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.
2014 Lexus LS 460 Base, RWDFACTORY OEM SERVICE PROCEDURE
Lighting System
LIGHTING SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| B124A*1 | Automatic High Beam Mirror |
| B124B*1 | Automatic High Beam System |
| B124C*1 | Automatic High Beam Camera |
| B124D*1 | Lost Communication with AFS LIN |
| B124E | Flasher Relay Circuit |
| B1244 | Light Sensor Circuit Malfunction |
| B2402 | Transistor Relay Overload Malfunction |
| B241E*2 | Headlamp Shade Motor LH Circuit |
| B241F*2 | Headlamp Shade Motor RH Circuit |
| B2410 | Headlight Swivel Motor LH Communication Malfunction |
| B2411 | Headlight Swivel Motor RH Communication Malfunction |
| B2412 | Headlight Swivel Motor LH Malfunction |
| B2413 | Headlight Swivel Motor RH Malfunction |
| B2414 | Steering Position Sensor Malfunction |
| B2415 | Vehicle Speed Sensor Malfunction |
| B2416 | Height Control Sensor Malfunction |
| B2417 | Headlight Beam Level Control Motor LH Malfunction |
| B2418 | Headlight Beam Level Control Motor RH Malfunction |
| B242A*2 | Variation Information Error |
| B242B*2 | Vehicle Control Information Malfunction |
| B2420*3 | AFS ECU Malfunction |
| B2420*2 | AHS ECU Malfunction (EEPROM) |
| B2424 | Headlight Leveling Motor LH Communication Malfunction |
| B2425 | Headlight Leveling Motor RH Communication Malfunction |
| B2427 | CAN Communication Malfunction |
| B2429 | Steering Wheel Position Undecided |
| B243A*2 | Headlamp RH Circuit |
| B243B*2 | LED Wiring for High Beam LH Circuit |
| B243C*2 | LED Wiring for High Beam RH Circuit |
| B2430*3, *4 | LED Headlight LH Circuit Malfunction |
| B2431*3, *4 | LED Headlight RH Circuit Malfunction |
| B2432*1 | Lost Communication with Automatic High Beam Sensor |
| B2435*2 | Camera Malfunction |
| B2436*2 | Inner Rear View Mirror Malfunction |
| B2437*2 | Camera High Temperature Malfunction |
| B2438*2 | Camera Detection Malfunction |
| B2439*2 | Headlamp LH Circuit |
| B2440*2 | Lost Communication with AHS EDU LH Module |
| B2441*2 | Lost Communication with AHS EDU RH Module |
| B2442*2 | Lost Communication with Camera Module |
| B2454*2 | Camera Optic Axis Initialization Incomplete |
| B2461*1 | Vehicle Information not written in AHB ECU |
| B2470*2 | Camera Optic Axis Malfunction |
| B2471*2 | Camera Optic Axis Correction Malfunction |
| B2480*5 | Headlight Hi LH Circuit Transistor |
| B2481*5 | Headlight Hi RH Circuit Transistor |
| B2482 | Clearance Light Circuit Transistor |
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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