SD Card Mode
WARNING: This page is about a different car, the 2015 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
When a non-navigation SD card is connected to the vehicle audio system through the SD card slot, audio from the card can be played through the vehicle speakers. Functions such as volume, seek, fast forward, pause, etc. can be controlled by the vehicle audio controls.
Image files can be saved to the APIM from a non-navigation SD card in order to be used as wallpaper backgrounds displayed on the FDIM.