Caution! The radiator fan of the cooling system turns on depending on the engine coolant temperature and may sometimes turn on when the engine is not running. Be especially careful when working near the fan to avoid injury from the rotating blades. As the coolant temperature decreases, the fan turns off automatically. This is normal.
The radiator fan of the cooling system turns on automatically when the coolant temperature becomes high.
Checking the air conditioner condenser cooling fan
The air conditioner condenser cooling fan should turn on automatically when the air conditioner is turned on.