ICU3/ICU4

The driver message center is controlled using the mode/reset switch, located on the right side of the ICU, and the + and – buttons mounted in the right-hand pod of the steering wheel ( see Fig.). See Fig.. Tap the mode/reset switch or the + switch to advance one screen; press and hold either switch to select a menu choice or reset the display. When the display resets, an audible chirp sounds.

Fig. 1, Steering Wheel-Mounted Switches

Four driving screens are accessible when the parking brake is off. All screens and menus are accessible when the parking brake is on (parked screens).

Driving Screens

The following screens are available when the parking brake is off (when the vehicle is mobile) and no active fault codes are found. Use the + and – switches on the steering wheel, or the mode/reset switch, to scroll through the screens. To reset any values, press and hold the + switch or the mode/reset switch. The driving screens appear in the following order:

• Odometer

• Trip distance

• Trip hours

• Outside temperature

Parked Screens/Menus

The following screens and menus are available when the parking brake is on (when the vehicle is parked) and no active fault codes are found. Use the + and – switches on the steering wheel, or the mode/reset switch, to scroll through the driving screens. To reset any values, press and hold the + switch or the mode/reset switch. See Fig.. The parked screens appear in the following order:

• Odometer

• Trip distance

• Trip hours

• Outside temperature

• Temperature alert

Fig. 2, ICU3 Parked Screens

• Diagnostics

• Clear screen (on vehicles with less than 255 miles on the odometer)

• Engine miles/hours

• Setup

Temperature Alert

When the outside temperature drops to 35°F (1.7°C) or less, the ICU displays a caution text at one-second intervals for five seconds, and an audible alert sounds. Tap the + or – switch on the steering wheel, or the mode/reset switch, to acknowledge the message. The audible alert will not sound again unless the temperature cycles above 37°F (4°C) and back to 35°F (1.7°C) or less. This warning only occurs while the ignition is on and the parking brake is released.

The temperature alert message allows the driver to enable or disable the ambient temperature warning.

Press and hold the mode/reset switch to toggle between on and off. Release the mode/reset switch, then tap it to select the displayed choice.

Diagnostics

When the DIAG screen is displayed, press and hold the mode/reset switch to access the various diagnostic screens. See Fig. for a diagram of the diagnostic screens.

Fig. 3, ICU4 Diagnostic Screens

The diagnostic screens are used by trained technicians to retrieve fault codes and other diagnostic information pertaining to the vehicle. If active fault codes display during start-up or at any other time, make a note of the fault code and take the vehicle to an authorized Freightliner service facility

If fault codes are displayed, press and hold the mode/reset switch to view the next fault code until reaching the DIAG screen.

Engine Miles/Hours

When the engine miles/hours screen is displayed, press and hold the mode/reset switch to access the engines screen submenu. See Fig. for a diagram of the engine screens.

Fig. 4, ICU4 Setup Screens

Setup

The setup menu allows the driver to manage ICU parameters. The setup screen submenu allows the driver to enable and change service intervals. See Fig..

If service intervals are enabled and service distance or time has been exceeded, the text SERVICE HOUR/MI (KM) will display at start-up to indicate vehicle service is required.

For each parameter, press and hold the mode/reset switch to navigate to the parameter change screen. In each change screen, tap the mode/reset switch to toggle between options.

Use the last screen in the setup menu, RESET EE , to reset the parameters the ICU learns back to the default settings. Press and hold the mode/reset switch to reset the following learned parameters:

• automated transmission display

• seat belt switch learning

• engine oil level

• other electronic devices that have been removed from the vehicle (e.g. Qualcomm)