Toyota Prius: Parking Support Brake function (static objects to the front and rear/static objects around the vehicle)

The Parking Support Brake (PKSB) function in the 2024 Toyota Prius is designed to enhance safety during parking by detecting static objects both in front and behind the vehicle. Using sensors, PKSB identifies potential obstacles such as walls, poles, or other vehicles. If a collision is imminent, the system alerts the driver with visual and auditory warnings and can automatically apply the brakes to prevent or mitigate an impact.

This advanced feature adds an extra layer of safety and convenience, making parking in tight or crowded spaces easier and reducing the risk of minor collisions. PKSB underscores Toyota's commitment to incorporating cutting-edge safety technologies to protect drivers, passengers, and pedestrians.

• Examples of function operation (static objects to the front and rear)
• Types of sensors

Examples of function operation (static objects to the front and rear)

If the sensors detect a static object, such as a wall, in the traveling direction of the vehicle and the system determines that a collision may occur due to the vehicle suddenly moving forward due to an accidental accelerator pedal operation, the vehicle moving the unintended direction due to the wrong shift position being selected, or while parking or traveling at low speeds, the system will operate to lessen the impact with the detected static object and reduce the resulting damage.

Examples of function operation (static objects to the front and rear)

This function will operate in situations such as the following if an object is detected in the traveling direction of the vehicle.

When traveling at a low speed and the brake pedal is not depressed, or is depressed late

When the accelerator pedal is depressed excessively

When the vehicle moves forward due to the incorrect shift position being selected

Examples of function operation (static objects around the vehicle) (vehicles with Advanced Park)

The system will operate in the following situations when a stationary object is detected in the surrounding area.

When moving forward and a collision with a stationary object on the inner side of a turn is likely

When reversing and a collision with a stationary object on the outer side of a turn is likely

Types of sensors

WARNING

To ensure the system can operate properly

If the PKSB (Parking Support Brake) operates unnecessarily, such as at a railroad crossing

Notes when washing the vehicle

The Parking Support Brake function (static objects to the front and rear) will operate when

The function will operate when the driving assist information indicator is not illuminated and all of the following conditions are met:

• Hybrid system output restriction control

• The Parking Support Brake is enabled.
• The vehicle speed is approximately 9 mph (15 km/h) or less.
• There is a static object in the traveling direction of the vehicle and approximately 6 to 13 ft. (2 to 4 m) away.
• The Parking Support Brake determines that a stronger-than-normal brake operation is necessary to avoid a collision.

• Brake control

• Hybrid system output restriction control is operating
• The Parking Support Brake determines that an immediate brake operation is necessary to avoid a collision.

The Parking Support Brake function (static objects around the vehicle)* will operate when

*: Vehicles with Advanced Park

This function is operable when any of the following conditions are met in addition to the operating conditions for stationary objects in around the vehicle.

• After the hybrid system has been started, the vehicle has moved approximately 23.0 ft. (7 m) or less
• The R shift position is selected
• After the shift position has been changed from R to D, the vehicle has moved approximately 23.0 ft. (7 m) or less

The Parking Support Brake function (static objects to the front and rear/static objects around the vehicle*) will stop operating when

*: Vehicles with Advanced Park

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 system determines that the collision has become avoidable with normal brake operation.
• The static object is no longer approximately 6 to 13 ft. (2 to 4 m) away from the vehicle or in the traveling direction of the 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 static object is no longer approximately 6 to 13 ft. (2 to 4 m) away from the vehicle or in the traveling direction of the vehicle

Detection range of the Parking Support Brake function (static objects to the front and rear/static objects around the vehicle*)

*: Vehicles with Advanced Park

The detection range of the Toyota Prius' Parking Support Brake (PKSB) function for static objects in front, behind, and around the vehicle differs from the detection range of its intuitive parking assist system. Consequently, even if the intuitive parking assist detects an object and provides a warning, the PKSB function may not activate.

Situations in which the system may not operate properly

Situations in which the system may operate even if there is no possibility of a collision

Situations in which the system may operate even though there is no possibility of a collision (static objects around the vehicle) (vehicles with Advanced Park)

In addition to the situations in which stationary objects front and rear  may not be detected, objects may not be detected by the sensors in the following situations:

• When moving sideways, such as when parallel parking

Detection of objects along the sides of the vehicle (static objects around the vehicle) (vehicles with Advanced Park)

• Objects along the sides of the vehicle are not instantaneously detected. The location of objects in relation to the vehicle is estimated after they are first detected by the front or rear side sensors, or side cameras. Therefore, after the power switch is changed to ON, even if an object is along the side of the vehicle, it may not be detected until the vehicle has been driven a small amount and the side sensors or side cameras completely scan the areas along the sides of the vehicle.
• If a vehicle, person, animal, etc., is detected by a side sensors or side cameras, but then leaves the detection area of the side sensors or side cameras, the system will assume the object has not moved.

PKSB (Parking Support Brake)Parking Support Brake function (rear-crossing vehicles)