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.
