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 oncoming vehicles 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 control computer assembly LH.
      Combination Meter Assembly

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

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

      • Illuminates the adaptive high beam indicator in accordance with the adaptive high beam indicator request signal from the headlight control computer assembly LH.

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

      • Sends an illumination request signal to the headlight control computer assembly LH.
      Integration Control and Panel Assembly (adaptive high beam switch) Outputs an ON/OFF signal to the headlight control computer assembly LH.
      Brake Actuator Assembly (Skid Control ECU) Transmits a speed sensor signal to the headlight control computer assembly LH.
      Steering Angle Sensor Transmits a steering angle signal to the headlight control computer assembly LH.
      Rear Height Control Sensor Sub-assembly LH Transmits a vehicle height signal to the rear height control sensor sub-assembly LH.
      ECM Sends engine running status signals and vehicle information signals to the headlight control computer assembly LH.

    3. Initial Set Control

      When the engine is started, the headlight control computer assembly LH drives the headlight leveling motor and moves the headlight reflector to the lower limit position and returns it to the proper position. Also, for vehicles equipped with an adaptive high beam system, the high beams are continuously illuminated from the inside of the triple beam headlight.