If I reset the computer it stops flashing for about a week. 4 high works then and the light comes on like it should but when you turn the switch for 4 low nothing happens it doesn't engage into 4 low and light doesn't work. I know the previous owner a (woman)never used the 4 low but anyways. I was wondering if that could be a factor with the 4X4 and 4low light flashing.