The warning beep and "HI" is separate from the reset of the FSS. The FSS reset IS frustrating for a lot of us. I had a HELL of a time resetting it in my 05s, but in the 07 SE, it is easy.

The "HI" indication is usually caused by too much oil in the pan, I found long ago that 8 quarts, not 8.5 quarts, was the proper fill. If you are putting 8.5 in there, THAT is your problem.


The scan tool does not access "user adjustable" items like the FSS. Yes, the sensor can be bad, but most often when the sensor goes south, you get a LOW indication.
I would urge you to disconnect the car's battery for one minute and THEN try resetting the FSS.