recently had tranny flush from dealership. Then had probs on cold starts and after a hard stop. Thing would not engage or on a stop, would disengage. Ususally for a couple secs but trouble none the less.
Dealer could not replicate prob even though I told them how. They said fluid was a little low and topped it up. Have not had a prob since but that don't mean anything yet as the prob didn't occur regularly.