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.
2003 Lexus ES 300FACTORY OEM SERVICE PROCEDURE
Power Window Control System DTCS
DRIVER SIDE DIAGNOSTIC TROUBLE CODE CHART (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| B1231 | Driver's side jam protection limit switch malfunctions |
| B1232 | Driver's side jam protection sensor malfunctions |
PASSENGER SIDE DIAGNOSTIC TROUBLE CODE CHART (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| B1233 | Passenger's side jam protection limit switch malfunctions |
| B1234 | Passenger's side jam protection sensor malfunctions |
POWER WINDOW CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE CHART (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| B1221 | (Power window switch circuit on driver door) |
| B1223 | (Power window switch circuit on passenger door) |
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.
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