52 17 030 Removing and installing/replacing backrest frame on left or right front seat (comfort)

Necessary preliminary tasks: 

• Remove front seat, refer to 52 14 000 REMOVING AND INSTALLING LEFT OR RIGHT FRONT SEAT (NORMAL/ELECTRIC) 
• Remove both rear panels on front seat backrest, refer to 52 17 205 REMOVING AND INSTALLING/REPLACING BOTH REAR PANELS ON LEFT OR RIGHT FRONT SEAT BACKREST (COMFORT) 
• Remove inner cover on front seat, refer to 52 14 041 REMOVING AND INSTALLING INNER COVER ON LEFT OR RIGHT FRONT SEAT (NORMAL/ELECTRIC) 
• Remove backrest cover for front seat, refer to 52 17 405 REPLACING BACKREST COVER FOR LEFT OR RIGHT FRONT SEAT (COMFORT) 
• Remove head restraint support on front seat, refer to 52 17 380 REMOVING AND INSTALLING/REPLACING HEAD RESTRAINT MOUNT ON LEFT OR RIGHT FRONT SEAT (COMFORT) 

Release all cable ties on wiring harness (1).

Fig 1: Locating Cable Ties And Plug Connections

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect all marked plug connections.

Feed through wiring harness (1) at bottom right on backrest frame.

Unclip left and right clips (1).

Fig 2: Removing Backrest Frame

Courtesy of BMW OF NORTH AMERICA, INC.

Unhook seat covers (2) on left and right.

Unscrew left and right bolts (3).

Installation: 

Tightening torque: 52 10 2AZ. Refer to SEATS - TIGHTENING TORQUES .

If necessary, remove lumbar cushion with drive and valve block. Remove backrest frame.