1996 Contour GL automatic
Okay this happened a few times in February, but hasnt happened since then.

I start my car in the morning give it like five minutes to heat up. I drive like half mile, the O/D Off light blins green, I shut off the car, restart it and it wont come on again. This doesnt happen everday only once a while, also if it matters it was 19 this morning.
One final thing fluid changed February 27, hasnt came on since then except today.