Not odd zero left. Confirms my theory. The siphon jet did its job and moved every drop of fuel from left to right. The pump then sucked the right bone dry becuase the sender was reporting an extra 27L not there you had no idea.

Better right misreading than left like mine. When left misreading the right reads. Only about 1L for the last 1/3 of a tank and for the last 100 miles or so I have no idea how much fuel I have. Test six reports about 0.6-0.8L the entire time except when the car is moving, much of the time it will actually read zero. Talk about high anxiety.

BMW has a repair bulletin how to repair when it's acting like mine (basically add spring pressure to the sensor wiper arm) but yours appears broken so reading full scale high. If the break is obvious you might be able to repair.

Did you replace the whole sender unit or just the pump? If whole unit the defect should be warranty covered. If not, then if the break is not in the wiper zone you may be able to solder it (obvious heat + fuel precautions required)

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)