Did you check the fuel levels from the cluster hidden menu?
If the in tank pump fails engine will work normally if there is fuel on the right (pump side) of the tank because suction from inline fuel pump is enough. But the fuel transfer from left to right doesn't work normally so the pump side will be drained prematurely.
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E39 530dA -02 M-Sport Messing metallic
E53 X5 3.0dA -06 Sport Stratus grey
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