If half full, the light will blink on and off when you get the sled moving around off trail. Noticed that early on with my '12. I always just make sure it's full before every ride and no longer notice it.
It could also be a stuck or sticking oil level float. They can be remove and checked if you think this is a problem, or replaced all together.
Worst case, if it keeps happening and annoying you, you can wire in a resistor to fool the gauge that it's "full". Just make sure you always have oil!!!! Reference a service manual for resistance, or measure resistance while holding the float at full level.