TOYOTA PARKING ASSIST-SENSOR SYSTEM


  1. 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 600 +/- 60 to 450 +/- 50 (23.6 +/- 2.4 to 17.7 +/- 2.0) 200 200
      Middle 450 +/- 50 to 350 +/- 40 (17.7 +/- 2.0 to 13.8 +/- 1.6) 100 100
      Short 350 +/- 40 or less (13.8 +/- 1.6 or less) Continuous Sound 0
      Rear Corner Long 600 +/- 60 to 450 +/- 50 (23.6 +/- 2.4 to 17.7 +/- 2.0) 200 200
      Middle 450 +/- 50 to 350 +/- 40 (17.7 +/- 2.0 to 13.8 +/- 1.6) 100 100
      Short 350 +/- 40 or less (13.8 +/- 1.6 or less) Continuous Sound 0

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

      B0022W5E06

    3. The ultrasonic sensors are divided into 2 groups: a front section group (front corners) and a rear section group (rear corners). If multiple ultrasonic sensors detect obstructions at the same time, the No. 1 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 Short (*B) Middle (*B) Long (*B) Not detected
      Short (*A) Timing 1 Timing 2 Timing 2 Continuous Sound
      Middle (*A) Timing 2 100/100 100/100 100/100
      Long (*A) Timing 2 100/100 200/200 200/200
      Not detected Continuous Sound 100/100 200/200 None

      *A: Front section

      *B: Rear section

      B0022YBE01

    4. Clearance Warning Buzzer Mute Function


      1. When an obstruction is detected and the buzzer is sounding, the buzzer can be muted by operating the multi-information display with the steering pad switch assembly.

      2. The temporary mute function is cancelled when any of the following conditions are met:


        • The shift position is changed.

        • The vehicle speed is over certain value.

        • An abnormal sensor (open circuit or frozen sensor) is detected or a sensor cannot be utilized (CAN communication malfunction).

        • The clearance sonar system is turned off.

        • IG OFF