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.
Section 222 (Automatic Headlight Beam Level Control System (Single Beam Headlight) - Diagnostics - Introduction)
2025 Toyota Sequoia CapstoneSECTION Section 222 (Automatic Headlight Beam Level Control System (Single Beam Headlight) - Diagnostics - Introduction)
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2018 Lexus RC 350, 2018 Lexus RC 300, 2017 Lexus RC 350, 2017 Lexus RC 300, and 2017 Lexus RC 200t. However, it is still accessible from the selected car via links, so may be relevant.
- AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM (for Single Beam Headlight)
- Precaution [09/2014 - 11/2017]
- Precaution [11/2017 - 10/2018]
- Parts Location [09/2014 - 11/2017]
- Parts Location [11/2017 - 10/2018]
- System Diagram [09/2014 - 11/2017]
- System Diagram [11/2017 - 10/2018]
- System Description [09/2014 - 11/2017]
- System Description [11/2017 - 10/2018]
- How To Proceed With Troubleshooting [09/2014 - 10/2018]
- Initialization [09/2014 - 11/2017]
- Initialization [11/2017 - 10/2018]
- Problem Symptoms Table [09/2014 - 11/2017]
- Problem Symptoms Table [11/2017 - 10/2018]
- Terminals Of Ecu [09/2014 - 10/2018]
- Diagnosis System [09/2014 - 11/2017]
- Diagnosis System [11/2017 - 10/2018]
- DTC Check / Clear [09/2014 - 10/2018]
- Freeze Frame Data [09/2014 - 10/2018]
- Fail-Safe Chart [09/2014 - 11/2017]
- Fail-Safe Chart [11/2017 - 10/2018]
- Data List / Active Test [09/2014 - 10/2018]
- Diagnostic Trouble Code Chart [09/2014 - 10/2018]
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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.