Just purchased 2013 ES 350 a couple of months ago, my wife is complaining that between 20 to 40 MPH it seems to search for the correct gear depending on the type of terrain and if you are coasting or giving it gas but back and forth looking for what it thinks is the correct gear, and sometimes seems to shift hard she says, also I have noticed a slight whining noise that sounds like the transmission, almost like the noise you hear from a hydrostatic mower or tractor. It is a very slight noise