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.
1992 Lexus LS 400FACTORY OEM SERVICE PROCEDURE
Circuit Protection Devices
CIRCUIT PROTECTION DEVICES LOCATION
| Component | Location | ||
|---|---|---|---|
| Circuit Breakers | |||
| Defogger | In passenger compartment fuse/relay block. | ||
| Power Door Locks | In passenger compartment fuse/relay block. | ||
| Power Windows | In passenger compartment fuse/relay block. | ||
| EFI Fuse (20A) | In engine compartment fuse/relay block No. 1. | ||
| Fuse/Relay Block | |||
| Engine Compartment (2) | |||
| No. 1 | On left front of engine compartment, near battery. | ||
| No. 2 | On left front of engine compartment, behind headlight. | ||
| Passenger Compartment | Under left side of dash. See Figure. | ||
| Fusible Link (Main) | On battery positive terminal. | ||
| Ignition Fuse (7.5A) | In passenger compartment fuse/relay block. | ||
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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