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What Are the Reasons for the Corolla Fan Blower Not Working?

2 Answers

VonJessica

07/29/25 4:57pm

Reasons for the Corolla fan blower not working include the coolant temperature not reaching the required level, relay failure, or issues with the temperature control switch. Coolant Temperature Not Reaching the Required Level: Most modern car radiator fans operate based on electronic temperature control, meaning the fan will only start working when the coolant reaches the specified temperature. If the temperature is too low, the radiator fan will not rotate. Therefore, if the car radiator fan fails to operate, the first step is to check whether the coolant temperature meets the required level. If the temperature remains too low, the engine should be inspected. Relay Failure: If the coolant temperature is adequate but the car radiator fan still does not work, the issue may lie with the fan relay. In this case, the relay should be removed for inspection and repaired or replaced if necessary. Temperature Control Switch Issues: If neither of the above issues is present, the temperature control switch should be checked, as a faulty switch can also affect the operation of the car radiator fan. The solution is to replace the temperature control switch.

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MacAdelyn

08/14/25 6:57am

I've encountered the issue of the Corolla's fan blower not spinning several times. Simply put, it could be a blown fuse. The fuse box in the Corolla is located under the steering wheel—look for a fuse labeled HVAC and check it, then try replacing it. If the fuse is fine, the blower motor itself might be faulty. In older cars, the motor's bearings can rust or short-circuit after prolonged use. Try listening for a humming sound without movement. Wiring issues are also common, such as loose or corroded connectors causing an open circuit—use a multimeter to check for power. If the relay fails, the fan won't receive a signal to start; bypassing it for a test can reveal the problem. Regular maintenance to prevent moisture and dust buildup can save you trouble. If you can't fix it, it's best to visit a repair shop promptly to avoid delays.

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