Lexus ES manuals

Lexus ES: PKSB (Parking Support Brake)

The Parking Support Brake system consists of the following functions that operate when driving at a low speed or backing up, such as when parking. When the system determines that the possibility of a collision with a detected object or pedestrian is high, a warning operates to urge the driver to take evasive action. If the system determines that the possibility of a collision with a detected object or pedestrian is extremely high, the brakes are automatically applied to help avoid the collision or help reduce the impact of the collision.

PKSB (Parking Support Brake) system

■ Parking Support Brake function (static objects) Ultrasonic sensors are used to detect static objects, such as a wall, in the detection area when driving at a low speed or backing up.

■ Parking Support Brake function (rear-crossing vehicles) (if equipped) Rear radar sensors are used to detect approaching vehicles in the detection area behind the vehicle when backing up.

■ Parking Support Brake function (rear pedestrians) (if equipped) A rear camera sensor is used to detect pedestrians in the detection area behind the vehicle when backing up.

WARNING

■Limitations of the Parking Support Brake system Do not overly rely on the system, as doing so may lead to an accident.

NOTICE

■If "Parking Support Brake Unavailable" is displayed on the multi-information display and the PKSB OFF indicator is flashing If this message is displayed immediately after the power switch is changed to ON mode, operate the vehicle carefully, paying attention to your surroundings. It may be necessary to drive the vehicle for a certain amount of time before the system returns to normal. (If the system is not return to normal after driving for a while, clean the rear camera lens.)

Enabling/Disabling the Parking Support Brake

The Parking Support Brake can be enabled/disabled on the multi-information display. All of the Parking Support Brake functions (static objects, rear-crossing vehicles, and rear pedestrians) are enabled/disabled simultaneously.

Use the meter control switches to enable/disable the parking support brake.

1. Press or to select .

2. Press or to select and then press "OK".

When the Parking Support Brake is disabled, the PKSB OFF indicator illuminates on the multi-information display.

To re-enable the system, select on the multi-information display, select and turn it on. If the system is disabled, it will remain off even if the power switch is turned to ON mode after the power switch has been turned off.

Displays and buzzers for hybrid system output restriction control and brake control

If the hybrid system output restriction control or brake control operates, a buzzer will sound and a message will be displayed on the Center Display and multi-information display, to alert the driver. On vehicles with a head-up display, the head-up display will display the same message as the multi-information display.

Depending on the situation, hybrid system output restriction control will operate to either limit acceleration or restrict output as much as possible.

Acceleration greater than a certain amount is restricted by the system.

Center Display (Panoramic view monitor): No warning displayed

Multi-information display: "Object Detected Acceleration Reduced"

PKSB OFF indicator: Not illuminated

Buzzer: Does not sound

The system has determined that strongerthan- normal brake operation is necessary.

Center Display (Panoramic view monitor): "BRAKE!"

Multi-information display: "BRAKE!"

PKSB OFF indicator: Not illuminated

Buzzer: Short beep

The system determined that emergency braking is necessary.

Center Display (Panoramic view monitor): "BRAKE!"

Multi-information display: "BRAKE!"

PKSB OFF indicator: Not illuminated

Buzzer: Short beep

The vehicle has been stopped by brake control operation.

Center Display (Panoramic view monitor): "Press Brake Pedal"

Multi-information display: "Switch to Brake" (If the accelerator pedal is not depressed, "Press Brake Pedal" will be displayed.)

PKSB OFF indicator: Illuminated

Buzzer: Short beep

System overview

If the Parking Support Brake determines that a collision with a detected object or pedestrian is possible, the hybrid system output will be restricted to restrain any increase in the vehicle speed. (Hybrid system output restriction control: See figure 2 below.)

Additionally, if the accelerator pedal continues to be depressed, the brakes will be applied automatically to reduce the vehicle speed. (Brake control: See figure 3 below.)

Lexus ES. Using the driving support systems

  1. Hybrid system output
  2. Braking force
  3. Time

Lexus ES. Using the driving support systems

  1. Hybrid system output
  2. Braking force
  3. Time
  4. Hybrid system output restriction control begins operating
  5. System determines that possibility of collision with detected object is high
  6. Hybrid system output reduced
  7. Example: Multi-information display: "BRAKE!"

Lexus ES. Using the driving support systems

  1. Hybrid system output
  2. Braking force
  3. Time
  4. Hybrid system output restriction control begins operating
  5. System determines that possibility of collision with detected object is high
  6. Hybrid system output reduced
  7. System determines that possibility of collision with detected object is extremely high
  8. Brake control begins operating
  9. Brake control strength increased
  10. Example: Multi-information display: "BRAKE!"
  11. Example: Multi-information display: "Switch to Brake"

■If the Parking Support Brake has operated If the vehicle is stopped due to operation of the Parking Support Brake, the Parking Support Brake will be disabled and the PKSB OFF indicator will illuminate. If the Parking Support Brake operates unnecessarily, brake control can be canceled by depressing the brake pedal or waiting for approximately 2 seconds for it to automatically be canceled. Then, the vehicle can be operated by depressing the accelerator pedal.

■Re-enabling the Parking Support Brake To re-enable the Parking Support Brake when it has been disabled due to system operation, perform any of the following operations. At this time, the PKSB OFF indicator will turn off.

*: Except the Parking Support Brake function (rear pedestrian)

■If "Parking Support Brake Unavailable" is displayed on the multi-information display and the PKSB OFF indicator is flashing

■If "Parking Support Brake Unavailable" and "Parking Assist Unavailable Clean Parking Assist Sensor" are displayed on the multi-information display and the PKSB OFF indicator is flashing

■If a 12-volt battery terminal has been disconnected and reconnected The system needs to be initialized. To initialize the system, drive the vehicle straight ahead for 5 seconds or more at a speed of approximately 22 mph (35 km/h) or more.

Additionally, for vehicles with the Parking Support Brake function, turn the steering wheel fully to the left and right with the vehicle stopped.

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