Posted on 2/27/2026
It can be a little unsettling to park, turn the key off, and still hear the radiator fan humming away. A lot of drivers assume something is stuck on or that the battery is about to die. In many cases, the fan running after shutdown is completely normal and is actually protecting the engine from heat soaking. The real question is how long it runs and whether it does it every time or only in specific conditions. When It’s Normal For The Fan To Run After Shut Down On many vehicles, the fan is allowed to run for a short time after you turn the engine off. The cooling system is still hot, and coolant is no longer circulating the same way it does when the engine is running. Letting the fan run can pull heat out of the radiator and the engine bay so temperatures settle down instead of spiking. If it runs for a minute or two and then shuts off, especially after a hot drive or sitting in traffic, that is usually expected behavior. You may notice it more in summer or a ... read more