cloc

I do love my car - but yesterday the automat gear started to fail. Without any warning it could not change from 4 to 5 gear. Using a lot of bensin as well now. When it changes gear, the car shakes a little bit now. The ESP indikator and the A (pile around) light is on. My question will be - any one have had that experience ? How do I check the oile in the gearbox ? Hope to hear from some of you. Claus