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.
2016 Toyota Prius TwoFACTORY OEM SERVICE PROCEDURE
Automatic Headlight Beam Level Control System
AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| B2415 | Vehicle Speed Sensor |
| B2416 | Height Control Sensor |
| B2417 | Headlight Beam Level Control Motor LH |
| B2418 | Headlight Beam Level Control Motor RH |
| B241A | Rear Height Control Sensor |
| B2424 | Headlight Beam Level Control Motor LH Lost Communication |
| B2425 | Headlight Beam Level Control Motor RH Lost Communication |
| B2450 | Height Sensor Initialization Incomplete |
| B2451 | Variation Code not Written |
| B2452 | Abnormal Height Sensor Data at Initialization |
| B2456 | Left Headlight ECU Variation Error |
Factory Service Tools
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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.
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