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System Description
 
 
SYSTEM DIAGRAM
Parts nameDescription
Head Up Display unitRefer to Head Up Display Unit.
Head Up Display main switchRefer to Head Up Display Main Switch.
ADAS control unit 2Transmits the display signal of drive assistance and warning to the Head up Display unit via CAN communication.
ECMTransmits the ASCD status to the Head Up Display unit via CAN communication.
BCMTransmits the following signals to the Head Up Display unit via CAN communication.
  • Auto ACC status signal
  • Vehicle status signal
ABS actuator and electric unit (control unit)Transmits the odometer signal to the Head Up Display unit via CAN communication.
Keyless operation key unitTransmits the user identification signal to the Head Up Display unit via CAN communication.
IPDM E/RTransmits the battery voltage signal to the Head Up Display unit via CAN communication.
AV control unitTransmits the key link activation status signal to the Head Up Display unit via CAN communication.
Combination meter
  • Transmits the following signals and HUD setting signal to the Head Up Display unit via CAN communication.
    • Vehicle speed display signal
    • HUD setting signal
  • The navigation signal received from the AV control unit is transmitted to the Head Up Display unit via AV communication.
 
 
Head Up Display Unit Input Signal
CAN communication signal
Transmit unitSignal name
ADAS control unit 2Display signal
ECMASCD status signal
BCMAuto ACC status signal
Vehicle status signal
ABS actuator and electric unit (control unit)Odometer signal
Keyless operation key unitUser identification signal
IPDM E/RBattery voltage signal
AV control unitKey link activation status signal
Combination meterVehicle speed display signal
HUD setting signal
AV Communication signal (Combination meter → Head Up Display Unit)
Transmit unitSignal name
Combination meterNavigation signal
 
 
DESCRIPTION
  • The Head Up Display (HUD) displays information on the vehicle speed and driving assistance system on the windshield glass, and supports safe driving by suppressing the burden due to the movement of the driver's eyes.
  • The Head Up Display unit receives necessary signals from each ECU via CAN communication and local communication.
 
 
Operation
  • When the ignition switch is ON, pushing the main switch activates Head Up Display.
  • Head Up Display projects display on the windshield glass.
  • Image focus on 2.1 m (6.89 ft) from driver's eye point.
Head Up Display unitWindshield glass
Eye pointVirtual image display
C.2.1 m (6.89 ft)
 
 
Structure
The Head Up Display unit projects the image to the windshield glass by reflecting the image of the TFT liquid crystal display on the concave mirror. Also, by manipulating the angle of the concave mirror, the projection position on the windshield glass can be adjusted.
Head Up Display unitConcave mirrorConcave mirror
TFT liquid crystal display
: Projection path
 
 
Display Item
  • The Head Up Display (HUD) can display one or more of the following features.
  • The Head Up Display unit can cause an interrupt on the HUD display to indicate a warning, based on signals received from each unit.
No.DisplayDescription
Message display
  • Displays various information for the driver
  • Displays the operation request when the MI-PILOT Assist system is operating
Vehicle speed displayAlways display the vehicle speed
Driving AidsASCD displayDisplays setting vehicle speed during ASCD operation
ACC displayDisplays information on setting vehicle speed and presence/absence of preceding vehicle during ACC operation
MI-PILOT Assist system displayDisplays setting MI-PILOT Assist system status during MI-PILOT Assist system operation
LDW system displayDisplays LDW system display during LDW system operation
LDP system displayDisplay LDP system display during LDP system operation
PFCW system displayDisplay PFCW display during PFCW operation
Turn by Turn displayDisplay arrows at intersection with navigation guidance and guide traveling direction
TSR system displayDisplay TSR system display during TSR system operation
Interrupt displayMI-PILOT Assist system warning displayDisplay MI-PILOT Assist system display during MI-PILOT Assist system operation
AEB warning displayDisplay AEB warning display during AEB operation
Turn by Turn displayDisplay arrows at intersection with navigation guidance and guide traveling direction
Audio operation displayDisplay audio operation display during audio switch operation
note
  • The items displayed depend on vehicle specifications.
  • When the ignition switch is turned ON, only vehicle speed is displayed.
  • Emergency information may display even if the Head Up Display is turned off.
  • The display position, display rotation, display brightness, and display setting adjustment of the Head Up Display can be set on the setting screen of the combination meter. Refer to Switch Name and Function.
 
 
Automatic Dimming Function
The Head Up Display unit reads the illuminance sensor value and adjusts the brightness of the display automatically.
noteThe brightness of the display can be manually adjusted on the combination meter setting screen. Refer to Switch Name and Function.