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.
2001 Lexus GS 430FACTORY OEM SERVICE PROCEDURE
Component Locations
COMPONENT LOCATIONS
| Component | Location |
|---|---|
| Body ECU No. 1 | Behind Passenger-Side Junction Block |
| Body ECU No. 2 | Behind Driver-Side Junction Block |
| D FR DOOR Fuse (20-Amp) | In Driver-Side Junction Block |
| DOME Fuse (10-Amp) | In Passenger-Side Junction Block |
| Door ECU | Inside Each Door |
| Door Key Lock/Unlock Switch | Integral With Right & Left Front Door Lock Motors |
| Door Lock Detection Switch | Integral With Each Door Lock Motor |
| Driver-Side Junction Block | Behind Driver's Kick Panel |
| D RR DOOR Fuse (20-Amp) | In Driver-Side Junction Block |
| ECU-IG Fuse (15-Amp) | In Driver-Side Junction Block |
| Engine Compartment Relay Block No. 1 | Right Rear Corner Of Engine Compartment |
| Engine Control Module (ECM) | In ECU Box At Left Front Of Engine Compartment |
| Key Unlock Warning Switch | Integral With Ignition Switch |
| MPX-B Fuse (10-Amp) | In Engine Compartment Relay Block No. 1 |
| Passenger-Side Junction Block | Behind Passenger's Kick Panel |
| RADIO No. 2 Fuse (15-Amp) | In Driver-Side Junction Block |
| Wireless Door Lock Buzzer | Behind Driver's Kick Panel |
| Wireless Door Lock ECU | Right Side Of Luggage Compartment |
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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