just wondering if anybody else has this happen, my water in fuel light only comes on when it rains, doesn't matter if I put a new filter on or just drained it...if it's raining it will come on every time. there is no way I have water getting in my lines when it rains because that means air is getting in and I don't have drivability issues like that.

So, when you changed the filter, did you put the water sensor BACK INTO THE FILTER, or did you just leave it hanging out in the breeze?

Interesting point, I suppose it's possible to not remove the temporary screw in plug at the bottom of the new filter and replace it with the WIF sensor in which case it might produce these symptoms but since you MUST unplug the sensor to remove the filter I would hope not. Alternatively something is causing a current flow from one side of the sensor circuit to the other which turns the light on. First step for that would be to pull the sensor plug and give things a good coating with dielectric grease to seal out water and see if the problem goes away. Second step would be to replace the WIF sensor unless someone knows how to test it. If not then there is likely a wiring problem; on a 06 I'd start looking for that where the harness goes behind the fuel filter head bracket.

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the sensor gets reconnected everytime I change the filter or drain it, but I just think it's bizarre it only happens when it rains. if it was a sensor issue it would happen all the time I would think.

You need water for it to happen so it sounds to me like some where the sensor is managing to get wet or you have a leak in your fuel system. Does it do it if the car sits over night in the rain? Or just after you have driven down the road in the rain? Also what kind of filter head do you have and how long since it started and how many fuel filters since then?

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