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 HS 250hFACTORY OEM SERVICE PROCEDURE
Can Communication System
POWER MANAGEMENT CONTROL ECU OUTPUT DTCS (TECHSTREAM DISPLAY/POWER MANAGEMENT1) DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| U0100 | Lost Communication with ECM |
| U0125 | Lost Communication with Yaw Rate Sensor Module |
| U0126 | Lost Communication with Steering Angle Sensor Module |
| U0129 | Lost Communication with Brake System Control Module |
| U0131 | Lost Communication with Power Steering Control Module |
| U0293 | Lost Communication with HV ECU |
| U1002 | Lost Communication with Gateway Module (Power Management1) |
| U1110 | Lost Communication with Clearance Sonar Module |
| U110B | Lost Communication with Parking Assist Control Module "B" |
POWER MANAGEMENT CONTROL ECU OUTPUT DTCS (TECHSTREAM DISPLAY/POWER MANAGEMENT2) DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| U0164 | Lost Communication with A/C ECU |
| U1002 | Lost Communication with Gateway Module (Power Management2) |
MAIN BODY ECU OUTPUT DTCS (TECHSTREAM DISPLAY/MAIN BODY) DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| U0127 | Lost Communication with Tire Pressure Monitor Module |
| U0199 | Lost Communication with "Door Control Module A" |
| U0200 | Lost Communication with "Door Control Module B" |
| U0208 | Lost Communication with "Seat Control Module A" |
| U1002 | Lost Communication with Gateway Module (Main Body) |
| U1115 | Lost Communication with Tilt and Telescopic Module |
DRIVING SUPPORT ECU OUTPUT DTCS (TECHSTREAM DISPLAY/PRE-COLLISION2) DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| U0235 | Lost Communication with Cruise Control Front Distance Range Sensor |
| U1002 | Lost Communication with Gateway Module (Pre-Collision2) |
| U1121 | Lost Communication with Driver Monitor 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.