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.
2011 Lexus LS 460 RWDFACTORY OEM SERVICE PROCEDURE
Diagnostic Trouble Code Chart
HINT:
If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See" in table below.
STEERING LOCK SYSTEM DTC CHART
| DTC Code | Detection Item | Trouble Area | See |
|---|---|---|---|
| B2781 | Open / Short in Steering Lock ECU | - Harness or connector of LIN bus line - Certification ECU - Steering lock actuator (Steering lock ECU) |
Refer to DTC B2781: Open / Short in Steering Lock ECU |
| B2782 | Power Source Control ECU Malfunction | - Steering lock actuator (Steering lock ECU) - Wire harness or connector - Main body ECU |
Refer to DTC B2782: Power Source Control ECU Malfunction |
| B2788 | IG2 Signal Malfunction | - Wire harness or connector - Steering lock actuator (Steering lock ECU) - Main body ECU - IG2 relay |
Refer to DTC B2788: IG2 Signal 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.