What do you all think these warning lights are?

I had that light come on intermittently for only a split second at a time. I had 28,600 miles on the car and the manual doesn't call for a gearbox oil change until 62,500 miles. I decided to have the oil changed. The mechanic told it was down one liter. I haven't driven many miles since, but I haven't seen that light come on yet.