To the left of the Speedometer, there should be a "Charge/EV/Pwr" bar graph that displays where you are in relation to pedal position correct? How do you bring up this display on a 2012 Prius v? Mine is dark in that side of the screen and I've scrolled through everything trying to bring the display up but to no avail.
If the control dial only lights the screen on full brightness, your day night indicator may be defective, if it never illuminates it, a bulb may be burned out. (You can see me searching for how to make the IP bright)