How do you install navigation DVD on Lexus 220d?

To install the navigation DVD on a Lexus 220d, first, ensure the vehicle is in the "On" position without starting the engine. Open the DVD drive, usually located in the center console or dashboard, by pressing the eject button. Insert the navigation DVD into the drive, ensuring it is oriented correctly, and wait for the system to recognize the disc. Follow any on-screen prompts to complete the installation.