The affected vehicles were manufactured from Sept. 11 through Oct. 4, 2012 (check your vehicle's build date on a sticker on the driver-side doorjamb). In these vehicles, the fuel tank assembly may not have been properly sealed, which could result in a gas leak when the tank is full. This could lead to a fire.
Nissan will notify owners starting March 18, 2013, and dealers will replace the necessary fuel tanks for free. Owners can call Nissan at 800-647-7261 or NHTSA's vehicle safety hotline at 888-327-4236 for more info.