If the slider is set to LOCK, the SD card cannot be read and the navigation system will not operate. This SD card is valid for use in only one vehicle. Never use it in another vehicle. If the SD card is used first in one vehicle and then in another, the navigation system for either one of the vehicles may become inoperable. SD card/map updates. EZ1L Mazda Navigation SD CARD OEM Part # BHP1-66-EZ1L FITS 16 Thru 19 MAZDA6 CX-5 CX-9 and 2014 Thru 2018 Mazda 3 Ford Lincoln Sync U.s. And Canada Navigation System A7 Maps Sd Card for Escape, Flex, Focus, Fusion, Taurus, Edge, Explorer, F150, Mks, Mkt, and Mkx Gm5t-19h449-aa Us/can.