NISSAN 2014 Quest - Navigation System Owner's Manual - Manual (Page 208)

10-6 General system information
* When the vehicle is on a loop bridge.
* When the vehicle is on a snow-covered or
unpaved road.
* When repeatedly turning left or right, or
driving in zigzags.
* When the vehicle is rotated on a parking lot
turntable while the ignition switch is off.
* When driving on a road not displayed on
the map screen or a road that has been
changed due to additional construction or
other reasons.
* When the GPS positioning accuracy is low.