WARNING: This page is about a different car, the 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
To Perform the auto re-route of route, select "On".
Fig 1: Identifying AUTO RE-ROUTE MODE Display
Courtesy of NISSAN MOTOR CO., U.S.A.
Not to perform the auto re-route of route, select "Off".