How do you install navigation DVD on Lexus Rx 400h?

In the rear cargo area, lift the handle to reveal the tire jack, etc. You will see a rectangular access panel on the right hand side sort of facing the driver seat. Remove the panel, and inside you will see a DVD slot. Above it is a tab that needs to be slid toward the left which opens the DVD door and ejects the disc. I believe the car needs to be in ACC or ON to do this. Then you slip in the new DVD and you are good to go.