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Q: Coolant fan runs continuously? What can it be?

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Soon as I cut off the car, the fan comes back on running until the battery drains.

My car has 133461 miles.
My car has an automatic transmission.

Hello. Most of the time on this vehicle the issue is caused by a failure in the fan control module. It typically has an internal short that causes this. I usually test the circuit to make sure that the computer is not commanding it on. If not, then I replace the module as that is the most common failure. If you want to have this fan problem looked at, consider YourMechanic, as a certified technician can come to your home or office to diagnose the AC system and repair this problem.

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