I think they do keep it engaged, at least while coasting. I know you said braking but I've seen it in both my 2002 and 2015 automatics when coasting. If I'm c

I think they do keep it engaged, at least while coasting. I know you said braking but I've seen it in both my 2002 and 2015 automatics when coasting. If I'm coasting up to a red light I'm pretty sure I can brake lightly and still be coasting with no fuel consumption, and then it will only turn the fuel back on when it needs to creep. I'll check it on the live MPG display next time I'm driving.