What does it mean when a BMW electric coolant pump is missing?

[VonColin]

It means the electronic water pump has entered power-off protection mode, usually due to a fault in the pump circuit or the pump itself. Here is relevant information about BMW's electronic water pump: 1. Concept: The electronic water pump uses piezoelectric materials as the power device, achieving complete electronic control from operation to drive. It employs an electronic integrated system to fully control liquid transmission, realizing adjustability and precision in liquid transfer - a new type of water pump. 2. Consequences of damage: A faulty electronic water pump in BMW will directly cause the engine temperature to become excessively high, may even prevent the engine from starting, and the dashboard will display a warning light.