How does the EPS work?

I have a Grizzly 450 EPS 2013 that only run for 10 hours. The EPS light lights up when I turn the key and then it goes out when I start the Engine. So it seams OK.

The problem is that I have never felt that the EPS have helped me stear. I dont ride in so hard places so I have never really needed it.

Is the EPS only working when the condotions are challaging???

Best regards//Linus