The fan control module regulates the speed of the cooling fan(s) based on engine temperature, A/C demand, and vehicle speed, controlling when and how fast they run.
If you notice any of the following, the part likely needs replacement:
Fan running constantly at full speed regardless of temperature
Fan not running at all, leading to overheating
Check Engine light with a fan control fault code
Installation information
Mounted near the fan shroud with a heatsink for cooling — connects to the fan motor and vehicle wiring harness.
Frequently asked questions
A failed control module often defaults to running the fan continuously at full power as a safe failure mode, protecting the engine from overheating at the cost of extra noise and fuel consumption.
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August 2026
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Toyota Avensis
August 2026
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