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Home >> Lexus >> 2007 >> IS 350 >> Repair and Diagnosis >> Accessories & Equipment >> Warning Systems >> Park Assist/Monitoring >> Intuitive Parking Assist System >> System Description
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System Description

  1. GENERAL 
    1. This system uses ultrasonic sensors to detect any obstacles at the corners and the rear of the vehicle. The system then informs the driver of the distance between the sensors and the obstacles as well as their positions by indicating them on the multi-display or multi-information display and by sounding a buzzer.
  2. FUNCTION OF COMPONENTS 
    FUNCTION OF COMPONENTS

    Components Function
    Ultrasonic sensor (6) Detects the distance between the vehicle and the obstacle
    Clearance warning buzzer Sounds the buzzer to inform the driver according to the distance to the obstacle
    Multi-information Display on the Combination Meter Displays the location of the obstacle and the approximate distance between the vehicle and the obstacle
    Displays a malfunction or freezing of the ultrasonic sensor to inform the driver
    The multi-information display is switched to the multi-switch mode by the satellite switch operation. Then, LEXUS parking assist-sensor ON/OFF condition will be displayed
    LEXUS Parking Assist-Sensor Indicator Light on the Combination Meter Illuminates to inform the driver when the system operation conditions are met
    Satellite Switch Operating this switch enables disenables, or cuts off the operation of LEXUS parking assist-sensor
    Multi-display Displays the location of the obstacle and the approximate distance between the vehicle and the obstacle
    The sound volume and sounding distance of the buzzer and display requirement distance can be set on the setup screen for the LEXUS parking assist-sensor
    Clearance Warning ECU Judges the approximate distance between the vehicle and the obstacle based on the signals from the ultrasonic sensors and sends it to the multi-information display and multi-display Sounds the buzzer
    Body ECU (LH) Transmits the reverse signal to the clearance warning ECU
    Body ECU (RH) Transmits the parking brake switch signal to the clearance warning ECU
    ECM Transmits the shift position signal to the clearance warning ECU
  3. OPERATION EXPLANATION 
    1. The operating condition of each LEXUS parking assist-sensor differs according to the installation position as shown in INSTALLATION POSITION TABLE  .
      INSTALLATION POSITION TABLE

      Installation Position Operating Condition
      Front Corner Sensor Engine switch ON (IG)
      Satellite switch is ON
      Shift position is except P (A/T)
      Parking brake is not applied (M/T)
      Vehicle speed is approx. 6 km/h (10 km/h) or less
      Rear Corner Sensor Engine switch ON (IG)
      Satellite switch is ON
      Shift position is R (A/T)
      Buck-up light switch in ON (M/T)
      Vehicle speed is approx. 6 km/h (10 km/h) or less
      Rear Center Sensor Engine switch ON (IG)
      Satellite switch is ON
      Shift position is R (A/T)
      Buck-up light switch in ON (M/T)
      Vehicle speed is approx. 6 km/h (10 km/h) or less
    2. The LEXUS parking assist-sensor then informs the driver of the distance between the sensors and the obstacles as well as their positions by displaying them on the multi-information display in the combination meter or multi-display and by sounding buzzer.
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