BMW 528i xDrive water pump not functioning despite replacement, mechanic seeking donor vehicle for diagnosis on BMW 528i xDrive

Some BMW 528i xDrive owners report experiencing issues with their water pump not functioning even after replacement, which may indicate a more complex underlying problem. This situation is particularly concerning given that BMW recalled nearly 720,800 vehicles due to water pump issues that could lead to short circuits and potentially cause fires. Owners of affected models, including the 528i, have reported that the faulty water pump's electrical connector may be exposed to water, increasing the risk of a thermal event. The recall was initiated due to the possibility that some BMW engines could short-circuit from a water pump leak, resulting in fire hazards. Therefore, it is essential for mechanics to investigate further and consider using a donor vehicle for diagnosis to pinpoint the root cause and ensure proper repairs are made.