BMW 328i xDrive multiple electrical issues including non-functional blinkers, windows, interior lights, and potential ECM failure on BMW 328i xDrive

Some BMW 328i xDrive owners report experiencing various electrical issues that can significantly affect the vehicle's systems. Common problems include non-functional blinkers, which pose a safety concern while driving. Additionally, some drivers report malfunctioning windows, hindering the vehicle's convenience and functionality. There are also reports of interior lights failing to operate correctly, impacting visibility inside the car, particularly at night. Furthermore, owners have expressed concerns about potential Electronic Control Module (ECM) failures, which can lead to a range of electrical issues throughout the vehicle. These problems can be frustrating and may necessitate professional diagnosis and repair to ensure the vehicle's proper functioning and safety on the road.