Daimler Freightliner Cascadia 2021, Driver Manual, Page: 57 / 322

safe stop and investigate the cause to prevent
further damage. Do not operate the vehicle until
the cause has been determined and corrected.
Under heavy loads, such as when climbing steep
grades, temperatures that exceed the normal oil tem-
perature range for a short period are not unusual. If
the temperature returns to normal when the load de-
creases, there is no problem.
Drive Axle Oil Temperature Gauges
NOTICE
A sudden increase in oil temperature that is not
caused by a load increase may indicate mechani-
cal failure. Bring the vehicle to a safe stop and
investigate the cause to prevent further damage.
Do not operate the vehicle until the cause has
been determined and corrected.
During normal operation, drive axle oil temperature
gauges should read as follows:
•
160 to 220°F (71 to 104°C) for Detroit
™
and
Meritor ™ drive axles
•
180 to 200°F (82 to 93°C) for Dana Spicer®
drive axles
Under heavy loads, such as when climbing steep
grades, temperatures that exceed the normal oil tem-
perature range for a short period are not unusual. If
the temperature returns to normal when the load de-
creases, there is no problem.
Lift Axle Pressure Gauge
The lift axle pressure gauge registers the air pres-
sure applied to the lift axles.
DPF Soot Level Gauge
See Chapter 14 Emissions and Fuel Efficiency for
details of Diesel Particulate Filter and DEF level
monitoring.
Application Air Pressure Gauge
An application air pressure gauge registers the air
pressure being used to apply the brakes. The gauge
will not register air pressure until the foot brake pedal
is depressed or the trailer hand brake is applied.
Suspension Air Pressure Gauge
The suspension air pressure gauge registers the air
pressure applied to the vehicle air suspension.
Trailer Application Air Pressure Gauge
The trailer application air pressure registers the ap-
plied air pressure in the brake circuit.
Trailer Suspension Air Pressure
Gauge
The trailer suspension air pressure gauge registers
the air pressure applied to the trailer air suspension.
Turbo Boost Pressure Gauge
The turbo boost pressure gauge registers the pres-
sure in the intake manifold, in excess of atmospheric
pressure, being created by the turbocharger.
Base ICC5 A-Panel Gauges
Outside of the gauges screen, the ICC5 offers a
number of other digital gauges and instruments.
Battery Voltage
The ICC5 A-panel displays the vehicle charging sys-
tem voltage in the upper left corner. By monitoring
this number, the driver can stay aware of potential
battery charging problems and have them fixed be-
fore the batteries discharge enough to create starting
difficulties.
The driver display 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 driver display screen shows an undercharged
or overcharged condition for an extended period,
have the charging system and batteries checked at
an authorized Freightliner service facility.
Speedometer and Tachometer
In the ICC5 the speedometer and tachometer are
combined. On the driver display base screen the in-
formation is presented as a centered arch (see
Fig. 3.59 ). On the driver display pilot screen, it be-
comes a split band near the bottom of the screen
(see
Fig. 3.58 ).
The speedometer registers the speed of the vehicle.
The tachometer indicates engine speed in revolutions
per minute (rpm) and serves as a guide for shifting
Instruments
3.34