I used an original ScanGauge for months with no problems in my 05 FEH.

When the SG II came out I bought one. I like the new one a lot better except I am having problems with it. Most of the time it works OK, but occasionally it gives a weird looking display & doesn't work when I start the car until I unplug it briefly & let it reset.

Yesterday when I reset it, it lost all the changes I had made(display color, engine type etc etc) & reverted to all the default settings.

I am assuming it is defective unless somebody here can think of any reason it is doing this???

~John