Is It Normal for a BMW Fan to Keep Running at Low Speed?

[FrankDella]

Engine fans continuously operating at low speed is due to the engine temperature, meaning the coolant temperature does not reach the level required for high-speed operation. This is influenced by the current external environment, particularly the weather. It's normal for the fan not to run at high speed now, but it might do so during extremely hot summer days. Methods to Address Overheating Engine Coolant: 1. Overheating Due to Insufficient Coolant: In this case, you need to add water. However, to prevent engine damage, do not add water immediately. Typically, you should first open the car's hood, then the engine cover to allow ventilation and heat dissipation. Only add water after the coolant temperature has decreased. 2. Overheating Caused by Water Pump Failure: Possible causes include seized bearings or damaged impeller blades. Seized bearings are less likely, but if the impeller is damaged, it should be replaced.