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.
2021 Lexus ES 300h BaseFACTORY OEM SERVICE PROCEDURE
Pre-Collision System (Hybrid) - Diagnostics - Introduction
- PRE-COLLISION SYSTEM (for HV Model)
- Precaution [06/2018 - 08/2021]
- Parts Location [06/2018 - 08/2021]
- System Diagram [06/2018 - 08/2021]
- How To Proceed With Troubleshooting [06/2018 - 08/2021]
- Customize Parameters [06/2018 - 08/2021]
- Initialization [06/2018 - 08/2021]
- Utility [06/2018 - 08/2021]
- Problem Symptoms Table [06/2018 - 08/2021]
- Terminals Of Ecu [06/2018 - 08/2021]
- Diagnosis System [06/2018 - 08/2021]
- DTC Check / Clear [06/2018 - 08/2021]
- Freeze Frame Data [06/2018 - 08/2021]
- Fail-Safe Chart [06/2018 - 08/2021]
- Data List / Active Test [06/2018 - 08/2021]
- Diagnostic Trouble Code Chart [06/2018 - 07/2019]
- Diagnostic Trouble Code Chart [07/2019 - 08/2020]
- Diagnostic Trouble Code Chart [08/2020 - 08/2021]
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.