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Home >> Lexus >> 2018 >> LS 500 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Blind Spot Monitor System - Diagnostics - Introduction >> Blind Spot Monitor System >> Problem Symptoms Table [12/2017 - 10/2023] >> Problem Symptoms Table [12/2017 - 10/2023]

Problem Symptoms Table [12/2017 - 10/2023]

NOTE:
  • The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System.

    Refer to PRECAUTION [12/2017 - 10/2020] , or refer to PRECAUTION [10/2020 - 11/2021] , or refer to PRECAUTION [11/2021 - 10/2023]

  • When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
  • After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

    Refer to PRECAUTION [12/2017 - 10/2020] , or refer to PRECAUTION [10/2020 - 10/2023]

HINT: 

ENTIRE SYSTEM

Symptom Suspected Area Link
System does not operate at all CAN communication system Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 09/2018]
Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 10/2020]
Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2020 - 10/2023]
Meter / gauge system Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 10/2023]
Proceed to "Power Source Circuit" Refer to Power Source Circuit [12/2017 - 10/2023]
Steering pad switch assembly Refer to INSPECTION [12/2017 - 10/2023]
Spiral with sensor cable sub-assembly Refer to INSPECTION [12/2017 - ]
Blind spot monitor sensor RH Refer to REMOVAL [12/2017 - 09/2018] , or refer to REMOVAL [09/2018 - 10/2020] , or refer to REMOVAL [10/2020 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023]
System cannot be turned off CAN communication system Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 09/2018] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 10/2020] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2020 - 10/2023]
Meter / gauge system Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 10/2023]
Steering pad switch assembly Refer to INSPECTION [12/2017 - 10/2023]
Spiral with sensor cable sub-assembly Refer to INSPECTION [12/2017 - ]
Blind spot monitor sensor RH Refer to REMOVAL [12/2017 - 09/2018] , or refer to REMOVAL [09/2018 - 10/2020] , or refer to REMOVAL [10/2020 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023]
"BSM Not Available" or "BSM Malfunction Visit Your Dealer" is displayed on the multi-information display Check abnormality history Refer to DIAGNOSIS SYSTEM [12/2017 - 10/2023] 
Blind spot monitor sensor LH Refer to REMOVAL [12/2017 - 09/2018] , or refer to REMOVAL [09/2018 - 10/2020] , or refer to REMOVAL [10/2020 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023]
Blind spot monitor sensor RH Refer to REMOVAL [12/2017 - 09/2018] , or refer to REMOVAL [09/2018 - 10/2020] , or refer to REMOVAL [10/2020 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023]
Combination meter assembly Refer to REMOVAL [12/2017 - 10/2020] , or refer to REMOVAL [10/2020 - 10/2023]
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 ADJUSTMENT [12/2017 - 10/2020] , or refer to ADJUSTMENT [10/2020 - 10/2023]
Outer mirror RH (outer rear view mirror indicator RH) Refer to INSPECTION [12/2017 - ]
Front multiplex network door ECU RH Refer to DISASSEMBLY [12/2017 - 09/2018] , or refer to DISASSEMBLY [09/2018 - 10/2020] , or refer to DISASSEMBLY [10/2020 - 10/2022] , or refer to DISASSEMBLY [10/2022 - 10/2023]
Outer mirror actuator assembly RH Refer to REMOVAL [12/2017 - ]
Blind spot monitor sensor RH Refer to REMOVAL [12/2017 - 09/2018] , or refer to REMOVAL [09/2018 - 10/2020] , or refer to REMOVAL [10/2020 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023]
Outer rear view mirror indicator LH does not illuminate Proceed to "Blind Spot Monitor Beam Axis Confirmation" Refer to ADJUSTMENT [12/2017 - 10/2020] , or refer to ADJUSTMENT [10/2020 - 10/2023]
Outer mirror LH (outer rear view mirror indicator LH) Refer to INSPECTION [12/2017 - ]
Front multiplex network door ECU LH Refer to DISASSEMBLY [12/2017 - 09/2018] , or refer to DISASSEMBLY [09/2018 - 10/2020] , or refer to DISASSEMBLY [10/2020 - 10/2022] , or refer to DISASSEMBLY [10/2022 - 10/2023]
Outer mirror actuator assembly LH Refer to REMOVAL [12/2017 - ]
Blind spot monitor sensor LH Refer to REMOVAL [12/2017 - 09/2018] , or refer to REMOVAL [09/2018 - 10/2020] , or refer to REMOVAL [10/2020 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023]
Outer rear view mirror indicator RH remains illuminated Proceed to "Blind Spot Monitor Beam Axis Confirmation" Refer to ADJUSTMENT [12/2017 - 10/2020] , or refer to ADJUSTMENT [10/2020 - 10/2023]
Blind spot monitor sensor RH Refer to REMOVAL [12/2017 - 09/2018] , or refer to REMOVAL [09/2018 - 10/2020] , or refer to REMOVAL [10/2020 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023]
Outer rear view mirror indicator LH remains illuminated Proceed to "Blind Spot Monitor Beam Axis Confirmation" Refer to ADJUSTMENT [12/2017 - 10/2020] , or refer to ADJUSTMENT [10/2020 - 10/2023]
Blind spot monitor sensor LH Refer to REMOVAL [12/2017 - 09/2018] , or refer to REMOVAL [09/2018 - 10/2020] , or refer to REMOVAL [10/2020 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023]
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 [12/2017 - 09/2018] , or refer to PROBLEM SYMPTOMS TABLE [09/2018 - 10/2020] , or refer to PROBLEM SYMPTOMS TABLE [10/2020 - 10/2023]
Blind spot monitor sensor RH Refer to REMOVAL [12/2017 - 09/2018] , or refer to REMOVAL [09/2018 - 10/2020] , or refer to REMOVAL [10/2020 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023]
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 [12/2017 - 09/2018] , or refer to PROBLEM SYMPTOMS TABLE [09/2018 - 10/2020] , or refer to PROBLEM SYMPTOMS TABLE [10/2020 - 10/2023]
Blind spot monitor sensor LH Refer to REMOVAL [12/2017 - 09/2018] , or refer to REMOVAL [09/2018 - 10/2020] , or refer to REMOVAL [10/2020 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023]
Outer rear view mirror indicator RH continues to flash Blind spot monitor sensor RH Refer to REMOVAL [12/2017 - 09/2018] , or refer to REMOVAL [09/2018 - 10/2020] , or refer to REMOVAL [10/2020 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023]
Outer rear view mirror indicator LH continues to flash Blind spot monitor sensor LH Refer to REMOVAL [12/2017 - 09/2018] , or refer to REMOVAL [09/2018 - 10/2020] , or refer to REMOVAL [10/2020 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023]