67 31 540 Removing and installing/replacing drive for backrest head adjustment (model year 2009 through production date 07/2012)
WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2015 BMW Alpina B7L, 2015 BMW Alpina B7, 2015 BMW 750i, 2015 BMW 750Li, and 2015 BMW 740i. However, it is still accessible from the selected car via links, so may be relevant.
Necessary preliminary tasks:
Disconnect plug connection (1).
Release screw (2).
Tightening torque 67 31 4AZ .
Pull shaft (1) in direction of arrow out of shaft receptacle (2).
Installation:
Make sure shaft (1) is correctly seated in receptacle (2).
Release retaining ring (3).
Feed out drive unit for backrest head adjustment (4) and remove.
Removal and installation only:
Do not turn spindle (1) in order not to change measurement A.
Replacement:
Adopt measurement A of removed drive unit for backrest head adjustment (2). If necessary, adjust measurement A by turning spindle (1).
INITIALIZE drive unit for backrest head adjustment.
NOTE:
Carry out FUNCTION CHECK WITH ADAPTER CABLE