LEXUS PARKING ASSIST-SENSOR SYSTEM OPERATION CHECK


  1. MALFUNCTION DISPLAY (MULTI-INFORMATION DISPLAY)


    1. Open circuit indication


      1. If there is an open circuit between a No. 1 ultrasonic sensor and the clearance warning ECU assembly or a sensor is malfunctioning, the malfunction is displayed as shown in the illustration.

        B001LI2C01
        *A for Monochrome Type *B for Color Type
        *a Clearance Warning Buzzer *b Open circuit indication

        Tech Tips

        If a sensor has an open circuit, check for DTCs and troubleshoot according to each inspection procedure.

        Click here

    2. Frozen indication


      1. If a sensor is covered with foreign matter, such as mud or snow, the affected sensor is displayed as shown in the illustration.

        B001LI5C01
        *A for Monochrome Type *B for Color Type
        *a Clearance Warning Buzzer *b Frozen indication

        Tech Tips


        • If a frozen indication is displayed, read Precaution for LEXUS Parking Assist-sensor System first and confirm that the sensor is not covered with foreign matter.

          Click here

        • Check for DTCs and troubleshoot according to each inspection procedure after confirming that the sensor is not covered with foreign matter.

          Click here

  2. MALFUNCTION DISPLAY (MULTI-DISPLAY)


    1. Open circuit indication


      1. If there is an open circuit between the No. 1 ultrasonic sensor and the clearance warning ECU assembly or a sensor is malfunctioning, the malfunction is displayed as shown in the illustration.

        B001LSUC03
        *A for 7 Inch Display *B for 10.3 Inch Display
        *a When the shift lever is not in P or R *b When the shift lever is in R

        Tech Tips

        If a sensor has an open circuit, check for DTCs and troubleshoot according to each inspection procedure.

        Click here

    2. Frozen indication


      1. If a sensor is covered with foreign matter, such as mud or snow, the affected sensor is displayed as shown in the illustration.

        B001MC2C03
        *A for 7 Inch Display *B for 10.3 Inch Display
        *a When the shift lever is not in P or R *b When the shift lever is in R

        Tech Tips


        • If a frozen indication is displayed, read Precaution for LEXUS Parking Assist-sensor System first and confirm that the sensor is not covered with foreign matter.

          Click here

        • Check for DTCs and troubleshoot according to each inspection procedure after confirming that the sensor is not covered with foreign matter.

          Click here

  3. DETECTION RANGE MEASUREMENT AND DISPLAY INSPECTION

    Note

    The following measurement and inspection will be performed with the shift state other than park (P). Be sure to apply the parking lever and depress the brake pedal firmly to prevent the vehicle from moving.


    1. Detection range measurement:


      1. Turn the power switch on (IG).

      2. Select reverse (R) to check the ultrasonic sensors.

    2. Turn the clearance sonar main switch on.

    3. Move a 60 mm (2.36 in.) diameter pole near each sensor to measure its detection range.

      Note

      These detection ranges are applicable when positioning the 60 mm (2.36 in.) diameter pole parallel or perpendicular to the ground. The detection range varies depending on the measuring method and type of obstacle (such as walls).

      Tech Tips

      Have an assistant move the pole.


      1. Clearance Sonar

        B001M2RE01
        *1 Approx. 850 mm (33.5 in.)
        *2 Approx. 500 mm (19.7 in.)
        *3 Approx. 450 mm (17.7 in.)
        *4 Approx. 200 mm (7.87 in.)

        Note

        The No. 1 ultrasonic sensor side view detection range (hatched area labeled (B)) represents the cross section of the top view detection range (A). The hatched area (B) does not represent the entire side view detection range.

      2. Back Sonar

        B001KCCE01

    4. Front corner sonar display and buzzer operation check


      1. When the No. 1 ultrasonic sensors (front corner sonar) have detected an obstacle, check the displays and check that the buzzer sounds.

        Operation Condition
        Power Switch Clearance Sonar Main Switch Shift State Vehicle Speed
        On (IG) On Other than park (P) or reverse (R) Less than approximately 10 km/h (6.2 mph)
        On (IG) On Reverse (R) -
        B001KKVC01
        *A for Monochrome Type *B for Color Type
        *C for 7 Inch Display *D for 10.3 Inch Display
        *a Multi-information Display *b Multi-display
        *c Example (Front Corner Sonar) *d Close-range Detection
        *e Medium-range Detection *f Long-range Detection
        *g When the shift lever is not in P or R *h When the shift lever is in R
        B001KMPE38

        Tech Tips

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

      2. Rear corner sonar display and buzzer operation check


        1. When the No. 1 ultrasonic sensors (rear corner sonar) have detected an obstacle, check the display and check that the buzzer sounds.

        3. Operation Condition
        Power Switch Clearance Sonar Main Switch Shift State Vehicle Speed
        On (IG) On Reverse (R) -
        B001KXOC01
        *A for Monochrome Type *B for Color Type
        *C for 7 Inch Display *D for 10.3 Inch Display
        *a Multi-information Display *b Multi-display
        *c Example (Rear Corner Sonar) *d Close-range Detection
        *e Medium-range Detection *f Long-range Detection
        B001KMPE13

        Tech Tips

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

      3. Rear center sonar display and buzzer operation check


        1. When the No. 1 ultrasonic sensors (rear center sonar) have detected an obstacle, check the display and check that the buzzer sounds.

        4. Operation Condition
        Power Switch Clearance Sonar Main Switch Shift State Vehicle Speed
        On (IG) On Reverse (R) -
      B001L92C01
      *A for Monochrome Type *B for Color Type
      *C for 7 Inch Display *D for 10.3 Inch Display
      *a Multi-information Display *b Multi-display
      *c Example (Rear Center Sonar) *d Close-range Detection
      *e Medium-range Detection *f Long-range Detection
      *g Longest-range Detection - -
      B001L58E10

      Tech Tips

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