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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Restraints >> Seat Belts >> Pre-Collision System - Diagnostics - Introduction >> Pre-Collision System >> Problem Symptoms Table [09/2020 - 10/2022] >> Problem Symptoms Table [09/2020 - 10/2022]

Problem Symptoms Table [09/2020 - 10/2022]

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PRE-COLLISION SYSTEM

Symptom Suspected Area Link
"Pre-Collision System Malfunction Visit Your Dealer" is displayed DTC (Pre-collision System) Refer to DTC CHECK / CLEAR [12/2019 - ] 
Vehicle Control History (Pre-collision System) Refer to VEHICLE CONTROL HISTORY [09/2020 - 10/2022]
"Pre-Collision System Radar In Self Calibration Unavailable See Owner's Manual" is displayed Vehicle Control History (Front Radar Sensor System)
  • X2025 (Axis deviation of Radar Temporary unavailable (Horizontal))
Refer to VEHICLE CONTROL HISTORY [09/2020 - ]
"Pre-Collision System Radar Sensor Blocked Unavailable Clean Radar Sensor" is displayed Vehicle Control History (Front Radar Sensor System)
  • X2026 (Dirt of Radar Sensor)
Refer to VEHICLE CONTROL HISTORY [09/2020 - ]
"Pre-Collision System Out of Temperature Range Unavailable See Owner's Manual" is displayed Vehicle Control History (Front Radar Sensor System)
  • X2027 (Temperature Abnormality of Radar Sensor)
Refer to VEHICLE CONTROL HISTORY [09/2020 - ]
"Pre-Collision System Unavailable See Owner's Manual" is displayed Vehicle Control History (Front Radar Sensor System)
  • X2028 (Low Voltage of Radar Sensor)
Refer to VEHICLE CONTROL HISTORY [09/2020 - ]
"VSC Turned OFF Pre-Collision Brake System Unavailable" is displayed VSC turned off -
Electronically controlled brake system (for HV Model) Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 11/2023]
Electronically controlled brake system (for Gasoline Model) Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 11/2023]
Pre-collision system cannot be disabled (PCS warning light does not illuminate) Combination meter assembly (Perform Active Test to confirm illumination of indicator) Refer to DATA LIST / ACTIVE TEST [12/2019 - 10/2022]
Meter / gauge system Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ]
Steering pad switch assembly Refer to REMOVAL [12/2019 - 10/2022]
Combination meter assembly Refer to REMOVAL [12/2019 - ]