LEXUS PARKING ASSIST-SENSOR SYSTEM


  1. OUTLINE


    1. The LEXUS parking assist-sensor system uses ultrasonic sensors to detect obstacles at the corners, or the rear of the vehicle.

    2. The LEXUS parking assist-sensor system informs the driver of the approximate distance between the sensors and any obstacles as well as their positions by displaying them on the multi-information display in the combination meter assembly or the multi-display* and by sounding the clearance warning buzzer.


      • *: Models with Lexus display audio system or navigation system

  2. MAJOR DIFFERENCE


    1. The new models have been modified from the previous models as shown below:


      1. The clearance warning ECU assembly and No. 1 ultrasonic sensor have been changed.

      2. The image, which appears on the multi-display* when the LEXUS parking assist-sensor system detects an object, has been changed.


        • *: Models with Lexus display audio system or navigation system

      3. The optitron type combination meter assembly with color type multi-information display has been added.

  3. PRECAUTION


    1. The detection function of the LEXUS parking assist-sensor system may not operate properly in the following conditions:


      1. When ice, snow or mud gets on the sensors. If the material is removed, the system will work properly.

      2. When a sensor is frozen. If the sensor is no longer frozen, the system will work properly.

      3. When the sensor is covered with something. If the material is removed, the system will work properly.

    2. Especially in cold weather, a malfunction warning may occur (the buzzer may sound) due to frozen sensors. If the malfunction warning occurs, be sure to check the sensors. If there is no mud, ice or snow on the sensors, a sensor may be malfunctioning.

    3. In the following conditions, the detection range may be affected:


      1. When foreign matter such as snow or mud is attached to a sensor.

      2. When the vehicle is operated under the hot sun or in a freezing climate.

    4. The system may improperly detect obstacles in the following conditions:


      1. When the vehicle is being driven on bumpy road, gravel road, or on grass.

      2. When the sound of horns from other vehicles, the sound of a motorcycle engine, the sound of the air brakes of a large truck, or an object that generates ultrasonic waves is in the vicinity.

      3. When there is a downpour, or water is splashing on the vehicle.

      4. When the vehicle posture tilts significantly.

      5. When an antenna for a wireless transmitter is mounted on the vehicle.

      6. When the sensors are covered with foreign matter such as ice, snow or mud.

      7. When the vehicle travels alongside a tall curb or a square curb.

      8. When other vehicles with sonar are near.

      9. When a towing hitch is mounted on the vehicle.

      10. When the bumper is damaged.

    5. There are cases in which the objects listed below cannot be detected:


      1. Thin objects such as wire or rope.

      2. Objects with surfaces that are too small to reflect ultrasonic waves such as a wire fence or gauze.

      3. Objects that absorb sound waves such as cotton or snow.

      4. Objects that have sharp edges.

      5. Objects that are short.

      6. Objects that are tall and protrude at the top.

    6. Others


      1. Objects directly underneath the bumpers cannot be detected. Some objects located lower than the sensors, or thin objects, may not be detected as the vehicle comes close to these objects.

      2. An object might not be detected if the vehicle is too close.

      3. The sensors might not detect properly if they are exposed to strong shocks such as when being struck or having objects thrown at them.