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 GS 430FACTORY OEM SERVICE PROCEDURE
Power Window Does Not Operate With Multi-Function Transmitter (Windows Operate Normally With Master Switch)
POWER WINDOW DOES NOT OPERATE WITH MULTI-FUNCTION TRANSMITTER TROUBLESHOOTING
| Trouble | Suspect Area (terminal No.) | Parts name |
|---|---|---|
| Door lock and luggage compartment opener do not operate with multi-function transmitter. | Refer to WIRELESS DOOR LOCK CONTROL SYSTEM | - |
| Only luggage compartment opener operates with multi-function transmitter. | Wireless door lock transmitter faulty. | Check wireless door lock transmitter. |
| Door lock and luggage compartment opener operate with multi-function transmitter. | Fail-safe mode caused by error on jam protection sensor of power window. (Operation of power window with multi-function transmitter is prohibited.) HINT: DTC 31 - 38 output |
Refer to MULTIPLEX COMMUNICATION SYSTEM |
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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