TOYOTA PARKING ASSIST-SENSOR SYSTEM(w/o Simple Intelligent Parking Assist System) OPERATION CHECK

Info Added 2017-10-06


  1. Self-diagnosis System


    1. If the clearance warning ECU assembly detects that an ultrasonic sensor is malfunctioning, a malfunction indication is displayed on the combination meter assembly.

      Malfunctioning Item Detection Condition

      Warning Message

      (Multi-information Display)

      Malfunction Indication

      (Combination Meter Assembly)

      Buzzer Sounding

      (No. 1 Clearance Warning Buzzer and No. 2 Clearance Warning Buzzer)

      		 Suspected Area
      Frozen indication

      • The ultrasonic sensor is covered with foreign matter, such as mud or snow

      • The ultrasonic sensor is frozen

      Clean Parking Assist Sensor

      Tech Tips

      Depending on the clearance warning ECU assembly, the "Clean Parking Assist Sensor" warning message may not be displayed.

      		 ○ ○

      • If a frozen indication is displayed, proceed to "Sensor Frozen Indication (Dirty or Frozen)"

        Click here

      • Check if any foreign matter is attached to the ultrasonic sensors and their surrounding areas

        Click here

      • If there is no foreign matter attached to the ultrasonic sensors and their surrounding areas, check for DTCs

        Click here

      Open circuit indication

      • There is an open circuit between the clearance warning ECU assembly and the ultrasonic sensor

      • The ultrasonic sensor is malfunctioning

      		 Parking Assist Malfunction ○ ○

      Check for DTCs

      Click here


      1. Malfunction Indication (Combination Meter Assembly)

        B004965C01
        *a Open circuit indication *b Frozen indication

        Tech Tips

        Depending on the clearance warning ECU assembly, the "Clean Parking Assist Sensor" warning message may not be displayed.

      2. Buzzer Sounding (No. 1 Clearance Warning Buzzer)

        B0049A6E07

        Tech Tips

        Buzzer sounding is stopped after approximately 7.5 seconds elapsed.

  2. DETECTION RANGE MEASUREMENT AND DISPLAY INSPECTION

    Note

    While performing the following measurement and inspection, make sure to depress the brake pedal to prevent the vehicle from moving. (The parking brake should be released.)*1

    The following measurement and inspection will be performed with the shift lever in a position other than P. Be sure to apply the parking brake and depress the brake pedal firmly to prevent the vehicle from moving.*2


    1. Turn the ignition switch to ON.

    2. Turn the TOYOTA parking assist-sensor system on.

    3. Detection range measurement:


      1. Move the shift state according to the table below.

        Measurement Area Shift State
        Front Corner/Center

        • Shift lever is in R or other than R.*1

        • Other than P*2
        Rear Corner/Center Shift lever is in R

        • *1: for Manual Transaxle

        • *2: for CVT

      2. Figure 1. Corner Sonar Detection Range

        B0049BBC01
        *a Approx. 500 mm (19.7 in.) *b Approx. 500 mm (19.7 in.)
        *c Approx. 650 mm (25.6 in.) *d Approx. 100 mm (3.9 in.)
        *e A *f B

        Note

        The ultrasonic sensor side view detection range (hatched area labeled (B)) represents the cross section of the top view detection range (A). The hatched area (A) does not represent the entire side view detection range.

        Figure 2. Front Center Sonar Detection Range

        B0049C0C01
        *a Approx. 1760 mm (69.3 in.) *b Approx. 1000 mm (39.4 in.)
        *c Approx. 100 mm (3.9 in.) *d Approx. 650 mm (25.6 in.)

        Figure 3. Rear Center Sonar Detection Range

        B0049CHC01
        *a Approx. 1650 mm (65.0 in.) *b Approx. 1000 mm (59.1 in.)
        *c Approx. 2000 mm (78.7 in.) *d Approx. 650 mm (25.6 in.)
        *e Approx. 100 mm (3.9 in.) *f Wall

    4. Front corner sonar display and buzzer operation check


      1. When the front corner ultrasonic sensor (LH/RH) have detected an obstacle, check the displays and check that the No. 1 clearance warning buzzer sounds.

        Operation Condition
        Ignition Switch TOYOTA Parking Assist-sensor System Shift Lever Position Vehicle Speed Parking Brake
        ON On

        When the shift lever is not in R*1

        When the shift lever is not in P or R*2

        		 Less than 10 km/h (6 mph) Released*1
        ON On R - -

        • *1: for Manual Transaxle

        • *2: for CVT

        B0049DTC01
        *a Multi-information Display *b Example (Front Corner Sonar)
        *c Close-range Detection *d Medium-range Detection
        *e Long-range Detection - -
        B0049DUE45

        Tech Tips

        Ultrasonic waves are used to measure the detection range; however, the detection range may vary depending on the ambient temperature.

      2. Front center sonar display and buzzer operation check


        1. When the front center ultrasonic sensor (LH/RH) have detected an obstacle, check the display and check that the No. 1 clearance warning buzzer sounds.

        3. Operation Condition
        Ignition Switch TOYOTA Parking Assist-sensor System Shift Lever Position Vehicle Speed Parking Brake
        ON On

        When the shift lever is not in R*1

        When the shift lever is not in P or R*2

        		 Less than 10 km/h (6 mph) Released*1
        ON On R - -

        • *1: for Manual Transaxle

        • *2: for CVT

        B00498EC01
        *a Multi-information Display *b Example (Front Center Sonar)
        *c Close-range Detection *d Medium-range Detection
        *e Long-range Detection *f Longest-range Detection
        B0049DCE29

        Tech Tips

        Ultrasonic waves are used to measure the detection range; however, the detection range may vary depending on the ambient temperature.

      3. Rear corner sonar display and buzzer operation check


        1. When the rear corner ultrasonic sensor (LH/RH) have detected an obstacle, check the display and check that the No. 2 clearance warning buzzer sounds.

        4. Operation Condition
        Ignition Switch TOYOTA Parking Assist-sensor System Shift Lever Position Vehicle Speed Parking Brake
        ON On R - -
      B00499RC01
      *a Multi-information Display *b Example (Rear Corner Sonar)
      *c Close-range Detection *d Medium-range Detection
      *e Long-range Detection - -
      B0049DUE46

      Tech Tips

      Ultrasonic waves are used to measure the detection range; however, the detection range may vary depending on the ambient temperature.

    5. Rear center sonar display and buzzer operation check


      1. When the rear center ultrasonic sensor (LH/RH) have detected an obstacle, check the display and check that the No. 2 clearance warning buzzer sounds.

      6. Operation Condition
      Ignition Switch TOYOTA Parking Assist-sensor System Shift Lever Position Vehicle Speed Parking Brake
      ON On R - -
    B0049AAC01
    *a Multi-information Display *b Example (Rear Center Sonar)
    *c Close-range Detection *d Medium-range Detection
    *e Long-range Detection *f Longest-range Detection
    B0049DCE30

    Tech Tips

    Ultrasonic waves are used to measure the detection range; however, the detection range may vary depending on the ambient temperature.