automatically override or prevent the
driver’s Upshift or Downshift request on the transmission driver interface
device or automatically initiate a gear change based on vehicle operating
conditions. Refer to “Transmission MANUAL / LOW Mode Override” on
page 14.
Note: Normal Drive mode is the recommended mode for optimal vehicle
performance.
CAUTION: Do not depress and hold the vehicle accelerator pedal and ser-
vice brake pedal at the same time during a vehicle launch (two-footing).
Two-footing during a vehicle launch may cause the vehicle and cab to rock
and bounce resulting in component damage, property damage and/or per-
sonal injury.
!

11
Operation
MANUAL Mode
MANUAL mode allows the driver to manually shift gears instead of letting the
transmission system select gears automatically.
• The driver requests gear shifts using the transmission driver interface
device to Upshift or Downshift to the desired gears. Multiple gear
Upshifts and Downshifts may be allowed, each Upshift/Downshift
request equals one gear change.
• The transmission system holds the current gear position until the
driver initiates another Upshift or Downshift.
Note: The transmission system may automatically override or prevent the
driver’s Upshift or Downshift request on the transmission driver interface
device or automatically initiate a gear change based on vehicle operating condi-
tions. Refer to “Transmission MANUAL / LOW Mode Override” on page 14.
Note: Normal Drive mode is the recommended mode for optimal vehicle perfor-
mance.

12
Operation
MANUAL / Hold Mode Gear
Hold Mode Gear is used to limit the use of MANUAL mode. When Hold Mode
Gear is configured in the Transmission Control Module (TCM) to a specific gear,
MANUAL mode becomes a hold gear function only. The default configuration
for this function in the TCM is Disabled. The configuration can be changed
using ServiceRanger.
• When MANUAL mode is selected and the transmission is in a gear
equal to or greater than the configured Hold Mode Gear, the transmis-
sion will remain in the current gear; any Upshift or Downshift requests
using the transmission driver interface device are not allowed and an
audible tone may be emitted every 10 seconds.
• When MANUAL mode is selected and the transmission is in a gear less
than the configured Hold Mode Gear, the transmission system allows
normal MANUAL mode operation.
Note: The transmission system may automatically override or prevent the
driver’s Upshift or Downshift request on the transmission driver interface
device or automatically initiate a gear change based on vehicle operating condi-
tions. Refer to “Transmission MANUAL / LOW Mode Override” on page 14.

13
Operation
LOW Mode
LOW mode allows the driver to maximize engine braking and minimize the use
of the vehicle service brake when driving down long grades or coming to a stop.
• The driver may select LOW mode using the transmission driver inter-
face device while the vehicle is moving to prevent the transmission sys-
tem from Upshifting, and support Downshifting at the earliest
opportunity to enable higher engine RPM to promote maximum engine
braking based on vehicle operating conditions.
• If LOW mode is selected using the transmission driver interface device
while the vehicle is stationary, the transmission system will shift into
1st gear and remain there; any Upshift or Downshift requests using the
transmission driver interface device are not allowed.
WARNING: On low friction surfaces refrain from engine braking when in LOW
mode. Excessive engine braking at high engine RPM may cause a loss of trac-
tion and vehicle control and may result in major vehicle component damage,
severe injury or death.
Note: The transmission system may automatically override or prevent the
driver’s Upshift or Downshift request on the transmission driver interface
device or automatically initiate a gear change based on vehicle operating condi-
tions. Refer to “Transmission MANUAL / LOW Mode Override” on page 14.
!

14
Operation
Transmission MANUAL / LOW Mode Override
The transmission system may automatically override or prevent the driver's
Upshift or Downshift request on the transmission driver interface device or
automatically initiate a gear change based on vehicle operating conditions. If the
transmission system overrides or prevents a mode request, an audible tone
may be emitted.
• If the transmission is being back-driven and the engine is approaching
its high RPM level limit, the transmission system will override the
MANUAL or LOW mode functions and perform an Upshift to prevent
engine damage.
NOTICE: The transmission system initiates Upshifts for engine overspeed
protection. Refer to “Engine Overspeed Protection” on page 20.
•If the driver manually selects a start gear using the transmission driver
interface device that, when engaged, causes the engine to lug at a
launch, the transmission system will override the MANUAL mode
request and select an appropriate start gear to prevent engine lugging
and possible damage.

15
Operation
Snow/Ice Operation
This transmission system is designed to work in coordination with the vehicle's
traction control system to ensure optimal operation.
•If the driver observes low friction road conditions (rain, ice, snow, etc.)
and does not want the transmission system to make a gear shift, the
driver may select MANUAL (M) mode using the transmission driver
interface device. The transmission system will remain in the current
gear position until the driver re-selects Drive (D) mode or chooses to
Upshift or Downshift using the transmission driver interface device
once road conditions improve.

16
Operation
Trailer Operation
Trailer Connecting and Sliding Trailer Axle
• Prior to backing the vehicle under the trailer, ensure proper trailer
height.
• Select the lowest available start gear for Drive (1st) or Reverse (R1)
using the Downshift function as needed on the transmission driver
interface device.
• Refer to vehicle and trailer manufacturer guidelines for unlocking, slid-
ing and locking trailer axles.
Note: If repeat attempts are made and the automated clutch starts to overheat,
the display may indicate “CA” (Clutch Abuse) and/or a clutch temperature mes-
sage and an audible tone may be emitted. Refer to “Clutch Abuse Protection”
on page 19.

17
Operation
Features
Hill Start Aid
•Hill Start Aid (HSA) requests the vehicle foundation brake system to
temporarily hold (3 seconds) the vehicle in place when stopped on a
grade of 3% or greater to allow the driver to transition from the vehicle
service brake pedal to the vehicle accelerator pedal to achieve a con-
trolled launch.
• When HSA is configured on, or Enabled, in the Transmission Control
Module (TCM) and the vehicle is stopped on a grade of 3% or greater
the transmission system requests the vehicle electronic brake system
keep the vehicle foundation brakes applied for 3 seconds after the
driver releases the vehicle service brake.
• The feature may be disabled for one launch by selecting the vehicle's
HSA switch. When the HSA switch is selected, the lamp on the switch
flashes indicating the feature is disabled. The feature automatically
enables after a successful launch. Refer to OEM for information on
operation of the HSA switch.
Note: The default configuration for this feature in the TCM is Enabled and
can be configured to activate on a 1%, 2% or 3% grade using Ser-
viceRanger.
NOTICE: If the vehicle electronic brake system is faulted and not working,
this feature will not function. Refer to OEM for more information on the
vehicle electronic brake system.