How do you install navigation DVD on Lexus LS 430?

To install a navigation DVD in a Lexus LS 430, first, ensure that the vehicle is turned on but in park. Locate the navigation system's DVD slot, which is usually found in the center console. Insert the new navigation DVD into the slot with the label facing up, and wait for the system to recognize the disc. Follow any on-screen prompts to complete the installation process.