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 GS 450hFACTORY OEM SERVICE PROCEDURE
Electro Multi Vision System
ELECTRO MULTI VISION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| B156A | Gateway ECU Disconnected |
| B156B | Multimedia Interface ECU Disconnected |
| B156E | No Response from Multimedia Interface ECU |
| B1590 | No Response from Gateway ECU |
| B1591 | No Response from Audio HU |
| B1593 | No Response from Stereo Component Amplifier |
| B15A0 | LAN Master Malfunction |
| B15B0 | Display Screen Malfunction |
| B15D0 | MOST Communication Malfunction |
| B15D1 | Audio HU Disconnected |
| B15D3 | Stereo Component Amplifier Disconnected |
| U0073 | Control Module Communication Bus Off |
| U0293 | Lost Communication with HV ECU |
| U1110 | Lost Communication with Clearance Warning ECU |
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.