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

PROBLEM SYMPTOMS TABLE

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.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Entire System

Symptom

Suspected Area

Link

System does not operate at all

Proceed to "Power Source Circuit"

CAN communication system

Blind spot monitor sensor LH

System cannot be turned off

CAN communication system

Blind spot monitor sensor LH

"BSM not available" or "Check BSM System" is displayed on the multi-information display

Check abnormality history

Blind spot monitor sensor RH

Blind spot monitor sensor LH

Combination meter assembly

Blind Spot Monitor Function

Symptom

Suspected Area

Link

Outer rear view mirror indicator RH does not illuminate

Proceed to "Blind Spot Monitor Beam Axis Confirmation"

Outer mirror RH

Outer mirror control ECU assembly RH

Outer mirror actuator assembly RH

Blind spot monitor sensor RH

Outer rear view mirror indicator LH does not illuminate

Proceed to "Blind Spot Monitor Beam Axis Confirmation"

Outer mirror LH

Outer mirror control ECU assembly LH

Outer mirror actuator assembly LH

Blind spot monitor sensor LH

Outer rear view mirror indicator RH remains illuminated

Proceed to "Blind Spot Monitor Beam Axis Confirmation"

Blind spot monitor sensor RH

Outer rear view mirror indicator LH remains illuminated

Proceed to "Blind Spot Monitor Beam Axis Confirmation"

Blind spot monitor sensor LH

Outer rear view mirror indicator RH does not flash

Proceed to "Turn Signal Light" in Problem Symptoms Table for the Lighting (EXT) section*1

Proceed to "Turn Signal Light" in Problem Symptoms Table for the Lighting (EXT) section*2

Blind spot monitor sensor RH

Outer rear view mirror indicator LH does not flash

Proceed to "Turn Signal Light" in Problem Symptoms Table for the Lighting (EXT) section*1

Proceed to "Turn Signal Light" in Problem Symptoms Table for the Lighting (EXT) section*2

Blind spot monitor sensor LH

Outer rear view mirror indicator RH continues to flash

Blind spot monitor sensor RH

Outer rear view mirror indicator LH continues to flash

Blind spot monitor sensor LH

RCTA Function

Symptom

Suspected Area

Link

Function does not operate at all

(Blind spot monitor function operates normally)

Data List / Active Test (Reverse)

Automatic transmission system (U881E)

Automatic transmission system (U881F)

Blind spot monitor sensor RH

When shift lever is in R, detection operation is normal but RCTA indicator does not appear on multi-display assembly

CAN communication system

Parking assist ECU*3

Radio receiver assembly

Blind spot monitor sensor LH

Blind spot monitor sensor RH

Multi-display assembly

  • *1: w/ Automatic Headlight Beam Level Control System
  • *2: w/o Automatic Headlight Beam Level Control System
  • *3: w/ Panoramic View Monitor System
    Operation Check
    OPERATION CHECK HINT: The blind spot monitor beam axis confirmation is performed to confirm whether the sensor's beam axis is correct, and perform adjustment of the beam axis by using reflector. BLIND ...

    Terminals Of Ecu
    TERMINALS OF ECU BLIND SPOT MONITOR SENSOR LH (MASTER) Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition X2-4 (OMIL) - X2-10 (BLGD) G - W-B Oute ...

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    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

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