I'm trying to locate the ODB-II port on my Lexus RX 450h, where do I find it?

 

Reach your left hand palm-up under the dashboard just to the right of the left side of the dead pedal. It faces down and to the rear.

 

On my 2015 RX450h it's where Nate stated. If you get on your knees and look up under the panel with a flashlight, you will see it directly to the left of the brake pedal shaft, facing down.

Mine is a white connector on my RC450h. The one on my Nissan is a black connector.