Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2020PRIUS PRIME LIMITEDREPAIR AND DIAGNOSISRESTRAINTSRESTRAINTS CONTROL SYSTEMSPRE-COLLISION SYSTEM - DIAGNOSTICS - INTRODUCTION
2020 Toyota Prius Prime Limited
Pre-Collision System - Diagnostics - Introduction
2020 Toyota Prius Prime LimitedSECTION Pre-Collision System - Diagnostics - Introduction
- Pre-Collision System
- Precaution [09/2016 - 07/2020]
- Precaution [07/2020 - ]
- Parts Location [09/2016 - 05/2019]
- Parts Location [05/2019 - 07/2020]
- Parts Location [07/2020 - ]
- System Diagram [09/2016 - 05/2019]
- System Diagram [05/2019 - 07/2020]
- System Diagram [07/2020 - ]
- System Description [09/2016 - 01/2018]
- System Description [01/2018 - 05/2019]
- System Description [05/2019 - 07/2020]
- How To Proceed With Troubleshooting [09/2016 - 01/2018]
- How To Proceed With Troubleshooting [01/2018 - 05/2019]
- How To Proceed With Troubleshooting [05/2019 - 07/2020]
- How To Proceed With Troubleshooting [07/2020 - ]
- Operation Check [09/2016 - 07/2020]
- Customize Parameters [09/2016 - 07/2020]
- Customize Parameters [07/2020 - ]
- Initialization [09/2016 - 07/2020]
- Initialization [07/2020 - ]
- Utility [09/2016 - 07/2020]
- Utility [07/2020 - ]
- Problem Symptoms Table [09/2016 - 05/2019]
- Problem Symptoms Table [05/2019 - 07/2020]
- Problem Symptoms Table [07/2020 - ]
- Terminals Of Ecu [09/2016 - 05/2019]
- Terminals Of Ecu [05/2019 - 07/2020]
- Terminals Of Ecu [07/2020 - ]
- Diagnosis System [09/2016 - 01/2018]
- Diagnosis System [01/2018 - 05/2019]
- Diagnosis System [05/2019 - 07/2020]
- Diagnosis System [07/2020 - ]
- DTC Check / Clear [09/2016 - 07/2020]
- DTC Check / Clear [07/2020 - ]
- Freeze Frame Data [09/2016 - 05/2019]
- Freeze Frame Data [05/2019 - 07/2020]
- Freeze Frame Data [07/2020 - ]
- Fail-Safe Chart [09/2016 - 05/2019]
- Fail-Safe Chart [05/2019 - 07/2020]
- Fail-Safe Chart [07/2020 - ]
- Data List / Active Test [09/2016 - 05/2019]
- Data List / Active Test [05/2019 - 07/2020]
- Data List / Active Test [07/2020 - ]
- Diagnostic Trouble Code Chart [09/2016 - 12/2018]
- Diagnostic Trouble Code Chart [12/2018 - 05/2019]
- Diagnostic Trouble Code Chart [05/2019 - 07/2020]
- Diagnostic Trouble Code Chart [07/2020 - ]
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.