I believe the two blinks would be the clutch speed sensor.
That is tell the computer that the back and front wheels are not spinning the same speed, or at least it does not know if they are. So it wont let you shift into 4x4 shutting the machine off rest it and it was able to tell that they were at the same speed. Mine did that to me in a mud hole once. I di-electric greased the connections and have not had it happen again. My guess it that is what happened from snow getting into the plug.
That is tell the computer that the back and front wheels are not spinning the same speed, or at least it does not know if they are. So it wont let you shift into 4x4 shutting the machine off rest it and it was able to tell that they were at the same speed. Mine did that to me in a mud hole once. I di-electric greased the connections and have not had it happen again. My guess it that is what happened from snow getting into the plug.