When the service interval is overdue, the color of the
wrench icon on the maintenance screen will change
from white to amber and the message will change to
Maintenance Overdue. This cautionary pop-up will
continue to appear with every key cycle.
Each service interval must be reset in the mainte-
nance system when service is performed to provide
for accurate future service intervals and to turn off
pop-up messaging.
The reset button for maintenance system screens will
not appear until the vehicle has been driven 6.2
miles and the engine has run for fifteen minutes.
Maintenance system information and service recom-
mendations can also be viewed in the
Detroit Con-
nect
portal. Information on the portal is updated
every seven days.
Transmission Prognostics
The transmission prognostics screen is only available
for Allison transmissions. It displays information on
the transmission health status (oil filter status, oil
level, and oil life). If transmission health falls below
acceptable limits, a message will pop-up on the
driver display.
NOTE: For a valid oil level measurement, the
vehicle must be stopped on a level surface with
the transmission in neutral (N).
Suspension Air Pressure
The ICUC may display four vehicle air suspension
yellow caution alerts.
These include Suspension Lowered and Suspension
Raised alerts (
Fig. 3.28 and Fig. 3.29) indicating that
the current rear suspension height is either below or
above the normal ride height.
ECAS Problem Detected alert (
Fig. 3.30) indicates
the electronically controlled air suspension system
has an active fault.
A flashing Load Transfer alert (
Fig. 3.31) indicates
the ECAS system is applying the maximum available
vehicle load on the drive axle up to the maximum
allowable limit determined by the gross axle weight
rating (GAWR). Load transfer mode automatically
deactivates when the vehicle reaches 45 mph (72
kmh).
f61162705/19/2020
Fig. 3.27, Maintenance System Status - ICUC
f61143406/29/2016
Fig. 3.28, Suspension Lowered Alert - ICUC
11/09/2016
f611471
Fig. 3.29, Suspension Raised Alert - ICUC
04/22/2016
f611367
Fig. 3.30, ECAS Problem Detected Alert- ICUC
Instruments
3.16
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