Lexus has another diagnostic port for the brake/abs system. Some scanners claim that they can read the ABS code too.
Hypervish posted the test procedure in a response to my question. I will paste the line once I find it.
So the suggestions are:
1. Go to Lexus and have the ABS codes read.
2. Upgrade to a better scanner ... not proven .. but the claims are there.
3. Dig for Hyper's note.
If you would allow me to guess ,,, I would say problem is related to wheel rotation sensor.