52 17 055 Removing and installing/replacing both adjusting units for backrest width adjustment on driver's seat

WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2017 BMW 550i GT xDrive, 2017 BMW 535i GT xDrive, 2017 BMW 535i GT, 2016 BMW 550i GT xDrive, and 2016 BMW 535i GT xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove SIDE AIRBAG (front seat).
Remove BACKREST COVER .

Release rivets (1) on left and right and remove trim (2).

Fig 1: Identifying Backrest Width Adjustment Unit Rivets And Trim

G09880118

Courtesy of BMW OF NORTH AMERICA, INC.

Release cable tie (1).

Installation:

Lay cables (3) without kinks.

Disconnect plug connection (2) on drive.

Fig 2: Identifying Backrest Adjustment Unit Cable And Plug Connection

G09880119

Courtesy of BMW OF NORTH AMERICA, INC.

Release rivets (1) on left and right and remove adjusting elements (3).

Release rivets (2) for drive.

Remove complete adjusting unit.

NOTE: Adjusting element, cables and drive form a single unit and can only be replaced completely.

Fig 3: Identifying Backrest Adjustment Unit Rivets

G09880120

Courtesy of BMW OF NORTH AMERICA, INC.