52 26... Removing and installing/replacing left or right LOCK microswitch

Necessary preliminary tasks 

• Remove REAR SEAT .
  Fig 1: Uncliping Left Or Right Microswitch From Seat Backrest Frame

  Courtesy of BMW OF NORTH AMERICA, INC.

Unclip left or right microswitch (1) from seat backrest frame.

Unfasten plug connection (1) and disconnect.

Fig 2: Identifying Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.