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 SC 430FACTORY OEM SERVICE PROCEDURE
Cruise Control System: Precaution
WARNING: This page is about a different car, the 2004 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- When the negative (-) battery terminal is disconnected, initialize the following system after the terminal is reconnected.
- When the ECM or cruise control ECU (distance control ECU) has been replaced, it is necessary to make the ECM recognize speck information (whether the vehicle is equipped with the dynamic laser or not). For procedures, refer to CRUISE CONTROL ECU ASSY .
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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