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Head Up Display Description and Operation

Head Up Display Description and Operation

General Description

The head up display is a secondary display system that reflects vehicle information onto the windshield. The head up display system consists of the following:


The vehicle speed display

The engine speed display

The outside air temperature display

The audio information display

The transmission gear display

The compass heading display

The turn-by-turn display if the vehicle is equipped with a navigation radio

The indicator displays

The control switches

Arbitrary messages


Indicator Displays

The head up display displays the following:


Turn signal indicators

High beam indicator

Km/h (MPH) indicator

Fuel level low message

Traction control active message

Stabilitrak active message

Check tire pressure message

Cruise set to message

Speed limited to message


For further information, refer to Indicator/Warning Message Description and Operation .

Vehicle Speed Display

The head up display displays the vehicle speed based on the information from the ECM. The ECM sends the vehicle speed information via a High Speed CAN-Bus signal to the instrument cluster. The instrument cluster then sends the vehicle speed information via a Low Speed CAN-Bus signal to the head up display in order to display the vehicle speed, either in kilometers or miles, based on the vehicle requirements

Engine Speed Display

The windscreen display shows engine speed based on the information from the ECM. The ECM converts data from the engine speed sensor to an engine speed signal. The ECM sends the information on engine speed to the combined instrument panel via signals on the fast CAN bus. The instrument cluster then sends the information via a Low Speed CAN-Bus signal to the head up display to display the engine speed.

Audio Information Display

The head up display displays the following audio information:


The audio source or band and station or track information

The CD disc (for multiple changer) and the CD track

The turn-by-turn display if the vehicle is equipped with a navigation radio


The head up display receives serial data messages from the radio indicating the display mode, the frequency, the band, and the CD track.

The control switches

The head up display switch is located to the left (part of near headlamp switch) of the steering wheel. The head up display switch consists of the following controls:


Off

Dimming

Up/Down

Side


Off

To turn off the head up display, rotate the dimming knob fully counterclockwise until the head up display turns off.

Dimming

Turn the dimming knob clockwise or counterclockwise to brighten or dim the head up display.

Up/Down

Press the Up or Down switch to center the head up display image in your view. The head up display image can only be adjusted up and down, not side to side.

Side

There are three different formats which can be selected. Each press of the page switch will cycle to the next page. Holding down the button does not cycle through pages.

Display formats

There are three different formats with different displays.

Format 1 shows:


The vehicle speed display

Turn signal indicators

High beam indicator

The transmission gear display

The outside air temperature display

The compass heading display


Format 2 shows:


The vehicle speed display

Turn signal indicators

High beam indicator

Transmission gear display (only for Tap up/down mode)


Format 3 shows:


The vehicle speed display

The engine speed display

Turn signal indicators

High beam indicator

The transmission gear display