LEXUS 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 500 +/- 50 to 400 +/- 50 (19.7 +/- 2.0 to 15.7 +/- 2.0) 150 150
      Middle 400 +/- 50 to 300 +/- 50 (15.7 +/- 2.0 to 11.8 +/- 2.0) 75 75
      Short 300 +/- 50 or less (11.8 +/- 2.0 or less) Continuous Sound 0
      Rear Corner Long 600 +/- 50 to 450 +/- 50 (23.6 +/- 2.0 to 17.7 +/- 2.0) 150 150
      Middle 450 +/- 50 to 300 +/- 50 (17.7 +/- 2.0 to 11.8 +/- 2.0) 75 75
      Short 300 +/- 50 or less (11.8 +/- 2.0 or less) Continuous Sound 0
      Rear Center Longest 1500 +/- 150 to 600 +/- 100 (59.1 +/- 5.9 to 23.6 +/- 3.9) 150 650
      Long 600 +/- 100 to 450 +/- 50 (23.6 +/- 3.9 to 17.7 +/- 2.0) 150 150
      Middle 450 +/- 50 to 350 +/- 50 (17.7 +/- 2.0 to 13.8 +/- 2.0) 75 75
      Short 350 +/- 50 or less (13.8 +/- 2.0 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:

      B004GX9E06

    3. The ultrasonic sensors are divided into 2 groups: a front section group (front corners) and a rear section group (rear corners and rear center). 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) Longest (*B) Not detected
      Short (*A) Timing 1 Timing 2 Timing 2 Timing 2 Continuous Sound
      Middle (*A) Timing 2 75/75 75/75 75/75 75/75
      Long (*A) Timing 2 75/75 150/150 150/150 150/150
      Not detected Continuous Sound 75/75 150/150 150/650 None

      *A: Front section

      *B: Rear section

      B004HCFE01

    4. Clearance Warning Buzzer Mute Function


      1. When a sensor detects an obstacle with the shift lever in a position other than P or 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.

        B004H5LC01
        *a Buzzer Mute Switch - -