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.
2005 Lexus LS 430FACTORY OEM SERVICE PROCEDURE
Lighting System DTCS
LIGHTING SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC B1244 | LIGHT SENSOR CIRCUIT MALFUNCTION |
| DTC B1268 | BACK-UP COMMUNICATION BUS MALFUNCTION |
| DTC B2402, B2403 | TRANSISTOR RELAY OVERLOAD/OVERHEAT MALFUNCTION |
| DTC B2412, B2413 | HEADLIGHT SWIVEL MOTOR LH/RH MALFUNCTION |
| DTC B2414 | STEERING POSITION SENSOR MALFUNCTION |
| DTC B2415 | VEHICLE SPEED SENSOR MALFUNCTION |
| DTC B2416 | HEIGHT CONTROL SENSOR MALFUNCTION |
| DTC B2417, B2418 | HEADLIGHT BEAM LEVEL CONTROL MOTOR LH/RH MALFUNCTION |
| DTC B2419 | BEAN COMMUNICATION MALFUNCTION |
| DTC B2420 | AFS ECU MALFUNCTION |
Factory Service Tools
Use the Manual With the Right Hardware
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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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