Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

NOTICE:

  • The following inspection procedure of the panoramic view monitor system is described on the assumption that the navigation system*1 or audio and visual system*2 is normal. If the navigation system has any malfunction, first proceed with troubleshooting of the navigation system.
    • *1: w/ Navigation System
    • *2: w/ Audio and Visual System
  • Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the panoramic view monitor system may be needed.

    Click here

HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

General

Symptom

Suspected Area

Link

Display does not switch when the panoramic view monitor switch is pressed.

Proceed to "ECU Power Source Circuit"

Diagnostic mode - Signal connection check (CAMERA SW check)

Parking assist ECU

Display does not switch to the panoramic view and rear view screen or wide rear view screen when the shift lever is in R.

Diagnostic mode - Signal connection check (SHIFT check)

Reverse signal Circuit

Parking assist ECU

Image not displayed on the panoramic view and rear view screen or wide rear view screen when the shift lever is in R.

Proceed to "Image from Camera for Panoramic View Monitor is Abnormal"

Display does not switch to the see through view screen or moving view screen when the panoramic view monitor switch is pressed.

Diagnostic mode - Signal connection check (CAN check)

Diagnostic mode - Signal connection check (CAMERA SW check)

Parking assist ECU

Image not displayed on the see through view screen or moving view screen when the panoramic view monitor switch is pressed.

Proceed to "Image from Camera for Panoramic View Monitor is Abnormal"

Display does not switch to the panoramic view and wide front view screen or the two-side view screen when the panoramic view monitor switch is pressed.

Diagnostic mode - Signal connection check (CAN check)

Diagnostic mode - Signal connection check (CAMERA SW check)

Parking assist ECU

Image not displayed on the panoramic view and wide front view screen, panoramic view and cornering view screen or the panoramic view and side clearance view screen when the panoramic view monitor main switch is pressed.

Proceed to "Image from Camera for Panoramic View Monitor is Abnormal"

Display does not switch to the retracted screen when the outer mirrors are retracted.

Diagnostic mode - Signal connection check (CAN check)

Parking assist ECU

Display does not switch from the retracted screen when the outer mirrors are not in the retracted position.

Diagnostic mode - Signal connection check (CAN check)

Parking assist ECU

Display Malfunction

Symptom

Suspected Area

Link

Objects not displayed correctly on the panoramic view monitor screen (color, distorted image).

Proceed to "Image from Camera for Panoramic View Monitor is Abnormal"

Distorted display on panoramic view screen.

Camera view adjustment (calibration)

Parking assist ECU

Parking lines do not match at front and rear on panoramic view screen.

Camera view adjustment (calibration)

Parking assist ECU

Partial black screen on panoramic view screen.

Proceed to "Image from Camera for Panoramic View Monitor is Abnormal"

Camera view adjustment (calibration)

Parking assist ECU

Area displayed differs from the actual area.

Ensure no door is opened

-

Camera view adjustment (calibration)

Parking assist ECU

Switch Function

Symptom

Suspected Area

Link

Panoramic view monitor switch night illumination does not illuminate.

Panoramic view monitor switch

Harness or connector

-

Remote touch switch operation is not accepted.

Audio and visual system (for 12.3 Inch Display) - Remote touch self check*1

Audio and visual system (for 8 Inch Display) - Remote touch self check*2

Navigation system - Remote touch self check*3

Parking assist ECU

Radio receiver assembly

The remote touch function of the screen does not operate for the panoramic view monitor system.

Parking assist ECU

Radio receiver assembly

  • *1: w/ Audio and Visual System (for 12.3 Inch Display)
  • *2: w/ Audio and Visual System (for 8 Inch Display)
  • *3: w/ Navigation System
Panoramic View Monitor System Function

Symptom

Suspected Area

Link

When the vehicle speed increases in the automatic display mode, the panoramic view and wide front view screen or the two-side view screen remains displayed, without switching to the navigation screen.

Parking assist ECU

The screen display timer function does not operate if the manual display mode is selected.

Check the screen display timer function

-

Parking assist ECU

The estimated course lines do not match the vehicle width extension lines when the steering wheel points straight ahead.

Check the steering wheel installation angle

Adjust steering angle

Camera view adjustment (calibration)

Parking assist ECU

Estimated course lines stop moving before the steering wheel is turned fully left.

Steering angle setting (calibrate stored maximum steering angle)

"!" is displayed and estimated course lines are not displayed.

Check if the back door is not open

-

Parking assist ECU

Radio receiver assembly

Estimated course lines are not displayed.

Check the panoramic view monitor screen display mode settings (Check if the estimated course lines display is set to off)

Parking assist ECU

"!" is displayed.

Store the steering angle sensor steering neutral point

Diagnostic mode - Signal connection check (CAN check)

"!" remains displayed after the steering neutral point is stored.

Adjust steering angle

Steering sensor

Parking assist ECU

"!" is displayed and all the buttons on the screen are grayed out.

Camera view adjustment (calibration)

Adjust steering angle

Refer to Audio and Visual System (for 12.3 Inch Display)*1

Refer to Audio and Visual System (for 8 Inch Display)*2

Refer to Navigation System*3

"!" is displayed and all the buttons on the screen are grayed out even after parking assist ECU initialization has been completed.

Parking assist ECU

Refer to Audio and Visual System (for 12.3 Inch Display)*1

Refer to Audio and Visual System (for 8 Inch Display)*2

Refer to Navigation System*3

Guide lines and buttons are not displayed on the panoramic view and rear view screen display screen.

Check if the luggage compartment light turns on and off normally (If not, refer to Lighting System (Interior) - Problem Symptoms Table)

Parking assist ECU

"CHK" is displayed for an item on the Vehicle Signal Check screen.

Diagnostic mode - Signal connection check

Blind spots in image.

Ensure no door is opened

-

Camera view adjustment (calibration)

Camera boundary lines are poorly connected.

Camera view adjustment (calibration)

Estimated course lines are displaced.

Camera view adjustment (calibration)

Adjust steering angle

All buttons on the panoramic view monitor are continuously grayed out

Refer to Audio and Visual System (for 12.3 Inch Display)*1

Refer to Audio and Visual System (for 8 Inch Display)*2

Refer to Navigation System*3

  • *1: w/ Audio and Visual System (for 12.3 Inch Display)
  • *2: w/ Audio and Visual System (for 8 Inch Display)
  • *3: w/ Navigation System
    Initialization
    INITIALIZATION INITIALIZE PANORAMIC VIEW MONITOR SYSTEM (a) When "!" is displayed on the multi-display assembly, correct the steering angle neutral point using the following method. (1) Fully turn the ...

    Terminals Of Ecu
    TERMINALS OF ECU PARKING ASSIST ECU (a) Disconnect the J159 parking assist ECU connector. (b) Measure the voltage and resistance according to the value(s) in the table below. Terminal No. (Symbol) ...

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