Lexus ES: Parking Support Brake function (rear pedestrians)

If the rear camera sensor detects a pedestrian behind the vehicle while backing up and the system determines that the possibility of colliding with the detected pedestrian is high, a buzzer will sound. If the system determines that the possibility of colliding with the detected pedestrian is extremely high, the brakes will be applied automatically to help reduce the impact of the collision.

Examples of system operation

When a pedestrian is detected behind the vehicle while backing up, the brake pedal is not depressed or is depressed late.

Center Display

Displays a message to urge the driver to take evasive action when a pedestrian is detected in the detection area behind the vehicle. (A message will also be displayed on the multi-information display and head-up display (if equipped).)

1. Pedestrian detection icon
2. Brake reminder

WARNING

■If the Parking Support Brake function (rear pedestrians) operates unnecessarily Depress the brake pedal immediately after the Parking Support Brake function (rear pedestrians) operates. (Operation of the function is canceled by depressing the brake pedal.)

■In order to correctly use the Parking Support Brake function (rear pedestrians) Do not rely solely upon the system.

Depending on the road conditions, vehicle conditions, and weather conditions, etc., the system may not operate. The detection capability of the rear camera is limited. Always drive while confirming the safety of the surroundings of the vehicle.

Also, if the PKSB OFF indicator is flashing or the message indicating that the system is unavailable is displayed over the camera image, the system cannot be used. However, even if the indicator is not flashing or the message is not displayed, do not rely solely upon the system and make sure to always drive while directly confirming the safety of your surroundings.

■Parking Support Brake function (rear pedestrians) will operate when The function will operate when the PKSB OFF indicator is not illuminated or flashing and all of the following conditions are met:

• Hybrid system output restriction control
  • The Parking Support Brake is enabled.
  • The vehicle speed is 9 mph (15 km/h) or less.
  • The shift position is in R.
  • The rear camera sensor detects a pedestrian behind the vehicle while backing up and the system determines that the possibility of colliding with the detected pedestrian is high.
• Brake control
  • Hybrid system output restriction control is operating.
  • The Parking Support Brake determines that an emergency brake operation is necessary to avoid a collision with a pedestrian.

■The Parking Support Brake function (rear pedestrians) will stop operating when

The function will stop operating if any of the following conditions are met:

• Hybrid system output restriction control
  • The Parking Support Brake is disabled.
  • The collision becomes avoidable with normal brake operation.
  • The pedestrian is no longer detected behind your vehicle.
• Brake control
  • The Parking Support Brake is disabled.
  • Approximately 2 seconds have elapsed since the vehicle was stopped by brake control.
  • The brake pedal is depressed after the vehicle is stopped by brake control.
  • The pedestrian is no longer detected behind your vehicle.

■Detection area of the Parking Support Brake function (rear pedestrians) The detection area of the Parking Support Brake function (rear pedestrians) differs from the detection area of the RCD function. Therefore, even if the RCD function detects a pedestrian and provides an alert, the Parking Support Brake function (rear pedestrians) may not start operating.

■Situations in which the system may not operate properly

• Some pedestrians, such as the following, may not be detected by the Parking Support Brake function (rear pedestrians), preventing the function from operating properly:
  • Pedestrians who are bending forward or squatting
  • Pedestrians who are lying down
  • Pedestrians who are running
  • Pedestrians who suddenly enter the detection area
  • People riding a bicycle, skateboard, or other light vehicle
  • Pedestrians wearing oversized clothing such as a rain coat, long skirt, etc., making their silhouette obscure
  • Pedestrians whose body is partially hidden by an object, such as a cart or umbrella
  • Pedestrians which are obscured by darkness, such as at night
• In some situations, such as the following, pedestrians may not be detected by the Parking Support Brake function (rear pedestrians), preventing the function from operating properly:
  • When backing up in inclement weather (rain, snow, fog, etc.)
  • When the rear camera is obscured (dirt, snow, ice, etc. are attached) or scratched
  • When a very bright light, such as the sun, or the headlights of another vehicle, shines directly into the rear camera
  • When backing up in a place where the surrounding brightness changes suddenly, such as at the entrance or exit of a garage or underground parking lot
  • When backing up in a dim environment such as during dusk or in an underground parking lot
• Even though there are no pedestrians in the detection area, some objects, such as the following, may be detected, possibly causing the Parking Support Brake function (rear pedestrians) to operate.
  • Three dimensional objects, such as a pole, traffic cone, fence, or parked vehicle
  • Moving objects, such as a car or motorcycle
  • Objects moving toward your vehicle when backing up, such as flags or puddles (or airborne matter, such as smoke, steam, rain, or snow)
  • Cobblestone or gravel roads, tram rails, road repairs, white lines, pedestrian crossings, puddles or fallen leaves on the road
  • Metal covers (gratings), such as those used for drainage ditches
  • Objects reflected in a puddle or on a wet road surface
  • The roadside or bumps on the road
  • Shadows on the road
• In some situations, such as the following, the Parking Support Brake function (rear pedestrians) may operate even though there are no pedestrians in the detection area.
  • When backing up toward the roadside or a bump on the road
  • If the vehicle is significantly tilted, such as when carrying a heavy load
  • When backing up toward an incline/decline
  • If the suspension has been modified or tires of a size other than specified are installed
  • If the rear of the vehicle is raised or lowered due to the carried load
  • If an electronic component, such as a backlit license plate or rear fog light, is installed near the rear camera
  • If a bumper protector, such as an additional trim strip, is installed to the rear bumper
  • If the orientation of the rear camera has been changed due to a collision or other impact, or removal and installation
  • If a towing eyelet is installed to the rear of the vehicle
  • When water is flowing over the rear camera lens
  • When the rear camera is obscured (dirt, snow, ice, etc. are attached) or scratched
  • If there is a flashing light in the detection area, such as the emergency flashers of another vehicle

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