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.
2004 Lexus LS 430FACTORY OEM SERVICE PROCEDURE
Theft warning ECU
THEFT WARNING ECU CUSTOMIZE PARAMETERS
| Display (Item) | Default | Contents | Setting |
|---|---|---|---|
| LOCK/KEY TWICE (Unlock w/ 2 times D key operation) | ON | Function that unlocks only driver side door when driver side door key cylinder is turned to unlock once and unlocks all the doors when it is turned to unlock twice. In OFF setting, turning it once unlocks all doors. | ON/OFF |
| UNLOCK/PARK (Unlock w/ IG ON, shift P, speed 0 km/h (0 mph)) | OFF | Function that unlocks doors when lever is shifted to P position from any position other than P while the ignition switch is ON. | ON/OFF |
| AUTO LOCK (ONCE) (Auto Lock (ONCE)) | OFF | Function that locks the doors once when the vehicle speed reaches a certain level. | ON/OFF |
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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