How do you find sat nav CD for a S320 1999?

To find a sat nav CD for a 1999 S320, check with authorized Mercedes-Benz dealerships, as they often have access to older navigation updates. You can also explore online marketplaces such as eBay or Amazon, where sellers may list used or new navigation discs compatible with your vehicle. Additionally, consider visiting automotive forums or enthusiast groups, where members might offer resources or direct you to where you can find the CD.