ADAPTIVE HIGH BEAM SYSTEM SYSTEM DESCRIPTION


  1. ADAPTIVE HIGH BEAM SYSTEM


    1. The adaptive high beam system uses the forward recognition camera to detect the lights of vehicles ahead and to determine the brightness of the surrounding area in order to optimally control the high beams to prevent dazzling other drivers. The current supplied to the LED array inside each headlight unit is controlled to alter the brightness and illuminated area.

    2. Function of Main Components

      Component Outline
      Forward Recognition Camera Captures an image of the area in front of the vehicle and uses the image to determine the position of preceding and oncoming vehicles and to determine the brightness of the surrounding area. This data is then sent to the headlight ECU sub-assembly LH.
      Combination Meter Assembly

      • Sends the state of the integration control and panel assembly (adaptive high beam switch) to the headlight ECU sub-assembly.

      • Displays "To Activate AHS, Switch Headlights to High Beam" on multi-information display in accordance with the signal from the headlight ECU sub-assembly LH.

      • Illuminates the adaptive high beam indicator in accordance with the adaptive high beam indicator request signal from the headlight ECU sub-assembly LH.

      • Displays a warning on the multi-information display when an adaptive high beam system malfunction signal is sent from the headlight ECU sub-assembly LH.

        Tech Tips


        • When an adaptive high beam system malfunction is detected, the adaptive high beam indicator light turns off and "Headlight System Malfunction Visit Your Dealer" warning message is displayed on the multi-information display.

        • The adaptive high beam indicator light illuminates to inform the driver when the adaptive high beam system is active.
      Headlight ECU Sub-assembly LH

      • Receives signals from the integration control and panel assembly (adaptive high beam switch) and various ECUs to control the adaptive high beam system based on other vehicles and the conditions of the surrounding area.

      • Sends a request to the combination meter assembly to display a warning when a malfunction is detected in the adaptive high beam system.

      • Controls the headlight light control ECU sub-assembly power supply.

      • Based on information of vehicles detected in front of the vehicle, sends the requested current value and switching time for the LED array of each headlight unit.
      Headlight ECU Sub-assembly RH Receives signals from the headlight ECU sub-assembly LH to perform adaptive high beam system control of the headlight assembly RH.
      Headlight Light Control ECU Sub-assembly Controls the output of the high beams via current and illumination request signals.
      Main Body ECU (Multiplex Network Body ECU)

      • Sends the status of the light control switch to the headlight ECU sub-assembly LH.

      • Sends an illumination request signal to the headlight ECU sub-assembly LH.
      Integration Control and Panel Assembly (Adaptive High Beam Switch) Outputs an ON/OFF signal to the headlight ECU sub-assembly LH.
      Brake Actuator Assembly (Skid Control ECU) Transmits a speed sensor signal to the headlight ECU sub-assembly LH.
      Steering Sensor Transmits a steering angle signal to the headlight ECU sub-assembly LH.
      Headlight Leveling Motor Receives signals from the headlight ECU sub-assembly to control the level of headlight beam.
      Rear Height Control Sensor Sub-assembly RH Transmits a vehicle height signal to the headlight ECU sub-assembly LH.
      ECM Transmits engine running status signals and vehicle information signals to the headlight ECU sub-assembly LH.

    3. Initial Set Control

      When the engine is started, the headlight ECU sub-assembly LH turns on the inner, center and outer high beam LED arrays of each headlight unit sequentially to confirm that the adaptive high beam system is normal.