Had not changed the filter on the HCFM, but will do that now. Strangely enough, in my manuals section on the warning indicator lights, it just says that if the warning indicator comes on, then the HCFM should be drained, nothing about the filter. But if you go to the back section on the maintenance guide, it does say to replace the filter. Go figure.
My sensor corroded. Easy replacement, the new one comes with directions. Just make sure you securely tap the new sensor in like it says with a mallet. If it doesn't seat well, it will pop out on a dirt road at 9,000' elevation in a remote part of colorado...... you probably don't need to know why I know.
Both filters need done every 30k if I remember right. The HCFM one is a bit of a pain to change on a 4wd.
BTW, if you replace the sensor, make sure you stick some q-tips in the hole and clean out all the gunk/rust before you install the new sensor.
That was an on going issue with my 06.....every month in the winter I had to take it to the dealer so they could replace the sensor under warranty of course. It never ended along with the turbo and a few other stuff and that truck is long gone. Nutin but a headache.
which shows how I cleaned it out, and it now works fine. Bottom line is that you need to get a VERY large Q-tip (pic in the link), and get in there and clean out all the junk. It may take a couple of times to get it all cleaned out.
I have a 05 F-250 with the 6.0 Diesel and had the same problem with the "water in fuel" light coming on each time I made a hard left turn. Went to the dealership and there was a recall on the HFCM unit to be replaced due to this problem. That was 120,000 miles ago and the trouble light has yet to re-emerge since.
BTW . . . . I change both my fuel filters after every other oil change (4500 miles).