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Home >> Lexus >> 2021 >> LS 500 Base, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Monitor System - Service Information (1 Of 2) >> ULTRASONIC SENSOR (for Rear) >> Removal [10/2020 - 10/2022] >> Caution / Notice / Hint

Caution / Notice / Hint

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed, installed or replaced during the rear ultrasonic sensor removal/installation are shown below.

NECESSARY PROCEDURE AFTER PARTS REMOVED/INSTALLED/REPLACED

Replaced Part or Performed Procedures Necessary procedures Effect/Inoperative Function When Necessary Procedures are not Performed Link
w/ Hands Free Power Trunk Lid 
  1. Disconnect cable from negative (-) battery terminal
Memorize steering angle neutral point Parking assist monitor system Refer to INITIALIZATION [12/2017 - 10/2022]
Panoramic view monitor system Refer to INITIALIZATION [12/2017 - 10/2022]
Initialize rear door sunshade system Rear door sunshade system Refer to INITIALIZATION [12/2017 - ]
Ultrasonic sensor
  • Ultrasonic sensor detection angle
  • Ultrasonic sensor detection angle registration
  • Parking support alert system
  • Parking support brake system
Refer to CALIBRATION [10/2020 - 10/2022]
w/ Hands Free Power Trunk Lid 
  1. Kick door control sensor
Reset connection history There are cases where the connection history display differs from the vehicle condition Refer to DATA LIST / ACTIVE TEST [12/2017 - 10/2023]
w/ Power Trunk Lid System 
  1. When the luggage compartment door is opened using a mechanical key
Initialize luggage closer motor assembly The power trunk lid does not operate Refer to INITIALIZATION [10/2020 - 10/2023]

HINT: 

When the cable is disconnected/reconnected to the battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.