Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001H93C
Model Year Start: 2020 Model: Corolla Prod Date Range: [01/2019 - 04/2020]
Title: PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM (for HV Model (w/o Safe Exit Assist Function)): PROBLEM SYMPTOMS TABLE; 2020 MY Corolla Corolla HV [01/2019 - 04/2020]

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"

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM (for HV Model (w/o Safe Exit Assist Function)): Power Source Circuit

CAN communication system

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

Blind spot monitor sensor LH

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: REMOVAL

Steering pad switch assembly

2020 MY Corolla Corolla Hatchback Corolla HV [01/2019 - 03/2019]; STEERING COLUMN: STEERING PAD SWITCH (except G16E-GTS): INSPECTION 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV [03/2019 - 09/2022]; STEERING COLUMN: STEERING PAD SWITCH (except G16E-GTS): INSPECTION

Spiral cable sub-assembly

2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: SPIRAL CABLE: INSPECTION

Meter / gauge system

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

System cannot be turned off

CAN communication system

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

Blind spot monitor sensor LH

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: REMOVAL

Steering pad switch assembly

2020 MY Corolla Corolla Hatchback Corolla HV [01/2019 - 03/2019]; STEERING COLUMN: STEERING PAD SWITCH (except G16E-GTS): INSPECTION 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV [03/2019 - 09/2022]; STEERING COLUMN: STEERING PAD SWITCH (except G16E-GTS): INSPECTION

Spiral cable sub-assembly

2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: SPIRAL CABLE: INSPECTION

Meter / gauge system

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

"Blind Spot Monitor Unavailable" or "Blind Spot Monitor System Malfunction Visit Your Dealer" is displayed on the multi-information display

Check abnormality history

2020 MY Corolla Corolla HV [01/2019 - 04/2020]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM (for HV Model (w/o Safe Exit Assist Function)): DIAGNOSIS SYSTEM

Blind spot monitor sensor RH

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: REMOVAL

Blind spot monitor sensor LH

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: REMOVAL

Combination meter assembly

2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; METER / GAUGE / DISPLAY: COMBINATION METER: REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; METER / GAUGE / DISPLAY: COMBINATION METER: REMOVAL

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"

2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: ADJUSTMENT 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: ADJUSTMENT

Outer mirror RH

2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; MIRROR (EXT): OUTER REAR VIEW MIRROR GLASS: REMOVAL

Outer rear view mirror assembly RH

2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; MIRROR (EXT): OUTER REAR VIEW MIRROR: REMOVAL

Blind spot monitor sensor RH

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: REMOVAL

Outer rear view mirror indicator LH does not illuminate

Proceed to "Blind Spot Monitor Beam Axis Confirmation"

2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: ADJUSTMENT 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: ADJUSTMENT

Outer mirror LH

2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; MIRROR (EXT): OUTER REAR VIEW MIRROR GLASS: REMOVAL

Outer rear view mirror assembly LH

2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; MIRROR (EXT): OUTER REAR VIEW MIRROR: REMOVAL

Blind spot monitor sensor LH

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: REMOVAL

Outer rear view mirror indicator RH remains illuminated

Proceed to "Blind Spot Monitor Beam Axis Confirmation"

2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: ADJUSTMENT 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: ADJUSTMENT

Blind spot monitor sensor RH

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: REMOVAL

Outer rear view mirror indicator LH remains illuminated

Proceed to "Blind Spot Monitor Beam Axis Confirmation"

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: REMOVAL

Blind spot monitor sensor LH

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: REMOVAL

Outer rear view mirror indicator RH does not flash

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

2020 - 2021 MY Corolla Corolla HV [01/2019 - 06/2021]; LIGHTING (EXT): LIGHTING SYSTEM (for HV Model): PROBLEM SYMPTOMS TABLE

Blind spot monitor sensor RH

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: REMOVAL

Outer rear view mirror indicator LH does not flash

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

2020 - 2021 MY Corolla Corolla HV [01/2019 - 06/2021]; LIGHTING (EXT): LIGHTING SYSTEM (for HV Model): PROBLEM SYMPTOMS TABLE

Blind spot monitor sensor LH

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: REMOVAL

Outer rear view mirror indicator RH continues to flash

Blind spot monitor sensor RH

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: REMOVAL

Outer rear view mirror indicator LH continues to flash

Blind spot monitor sensor LH

2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: REMOVAL