TOYOTA PARKING ASSIST-SENSOR SYSTEM


  1. CONSTRUCTION


    1. When the No. 1/No. 2/No. 3 ultrasonic sensor transmits ultrasonic waves and receives the reflected waves from an obstacle, the buzzer sounds in stages in accordance with the distance to the obstacles.

      Figure 1. No. 1 Clearance Warning Buzzer (Front)

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      Figure 2. No. 2 Clearance Warning Buzzer (Rear)

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  2. OPERATION


    1. Depending on the detection distance and the detection area, the sound pattern of the No. 1 clearance warning buzzer will vary.

      Detection Area Detection Distance (mm (in.)) Buzzer Sound Pattern
      On (msec.) Off (msec.)
      Front Corner Long 500 +/- 50 to 375 +/- 37.5 (19.7 +/- 2.0 to 14.8 +/- 1.5) 150 +/- 15 150 +/- 15
      Middle 375 +/- 37.5 to 250 +/- 25 (14.8 +/- 1.5 to 9.8 +/- 1.0) 75 +/- 7.5 75 +/- 7.5
      Short 250 +/- 25 or less (9.8 +/- 1.0 or less) Continuous Sound 0
      Front Center Longest 1000 +/- 100 to 550 +/- 55 (39.4 +/- 3.9 to 21.7 +/- 2.2) 150 +/- 15 650 +/- 15
      Long 550 +/- 55 to 425 +/- 42.5 (21.7 +/- 2.2 to 16.7 +/- 1.7) 150 +/- 15 150 +/- 15
      Middle 425 +/- 42.5 to 300 +/- 30 (16.7 +/- 1.7 to 11.8 +/- 1.2)*1 75 +/- 7.5 75 +/- 7.5
      425 +/- 42.5 to 250 +/- 25 (16.7 +/- 1.7 to 9.8 +/- 1.0)*2
      Short 300 +/- 30 or less (11.8 +/- 1.2 or less)*1 Continuous Sound 0
      250 +/- 25 or less (9.8 +/- 1.0 or less)*2
      Front Side Short 250 +/- 25 or less (9.8 +/- 1.0 or less) Continuous Sound 0

      *1: While the simple-intelligent parking assist system is not operating

      *2: While the simple-intelligent parking assist system is operating

    2. Depending on the detection distance and the detection area, the sound pattern of the No. 2 clearance warning buzzer will vary.

      Detection Area Detection Distance (mm (in.)) Buzzer Sound Pattern
      On (msec.) Off (msec.)
      Rear Corner Long 500 +/- 50 to 375 +/- 37.5 (19.7 +/- 2.0 to 14.8 +/- 1.5) 150 +/- 15 150 +/- 15
      Middle 375 +/- 37.5 to 250 +/- 25 (14.8 +/- 1.5 to 9.8 +/- 1.0) 75 +/- 7.5 75 +/- 7.5
      Short 250 +/- 25 or less (9.8 +/- 1.0 or less) Continuous Sound 0
      Rear Center Longest 1500 +/- 150 to 550 +/- 55 (59.1 +/- 5.9 to 21.7 +/- 2.2) 150 +/- 1.5 650 +/- 65
      Long 550 +/- 55 to 425 +/- 42.5 (21.7 +/- 2.2 to 16.7 +/- 1.7) 150 +/- 1.5 150 +/- 1.5
      Middle 425 +/- 42.5 to 300 +/- 30 (16.7 +/- 1.7 to 11.8 +/- 1.2)*1 75 +/- 7.5 75 +/- 7.5
      425 +/- 42.5 to 250 +/- 25 (16.7 +/- 1.7 to 9.8 +/- 1.0)*2
      Short 300 +/- 30 or less (11.8 +/- 1.2 or less)*1 Continuous Sound 0
      250 +/- 25 or less (9.8 +/- 1.0 or less)*2

      *1: While the simple-intelligent parking assist system is not operating

      *2: While the simple-intelligent parking assist system is operating

    3. When a sensor malfunction is detected or a sensor is frozen or dirty, the buzzer sounds 5 times according to the following timing:

      A01KE15E05

    4. The No. 1/No. 2/No. 3 ultrasonic sensors are divided into 2 groups: a front section group (front corners, front center and front sides) and a rear section group (rear corners and rear center). If multiple No. 1/No. 2/No. 3 ultrasonic sensors detect obstructions at the same time, the No. 1/No. 2 clearance warning buzzer sounds as follows, in accordance with the detection distance and detection area of each group:

      Buzzer Sound Pattern ON/OFF Time (msec.)
      Detection Distance Front Section
      Short Middle Long Longest Not detected
      Rear Section Short Timing 1 Continuous Sound (Rear) Continuous Sound (Rear) Continuous Sound (Rear) Continuous Sound (Rear)
      Middle Continuous Sound (Front) 75/75 (*) 75/75 (Rear) 75/75 (Rear) 75/75 (Rear)
      Long Continuous Sound (Front) 75/75 (Front) 150/150 (*) 150/150 (Rear) 150/150 (Rear)
      Longest Continuous Sound (Front) 75/75 (Front) 150/150 (Front) 150/650 (*) 150/650 (Rear)
      Not detected Continuous Sound (Front) 75/75 (Front) 150/150 (Front) 150/650 (Front) None

      *: The buzzer of the front or rear sensor, which is closest to the obstacle, sounds.

      Figure 3. Timing 1

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    5. Clearance Warning Buzzer Mute Function


      1. When a sensor detects an obstacle with shift state other than park (P) or reverse (R), the buzzer can be temporarily muted using the buzzer mute switch in the multi-display assembly.

      2. The mute function is canceled if the vehicle speed reaches a certain level.

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        *a Buzzer Mute Switch - -