Some Garmin® map products must be unlocked before you can use the detailed map data. If your product must be unlocked, an unlock code or a product key/coupon code is included in the product packaging.
An unlock code consists of 25 characters and is printed on a yellow piece of paper or on the product packaging. It unlocks all maps associated with your map product. Unlock codes are also included with Garmin devices that include mapping software.
A product key/coupon code consists of 8 characters and is printed on an unlock certificate. This code unlocks a map region of your map product. Product keys/coupon codes are also included with software that is packaged separately from a Garmin device.
If you did not unlock maps during installation, if you need to unlock another map region, or if you need to unlock maps for an additional Garmin device, go to my.garmin.com/maps/unlockMaps.htm.