I Need instructions how to remove rear bumper to replace it with the new one I just recd.

 

Welcome to the Club.

This is about the best I can do here. I have taken it off before, but this is a representation of where the bolts are.

https://www.clublexus.com/forums/rx-...r-removal.html

 

I would have thought every bumper bar on every car is roughly the same pick of the caps off the bumper unbolt it the slide the side clips out. But i see it is attached from the inside and underneath. If your reinforcement is bent be aware bashing that out is not a good fix as it will crumble easily in an impact so replace the reinforcement especially if hit in middle.