Service instruction
WARNING: This page does not describe the selected car, but rather 52 other vehicles, including the 2013 BMW X6 M, 2013 BMW X5 M, 2013 BMW M6, 2013 BMW M5, and 2013 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.
-Alternator usually continues to supply power to vehicle. If no communications are present the alternator will charge at 14.3 V after the alternator speed has risen beyond roughly 3300 RPM one time.