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.
1996 Lexus GS 300FACTORY OEM SERVICE PROCEDURE
Cooling Fan System
NOTE:
Use the following procedure to check operation of cooling fan system. For all other cooling fan testing, see the ENGINE COOLING FAN
article.
- Ensure coolant temperature is less than 196°F (91°C). Turn ignition on. If cooling fan does not come on, go to next step. If cooling fan comes on, check for faulty cooling fan system components or wiring. See ENGINE COOLING FAN article.
- Ensure coolant temperature is greater than 212°F (100°C). If cooling fan comes on, system is okay. If cooling fan does not come on, check for faulty cooling fan system components or wiring. See the ENGINE COOLING FAN article.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.