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.
2013 Lexus GX 460 BaseFACTORY OEM SERVICE PROCEDURE
Lin Communication System
LIN COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION (MAIN BODY ECU)
| DTC Code | Description |
|---|---|
| B1206 | P/W Master Switch Communication Stop |
| B1273 | Sliding Roof ECU Communication Stop |
| B2321 | Driver Side Door ECU Communication Stop |
| B2322 | Front Passenger Side Door ECU Communication Stop |
| B2323 | Rear Door RH ECU Communication Stop |
| B2324 | Rear Door LH ECU Communication Stop |
| B2325 | LIN Communication Bus Malfunction |
LIN COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION (POWER MANAGEMENT CONTROL ECU)
| DTC Code | Description |
|---|---|
| B2287 | LIN Communication Master Malfunction |
LIN COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION (CERTIFICATION ECU)
| DTC Code | Description |
|---|---|
| B2785 | Communication Malfunction between ECUs Connected by LIN |
| B2786 | No Response from Steering Lock ECU |
| B2789 | No Response from ID BOX |
| B278C | Lost Communication with Power Source Control |
LIN COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION (HEADLIGHT SWIVEL ECU ASSEMBLY)
| DTC Code | Description |
|---|---|
| B124D | Lost Communication with AFS LIN |
| B2410 | Headlight Swivel Motor LH Communication Malfunction |
| B2411 | Headlight Swivel Motor RH Communication Malfunction |
| B2424 | Headlight Leveling Motor LH Communication Malfunction |
| B2425 | Headlight Leveling Motor RH Communication Malfunction |
| B2432 | Lost Communication with Automatic High Beam Sensor |
LIN COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION (DRIVING SUPPORT SWITCH CONTROL ECU)
| DTC Code | Description |
|---|---|
| B2661 | Lost Communication with Combination Meter |
| B2662 | Lost Communication with Clock/Outside Temperature Display |
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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