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Home > Driving your vehicle > Reverse Parking Collision-Avoidance Assist (PCA) > Limitations of the System

Limitations of the System

Reverse Parking Collision-Avoidance Assist system may not assist braking or alert the driver under the following conditions even if there are pedestrians or objects.

  • Any non-factory equipment or accessories have been installed.

  • The condition of the vehicle is unstable due to an accident or other causes.

  • The height of the bumper or the sensor installation has been modified.

  • The rear view camera or the ultrasonic sensor(s) is damaged.

  • The rear view camera or the ultrasonic sensor(s) is stained with foreign matter, such as snow, dirt, etc.

  • The rear view camera is obscured by a light source or by bad weather conditions, such as heavy rain, fog, snow, etc.

  • The surrounding is either too dark or too bright.

  • Outside air temperature is hot or cold.

  • The wind is either strong (over 12 mph (20 km/h)) or blowing perpendicular to the rear bumper.

  • Objects generating excessive noise, such as vehicle horns, loud motorcycle engines, or truck air brakes, are near the vehicle.

  • An ultrasonic sensor with a similar frequency is near the vehicle.

  • There is ground height difference between the vehicle and the pedestrian.

  • The image of the pedestrian in the rear view camera is indistinguishable from the background.

  • The pedestrian is near the rear edge of the vehicle.

  • The pedestrian is not standing upright.

  • The pedestrian is either too short or too tall for the system to recognize.

  • The pedestrian is wearing clothes that are hard for the system to recognize.

  • The pedestrian is wearing a cloth that does not reflect ultrasound well.

  • The size, thickness, height, or shape of the object does not reflect ultrasound well (e.g., pole, bush, curbs, carts, edge of a wall, etc.).

  • The pedestrian or the object is moving.

  • The pedestrian or the object is very close to the rear of the vehicle.

  • A wall is behind the pedestrian or the object.

  • The object is not at the rear center of the vehicle.

  • The plane of the obstacle is not parallel to the rear bumper.

  • The road is slippery or inclined.

  • The driver backs up the vehicle immediately after shifting to R (Reverse).

  • The driver accelerates or turns the vehicle.

  • Reverse Parking Collision-Avoidance Assist system may alert the driver or apply brake power unnecessarily under the following conditions even if there are "no" pedestrians or objects.

  • Any non-factory equipment or accessories have been installed.

  • The condition of the vehicle is unstable due to an accident or other causes.

  • The height of the bumper or the sensor installation has been modified.

  • The bumper height has changed due to heavy loads, tire pressure change, etc.

  • The rear view camera or the ultrasonic sensor(s) is stained with foreign matter, such as snow, dirt, etc.

  • The pattern on the road is mistaken for a pedestrian.

  • There is a shadow or a light reflecting on the ground.

  • Pedestrians or objects are around the path of the vehicle.

  • Objects generating excessive noise, such as vehicle horns, loud motorcycle engines, or truck air brakes, are near the vehicle.

  • The vehicle is backing towards a narrow passage or parking space.

  • The vehicle is backing towards an uneven road surface, such as unpaved road, gravel, bump, gradient, etc.

  • A trailer is attached to the vehicle.