Is it normal for a BMW fan to keep running at low speed?
1 Answers
It is normal as the fan's function is to dissipate heat. Here are the relevant explanations: 1. Speed principle: If the engine temperature remains in a relatively low range, the fan speed will naturally decrease. If the engine temperature consistently stays in a higher range, the fan speed will increase. It's necessary to check the relationship between engine temperature and fan speed. If it aligns with the above sequence, there should be no issue. If not, it needs to be inspected. 2. Cooling system: The function of the car's cooling system is to maintain the vehicle within an appropriate temperature range under all operating conditions. It consists of the cooling fan, expansion tank, thermostat, water jackets in the engine block and cylinder head, and auxiliary devices.