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Home >> Lexus >> 2019 >> RC F >> Repair and Diagnosis >> Accessories & Equipment >> Collision/Avoidance >> Blind Spot Monitor System - Diagnostics - Introduction >> Blind Spot Monitor System >> Problem Symptoms Table [03/2019 - ] >> Problem Symptoms Table [03/2019 - ]
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Problem Symptoms Table [03/2019 - ]

HINT: 

ENTIRE SYSTEM

Symptom Suspected Area Link
System does not operate at all Proceed to "Power Source Circuit" Refer to Power Source Circuit [09/2014 - ]
Proceed to "Main Switch Circuit" Refer to Main Switch Circuit [09/2014 - 01/2023] , or refer to Main Switch Circuit [01/2023 - ]
Blind spot monitor sensor LH Refer to REMOVAL [03/2019 - ]
System cannot be turned off Proceed to "Main Switch Circuit" Refer to Main Switch Circuit [09/2014 - 01/2023] , or refer to Main Switch Circuit [01/2023 - ]
Blind spot monitor sensor LH Refer to REMOVAL [03/2019 - ]
"Blind Spot Monitor Unavailable" or "Blind Spot Monitor Malfunction Visit Your Dealer" is displayed on the multi-information display Check abnormality history Refer to DIAGNOSIS SYSTEM [11/2017 - ] 
Blind spot monitor sensor RH Refer to REMOVAL [03/2019 - ]
Blind spot monitor sensor LH Refer to REMOVAL [03/2019 - ]
Combination meter assembly Refer to REMOVAL [09/2014 - ]
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" Refer to OPERATION CHECK [03/2019 - ] 
Outer mirror RH Refer to REMOVAL [03/2019 - 11/2021] , or refer to REMOVAL [11/2021 - 01/2023] , or refer to REMOVAL [01/2023 - ]
Outer mirror control ECU assembly RH Refer to REMOVAL [09/2014 - ]
Outer rear view mirror assembly RH Refer to REMOVAL [03/2019 - ]
Blind spot monitor sensor RH Refer to REMOVAL [03/2019 - ]
Outer rear view mirror indicator LH does not illuminate Proceed to "Blind Spot Monitor Beam Axis Confirmation" Refer to OPERATION CHECK [03/2019 - ] 
Outer mirror LH Refer to REMOVAL [03/2019 - 11/2021] , or refer to REMOVAL [11/2021 - 01/2023] , or refer to REMOVAL [01/2023 - ]
Outer mirror control ECU assembly LH Refer to REMOVAL [09/2014 - ]
Outer rear view mirror assembly LH Refer to REMOVAL [03/2019 - ]
Blind spot monitor sensor LH Refer to REMOVAL [03/2019 - ]
Outer rear view mirror indicator RH remains illuminated Proceed to "Blind Spot Monitor Beam Axis Confirmation" Refer to OPERATION CHECK [03/2019 - ] 
Blind spot monitor sensor RH Refer to REMOVAL [03/2019 - ]
Outer rear view mirror indicator LH remains illuminated Proceed to "Blind Spot Monitor Beam Axis Confirmation" Refer to OPERATION CHECK [03/2019 - ] 
Blind spot monitor sensor LH Refer to REMOVAL [03/2019 - ]
Outer rear view mirror indicator RH does not flash Proceed to "Turn Signal Light" in Problem Symptoms Table for the Lighting (EXT) service information Refer to PROBLEM SYMPTOMS TABLE [03/2019 - 01/2023] , or refer to PROBLEM SYMPTOMS TABLE [01/2023 - ]
Blind spot monitor sensor RH Refer to REMOVAL [03/2019 - ]
Outer rear view mirror indicator LH does not flash Proceed to "Turn Signal Light" in Problem Symptoms Table for the Lighting (EXT) service information Refer to PROBLEM SYMPTOMS TABLE [03/2019 - 01/2023] , or refer to PROBLEM SYMPTOMS TABLE [01/2023 - ]
Blind spot monitor sensor LH Refer to REMOVAL [03/2019 - ]
Outer rear view mirror indicator RH continues to flash Blind spot monitor sensor RH Refer to REMOVAL [03/2019 - ]
Outer rear view mirror indicator LH continues to flash Blind spot monitor sensor LH Refer to REMOVAL [03/2019 - ]
RCTA FUNCTION

Symptom Suspected Area Link
Function does not operate at all
(Blind spot monitor function operates normally)
Data List / Active Test (Reverse) Refer to DATA LIST / ACTIVE TEST [09/2014 - ] 
Automatic transmission system (AA80E) Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - ]
Blind spot monitor sensor RH Refer to REMOVAL [03/2019 - ]
While RCTA function is active, outer rear view mirror indicator flashes but RCTA buzzer does not sound. Proceed to "Buzzer does not Sound" Refer to Buzzer does not Sound [03/2019 - ]
When shift lever is in R, detection operation is normal but RCTA indicator does not appear on multi-display assembly CAN communication system Refer to HOW TO PROCEED WITH TROUBLESHOOTING [03/2019 - 01/2023] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [01/2023 - ]
Rear television camera assembly Refer to REMOVAL [09/2014 - ]
Blind spot monitor sensor LH Refer to REMOVAL [03/2019 - ]
Blind spot monitor sensor RH Refer to REMOVAL [03/2019 - ]
Multi-display assembly Refer to REMOVAL [11/2017 - 01/2023] , or refer to REMOVAL [01/2023 - ]