Beginning in 2005, Nissan used a 3-button remote keyfob on many trucks and utility vehicles with FCC ID CWTWB1U733. This remote replaced a similar 3-button remote with FCC ID KBRASTU15. Nissan vehicles including Frontier, Titan, Xterra, Pathfinder and Versa all may have used this remote.
See Nissan 3-button remote with FCC ID CWTWB1U733 at this link.
The keyless entry systems in these vehicles are user programmable.