freightliner M2 Plus 2023 Manual page 35

values related to vehicle operations. They are listed
in alphabetical order below.
Alerts
The Alerts screen stores the current active alerts.
Alerts are color-coded to indicate severity. Red
indicates a condition that may pose a threat to
control of the vehicle. Amber indicates a condition
that may result in damage to vehicle components or
derating of engine power. Grey is used for notices.
Battery Voltage
The Home screen in the ICU displays the vehicle
charging system voltage in the bottom left. By
monitoring this number, the driver can stay aware of
potential battery charging problems and have them
fixed before the batteries discharge enough to create
starting difficulties.
The Home screen will normally show approximately
13.7 to 14.1 volts when the engine is running. The
voltage of a fully charged battery is 12.7 to 12.8 volts
when the engine is off. Battery voltage under 12.0
volts is considered a low battery, and a completely
discharged battery will produce only about 11.0 volts.
If the Home screen shows an undercharged or
overcharged condition for an extended period, have
the charging system and batteries checked at an
authorized Freightliner service facility.
Diagnostics
The Diagnostics screen communicates fault codes
and other diagnostic information about the vehicle.
Fault codes are color-coded to indicate the severity
of the fault. Red indicates a condition that may pose
a threat to control of the vehicle. Amber indicates a
condition that may result in damage to vehicle
components or derating of engine power. Grey
indicates a condition that may affect fuel efficiency or
vehicle handling.
Engine Maintenance
Shows the number of hours the engine has been
operating.
Maintenance System
NOTE: the wrench icon is indicative of service,
not of something that needs to be fixed.
Standard messaging is based on the number of
miles (km) driven or time passed since the last
service.
Predictive maintenance information is calculated
based on these factors as well as engine and
transmission load and oil temperature.
Currently, predictive maintenance information is given
for engine oil, transmission oil, and axle oil changes.
By taking driving conditions into account, predictive
maintenance provides more accurate intervals for
fluid changes.
Just before the service interval ends, a message that
maintenance is due will appear. See
05/19/2020
Fig. 3.25, Maintenance System Status - ICUC
When the service interval is reached, a pop-up notice
that maintenance is due will appear with every key
cycle.
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
maintenance 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
recommendations can also be viewed in the
Connect portal. Information on the portal is updated
every seven days.
Instruments
Fig. 3.25.
f611627
Detroit
3.14