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.
2009 Lexus GS 450hFACTORY OEM SERVICE PROCEDURE
Diagnostic Trouble Code Chart
POWER WINDOW CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE CHART
| DTC Code | Detection Item | Trouble Area | Refer to |
|---|---|---|---|
| B2311 | Power Window Motor Malfunction | 1. Battery disconnected when power switch on (IG) 2. Power window regulator motor assembly (applicable location) 3. Incorrect installation of power window components 4. Overheated power window regulator motor assembly (applicable location) |
Refer to DTC B2311: Power Window Motor Malfunction |
| B2312 | Power Window Switch Malfunction | 1. Power window regulator motor assembly (applicable location) 2. Power window master switch held in same position for more than 20 seconds 3. Power window switch held in same position for more than 20 seconds (applicable location) 4. Wire harness or connector |
Refer to DTC B2312: Power Window Switch Malfunction |
| B2313 | Glass Position Initialization Incomplete | 1. Power window regulator motor not initialized 2. Power window regulator motor assembly (applicable location) |
Refer to DTC B2313: Glass Position Initialization Incomplete |
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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