What are the symptoms of a faulty electronic water pump in a BMW 740?

[ColemanFitz]

If the electronic water pump in a BMW fails, it can directly cause the engine to overheat, and in some cases, the engine may not start at all. Additionally, a warning light will appear on the dashboard. Introduction to Electronic Water Pump: An electronic water pump uses piezoelectric materials as its power device, achieving complete electronic control from operation to drive. It fully controls liquid transmission through an electronic integrated system, enabling adjustability and precision in liquid transfer, making it a new type of water pump. Features of Electronic Water Pump: The driving mode uses piezoelectric materials as the power device, revolutionizing the traditional motor-driven mechanism. It can precisely transport liquids, making it suitable for applications such as quantitative liquid transfer and control.