The Curt Class I trailer hitch # C11362 that fits your 2015 Lexus ES 300h will require some modest modifications to your vehicle during installation. You can refer to the written instructions I linked for you to see the step-by-step process as well as the tools needed. These mods include removal and trimming of the heat shield so it can be re-installed and some trimming of the underbody panel.
In the instructions a photo showing the finished installation is included. Naturally there is... view full answer...