Ok, i just went back to the Infiniti Dealer because i needed to pick something up from my car, so i asked the rep that is taking care of my issue if the problem in my fuel gauge fixed. He said that they dont know what the issue is, they said that when they move the fuel sending unit(something like that) manually the gauge reads full, but when they put gas it does the same thing, it reads only half, all the parts are working properly so they dont know whats wrong. This is the third time i take my car for this. Once at 20k with the first owner, second at 70k with me and this is the third at 82k. He said that its the first time they have seen this and they have no clue. What happens then if they cant fix it? have you guys had any similar issues?