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.
2005 Lexus SC 430FACTORY OEM SERVICE PROCEDURE
Service Data
Service Data Table - Cooling
| Radiator reservoir cap | ||
| Opening pressure | Standard | 93 to 123 kPa (0.95 to 1.25 kgf/cm2 , 13.5 to 17.8 psi) |
| Minimum | 78 kPa (0.8 kgf/cm2 , 11.4 psi) | |
| Cooling fan ECU power source | Voltage | 9 to 14V |
| Fan Operation amperage | No. 1 | 10 to 21A |
| No. 2 | 10 to 21A | |
| Thermostat | Valve opening temperature | 80 to 84°C (176 to 183°F) |
| Valve lift at 95°C (203°F) | 10 mm (0.39 in.) or more | |
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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