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System Description [12/2019 - 11/2023]

  1. CASES OF UNNECESSARY PARKING SUPPORT BRAKE SYSTEM OPERATION 
    1. In the following situations, the parking support brake system may operate even when there is no possibility of a collision:
      1. Environmental influence
        • There is an obstacle on the shoulder of the road (when the vehicle is driven in a narrow tunnel, on a narrow bridge or on a narrow road).
          GTY594506Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • The vehicle is being driven on grass or a gravel road.
          GTY594505Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • The vehicle is driven toward a banner or flag, a low-hanging branch or a boom barrier (such as those used at railroad crossings, toll gates and parking lots).
          GTY610032Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

          HINT: 

          Even if the parking support brake system operates while on a railroad crossing, brake control will be automatically be canceled after approximately 2 seconds. Brake control can also be canceled by depressing the brake pedal. After brake control is canceled, depress the accelerator pedal to drive out of the railroad crossing.

        • The vehicle is close to other vehicles while being parallel parked.
          GTY594504Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • The vehicle is being driven on a steep slope.
          GTY594503Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • There are objects located lower than the ultrasonic sensors.
          GTY594502Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • The vehicle is being driven on a narrow road.
          GTY610089Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • There is a rut or hole in the surface of the road.
        • When the vehicle is driven on a metal cover (grating), such as those used for drainage ditches.
      2. Influence from the weather
        GTY594501Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • In severe weather such as fog, snow or a sandstorm.
        • Foreign matter such as snow, ice or mud is attached to an ultrasonic sensor. (The system returns to normal when the foreign matter is removed.)
        • When there is a downpour, or water is splashing on the vehicle.
        • Water is covering an ultrasonic sensor due to a flooded road.
      3. Influence from other ultrasonic waves
        • When ultrasonic waves are received from the horn or parking sonar system of another vehicle, a motorcycle engine, or the air brakes of a large vehicle.
        • Electronic components such as a backlit license plate (especially fluorescent types), fog lights, a fender pole or a wireless antenna are installed near an ultrasonic sensor.
      4. Changes in the vehicle.
        GTY594500Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • The height of the vehicle has drastically changed due to loading (the nose tilts up or down).
        • The vehicle is significantly tilted.
        • An ultrasonic sensor is misaligned due to a collision, etc.
      5. Others
        GTY594767Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • The vehicle is being loaded onto a ship, truck or other transport vessel.
        • The vehicle is being operated on a drum tester such as a speedometer tester, brake/speedometer combination tester or chassis dynamometer.
        • When the vehicle is being towed.
  2. CASES OF UNNECESSARY REAR CROSS TRAFFIC AUTO BRAKE FUNCTION OPERATION 
    1. In the following situations, the rear cross traffic auto brake function may operate even when there is no possibility of a collision:
      • When a vehicle is travelling along a road that is located extremely close to a parking space.
        GTY648814Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • When a vehicle is entering an adjacent parking space.
        GTY648801Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • When an object is passing extremely close to the vehicle.
        GTY648802Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • When there is a metal object behind the vehicle such as a guard rail, wall, traffic sign or parked vehicle that easily reflects radio waves.
        GTY626981Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. MULTI-INFORMATION DISPLAY AND HEADUP DISPLAY (w/ Headup Display System) 
    1. Parking support brake system display
      • The parking support brake system uses the multi-information display in the combination meter assembly, the meter mirror sub-assembly* and PKSB OFF indicator light to indicate the operation status of the system.
    2. Parking support brake system operation status display
      1. When the operation conditions are met, the clearance warning ECU assembly sends display or illumination request signals to the combination meter assembly, meter mirror sub-assembly* and PKSB OFF indicator light. The clearance warning ECU assembly also sends buzzer sound request signals to the combination meter assembly.
      1. *: w/ Headup Display System
      GTY864953Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Parking support brake system warning display
      1. When operation of the parking support brake system is temporarily suspended due to a malfunction or dirty ultrasonic sensor, a message is displayed on the multi-information display in the combination meter assembly, the PKSB OFF indicator light blinks and the buzzer sounds.
      GTY909352Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Parking support brake system off display
      1. When the parking support brake system is off, the PKSB OFF indicator light illuminates.
      GTY798146Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a PKSB OFF Indicator
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