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.
1999 Lexus SC 400FACTORY OEM SERVICE PROCEDURE
Circuit Protection Devices
CIRCUIT PROTECTION DEVICES
| Component | Component Location |
|---|---|
| Fuse Block (3.0L) | At left side of engine compartment, behind battery. See Figure. |
| Fuse Block (4.0L) | At left side of engine compartment, behind battery. See Figure. |
| J/B No. 1 | Behind left kick panel. See Figure. |
| J/B No. 3 | Behind center of dash. See Figure. |
| R/B No. 2 (3.0L) | On left side of engine compartment, behind battery. See Figure. |
| R/B No. 2 (4.0L) | On left side of engine compartment, behind battery. See Figure. |
| R/B No. 4 | Behind left kick panel, on front side of J/B No. 1. See Figure. |
| R/B No. 5 | Behind left kick panel, on rear side of J/B No. 1. See Figure. |
| R/B No. 6 (3.0L) | On left side of engine compartment, behind strut tower. See Figure. |
| R/B No. 6 (4.0L) | On left side of engine compartment, behind strut tower. See Figure. |
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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