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 LS 430FACTORY OEM SERVICE PROCEDURE
Component Locations
WARNING: This page is about a different car, the 2003 Lexus ES 300 and 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
COMPONENT LOCATIONS
| Component | Location | ||||
|---|---|---|---|---|---|
| Combination Meter | (1)(2) | ||||
| Cruise Control Main Switch | (1)(2) | ||||
| Data Link Connector 3 (DLC3) | (1) | ||||
| Driver Side Junction Block | (1) | ||||
| Electronic Control Module (ECM) | (1)(2) | ||||
| Engine Room Relay Block & Junction Block | (1) | ||||
| Ignition Switch | (1) | ||||
| PNP Switch | (1) | ||||
| Skid Control ECU | (2) | ||||
| Stop Light Switch | (1)(2) | ||||
| Throttle Control Motor | (2) | ||||
|
|||||
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.