You can confirm siphon jet by monitoring the hidden menu #6.

The right tank liters will drop to about 1.4 L about when left tank will read about 27L.

That's about the point where the two sides of the "saddle" will be separate.

After this point, the right should stay the same while the left drops to zero.

If the right drops below "1.4" the siphon is not working properly.

When not working properly, the electric pump will push fuel to the left side faster than the siphon will push to the right side.

When siphon not working the right side will slowly drop from 1.4 to zero. If you see it get below 1, get some fuel ASAP. There's about 3.6L of fuel remaining once you get to 000 on the dash.

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