my 2004 lx470 has the stepper motor issue. i bought a used cluster from a 2005 lx470, and plugged it in. all the gauges work perfectly on the "new" cluster. but the check engine and other wanring lights stay on, not matter what I do. Just FYI for anyone else, apparently the clusters are not interchangeable, and they are i guess coded to the vehicle - which I was not aware was a thing back in 2004