AUTOMATIC HIGH BEAM SYSTEM SYSTEM DESCRIPTION


  1. AUTOMATIC HIGH BEAM SYSTEM


    1. The automatic high beam system detects light in front of the vehicle using the camera built into the pre-crash safety city sensor and switches between high and low beams automatically.

      Note

      The automatic high beam system may not operate normally due to the following factors.

      Cause Details
      Weather Bad weather (fog, snow, sandstorm, heavy rain, etc.).
      Windshield

      • Windshield is dirty (dirt, water spots, insects) or fogged up.

      • Windshield is cracked or damaged.
      Pre-crash safety city sensor

      • Pre-crash safety city sensor is deformed or dirty.

      • Pre-crash safety city sensor is not installed correctly.
      Nearby vehicles and light

      • Oncoming or preceding vehicle lights are not illuminated.

      • Oncoming or preceding vehicle lights are dirty or discolored.

      • Only one of the oncoming or preceding vehicle lights is illuminated, or the vehicle is a motorcycle.

      • Beam axis of oncoming vehicle lights is not aligned.

      • Ambient light is similar to headlights or taillights.

      • A highly reflective object is in the rear of the preceding vehicle (shipping container, etc.).

      • A light vehicle, such as a bicycle, has been detected.

      • Continual sudden changes in brightness.
      Road conditions

      • Repeated driving on a road with large differences in elevation.

      • Repeated driving on a road with many curves or driving on a road with sharp curves.

      • Driving on a rough road (gravel road, unpaved road, etc.)

      • There is a sign, mirror, or other highly reflective object in front of the vehicle.
      Driver's vehicle

      • Driver's vehicle has damaged or dirty headlights.

      • Vehicle is not level due to the number of passengers, load weight, flat tire or towing.
      Automatic high beam system Automatic high beam indicator light in the combination meter assembly is off.

    2. Basic operation


      1. A01UXJ9E07
        Text in Illustration
        *a Automatic High Beam Indicator Light

        When all of the following conditions are met, the automatic high beam system enters standby mode, and the automatic high beam indicator light in the combination meter assembly illuminates in green.


        • Ignition switch ON (IG).

        • Low beam headlights are illuminated with the light control switch set to AUTO or HEAD

        • Dimmer switch set to HI BEAM

        • Auto high beam switch is ON.

        • Shift lever is not in R.

        Note

        If the pre-crash safety city sensor cannot correctly recognize the area in front of the vehicle due to bad weather (dense fog, etc.) or obstructions, the automatic high beam indicator light in the combination meter assembly may not illuminate, and the automatic high beam system may not operate.

      2. When all of the following conditions are met in automatic high beam system standby mode, the low beams change to high beams automatically after a slight delay.


        • Vehicle speed 40 km/h (25 mph) or higher

        • Front of vehicle is dark

        • No oncoming vehicle with illuminated headlights

        • No preceding vehicle with illuminated taillights

        • Low city lighting

        Note

        The low beams may not change to high beams due to illumination from city lighting, traffic lights or billboards, or due to reflective surfaces, such as signs or signboards.

      3. When any of the following conditions are met during operation of the automatic high beam system (high beams illuminated), the high beams change to low beams automatically.


        • Vehicle speed below 30 km/h (19 mph)

        • Front of vehicle is bright

        • Oncoming vehicle with illuminated headlights

        • Preceding vehicle with illuminated taillights

        • Abundant city lighting

        Note


        • The high beams may change to low beams due to illumination from city lighting, traffic lights or billboards, or due to reflective surfaces, such as signs or signboards.

        • The high beams may change to low beams due to the fog lights of an oncoming vehicle.

        • Under the following conditions, the high beams may not change to the low beams.


          • Passing an oncoming vehicle on a curve.

          • Preceding or oncoming vehicle appears and disappears on continuous curves.

          • Preceding or oncoming vehicle appears and disappears due to the median, roadside trees, or other obstacles.

          • Another vehicle cuts in front of the vehicle.

      4. When any of the following conditions are met, the automatic high beam system is canceled, and the automatic high beam indicator light in the combination meter assembly turns off.


        • Ignition switch off

        • Light control switch not in AUTO or HEAD position

        • Low beam headlights are not illuminated

        • Dimmer switch set to LO BEAM

        • Auto high beam switch is turned off