Making progress. When you pop this cap off it looks exactly like the other Toyota EPS units. My first experiment was to cut a wedge out of wood and then drive it up in there between the bearing and the outer housing and then took it for a spin. The rattle is completely eliminated the only problem is the steering wheel no longer returns to center. I pulled over and removed the wooden wedge and the steering was back to normal and the rattle returned only worse than before because the rubber ring was no longer in there. So the next plan is to cut some slivers of plastic out of a milk carton and then shim it between the rubber ring and the outer housing.
Okay. Have some shins cut. Now if I can get them crammed up in there.
