LANE DEPARTURE ALERT SYSTEM SYSTEM DESCRIPTION

  1. LANE DEPARTURE ALERT SYSTEM DESCRIPTION

    1. When driving on roads with white (or yellow) lines, when the system determines that the vehicle may deviate from the current driving lane, it informs the driver of the potential deviation with a buzzer and a display on the combination meter assembly.

    2. The system is equipped with a last memory function, which stores the switch condition when the engine stops and allows the system to begin in that condition when the engine is started again.

  2. FUNCTION OF COMPONENTS

    Component

    Function

    Pre-crash Safety City Sensor

    • Acquires information about the road ahead from a monocular camera sensor and controls the lane departure alert system.

    • Sends signals to display information on the multi-information display in the combination meter, illuminate the lane departure alert indicator light and sound the meter buzzer based on lane departure alert system control information.

    • Determines the condition of the lane departure alert switch.

    Lane Departure Alert Switch

    Turn the lane departure alert system on/off.

    Combination Meter Assembly

    • Displays the control condition (ON/OFF) and warning sensitivity of the lane departure alert system.

    • During a system malfunction, warns the driver by displaying a message in the multi-information display according to the nature of the problem in the system, illuminating the master warning light and sounding the meter buzzer.

    • Sends the meter tolerance values and turn signal condition to the pre-crash safety city sensor.

    Brake Actuator Assembly (Skid Control ECU)

    Sends the wheel speed signals to the pre-crash safety city sensor.

    Spiral Cable with Sensor Sub-assembly (Steering Sensor)

    Detects the steering angle and steering direction.

    Airbag Sensor Assembly (Yaw Rate and Acceleration Sensor)

    Detects the yaw rate and acceleration of the vehicle and transmits signals to the pre-crash safety city sensor.

  3. LANE DEPARTURE ALERT SYSTEM CONTROL

    1. Lane departure alert system start-up conditions

      1. The lane departure warning function operates when the following conditions are met.

        System Start-up Conditions

        Lane departure alert switch ON

        Vehicle speed within operating range for lane departure alert system

        Lane recognized

        Turn signals not being operated

        No system malfunctions detected

    2. Lane departure alert system operation conditions

      1. The lane departure alert system operates while the vehicle is in the following conditions.

        System Operation Conditions

        Operating speed

        Approximately 50 km/h (31 mph) or more

        Operating lane width

        Approximately 3.0 m (9.84 ft.) or more

        Operating radius

        On a straight road or slight curve (with a radius of approximately 150 m (492 ft.) or more)

    3. Temporary function cancellation during lane departure alert system operation

      1. The lane departure alert system is temporarily canceled when the following conditions (cancellation conditions) are detected.

      2. The lane departure alert system restarts when the following conditions (recovery conditions) are met.

        Cancellation Conditions

        Recovery Conditions

        Vehicle speed outside operating range for lane departure alert system

        Vehicle speed within operating range for lane departure alert system

        Turn signals being operated

        Turn signals not being operated

        Lane not recognized

        Lane recognized

        Immediately after lane departure alert sounds

        In-lane driving recognized several seconds after lane departure alert operates

    4. Lane departure alert system stop/restart

      1. The lane departure alert system stops when the following conditions (stop conditions) are detected.

      2. The lane departure alert system restarts when the following conditions (restart conditions) are met.

        Stop Conditions

        Restart Condition

        Lane departure alert switch OFF

        Lane departure alert switch ON

        Lane departure alert system temporarily canceled

        Normal condition confirmed

        Lane departure alert system malfunction detected

        • Normal condition confirmed after engine start-up

        • Recovered from communication malfunction between pre-crash safety city sensor and connected ECU

        • Recovered from other malfunction between pre-crash safety city sensor and connected ECU
        Tip:

        For the fail-safe of the lane departure alert system

        Click here