I saw some things in the archives, but not exactly what I'm seeing. The fuel gauge goes to empty, the range on the OBC display shows ----M, range shows 2-3L fuel left if I press the 1 and 1000 buttons on the OBC, but the warning light doesn't come on. I thought maybe it was a bulb/LED issue, but when I fill the tank, it takes maybe 12.75 gallons, and shows 3/4 full. Has anyone one this forum experienced this? I'm thinking it's the sender, since the gauge and OBC seem to agree. I think I read in the archives that they are driven off the same signal, but the warning light is not. Is it possible to re-calibrate? Help?