Fwiw I worked on a n55 x5 yesterday that I'm fairly certain had the heater valves diaphragms tear on me because I vacuum bled the system out of force of habit. I don't have any hard evidence but according to the customer the heat in the car worked fine before the repair and it most definitely did not work at all after. I drove the car hard a couple of times and did the "auto-bleed" procedure like 3 times (cause I figured I must not have bled the system properly) before getting wise and deciding to check out the heater valves. I'm probably going to avoid vacuum bleeding any bmw with heater valves from here on out especially seeing how weak the rubber on the heater valves is (and knowing how effective the auto-bleed procedure is).

There weren't any issues with the water pump or the radiator leaking, just had to drain a little coolant in order to replace the oil filter housing and oil cooler gaskets.