freightliner M2 Plus 2023 Manual page 34

Instruments
1
2
04/25/2019
1. Front Axle Oil Temperature
2. Rear Axle Oil Temperature
3. Application Air Pressure
Fig. 3.23, Digital Front and Rear Axle Temperature, and
Application Air Pressure Gauges - ICUC
Under heavy loads, such as when climbing steep
grades, temperatures that exceed the normal oil
temperature range for a short period are not unusual.
If the temperature returns to normal when the load
decreases, there is no problem.
Application Air Pressure Gauge
The application air pressure gauge shown in
Fig. 3.23, 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.
DEF and Diesel Particulate Filter
Monitoring
See Chapter 13 Emissions for details of Diesel
Particulate Filter and DEF level monitoring.
Tire Pressure Monitoring System
The Tire Pressure Monitoring System (TPMS)
screens display tire pressure, temperature, and
sensor battery status. See
3.13
3
f611616
Fig. 3.24. Maintaining
correct tire pressure increases fuel economy.
Sustained high tire temperature can cause a tire to
deteriorate, leading to tread separation and blowouts.
05/30/2019
Fig. 3.24, Vehicle Operations: TPMS Axle Tire Pressure,
Temperature, and Sensor Status
Tire pressure can be displayed in psi or bar units.
Temperature can be displayed in °F or °C. Units of
measure are set under Settings. Sensor battery
status is displayed as a bar chart inside the outline of
a battery.
The TPMS will change the color of the tire on the
ICUC screen if the tire pressure or temperature is
either too high or too low. See
change the color of the sensor battery icon if the
power levels are too low. Amber indicates a condition
that may result in damage. Red indicates a condition
that may pose a threat to the vehicle.
Tire pressure monitoring settings are part of the
TPMS. Threshold temperatures and what triggers
alerts can be set on this screen.
Other ICUC Gauges and
Measurements
In addition to the two screens of gauges displayed
under the Vehicle Operations menu described above,
the ICUC driver display communicates a number of
f611460a
Fig. 3.24. It will also