Precautions For The Handling Of Sonar System
WARNING: This page is about a different car, the 2019 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.
- Ultrasonic sensors detect an obstacle by using strong reflected waves (echo) reflected from the obstacle. For this reason, an obstacle may not be detected properly if any of the following item applies:
- Soft and air-containing object, such as cloth, cotton, glass wool, dust, and snow.
- Slanted slick object.
- Angle of an angular object.
- Thin object, such as rope, chain, and wire
- Fast-moving small animal
- The detection may be unstable due to irregular reflection when any of the following conditions is satisfied:
- Object with rough surface, such as rock, stone, and gravel.
- Close to an object emitting sonic waves or electromagnetic waves.
- The surface of sensor is frozen, snow-covered, dirty, or wet.
- Extremely close to an obstacle [Approximately 20 cm (7.87 in) or less is the physical limit of obstacle detection by supersonic waves.]
- Under severe weather conditions, such as heavy snow, heavy rain, and strong wind.
- The vehicle is left stand under the hot sun or in a cold climate area for a long time.