52 16 055 Replacing an air cushion for backrest width adjustment (M3 sport pack) on left or right

WARNING: This page is about a different car, the 2011 BMW M3, 2010 BMW M3, and 2009 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks

Remove REAR PANEL ON FRONT SEAT
Partially remove BACKREST COVER

Color coding for air cushion, backrest width adjustment:

Yellow air hose = air supply, left air cushion for backrest width adjustment
Brown air hose = air supply, right air cushion for backrest width adjustment

Unlock and detach quick connector from yellow or brown air hose (1) or (2).

Fig 1: Identifying Yellow/Brown Air Hose

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip carrier for backrest width adjustment from backrest frame.

Feed carrier with air hose out of backrest frame.

Installation:

Make sure the carrier for backrest width adjustment is fitted correctly on the backrest frame.

Install air hoses without kinks.

Fig 2: Feeding Carrier With Air Hose Of Backrest Frame

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Carry out FUNCTION TEST .