Disassembly and Assembly: Disassembly

Turn the mirror glass surface upward.
Apply a protective tape A to the housing.
Insert a suitable tool B into the concave gap between mirror holder (1) and power unit (2). Push up tabs (3) (two locations) on mirror holder to disengage lower part of mirror holder, and remove mirror body assembly.
NOTE: When pushing up the tabs (3), do not forcefully push up only one concave position but try to push up two concave positions.

Fig 1: Pushing Tabs On Mirror Holder
Courtesy of NISSAN MOTOR CO., U.S.A.
Remove the mirror body (1) from the mirror housing assembly (2).
NOTE: When removing the wire connectors from the back the mirror glass, notice the location of the wire connectors to the terminals. Pull in the wires in the direction of the terminals to remove the wires.

Fig 2: Identifying Mirror Body And Mirror Housing Assembly
Courtesy of NISSAN MOTOR CO., U.S.A.