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The Mercedes Benz Class (W204) allows you to transfer your personal data to another system or car and back up to removable media. You can use SD memory cards or USB drives to export data. To export data, insert a drive and press the SYS button. When the system menu is displayed, the drive puck to the "Install the System" item and click on the controller. Then select Import/Export and then click Export Data. You can also install the PIN to protect against unauthorized import or export of data.