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.
1995 Lexus LS 400FACTORY OEM SERVICE PROCEDURE
(Low Coolant Temperature)
- Ensure coolant temperature is less than 181°F (83°C). Turn ignition on. If cooling fans do not come on, go to next step. If cooling fans come on, check for faulty cooling fan system components or wiring. See the ENGINE COOLING FAN article in the ENGINE COOLING section.
- Turn A/C on. Ensure compressor clutch is engaged and refrigerant high-side pressure is at least 220 psi (15.5 kg/cm2 ). If cooling fans come on at low speed, perform high coolant temperature test. If cooling fans do not come on at low speed, check for faulty cooling fan system components or wiring. See the ENGINE COOLING FAN article in the ENGINE COOLING section.
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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